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<pre>Network Working Group                                        L. Khermosh
Request for Comments: 4837                                    PMC-SIERRA
Category: Standards Track                                      July 2007


      <span class="h1">Managed Objects of Ethernet Passive Optical Networks (EPON)</span>

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The IETF Trust (2007).

Abstract

   This document defines a portion of the Management Information Base
   (MIB) for use with network management protocols in TCP/IP based
   Internets.  In particular, it defines objects for managing interfaces
   that conform to the Ethernet Passive Optical Networks (EPON) standard
   as defined in the IEEE Std 802.3ah-2004, which are extended
   capabilities to the Ethernet like interfaces.
























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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-2" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


Table of Contents

   <a href="#section-1">1</a>.  The Internet-Standard Management Framework . . . . . . . . . .  <a href="#page-3">3</a>
   <a href="#section-2">2</a>.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-3">3</a>
     <a href="#section-2.1">2.1</a>.  Terminology and Abbreviations  . . . . . . . . . . . . . .  <a href="#page-3">3</a>
     <a href="#section-2.2">2.2</a>.  EPON Architecture Highlights . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-2.2.1">2.2.1</a>.  Introduction . . . . . . . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-2.2.2">2.2.2</a>.  Principles of Operation  . . . . . . . . . . . . . . .  <a href="#page-6">6</a>
       <a href="#section-2.2.3">2.2.3</a>.  The Physical Media . . . . . . . . . . . . . . . . . .  <a href="#page-7">7</a>
       <a href="#section-2.2.4">2.2.4</a>.  PMD Specifications . . . . . . . . . . . . . . . . . .  <a href="#page-8">8</a>
       <a href="#section-2.2.5">2.2.5</a>.  Point-to-Point Emulation . . . . . . . . . . . . . . .  <a href="#page-8">8</a>
       <a href="#section-2.2.6">2.2.6</a>.  Principles of the MPCP . . . . . . . . . . . . . . . . <a href="#page-10">10</a>
       <a href="#section-2.2.7">2.2.7</a>.  Forward Error Correction (FEC) . . . . . . . . . . . . <a href="#page-12">12</a>
     <a href="#section-2.3">2.3</a>.  Management Architecture  . . . . . . . . . . . . . . . . . <a href="#page-13">13</a>
   <a href="#section-3">3</a>.  MIB Structure  . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-17">17</a>
   <a href="#section-4">4</a>.  Relation to Other MIB Modules  . . . . . . . . . . . . . . . . <a href="#page-22">22</a>
     4.1.  Relation to the Interfaces MIB and Ethernet-like
           Interfaces MIB . . . . . . . . . . . . . . . . . . . . . . <a href="#page-22">22</a>
     <a href="#section-4.2">4.2</a>.  Relation to the IEEE 802.3 MAU MIBs  . . . . . . . . . . . <a href="#page-29">29</a>
     <a href="#section-4.3">4.3</a>.  Relation to the EFM OAM MIB  . . . . . . . . . . . . . . . <a href="#page-29">29</a>
     <a href="#section-4.4">4.4</a>.  Relation to the Bridge MIB . . . . . . . . . . . . . . . . <a href="#page-30">30</a>
   <a href="#section-5">5</a>.  Mapping of IEEE 802.3ah Managed Objects  . . . . . . . . . . . <a href="#page-31">31</a>
   <a href="#section-6">6</a>.  Definitions - The DOT3 EPON MIB Module . . . . . . . . . . . . <a href="#page-33">33</a>
   <a href="#section-7">7</a>.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <a href="#page-85">85</a>
   <a href="#section-8">8</a>.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-86">86</a>
   <a href="#section-9">9</a>.  Security Considerations  . . . . . . . . . . . . . . . . . . . <a href="#page-86">86</a>
   <a href="#section-10">10</a>. References . . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-88">88</a>
     <a href="#section-10.1">10.1</a>. Normative References . . . . . . . . . . . . . . . . . . . <a href="#page-88">88</a>
     <a href="#section-10.2">10.2</a>. Informative References . . . . . . . . . . . . . . . . . . <a href="#page-90">90</a>






















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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>.  The Internet-Standard Management Framework</span>

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to <a href="./rfc3410#section-7">Section&nbsp;7 of
   RFC 3410</a> [<a href="./rfc3410" title="&quot;Introduction and Applicability Statements for Internet-Standard Management Framework&quot;">RFC3410</a>].  Managed objects are accessed via a virtual
   information store, termed the Management Information Base or MIB.
   MIB objects are generally accessed through the Simple Network
   Management Protocol (SNMP).  Objects in the MIB are defined using the
   mechanisms defined in the Structure of Management Information (SMI).
   This memo specifies a MIB module that is compliant to the SMIv2,
   which is described in STD 58, <a href="./rfc2578">RFC 2578</a> [<a href="./rfc2578" title="&quot;Structure of Management Information Version 2 (SMIv2)&quot;">RFC2578</a>]; STD 58, <a href="./rfc2579">RFC 2579</a>
   [<a href="./rfc2579" title="&quot;Textual Conventions for SMIv2&quot;">RFC2579</a>]; and STD 58, <a href="./rfc2580">RFC 2580</a> [<a href="./rfc2580" title="&quot;Conformance Statements for SMIv2&quot;">RFC2580</a>].

<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>.  Overview</span>

   This document defines a portion of the Management Information Base
   (MIB) for use with network management protocols in TCP/IP based
   Internets.  In particular, it defines objects for managing interfaces
   that conform to the Ethernet Passive Optical Networks (EPON) standard
   as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], which are extended capabilities to the
   Ethernet like interfaces.  The document contains a list of management
   objects based on the attributes defined in the relevant parts of
   [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] Annex 30A, referring to EPON.

<span class="h3"><a class="selflink" id="section-2.1" href="#section-2.1">2.1</a>.  Terminology and Abbreviations</span>

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [<a href="./rfc2119" title="&quot;Key words for use in RFCs to Indicate Requirement Levels&quot;">RFC2119</a>].

   ACK - Acknowledge

   BER - Bit Error Rate

   BW - Bandwidth

   CO - Central Office

   CPE - Customer Premises Equipment

   CRC - Cyclic Redundancy Check

   EFM - Ethernet First Mile

   EPON - Ethernet Passive Optical Network

   FCS - Frame Check Sequence




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   FEC - Forward Error Correction

   GMII - Gigabit Media Independent Interface

   LAN - Local Area Network

   LLID - Logical Link Identifier

   MAC - Media Access Control

   Mbps - Megabit per second

   MDI - Medium Dependent Interface

   MDIO - Management Data Input/Output

   MPCP - Multi-Point Control Protocol

   MP2PE - Multi-Point to Point Emulation

   OAM - Operation Administration Maintenance

   OLT - Optical Line Terminal (Server unit of the EPON)

   OMP - Optical Multi-Point

   ONU - Optical Network Unit (Client unit of the EPON)

   P2MP - Point-to-Multipoint

   P2PE - Point-to-Point Emulation

   PCS - Physical Coding Sublayer

   PHY - Physical Layer

   PMA - Physical Medium Attachment

   PMD - Physical Medium Dependent

   PON - Passive Optical Network

   RS - Reconciliation Sublayer

   RTT - Round Trip Time

   SLA - Service Level Agreement




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   SLD - Start of LLID Delimiter

   TDM - Time Division Multiplexing

   TQ - Time Quanta

<span class="h3"><a class="selflink" id="section-2.2" href="#section-2.2">2.2</a>.  EPON Architecture Highlights</span>

<span class="h4"><a class="selflink" id="section-2.2.1" href="#section-2.2.1">2.2.1</a>.  Introduction</span>

   The EPON standard, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], defines the physical
   media (Layer 1) and media access (Layer 2) of the EPON interface.
   The EPON is a variant of the Gigabit Ethernet protocol for the
   Optical Access.  The Optical Access topology is based on passive
   optical splitting topology.  The link of a Passive Optical Network
   (PON) is based on a single, shared optical fiber with passive optical
   splitters dividing the single fiber into separate subscribers.

   The Optical Line Terminal (OLT) is the server unit of the network,
   located at the Central Office (CO).

   The Optical Network Unit (ONU) is the client unit of the network,
   located at the Customer Premises Equipment (CPE).

   The following diagram describes the PON topology:

               Device with
               one or more P2MP
               interfaces such as OLT
               for EPON                       An EPON          IP host
               ------- OLT          ONU       "modem"          --------
    Other IEEE |     | interface |  interface ------ Other IEEE|      |
    interface  |     |-------\----------------|    | interface |      |
    ===========|     |        \               |    |===========|      |
               |     |         \              ------           --------
               |     |          \             ------           --------
               .     .           \------------|    |           |      |
               |     |------\                 |    |===========|      |
               |     |       \                ------           --------
               -------        \ etc











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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The IEEE layering architecture of an EPON interface is defined in the
   diagram of Figure 56.2 [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>].  The following clauses in the
   [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] define the corresponding layers of an EPON interface:

   clause 30 - Management

   clause 60 - PMD for EPON media (Burst PMD)

   clause 64 - MPCP (Multi-Point Control Protocol) - defines the Multi-
   Point architecture, and control protocol for the media access of
   EPON.

   clause 65 -

   a) Virtual links definition for the EPON

   b) FEC

   c) PMA for the EPON.

<span class="h4"><a class="selflink" id="section-2.2.2" href="#section-2.2.2">2.2.2</a>.  Principles of Operation</span>

   The specification of the EPON interface is based on the specification
   of the gigabit Ethernet interface as described in [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>], clauses 35
   and 36.  The Ethernet MAC is working in gigabit rate.  The media
   interface to the MAC is through the GMII interface, as described in
   clause 35, and the PCS layer is based on the gigabit Ethernet PCS as
   described in clause 36.  The special EPON layers are added to the
   Ethernet layering in the following places:

   The MPCP is placed in the MAC control layer, providing the EPON
   control protocol.  The Emulation layer, located at the RS
   (Reconciliation Sublayer), creates virtual private path to each ONU.
   The FEC layer is located between the PCS and PMA layers, enhancing
   reach and split performance of the optical link.
















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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The following diagram describes the layering model of an EPON
   interface:

      +==========================================+
      |               Higher layers              |
      +==========================================+
      |               802.1D Bridge              |
      +==========================================+
      | MAC client|        ...        |MAC client|
      +==========================================+
      |           MAC Control - (MPCP)           |            *NEW*
      +==========================================+
      |    MAC    |        ...        |    MAC   |
      +==========================================+
      |           P2P Emulation (P2PE)           |            *NEW*
      +==========================================+
                      |            |
                      |    GMII    |
                      |            |
      +==========================================+
      |                    PCS                   |
      +==========================================+
      |                    FEC                   |            *NEW*
      +==========================================+
      |                    PMA                   |  *Enhanced parameters
      +==========================================+    for EPON*
      |                    PMD                   |  *Enhanced parameters
      +==========================================+    for EPON*
                      |            |
                      |    MDI     |
                      |            |
                    /===================/
                   /       Media       /
                  /===================/

<span class="h4"><a class="selflink" id="section-2.2.3" href="#section-2.2.3">2.2.3</a>.  The Physical Media</span>

   The physical link is a fiber optical link.  The OLT and ONUs are
   connected through passive optical splitters.  Downlink denotes the
   transmission from the OLT to the ONUs.  Uplink denotes the
   transmission from the ONUs to the OLT.  Uplink and downlink are
   multiplexed using separated wavelengths on the same fiber.  The
   downlink is a broadcast medium where the OLT transmits the data to
   all ONUs.  The uplink is a shared transmission medium for all of the
   ONUs.  The uplink access is based on time division multiplexing (TDM)
   and the management of the TDM media access is defined by the Multi-





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   Point Control Protocol (MPCP).  The MPCP is a control protocol based
   on an inband packet messaging.  The OLT sends control messages (GATE
   messages) allowing ONUs to transmit, defining when the transmission
   occurs and what is its duration.  These messages define the
   transmission order and the amount of BW for each ONU.  A scheduling
   algorithm at the OLT, which is not defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is
   responsible for allocating the BW and controlling the delay of each
   ONU according to its SLA.

<span class="h4"><a class="selflink" id="section-2.2.4" href="#section-2.2.4">2.2.4</a>.  PMD Specifications</span>

   PMD specifications select the same optical wavelength plan as the
   [<a href="#ref-ITU-T.G.983" title="&quot;ITU-T, SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS, Digital transmission systems - Digital sections and digital line system - Optical line systems for local and access networks Broadband optical access systems based on Passive Optical Networks (PON), ITU-T Recommendation G.983.1&quot;">ITU-T.G.983</a>].  The transceivers are derivatives of existing Ethernet
   optical transceivers, with dual wavelength on a single fiber, and
   extended burst capabilities for the uplink.  The uplink burst
   capability is the burst transmission functionality for the ONUs and
   burst reception functionality for the OLT.  The [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] selected
   very relaxed burst parameters to reduce the device cost of EPON
   products.

<span class="h4"><a class="selflink" id="section-2.2.5" href="#section-2.2.5">2.2.5</a>.  Point-to-Point Emulation</span>

   The downstream is a broadcast link, which means that the OLT
   transmission is shared for all ONUs.  The sharing of the transmission
   of the OLT has some negative privacy aspects and should be limited to
   broadcast traffic in nature only.  The traffic dedicated to each ONU
   should not be shared.  The solution provided by [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] is to
   partition the EPON link, in a virtual manner, between the ONUs.  Each
   ONU has a dedicated virtual link to the OLT.  The [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] also
   defines an additional link for broadcast transmission.  The medium
   becomes an aggregation of point-to-point tunnels.  The OLT cannot
   preserve its EPON interface as a single interface connected to N
   devices (following the properties of the physical interface).  The
   EPON interface of the OLT is partitioned into separate virtual
   interfaces; an interface for each virtual link.  Hence, the OLT
   behaves like a device with N virtual ports (and an additional port
   for the broadcast transmission).  The additional single-copy-
   broadcast channel (tagged as all one LLID) is added to allow the
   broadcast transmission within a single copy to all ONUs, preserving
   the inherent advantage of BW efficiency of the PON shared media.  The
   ONUs filter the downlink traffic that is not intended for their
   reception, according to the virtual link marking.  An LLID tag is
   attached at the preamble of the Ethernet packet denoting the virtual
   link.  The LLID marks the destination port in the downstream and
   source port in the upstream.






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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The virtual links concept is also used to avoid a violation of the
   [<a href="#ref-802.1d" title="&quot;Institute of Electrical and Electronic Engineers, 802.1D-2004, IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges.&quot;">802.1d</a>] bridging rules for peer-to-peer traffic in the PON.  Peer-
   to-peer traffic is traffic between ONUs in the same PON.  The OLT
   cannot preserve the EPON interface as a single interface, connected
   to N devices, and allow traffic between these devices without
   violating the bridging rules.  The source address and destination
   address of the peer-to-peer traffic are behind the same port and
   therefore the traffic should be discarded.  The separation of the
   ONUs into virtual links solves this issue.  The OLT has N virtual
   ports for the single physical EPON port.  A bridge sees a single MAC
   Client for every link pair.

   The private paths concept solves the networking problems and provides
   subscriber isolation.

   As the tunneling is only a virtual tunneling, there is a single
   physical interface and a single physical layer for the device so that
   some attributes are shared.  For example, the interface has a single
   local MAC address.

   The virtual tunneling for an OLT with 3 ONUs is illustrated in the
   following diagram.





























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                         Trunk Line
                             |
                             |
                             |
                            \|/
      +===============================================+
      |                 802.1D Bridge                 |
      +===============================================+
      | MAC client1|          ...         |MAC client3|
      +===============================================+
      |                     MP2PE                     |
      +===============================================+
      |                      PHY                      |
      =================================================
             |                 |                 |
             |                 |                 |
            \|/               \|/               \|/
      +============+    +============+    +============+
      |    PHY     |    |     PHY    |    |     PHY    |
      +============+    +============+    +============+
      |   MP2PE    |    |    MP2PE   |    |    MP2PE   |
      +============+    +============+    +============+
      | MAC client |    | MAC client |    | MAC client |
      +============+    +============+    +============+
      |    PHY     |    |     PHY    |    |     PHY    |
      +============+    +============+    +============+
            /|\               /|\               /|\
             |                 |                 |
             |                 |                 |
             |                 |                 |
        Subscriber1       Subscriber2       Subscriber3

<span class="h4"><a class="selflink" id="section-2.2.6" href="#section-2.2.6">2.2.6</a>.  Principles of the MPCP</span>

   The EPON standard defines a media access control of an optical Access
   network.  The Access network has some substantial differences from
   the legacy LAN for which the Ethernet was designed.  The differences
   lie mainly in the provisioning of the network.  An Access network is
   an administrated environment, with an operator providing the service
   and subscribers consuming it.  The operator is controlling the
   network and managing its traffic.  For instance, BW is controlled and
   subscribers are billed for services.  The MPCP protocol divides the
   Ethernet interfaces into two unequal types of network units.  The
   first interface is an OLT interface, which is a server unit,
   controlling the network.  The second interface is an ONU interface,
   which is a client unit, participating in the network.





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   The OLT, which is the server unit, manages the network.  The MPCP
   controls the TDM transmission of the uplink.  The MPCP is implemented
   at the MAC control layer and the MPCP messages are MAC control
   messages using the 0x8808 Ethertype.  These messages are not
   forwarded out of the MAC.

   A concept of time must exist in the protocol in order to schedule the
   uplink transmission.  A timestamp, which is set by the OLT and
   synchronized between the network units, is passed through the MPCP
   messages.  The timestamp is also used to measure the RTT of each ONU.
   RTT is compensated by the OLT in the generation of the grants for the
   uplink transmission.  The difference of incoming timestamp to local
   time allows the OLT to calculate the RTT.  RTT compensation is needed
   as the RTT in an Access network can have a significant value.  The
   standard allows the network to reach a 20 km distance, which is
   equivalent to a 200 usec RTT (25 Kbytes of data).

   The TDM control is done using GATE messages.  These messages define,
   for each ONU, the time for transmission and the length of
   transmission.  The RTT is reduced from the transmission time in the
   GATE message to shift the transmission time of the ONU in the
   opposite direction.

   A scheduling algorithm at the OLT, which is not defined in the
   [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is responsible for dividing the BW and controlling the
   transmission delay of each ONU according to its SLA.  The MPCP
   defines a closed loop operation in order for this algorithm to be
   efficient.  The MPCP allows the ONUs to report on the amount of BW
   they require for transmission using a special REPORT message.  This
   allows allocating BW to an ONU only when requested, relying on the
   statistical burst property of the traffic, and allowing different
   peak BW for different ONUs at different times; hence, allowing
   oversubscription of the BW.  The REPORT message reports the amount of
   data waiting in the ONU queues.

   In addition, the MPCP defines a protocol of auto-discovery and
   registration of ONUs.














<span class="grey">Khermosh                    Standards Track                    [Page 11]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-12" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The registration process is defined in the diagram below:

      OLT                                          ONU
       |                                            |
       |          Discovery Gate message           \|
       |--------------------------------------------|
       |                                           /|
       |                                            |
       |/         Register Request message          |
       |--------------------------------------------|
       |\                                           |
       |                                            |
       |          Register message                  |
       |           (assigning LLID)                \|
       |--------------------------------------------|
       |                                           /|
       |                                            |
       |               Gate message                \|
       |--------------------------------------------|
       |                                           /|
       |                                            |
       |/         Register ACK message              |
       |--------------------------------------------|
       |\                                           |
       |                                            |
       |                                            |

   A new ONU requests to register (sends a REG_REQUEST message) in a
   special discovery grant, allocated for that by the OLT.  During that
   time, more than one ONU might try to register.  A collision in
   transmission might occur, as the RTT of the new ONUs is not yet
   known.  A random backoff mechanism of the transmission is used to
   schedule the following registration requests to avoid these
   collisions.  When the OLT receives a REG_REQUEST message of an ONU
   and approves this ONU, then it sends a REGISTER message to this ONU
   defining its LLID.  From that point, the ONU transmission is
   scheduled by its LLID, knowing the RTT, and no collision can occur.
   The ONU replies with a REGISTER_ACK message and the registration
   process of the MPCP ends.  Higher layer protocols may be needed to
   authenticate the ONU and allow it to participate in the network.

<span class="h4"><a class="selflink" id="section-2.2.7" href="#section-2.2.7">2.2.7</a>.  Forward Error Correction (FEC)</span>

   The FEC is defined to enhance the link budget of the PON.  As each
   splitter attenuates the optical signal, the number of the splits and
   the distance are limited by the link budget.  Hence an FEC that





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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-13" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   improves the link budget has a benefit.  The FEC code used is the
   RS(239,255,8), similar to the FEC code in [<a href="#ref-ITU-T.G.975" title="&quot;ITU-T, SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system - Optical fibre submarine cable systems Forward error correction for submarine systems, ITU-T Recommendation G.975&quot;">ITU-T.G.975</a>], improving
   the BER from 1E-4 to 1E-12.

   The FEC parity encapsulation is based on the framing of the Ethernet
   packet.  The Ethernet packets are spaced by MAC rate adaptation, and
   the parity bytes are inserted after the packet in the provided space.

   As the start and end of packet codewords also define the FEC
   boundaries, and they are outside the FEC protection, they are
   replaced by a series of symbols to reduce their vulnerability to
   errors.

   The following diagram presents an FEC-protected frame:

   +-------------------------------------------------------------------+
   |       |              |           |     |       |          |       |
   | S_FEC | Preamble/SFD |   Frame   | FCS | T_FEC |  Parity  | T_FEC |
   |       |              |           |     |       |          |       |
   +-------------------------------------------------------------------+

   The FEC is added in a separate layer between the PCS and PMA layers
   of the [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>].

   The FEC layer introduces a fixed delay in receive path and transmit
   path.

   The FEC layer is optional.

<span class="h3"><a class="selflink" id="section-2.3" href="#section-2.3">2.3</a>.  Management Architecture</span>

   Each one of the EPON layers is accompanied by a management interface
   that is controlled through clause 30 of the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>].  As the
   [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] specification may be used for different applications, and
   some of the clauses may be used separately, the IEEE management
   clause allocates for each one of them a separate package.  The MIB
   document follows this partition.














<span class="grey">Khermosh                    Standards Track                    [Page 13]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-14" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The following diagram presents the relation of the MIB groups to the
   [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] layers:

   +===========================+
   |       Higher layers       |
   +===========================+
   |       802.1D Bridge       |
   +===========================+
   |MAC client| ... |MAC client|
   +===========================+    \ +=============================+
   |   MAC Control - (MPCP)    |----- |MpcpObjects| ... |MpcpObjects|
   +===========================+    / +=============================+
   |   MAC    | ... |   MAC    |
   +===========================+    \ +=============================+
   |    P2P Emulation (P2PE)   |----- |OmpEmulat  |     |OmpEmulat  |
   +===========================+    / |ionObjects | ... |ionObjects |
             |        |               +=============================+
             |  GMII  |
             |        |
   +===========================+
   |            PCS            |
   +===========================+    \ +=============================+
   |            FEC            |----- |FecObjects | ... |FecObjects |
   +===========================+    / +=============================+
   |            PMA            |
   +===========================+
   |            PMD            |
   +===========================+
             |        |
             |  MDI   |
             |        |
         /===============/
        /     Media     /
       /===============/

   The association is straightforward for the ONU interface.  There is
   one logical and one physical interface, and a single copy exists for
   each layer that can be remotely queried by the OLT.

   At the OLT there is a single physical interface and N virtual
   interfaces for the virtual links of the ONUs (and another virtual
   interface for the broadcast virtual link).  As can be seen from the
   layering diagram above, the MAC layer is virtually duplicated.
   Therefore, in this document it was selected that the management of a
   virtual interface is like a physical interface, an interface index is
   allocated for each one of the virtual links, and an additional
   interface index is allocated for the OLT.




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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-15" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   To illustrate the interface modeling consider two devices; the first
   device has two physical interfaces, is typically located at a
   consumer's site, and is called an "ONU modem".

   An "ONU modem" is shown in the figure below:

                            --------
             ONU interface | ONU   | 10 megabit interface
             --------------| modem |--------------------
                           ---------

   This device would have 3 entries in the IF table, and one IF stack
   entry; for example:

   ifIndex=1 - interface for 10 megabit interface

   ifIndex=2 - interface for the optical interface

   ifIndex=200 - interface for the ONU interface

   And then in the IF stack table:

   ifStackHigherLayer=200, ifStackLowerLayer=2 - map between the
   physical and the ONU

   The second device has three physical interfaces, is typically located
   at the provider's site, and may be called a "headend".

   A "headend" is shown in the figure below:

                               ---------
             1st OLT interface | Head  | gigE interface
             ------------------| end   |--------------------
                               |       |
             ------------------|       |
             2nd OLT interface |       |
                               ---------














<span class="grey">Khermosh                    Standards Track                    [Page 15]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-16" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   This device would have 5 entries (when there are no attached ONUs) in
   the IF table, for example:

   ifIndex=1 - interface for gigE interface

   ifIndex=2 - interface for 1st optical interface

   ifIndex=3 - interface for 2nd optical interface

   ifIndex=265535 - interface for the 1st OLT broadcast interface

   ifIndex=365535 - interface for the 2nd OLT broadcast interface

   And then in the IF stack table:

   ifStackHigherLayer=265535, ifStackLowerLayer=2 - map between the 1st
   physical and its broadcast interface

   ifStackHigherLayer=365535, ifStackLowerLayer=3 - map between the 2nd
   physical and its broadcast interface

   If two ONUs connected to the first OLT interface, then for example,
   the following entries would be added to the IF table:

   ifIndex=200001 - interface for the 1st ONU of 1st OLT

   ifIndex=200002 - interface for the 2nd ONU of 1st OLT

   And in the IF stack table:

   ifStackHigherLayer=200001, ifStackLowerLayer=2 - map between the 1st
   physical and 1st ONU

   ifStackHigherLayer=200002, ifStackLowerLayer=2 - map between the 1st
   physical and 2nd ONU

   For each physical interface, there would be an entry (ifIndex) in the
   tables of the interface MIB module [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>], MAU MIB module
   [<a href="./rfc4836" title="&quot;Definitions of Managed Objects for IEEE 802.3 Medium Attachment Units (MAUs)&quot;">RFC4836</a>], and Etherlike MIB module [<a href="./rfc3635" title="&quot;Definitions of Managed Objects for the Ethernet-like Interface Types&quot;">RFC3635</a>].  Additionally, there
   would be entries (ifIndexes) for the virtual interfaces of the OLT
   interface.  The justification for the additional allocation of
   indexes is that the virtual interfaces are quite well distinguished,
   as they connect different physical ONUs from the OLT side.  For
   instance, there is a meaning for separate bad frames counter or bad
   octets counter for each virtual link, as the ONUs can be differently
   distanced.  This is quite similar to a case of separate physical
   interfaces.




<span class="grey">Khermosh                    Standards Track                    [Page 16]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-17" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The same partition concept exists for the MIB module of this
   document.  Each row in the tables are indexed according to the
   ifIndex; specifically, there is a row for each virtual link.  There
   are some control objects that are shared and are the same for the
   virtual interfaces (and they should have the same value for each
   ifIndex), but most of the objects have different values for N+1
   logical interfaces at the OLT.  This is done for each MIB group.  It
   is a bit different from the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] layering diagram, which
   presents the P2MP layer as a single layer, while duplicating the MAC
   and MAC client layers (please see the diagram above).  However, from
   a management perspective, it is more convenient and neat to partition
   the management of the layers for the virtual links, as the atomic
   managed entity is the virtual link.  It is also convenient to use the
   interface index of the virtual link for that purpose, as it is
   already used to index the rows of the virtual links at the Interface,
   MAU, and etherLike interfaces MIBs.

<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>.  MIB Structure</span>

   This document defines the DOT3 EPON MIB module.  The DOT3 EPON MIB
   module defines the objects used for management of the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>]
   Point-to-Multipoint (P2MP) interfaces.  These MIB objects are
   included in four groups.

   i) The Multi-Point Control Protocol (MPCP) MIB objects - MIB objects
   related to [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64, Multi-Point Control Protocol
   attributes.  The following tables are presented in this group:

   The dot3MpcpControlTable defines the objects used for the
   configuration and status indication, which are per logical link, of
   MPCP compliant interfaces.

   The dot3MpcpStatTable defines the statistics objects that are per
   logical link, of MPCP compliant interfaces.

   The operational mode of an OLT/ONU for the tables is defined by the
   dot3MpcpMode object in the dot3MpcpControlTable.

   ii) The OMPEmulation MIB objects - MIB objects related to [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>],
   clause 65, point-to-point emulation attributes.  The following tables
   are presented in this group:

   The dot3OmpEmulationTable defines the objects used for the
   configuration and status indication, which are per logical links, of
   OMPEmulation compliant interfaces.

   The dot3OmpEmulationStatTable defines the statistics objects that are
   per logical link, of OMPEmulation compliant interfaces.



<span class="grey">Khermosh                    Standards Track                    [Page 17]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-18" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The operational mode of an OLT/ONU for the tables is defined by the
   dot3OmpEmulationType object in the dot3OmpEmulationTable.

   iii) The FEC MIB objects - MIB objects related to [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
   60 and clause 65, EPON FEC attributes.  The following table is
   presented in this group:

   The dot3EponFecTable defines the objects used for the configuration
   and status indication, which are per logical link, of FEC EPON
   compliant interfaces.

   iv) The EPON extended package MIB objects - MIB objects used for
   configuration and status indication with extended capabilities of the
   EPON interfaces.  The following tables are presented in this group:

   The dot3ExtPkgControlTable defines the objects, which are per logical
   link, used for the configuration and status indication of EPON
   compliant interfaces.

   The dot3ExtPkgQueueTable defines the objects, which are per logical
   link, and per queue, used for the configuration and status indication
   of the ONU queues reported in the MPCP REPORT message, of EPON
   compliant interfaces.

   The dot3ExtPkgQueueSetsTable defines the objects, which are per
   logical link, per queue, and per queue_set, used for the
   configuration and status indication of the ONU queue_sets reported in
   the MPCP REPORT message, of EPON compliant interfaces.

   The dot3ExtPkgOptIfTable defines the objects, which are per logical
   link, used for the control and status indication of the optical
   interface of EPON compliant interfaces.

   As described in the architecture section, each row in the tables is
   indexed according to the ifIndex; specifically, there is a row for
   each virtual link.  There are a few control objects that are shared
   and have the same value for the virtual interfaces (and they should
   have the same value for each ifIndex), but most of the objects have
   different values for N+1 logical interfaces at the OLT.  This is done
   for each MIB group.  It is a bit different from the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>]
   layering diagram, which presents the P2MP layer as a single layer
   while duplicating the MAC and MAC client layers.  However, from a
   management perspective, it is more convenient and neat to partition
   the management of the layers for the virtual links, as the atomic
   managed entity is the virtual link.  It is also convenient to use the
   interface index of the virtual link for that purpose, as it is
   already used to index the rows of the virtual links at the Interface,
   MAU, and etherLike interfaces MIBs.



<span class="grey">Khermosh                    Standards Track                    [Page 18]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-19" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   For example, provided below are the values of the MPCP control table
   of an OLT with 3 registered ONUs:

   The table below presents the MPCP control table of ONU1 in working
   mode.  A single row exists in the table.

              +---------------------------+-----------------+
              | MPCP control MIB object   | Value           |
              +---------------------------+-----------------+
              | ifIndex                   | 100             |
              | dot3MpcpOperStatus        | true            |
              | dot3MpcpAdminState        | true            |
              | dot3MpcpMode              | onu             |
              | dot3MpcpSyncTime          | 25              |
              | dot3MpcpLinkID            | 1               |
              | dot3MpcpRemoteMACAddress  | OLT_MAC_Address |
              | dot3MpcpRegistrationState | registered      |
              | dot3MpcpTransmitElapsed   | 10              |
              | dot3MpcpReceiveElapsed    | 10              |
              | dot3MpcpRoundTripTime     | 100             |
              +---------------------------+-----------------+

                                  Table 1

   OLT_MAC_Address is the MAC address of the OLT EPON interface.

   The creation of the rows of the ONU interface is done at
   initialization.

   For example, provided below are the values for the MPCP control table
   of the ONU, after initialization, before registration.




















<span class="grey">Khermosh                    Standards Track                    [Page 19]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-20" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The table below presents the MPCP control table of ONU1 after
   initialization.  A single row exists in the table.

             +---------------------------+-------------------+
             | MPCP control MIB object   | Value             |
             +---------------------------+-------------------+
             | ifIndex                   | 100               |
             | dot3MpcpOperStatus        | true              |
             | dot3MpcpAdminState        | true              |
             | dot3MpcpMode              | onu               |
             | dot3MpcpSyncTime          | 0                 |
             | dot3MpcpLinkID            | 0                 |
             | dot3MpcpRemoteMACAddress  | 00:00:00:00:00:00 |
             | dot3MpcpRegistrationState | unregistered      |
             | dot3MpcpTransmitElapsed   | 0                 |
             | dot3MpcpReceiveElapsed    | 0                 |
             | dot3MpcpRoundTripTime     | 0                 |
             +---------------------------+-------------------+

                                  Table 2































<span class="grey">Khermosh                    Standards Track                    [Page 20]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-21" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The table below presents the MPCP control table of the OLT in working
   mode.  Four rows exist in the table associated with the virtual
   links.

   +----------------+-----------+------------+------------+------------+
   | MPCP control   | Value     | Value      | Value      | Value      |
   | MIB object     |           |            |            |            |
   +----------------+-----------+------------+------------+------------+
   | ifIndex        | 100001    | 100002     | 100003     | 165535     |
   | dot3MpcpOperSt | true      | true       | true       | true       |
   | atus           |           |            |            |            |
   | dot3MpcpAdminS | true      | true       | true       | true       |
   | tate           |           |            |            |            |
   | dot3MpcpMode   | olt       | olt        | olt        | olt        |
   | dot3MpcpSyncTi | 25        | 25         | 25         | 25         |
   | me             |           |            |            |            |
   | dot3MpcpLinkID | 1         | 2          | 3          | 65535      |
   | dot3MpcpRemote | ONU1_MAC_ | ONU2_MAC_A | ONU3_MAC_A | BRCT_MAC_A |
   | MACAddress     | Address   | ddress     | ddress     | ddress     |
   | dot3MpcpRegist | registere | registered | registered | registered |
   | rationState    | d         |            |            |            |
   | dot3MpcpTransm | 10        | 10         | 10         | 10         |
   | itElapsed      |           |            |            |            |
   | dot3MpcpReceiv | 10        | 10         | 10         | 10         |
   | eElapsed       |           |            |            |            |
   | dot3MpcpRoundT | 100       | 60         | 20         | 0          |
   | ripTime        |           |            |            |            |
   +----------------+-----------+------------+------------+------------+

                                  Table 3

   ONU1_MAC_Address is the MAC address of ONU1 EPON interface.

   ONU2_MAC_Address is the MAC address of ONU2 EPON interface.

   ONU3_MAC_Address is the MAC address of ONU3 EPON interface.

   BRCT_MAC_Address is the MAC address of the broadcast EPON interface,
   which is the OLT MAC address.

   The creation of the rows of the OLT interface and the broadcast
   virtual interface is done at initialization.

   The creation of rows of the virtual interfaces at the OLT is done
   when the link is established (ONU registers) and the deletion is done
   when the link is deleted (ONU deregisters).





<span class="grey">Khermosh                    Standards Track                    [Page 21]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-22" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   For example, provided below are the values of the MPCP control table
   of the OLT after initialization, before the ONUs register.

   The table below presents the MPCP control table of the OLT after
   initialization.  A single row exists in this table associated with
   the virtual broadcast link.

             +---------------------------+------------------+
             | MPCP control MIB object   | Value            |
             +---------------------------+------------------+
             | ifIndex                   | 165535           |
             | dot3MpcpOperStatus        | true             |
             | dot3MpcpAdminState        | true             |
             | dot3MpcpMode              | olt              |
             | dot3MpcpSyncTime          | 25               |
             | dot3MpcpLinkID            | 65535            |
             | dot3MpcpRemoteMACAddress  | BRCT_MAC_Address |
             | dot3MpcpRegistrationState | registered       |
             | dot3MpcpTransmitElapsed   | 10               |
             | dot3MpcpReceiveElapsed    | 100000           |
             | dot3MpcpRoundTripTime     | 0                |
             +---------------------------+------------------+

                                  Table 4

   BRCT_MAC_Address is the MAC address of the broadcast EPON interface,
   which is the OLT MAC address.

<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>.  Relation to Other MIB Modules</span>

<span class="h3"><a class="selflink" id="section-4.1" href="#section-4.1">4.1</a>.  Relation to the Interfaces MIB and Ethernet-like Interfaces MIB</span>

   EPON interface is a kind of Ether-like interface.  This MIB module
   extends the objects of the Interface MIB and the Ether-like
   Interfaces MIB for an EPON type interface.

   Implementing this module therefore MUST require implementation of the
   Interfaces MIB module [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>] and the Ethernet-like Interfaces MIB
   module [<a href="./rfc3635" title="&quot;Definitions of Managed Objects for the Ethernet-like Interface Types&quot;">RFC3635</a>].

   Thus, each managed EPON interface would have a corresponding entry in
   the mandatory tables of the Ether-like MIB module found in [<a href="./rfc3635" title="&quot;Definitions of Managed Objects for the Ethernet-like Interface Types&quot;">RFC3635</a>],
   and likewise in the tables of the Interface MIB module found in
   [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].  Also each managed virtual EPON interface would have a
   corresponding entry in the mandatory tables of the Ether-like MIB
   module found in [<a href="./rfc3635" title="&quot;Definitions of Managed Objects for the Ethernet-like Interface Types&quot;">RFC3635</a>], and likewise in the tables of the
   Interface MIB module found in [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>] with a dedicated ifIndex for
   this interface.



<span class="grey">Khermosh                    Standards Track                    [Page 22]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-23" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   In this document, there is no replication of the objects from these
   MIBs.  Therefore, for instance, the document is defining
   dot3MpcpRemoteMACAddress only while assuming that the local MAC
   address object is already defined in [<a href="./rfc3635" title="&quot;Definitions of Managed Objects for the Ethernet-like Interface Types&quot;">RFC3635</a>].

   The interface MIB module [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>] defines the interface index
   (ifIndex).  Interface Index, as specified in [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>], is used in
   this MIB Module as an index to the EPON MIB tables.  The ifIndex is
   used to denote the physical interface and the virtual link interfaces
   at the OLT.  The OLT interface and the virtual link interfaces are
   stacked using the ifStack table defined in [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>], and the
   ifInvStack defined in [<a href="./rfc2864" title="&quot;The Inverted Stack Table Extension to the Interfaces Group MIB&quot;">RFC2864</a>].  The OLT interface is the lower
   layer of all other interfaces associated with the virtual links.

   This document defines the specific EPON objects of an ONU interface
   and an OLT interface.  Information in the tables is per LLID.  The
   rows in the EPON MIB tables referring to the LLIDs are denoted with
   the corresponding ifIndexes of the virtual link interfaces.

   Please note that each virtual interface does not have a different
   physical MAC address at the OLT, as the physical interface is the
   same.  It is specified in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], Section 64.1.2.  The
   corresponding object of the Ether-like interface MIB is duplicated
   for all the virtual interfaces.

   For example, the values of the Interface MIB objects are presented in
   the following tables, for an OLT with 3 registered ONUs:
























<span class="grey">Khermosh                    Standards Track                    [Page 23]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-24" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The table below presents the objects of the Interface MIB of an ONU
   in working mode.

         +----------------------+--------------------------------+
         | Interface MIB object | Value                          |
         +----------------------+--------------------------------+
         | ifIndex              | 1                              |
         | ifDescr              | "interface description"        |
         | ifType               | ethernetCsmacd (6) 1000base-Px |
         | ifMtu                | MTU size (1522)                |
         | ifSpeed              | 1000000000                     |
         | ifPhysAddress        | ONU_MAC_Address                |
         | ifAdminStatus        | up                             |
         | ifOperStatus         | Up                             |
         | ifLastChange         | ONUup_time                     |
         | ifInOctets           | ONU_octets_number              |
         | ifInUcastPkts        | ONU_unicast_frame_number       |
         | ifInNUcastPkts       | ONU_non_unicast_frame_number   |
         | ifInDiscards         | ONU_discard_frame_number       |
         | ifInErrors           | ONU_error_frame_number         |
         | ifInUnknownProtos    | ONU_unknown_frame_number       |
         | ifOutOctets          | ONU_octets_number              |
         | ifOutUcastPkts       | ONU_unicast_frame_number       |
         | ifOutNUcastPkts      | ONU_non_unicast_frame_number   |
         | ifOutDiscards        | ONU_discard_frame_number       |
         | ifOutErrors          | ONU_error_frame_number         |
         | ifOutQLen            | ONU_queue_frame_number         |
         +----------------------+--------------------------------+

                                  Table 5

   ONU_MAC_Address is the MAC address of the ONU EPON interface.



















<span class="grey">Khermosh                    Standards Track                    [Page 24]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-25" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The table below presents the objects of the Interface MIB of the ONU
   interface.
         +----------------------+--------------------------------+
         | Interface MIB object | Value                          |
         +----------------------+--------------------------------+
         | ifIndex              | 100                            |
         | ifDescr              | "interface description"        |
         | ifType               | ethernetCsmacd (6) 1000base-Px |
         | ifMtu                | MTU size (1522)                |
         | ifSpeed              | 1000000000                     |
         | ifPhysAddress        | ONU_MAC_Address                |
         | ifAdminStatus        | up                             |
         | ifOperStatus         | Up                             |
         | ifLastChange         | up_time                        |
         | ifInOctets           | ONU1_octets_number             |
         | ifInUcastPkts        | ONU1_unicast_frame_number      |
         | ifInNUcastPkts       | ONU1_non_unicast_frame_number  |
         | ifInDiscards         | ONU1_discard_frame_number      |
         | ifInErrors           | ONU1_error_frame_number        |
         | ifInUnknownProtos    | ONU1_unknown_frame_number      |
         | ifOutOctets          | ONU1_octets_number             |
         | ifOutUcastPkts       | ONU1_unicast_frame_number      |
         | ifOutNUcastPkts      | ONU1_non_unicast_frame_number  |
         | ifOutDiscards        | ONU1_discard_frame_number      |
         | ifOutErrors          | ONU1_error_frame_number        |
         | ifOutQLen            | ONU1_queue_frame_number        |
         +----------------------+--------------------------------+

                                  Table 6

   ONU_MAC_Address is the MAC address of the ONU EPON interface.

   The following values will be set in the ifStack and ifInvStack tables
   related to this example.

   ifStackTable:

   ifStackHigherLayer=100, ifStackLowerLayer=1 - map between the
   physical interface and the ONU

   ifInvStackTable:

   ifStackLowerLayer=1, ifStackHigherLayer=100,- map between the ONU and
   the physical interface







<span class="grey">Khermosh                    Standards Track                    [Page 25]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-26" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The table below presents the Interface MIB objects of an OLT
   interface.

         +----------------------+--------------------------------+
         | Interface MIB object | Value                          |
         +----------------------+--------------------------------+
         | ifIndex              | 2                              |
         | ifDescr              | "interface description"        |
         | ifType               | ethernetCsmacd (6) 1000base-Px |
         | ifMtu                | MTU size (1522)                |
         | ifSpeed              | 1000000000                     |
         | ifPhysAddress        | OLT_MAC_Address                |
         | ifAdminStatus        | up                             |
         | ifOperStatus         | Up                             |
         | ifLastChange         | OLTup_time                     |
         | ifInOctets           | OLT_octets_number              |
         | ifInUcastPkts        | OLT_unicast_frame_number       |
         | ifInNUcastPkts       | OLT_non_unicast_frame_number   |
         | ifInDiscards         | OLT_discard_frame_number       |
         | ifInErrors           | OLT_error_frame_number         |
         | ifInUnknownProtos    | OLT_unknown_frame_number       |
         | ifOutOctets          | OLT_octets_number              |
         | ifOutUcastPkts       | OLT_unicast_frame_number       |
         | ifOutNUcastPkts      | OLT_non_unicast_frame_number   |
         | ifOutDiscards        | OLT_discard_frame_number       |
         | ifOutErrors          | OLT_error_frame_number         |
         | ifOutQLen            | OLT_queue_frame_number         |
         +----------------------+--------------------------------+

                                  Table 7

   OLT_MAC_Address is the MAC address of the OLT EPON interface.



















<span class="grey">Khermosh                    Standards Track                    [Page 26]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-27" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The table below presents the Interface MIB objects of an OLT
   interface, associated with the virtual link interfaces.

   +----------+-------------+-------------+-------------+--------------+
   | Interfac | Value       | Value       | Value       | Value        |
   | eMIB     |             |             |             |              |
   |  object  |             |             |             |              |
   +----------+-------------+-------------+-------------+--------------+
   | ifIndex  | 200001      | 200002      | 200003      | 265535       |
   | ifDescr  | "interface  | "interface  | "interface  | "interface   |
   |          | description | description | description | description" |
   |          | "           | "           | "           |              |
   | ifType   | ethernetCsm | ethernetCsm | ethernetCsm | ethernetCsma |
   |          | acd (6)     | acd (6)     | acd (6)     | cd (6)       |
   | ifMtu    | MTUsize(152 | MTUsize(152 | MTUsize(152 | MTUsize(1522 |
   |          | 2)          | 2)          | 2)          | )            |
   | ifSpeed  | 1000000000  | 1000000000  | 1000000000  | 1000000000   |
   | ifPhysAd | OLT_MAC_Add | OLT_MAC_Add | OLT_MAC_Add | OLT_MAC_Addr |
   | dress    | ress        | ress        | ress        | ess          |
   | ifAdminS | up          | up          | up          | up           |
   | tatus    |             |             |             |              |
   | ifOperSt | Up          | Up          | Up          | Up           |
   | atus     |             |             |             |              |
   | ifLastCh | ONU1_up_tim | ONU2_up_tim | ONU3_up_tim | up_time      |
   | ange     | e           | e           | e           |              |
   | ifInOcte | ONU1_octets | ONU2_octets | ONU3_octets | BRCT_octets_ |
   | ts       | _number     | _number     | _number     | number       |
   | ifInUcas | ONU1_unic_f | ONU2_unic_f | ONU3_unic_f | BRCT_unic_fr |
   | tPkts    | rame_num    | rame_num    | rame_num    | ame_num      |
   | ifInNUca | ONU1_non_un | ONU2_non_un | ONU3_non_un | BRCT_non_uni |
   | stPkts   | ic_frame_nu | ic_frame_nu | ic_frame_nu | c_frame_num  |
   |          | m           | m           | m           |              |
   | ifInDisc | ONU1_disc_f | ONU2_disc_f | ONU3_disc_f | BRCT_disc_fr |
   | ards     | rame_num    | rame_num    | rame_num    | ame_numr     |
   | ifInErro | ONU1_err_fr | ONU2_err_fr | ONU3_err_fr | BRCT_err_fra |
   | rs       | ame_num     | ame_num     | ame_num     | me_num       |
   | ifInUnkn | ONU1_unknw_ | ONU2_unknw_ | ONU3_unknw_ | BRCT_unknw_f |
   | ownProto | frame_num   | frame_num   | frame_num   | rame_num     |
   | s        |             |             |             |              |
   | ifOutOct | ONU1_octets | ONU2_octets | ONU3_octets | BRCT_octets_ |
   | ets      | _number     | _number     | _number     | number       |
   | ifOutUca | ONU1_unic_f | ONU2_unic_f | ONU3_unic_f | BRCT_unic_fr |
   | stPkts   | rame_num    | rame_num    | rame_num    | ame_num      |
   | ifOutNUc | ONU1_non_un | ONU2_non_un | ONU3_non_un | BRCT_non_uni |
   | astPkts  | ic_frame_nu | ic_frame_nu | ic_frame_nu | c_frame_num  |
   |          | m           | m           | m           |              |





<span class="grey">Khermosh                    Standards Track                    [Page 27]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-28" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   +----------+-------------+-------------+-------------+--------------+
   | Interfac | Value       | Value       | Value       | Value        |
   | eMIB     |             |             |             |              |
   |  object  |             |             |             |              |
   +----------+-------------+-------------+-------------+--------------+
   | ifOutDis | ONU1_disc_f | ONU2_disc_f | ONU3_disc_f | BRCT_disc_fr |
   | cards    | rame_num    | rame_num    | rame_num    | ame_num      |
   | ifOutErr | ONU1_err_fr | ONU2_err_fr | ONU3_err_fr | BRCT_err_fra |
   | ors      | ame_num     | ame_num     | ame_num     | me_num       |
   | ifOutQLe | ONU1_queue_ | ONU2_queue_ | ONU3_queue_ | BRCt_queue_f |
   | n        | frame_num   | frame_num   | frame_num   | rame_num     |
   +----------+-------------+-------------+-------------+--------------+

                                  Table 8

   OLT_MAC_Address is the MAC address of the OLT EPON interface.

   The following values will be set in the ifStack and ifInvStack tables
   related to this example:

   ifStackTable:

   ifStackHigherLayer=265535, ifStackLowerLayer=2 - map between the OLT
   physical interface and its broadcast virtual interface

   ifStackHigherLayer=200001, ifStackLowerLayer=2 - map between the OLT
   physical interface and its virtual interface of the 1st ONU

   ifStackHigherLayer=200002, ifStackLowerLayer=2 - map between the OLT
   physical interface and its virtual interface of the 2nd ONU

   ifStackHigherLayer=200003, ifStackLowerLayer=2 - map between the OLT
   physical interface and its virtual interface of the 3rd ONU

   ifInvStackTable:

   ifStackLowerLayer=2, ifStackHigherLayer=265535, - map between the
   broadcast interface of the OLT and the OLT physical interface

   ifStackLowerLayer=2, ifStackHigherLayer=200001 - map between the OLT
   virtual interface of the 1st ONU and the OLT physical interface

   ifStackLowerLayer=2, ifStackHigherLayer=200002 - map between the OLT
   virtual interface of the 2nd ONU and the OLT physical interface

   ifStackLowerLayer=2, ifStackHigherLayer=200003 - map between the OLT
   virtual interface of the 3rd ONU and the OLT physical interface




<span class="grey">Khermosh                    Standards Track                    [Page 28]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-29" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   The rows for the ONU interface, the OLT interface, and the OLT
   broadcast interface are created in initialization.

   The creation of a row for a virtual link is done when the virtual
   link is established (ONU registers), and deletion is done when the
   virtual link is deleted (ONU deregisters).

   The EPON MIB module also extends the Interface MIB module with a set
   of counters, which are specific for the EPON interface.  The EPON MIB
   module implements the same handling of the counters when the
   operation of the interface starts or stops.  The interface MIB
   document describes the possible behavior of counters when an
   interface is re-initialized using the ifCounterDiscontinuityTime
   indicator, indicating the discontinuity of the counters.  Please see
   <a href="./rfc2863#section-3.1.5">[RFC2863], Section&nbsp;3.1.5</a>, page 11 for more information.  The counters
   of the EPON MIB should be handled in a similar manner.

<span class="h3"><a class="selflink" id="section-4.2" href="#section-4.2">4.2</a>.  Relation to the IEEE 802.3 MAU MIBs</span>

   The MAU types of the EPON Interface are defined in the amended MAU
   MIB document.  This document assumes the implementation of the MAU
   MIB for this purpose and does not repeat the EPON MAU types.
   Therefore, implementing this module MUST require implementation of
   the MAU-MIB module [<a href="./rfc4836" title="&quot;Definitions of Managed Objects for IEEE 802.3 Medium Attachment Units (MAUs)&quot;">RFC4836</a>].

   The handling of the ifMAU tables for the EPON case is similar to the
   handling described in the former section for the Interface and Ether-
   like interface MIBs.  A single row exists for the ONU in the
   ifMauTable.  A row for each virtual link (N+1 rows) exists at the
   OLT, with a separate value of ifMauIfIndex for each virtual link.

   As specified above, the rows for the ONU interface, the OLT
   interface, and the OLT broadcast interface are created in
   initialization.

   The creation of a row for a virtual link is done when the virtual
   link is established (ONU registers), and deletion is done when the
   virtual link is deleted (ONU deregisters).

<span class="h3"><a class="selflink" id="section-4.3" href="#section-4.3">4.3</a>.  Relation to the EFM OAM MIB</span>

   The EPON interfaces are aimed to the optical access networks and most
   probably will be accompanied with the implementation of the OAM
   section of the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>].  Therefore, the EFM OAM MIB module
   [<a href="./rfc4878" title="&quot;Definitions and Managed Objects for Operations, Administration, and Maintenance (OAM) Functions on Ethernet-Like Interfaces&quot;">RFC4878</a>] MAY be implemented when this MIB module is implemented
   defining managed objects for the OAM layer that are complementary to
   the EFM EPON MIB module.  As the OAM is defined for a point-to-point
   link it is implemented in this case using the virtual links that are



<span class="grey">Khermosh                    Standards Track                    [Page 29]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-30" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   defined for the P2MP network, so that an instance is held for each
   Logical Link Identifier (LLID) of the EPON.  The corresponding
   ifIndex of the virtual link is used as the ifIndex of the tables of
   the OAM MIB module for this purpose.

<span class="h3"><a class="selflink" id="section-4.4" href="#section-4.4">4.4</a>.  Relation to the Bridge MIB</span>

   It is very probable that an EPON OLT will implement a bridging
   functionality above the EPON interface layer, bridging between the
   EPON users and the network.  Bridge functionality is specified at
   [<a href="#ref-802.1d" title="&quot;Institute of Electrical and Electronic Engineers, 802.1D-2004, IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges.&quot;">802.1d</a>].  In this scenario, the virtual ports of the EPON are
   corresponding to the virtual bridge ports.  There is a direct mapping
   between the bridge ports and the LLIDs, which are virtual EPON
   channels.

   Therefore, the bridge MIB modules ([<a href="./rfc4188" title="&quot;Definitions of Managed Objects for Bridges&quot;">RFC4188</a>] and [<a href="./rfc1525" title="&quot;Definitions of Managed Objects for Source Routing Bridges&quot;">RFC1525</a>]) MAY be
   implemented when the EFM EPON MIB module is implemented for an EPON
   OLT, defining managed objects for the bridge layer.

   The values of dot1dBasePortIfIndex would correspond to the ifIndex of
   the virtual port (1 for LLID1, 2 for LLID2, etc.).

   The broadcast virtual EPON interface of the OLT has no direct mapping
   to a virtual bridge port as it is not port specific but used for
   broadcast traffic.


























<span class="grey">Khermosh                    Standards Track                    [Page 30]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-31" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>.  Mapping of IEEE 802.3ah Managed Objects</span>

   This section contains the mapping between the managed objects defined
   in this document and the attributes defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 30.
   The tables are divided into relevant groups.

                    oMPCP managed object class (30.3.5)

   +----------------------------+-------------------------+------------+
   | dot3EPON MIB module object | IEEE802.3ah attribute   | Reference  |
   +----------------------------+-------------------------+------------+
   | ifIndex                    | aMPCPID                 | 30.3.5.1.1 |
   | dot3MpcpOperStatus         | aMPCPAdminState         | 30.3.5.1.2 |
   | dot3MpcpMode               | aMPCPMode               | 30.3.5.1.3 |
   | dot3MpcpLinkID             | aMPCPLinkID             | 30.3.5.1.4 |
   | dot3MpcpRemoteMACAddress   | aMPCPRemoteMACAddress   | 30.3.5.1.5 |
   | dot3MpcpRegistrationState  | aMPCPRegistrationState  | 30.3.5.1.6 |
   | dot3MpcpMACCtrlFramesTrans | aMPCPMACCtrlFramesTrans | 30.3.5.1.7 |
   | mitted                     | mitted                  |            |
   | dot3MpcpMACCtrlFramesRecei | aMPCPMACCtrlFramesRecei | 30.3.5.1.8 |
   | ved                        | ved                     |            |
   | dot3MpcpTxGate             | aMPCPTxGate             | 30.3.5.1.9 |
   | dot3MpcpTxRegAck           | aMPCPTxRegAck           | 30.3.5.1.1 |
   |                            |                         | 0          |
   | dot3MpcpTxRegister         | aMPCPTxRegister         | 30.3.5.1.1 |
   |                            |                         | 1          |
   | dot3MpcpTxRegRequest       | aMPCPTxRegRequest       | 30.3.5.1.1 |
   |                            |                         | 2          |
   | dot3MpcpTxReport           | aMPCPTxReport           | 30.3.5.1.1 |
   |                            |                         | 3          |
   | dot3MpcpRxGate             | aMPCPRxGate             | 30.3.5.1.1 |
   |                            |                         | 4          |
   | dot3MpcpRxRegAck           | aMPCPRxRegAck           | 30.3.5.1.1 |
   |                            |                         | 5          |
   | dot3MpcpRxRegister         | aMPCPRxRegister         | 30.3.5.1.1 |
   |                            |                         | 6          |
   | dot3MpcpRxRegRequest       | aMPCPRxRegRequest       | 30.3.5.1.1 |
   |                            |                         | 7          |
   | dot3MpcpRxReport           | aMPCPRxReport           | 30.3.5.1.1 |
   |                            |                         | 8          |
   | dot3MpcpTransmitElapsed    | aMPCPTransmitElapsed    | 30.3.5.1.1 |
   |                            |                         | 9          |
   | dot3MpcpReceiveElapsed     | aMPCPReceiveElapsed     | 30.3.5.1.2 |
   |                            |                         | 0          |
   | dot3MpcpRoundTripTime      | aMPCPRoundTripTime      | 30.3.5.1.2 |
   |                            |                         | 1          |
   | dot3MpcpDiscoveryWindowsSe | aMPCPDiscoveryWindowsSe | 30.3.5.1.2 |
   | nt                         | nt                      | 2          |



<span class="grey">Khermosh                    Standards Track                    [Page 31]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-32" ></span>
<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   +----------------------------+-------------------------+------------+
   | dot3EPON MIB module object | IEEE802.3ah attribute   | Reference  |
   +----------------------------+-------------------------+------------+
   | dot3MpcpDiscoveryTimeout   | aMPCPDiscoveryTimeout   | 30.3.5.1.2 |
   |                            |                         | 3          |
   | dot3MpcpMaximumPendingGran | aMPCPMaximumPendingGran | 30.3.5.1.2 |
   | ts                         | ts                      | 4          |
   | dot3MpcpAdminState         | aMPCPAdminControl       | 30.3.5.2.1 |
   | dot3MpcpSyncTime           | SyncTime                | 64.3.3.2   |
   +----------------------------+-------------------------+------------+

                                  Table 9

                oOMPEmulation managed object class (30.3.7)

   +-------------------------------------+-----------------+-----------+
   | dot3EPON MIB module object          | IEEE802.3ah     | Reference |
   |                                     | attribute       |           |
   +-------------------------------------+-----------------+-----------+
   | ifIndex                             | aOMPEmulationID | 30.3.7.1. |
   |                                     |                 | 1         |
   | dot3OmpEmulationType                | aOMPEmulationTy | 30.3.7.1. |
   |                                     | pe              | 2         |
   | dot3OmpEmulationSLDErrors           | aSLDErrors      | 30.3.7.1. |
   |                                     |                 | 3         |
   | dot3OmpEmulationCRC8Errors          | aCRC8Errors     | 30.3.7.1. |
   |                                     |                 | 4         |
   | dot3OmpEmulationGoodLLID            | aGoodLLID       | 30.3.7.1. |
   |                                     |                 | 5         |
   | dot3OmpEmulationOnuPonCastLLID      | aONUPONcastLLID | 30.3.7.1. |
   |                                     |                 | 6         |
   | dot3OmpEmulationOltPonCastLLID      | aOLTPONcastLLID | 30.3.7.1. |
   |                                     |                 | 7         |
   | dot3OmpEmulationBadLLID             | aBadLLID        | 30.3.7.1. |
   |                                     |                 | 8         |
   | dot3OmpEmulationBroadcastBitNotOnuL |                 |           |
   | Lid                                 |                 |           |
   | dot3OmpEmulationOnuLLIDNotBroadcast |                 |           |
   | dot3OmpEmulationBroadcastBitPlusOnu |                 |           |
   | Llid                                |                 |           |
   | dot3OmpEmulationNotBroadcastBitNotO |                 |           |
   | nuLlid                              |                 |           |
   +-------------------------------------+-----------------+-----------+

                                 Table 10






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                    oMAU managed object class (30.5.1)

   +--------------------------------+---------------------+------------+
   | dot3EPON MIB module object     | IEEE802.3ah         | Reference  |
   |                                | attribute           |            |
   +--------------------------------+---------------------+------------+
   | dot3EponFecPCSCodingViolation  | aPCSCodingViolation | 30.5.1.1.1 |
   |                                |                     | 2          |
   | dot3EponFecAbility             | aFECAbility         | 30.5.1.1.1 |
   |                                |                     | 3          |
   | dot3EponFecMode                | aFECmode            | 30.5.1.1.1 |
   |                                |                     | 4          |
   | dot3EponFecCorrectedBlocks     | aFECCorrectedBlocks | 30.5.1.1.1 |
   |                                |                     | 5          |
   | dot3EponFecUncorrectableBlocks | aFECUncorrectableBl | 30.5.1.1.1 |
   |                                | ocks                | 6          |
   | dot3EponFecBufferHeadCodingVio |                     |            |
   | lation                         |                     |            |
   +--------------------------------+---------------------+------------+

                                 Table 11

<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>.   Definitions - The DOT3 EPON MIB Module</span>

DOT3-EPON-MIB DEFINITIONS ::= BEGIN

     IMPORTS
         MODULE-IDENTITY, mib-2, OBJECT-TYPE, Counter32,
         Integer32, Unsigned32, Counter64
             FROM SNMPv2-SMI
         TruthValue, MacAddress
             FROM SNMPv2-TC
         ifIndex
             FROM IF-MIB
         MODULE-COMPLIANCE, OBJECT-GROUP
             FROM SNMPv2-CONF
         ;

dot3EponMIB MODULE-IDENTITY
    LAST-UPDATED "200703290000Z"  -- March 29, 2007
    ORGANIZATION "IETF Ethernet Interfaces and Hub MIB Working
                 Group"
    CONTACT-INFO
                 "WG charter:
              <a href="http://www.ietf.org/html.charters/hubmib-charter.html">http://www.ietf.org/html.charters/hubmib-charter.html</a>
                  Mailing Lists:
                    General Discussion: hubmib@ietf.org
                    To Subscribe: hubmib-request@ietf.org



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                    In Body: subscribe your_email_address
                    Chair: Bert Wijnen
                    Postal: Lucent Technologies
                            Schagen 33
                            3461 GL Linschoten
                            Netherlands
                    Tel: +31-348-407-775
                    E-mail: bwijnen@lucent.com

                    Editor: Lior Khermosh
                    Postal: PMC-SIERRA
                            Kohav Hertzelia bldg,
                            4 Hasadnaot St.
                            Hertzliya Pituach 46120,
                            ISRAEL
                            P.O.Box 2089 Hertzliya Pituach 46120 Israel
                    Tel: +972-9-9628000 Ext: 302
                    E-mail: lior_khermosh@pmc-sierra.com"
    DESCRIPTION
            "The objects in this MIB module are used to manage the
             Ethernet in the First Mile (EFM) Ethernet Passive Optical
             Network (EPON) Interfaces as defined in IEEE P802.3ah
             clauses 60, 64, and 65.
         The following reference is used throughout this MIB module:
           [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] refers to:
             Information technology - Telecommunications and
             information exchange between systems - Local and
             metropolitan area networks - Specific requirements -
             Part 3: Carrier sense multiple access with collision
             detection (CSMA/CD) access method and physical layer
             specifications - Media Access Control Parameters,
             Physical Layers and Management Parameters for subscriber
             access networks.  IEEE Std 802.3ah-2004, October 2004.

          Of particular interest are clause 64 (Multi-Point Control
          Protocol - MPCP), clause 65 (Point-to-Multipoint
          Reconciliation Sublayer - P2MP RS), clause 60 (Ethernet
          Passive Optical Network Physical Medium Dependent - EPON
          PMDs), clause 30, 'Management', and clause 45, 'Management
          Data Input/Output (MDIO) Interface'.

          Copyright (C) The IETF Trust (2007).  This version
          of this MIB module is part of 4837; see the RFC itself for
          full legal notices.

          Key abbreviations:
            BER - Bit Error Rate
            BW - bandwidth



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            CRC - Cyclic Redundancy Check
            EFM - Ethernet First Mile
            EPON - Ethernet Passive Optical Network
            FEC  - Forward Error Correction
            LLID - Logical Link Identifier
            MAC - Media Access Control
            Mbps - Megabit per second
            MDIO - Management Data Input/Output
            MPCP - Multi-Point Control Protocol
            OLT - Optical Line Terminal (Server unit of the EPON)
            OMP - Optical Multi-Point
            ONU - Optical Network Unit (Client unit of the EPON)
            P2MP - Point-to-Multipoint
            PHY - Physical Layer
            PMD - Physical Medium Dependent
            PON - Passive Optical Network
            RTT - Round Trip Time
            SLD - Start of LLID Delimiter
            TQ - Time Quanta
          "

    REVISION    "200703290000Z"  -- March 29, 2007
    DESCRIPTION "Initial version, published as <a href="./rfc4837">RFC 4837</a>."

    ::= { mib-2 155 }

dot3EponObjects OBJECT IDENTIFIER ::= { dot3EponMIB 1}

dot3EponConformance OBJECT IDENTIFIER ::= { dot3EponMIB 2}

-- MPCP MIB modules definitions ([<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 30.3.5)

dot3EponMpcpObjects
     OBJECT IDENTIFIER ::= { dot3EponObjects 1 }

dot3MpcpControlTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF Dot3MpcpControlEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "A Table of dot3 Multi-Point Control Protocol (MPCP)
             MIB objects.  The entries in the table are control and
             status objects of the MPCP.
             Each object has a row for every virtual link denoted by
             the corresponding ifIndex.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number



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             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff)."
    ::= { dot3EponMpcpObjects 1 }

dot3MpcpControlEntry OBJECT-TYPE
    SYNTAX  Dot3MpcpControlEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "An entry in the dot3 MPCP Control table.
             Rows exist for an OLT interface and an ONU interface.
             A row in the table is denoted by the ifIndex of the link
             and it is created when the ifIndex is created.
             The rows in the table for an ONU interface are created
             at system initialization.
             The row in the table corresponding to the OLT ifIndex
             and the row corresponding to the broadcast virtual link
             are created at system initialization.
             A row in the table corresponding to the ifIndex of a
             virtual links is created when a virtual link is
             established (ONU registers) and deleted when the virtual
             link is deleted (ONU deregisters)."
    INDEX  { ifIndex }
    ::= { dot3MpcpControlTable 1}

Dot3MpcpControlEntry ::=
    SEQUENCE {
        dot3MpcpOperStatus                   TruthValue,
        dot3MpcpAdminState                   TruthValue,
        dot3MpcpMode                         INTEGER,
        dot3MpcpSyncTime                     Unsigned32,
        dot3MpcpLinkID                       Unsigned32,
        dot3MpcpRemoteMACAddress             MacAddress,
        dot3MpcpRegistrationState            INTEGER,
        dot3MpcpTransmitElapsed              Unsigned32,
        dot3MpcpReceiveElapsed               Unsigned32,
        dot3MpcpRoundTripTime                Unsigned32,
        dot3MpcpMaximumPendingGrants         Unsigned32
    }

dot3MpcpOperStatus OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "This object reflects the operational state of the
             Multi-Point MAC Control sublayer as defined in



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             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.  When the value is true(1), the
             interface will act as if the Multi-Point Control Protocol
             is enabled.  When the value is false(2), the interface
             will act as if the Multi-Point Control Protocol is
             disabled.  The operational state can be changed using the
             dot3MpcpAdminState object.
             This object is applicable for an OLT, with the same
             value for all virtual interfaces, and for an ONU."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.2."
    ::= { dot3MpcpControlEntry 1 }

dot3MpcpAdminState OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
            "This object is used to define the admin state of the
             Multi-Point MAC Control sublayer, as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64, and to reflect its state.
             When selecting the value as true(1), the Multi-Point
             Control Protocol of the interface is enabled.
             When selecting the value as false(2), the Multi-Point
             Control Protocol of the interface is disabled.
             This object reflects the administrative state of the
             Multi-Point Control Protocol of the interface.
             The write operation is not restricted in this document
             and can be done at any time.  Changing
             dot3MpcpAdminState state can lead to disabling the
             Multi-Point Control Protocol on the respective interface,
             leading to the interruption of service for the users
             connected to the respective EPON interface.
             This object is applicable for an OLT, with the same
             value for all virtual interfaces, and for an ONU."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.2.1."
    DEFVAL { false }
    ::= { dot3MpcpControlEntry 2 }

dot3MpcpMode  OBJECT-TYPE
    SYNTAX  INTEGER {
            olt(1),
            onu(2)
    }
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "This object is used to identify the operational
             state of the Multi-Point MAC Control sublayer as
             defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.  Reading olt(1) for an



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             OLT (server) mode and onu(2) for an ONU (client) mode.
             This object is used to identify the operational mode
             for the MPCP tables.
             This object is applicable for an OLT, with the same
             value for all virtual interfaces, and for an ONU."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.3."
    DEFVAL { olt }
    ::= { dot3MpcpControlEntry 3 }

dot3MpcpSyncTime OBJECT-TYPE
    SYNTAX  Unsigned32
    UNITS       "TQ (16nsec)"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that reports the 'sync lock time' of the
             OLT receiver in increments of Time Quanta (TQ)-16ns
             as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clauses 60, 64, and 65.  The
             value returned shall be (sync lock time ns)/16.  If
             this value exceeds (2^32-1), the value (2^32-1) shall
             be returned.  This object is applicable for an OLT,
             with the same value for all virtual interfaces, and
             for an ONU."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 64.3.3.2."
   ::= { dot3MpcpControlEntry 4 }

dot3MpcpLinkID OBJECT-TYPE
    SYNTAX  Unsigned32
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that identifies the Logical Link
             Identifier (LLID) associated with the MAC of the virtual
             link as specified in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.2.2.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             The ONU and the corresponding virtual MAC of the OLT,
             for the same virtual link, have the same value.
             Value is assigned when the ONU registers.
             Value is freed when the ONU deregisters."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.4."
    ::= { dot3MpcpControlEntry 5 }

dot3MpcpRemoteMACAddress OBJECT-TYPE
    SYNTAX  MacAddress
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION



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            "An object that identifies the source_address
             parameter of the last MPCPDUs passed to the MAC Control.
             This value is updated on reception of a valid frame with
             1) a destination Field equal to the reserved multicast
             address for MAC Control as specified in [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>], Annex
             31A; 2) the lengthOrType field value equal to the reserved
             Type for MAC Control as specified in [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>], Annex
             31A; 3) an MPCP subtype value equal to the subtype
             reserved for MPCP as specified in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], Annex 31A.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             The value reflects the MAC address of the remote entity
             and therefore the OLT holds a value for each LLID, which
             is the MAC address of the ONU; the ONU has a single
             value that is the OLT MAC address."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.5."
    ::= { dot3MpcpControlEntry 6 }

dot3MpcpRegistrationState OBJECT-TYPE
    SYNTAX  INTEGER {
            unregistered(1),
            registering(2),
            registered(3)
    }
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that identifies the registration state
             of the Multi-Point MAC Control sublayer as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.  When this object has the
             enumeration unregistered(1), the interface is
             unregistered and may be used for registering a link
             partner.  When this object has the enumeration
             registering(2), the interface is in the process of
             registering a link-partner.  When this object has the
             enumeration registered(3), the interface has an
             established link-partner.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.6."
    ::= { dot3MpcpControlEntry 7 }

dot3MpcpTransmitElapsed OBJECT-TYPE
    SYNTAX  Unsigned32
    UNITS       "TQ (16nsec)"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION



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            "An object that reports the interval from the last
             MPCP frame transmission in increments of Time Quanta
             (TQ)-16ns.  The value returned shall be (interval from
             last MPCP frame transmission in ns)/16.  If this value
             exceeds (2^32-1), the value (2^32-1) shall be returned.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.19."
    ::= { dot3MpcpControlEntry 8 }

dot3MpcpReceiveElapsed OBJECT-TYPE
    SYNTAX  Unsigned32
    UNITS       "TQ (16nsec)"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that reports the interval from last MPCP frame
             reception in increments of Time Quanta (TQ)-16ns.  The
             value returned shall be (interval from last MPCP frame
             reception in ns)/16.  If this value exceeds (2^32-1), the
             value (2^32-1) shall be returned.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.20."
    ::= { dot3MpcpControlEntry 9 }

dot3MpcpRoundTripTime OBJECT-TYPE
    SYNTAX  Unsigned32 (0..'ffff'h)
    UNITS       "TQ (16nsec)"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that reports the MPCP round trip time in
             increments of Time Quanta (TQ)-16ns.  The value returned
             shall be (round trip time in ns)/16.  If this value
             exceeds (2^16-1), the value (2^16-1) shall be returned.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.21."
    ::= { dot3MpcpControlEntry 10 }

dot3MpcpMaximumPendingGrants OBJECT-TYPE
    SYNTAX  Unsigned32 (0..255)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that reports the maximum number of grants
             that an ONU can store for handling.  The maximum number



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


             of grants that an ONU can store for handling has a
             range of 0 to 255.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.24."
    ::= { dot3MpcpControlEntry 11 }

dot3MpcpStatTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF Dot3MpcpStatEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "This table defines the list of statistics counters of
             an interface implementing the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64 MPCP.
             Each object has a row for every virtual link denoted by
             the corresponding ifIndex.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number
             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff)."
::= { dot3EponMpcpObjects 2 }

dot3MpcpStatEntry OBJECT-TYPE
    SYNTAX     Dot3MpcpStatEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry in the table of statistics counters of the
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64, MPCP interface.
             Rows exist for an OLT interface and an ONU interface.
             A row in the table is denoted by the ifIndex of the link
             and it is created when the ifIndex is created.
             The rows in the table for an ONU interface are created
             at system initialization.
             The row in the table corresponding to the OLT ifIndex
             and the row corresponding to the broadcast virtual link
             are created at system initialization.
             A row in the table corresponding to the ifIndex of a
             virtual link is created when a virtual link is
             established (ONU registers) and deleted when the virtual
             link is deleted (ONU deregisters)."
    INDEX  { ifIndex}
    ::= { dot3MpcpStatTable 1 }

Dot3MpcpStatEntry ::=



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    SEQUENCE {
            dot3MpcpMACCtrlFramesTransmitted       Counter64,
            dot3MpcpMACCtrlFramesReceived          Counter64,
            dot3MpcpDiscoveryWindowsSent           Counter32,
            dot3MpcpDiscoveryTimeout               Counter32,
            dot3MpcpTxRegRequest                   Counter64,
            dot3MpcpRxRegRequest                   Counter64,
            dot3MpcpTxRegAck                       Counter64,
            dot3MpcpRxRegAck                       Counter64,
            dot3MpcpTxReport                       Counter64,
            dot3MpcpRxReport                       Counter64,
            dot3MpcpTxGate                         Counter64,
            dot3MpcpRxGate                         Counter64,
            dot3MpcpTxRegister                     Counter64,
            dot3MpcpRxRegister                     Counter64
    }

dot3MpcpMACCtrlFramesTransmitted OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of MPCP frames passed to the MAC sublayer for
             transmission.  This counter is incremented when a
             MA_CONTROL.request service primitive is generated within
             the MAC control sublayer with an opcode indicating an
             MPCP frame.
             This object is applicable for an OLT and an ONU.  At the
             OLT it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system, and at other
             times as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.7."
    ::= { dot3MpcpStatEntry 1 }

dot3MpcpMACCtrlFramesReceived OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of MPCP frames passed by the MAC sublayer to the
             MAC Control sublayer.  This counter is incremented when a
             ReceiveFrame function call returns a valid frame with
             1) a lengthOrType field value equal to the reserved



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             Type for 802.3_MAC_Control as specified in clause 31.4.1.3,
             and
             2) an opcode indicating an MPCP frame.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
   REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.8."
    ::= { dot3MpcpStatEntry 2}

dot3MpcpDiscoveryWindowsSent OBJECT-TYPE
    SYNTAX  Counter32
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of discovery windows generated.  The counter is
             incremented by one for each generated discovery window.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
   REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.22."
    ::= { dot3MpcpStatEntry 3}

dot3MpcpDiscoveryTimeout OBJECT-TYPE
    SYNTAX  Counter32
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a discovery timeout
             occurs.  Increment the counter by one for each discovery
             processing state-machine reset resulting from timeout
             waiting for message arrival.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
   REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.23."



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


    ::= { dot3MpcpStatEntry 4}

dot3MpcpTxRegRequest OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REGISTER_REQ MPCP
             frame transmission occurs.  Increment the counter by one
             for each REGISTER_REQ MPCP frame transmitted as defined
             in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.12."
    ::= { dot3MpcpStatEntry 5}

dot3MpcpRxRegRequest OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REGISTER_REQ MPCP
             frame reception occurs.
             Increment the counter by one for each REGISTER_REQ MPCP
             frame received as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
  REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.17."
    ::= { dot3MpcpStatEntry 6}

dot3MpcpTxRegAck OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only



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    STATUS  current
    DESCRIPTION
            "A count of the number of times a REGISTER_ACK MPCP
             frame transmission occurs.  Increment the counter by one
             for each REGISTER_ACK MPCP frame transmitted as defined
             in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
 REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.10."
    ::= { dot3MpcpStatEntry 7}

dot3MpcpRxRegAck OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REGISTER_ACK MPCP
             frame reception occurs.
             Increment the counter by one for each REGISTER_ACK MPCP
             frame received as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.15."
    ::= { dot3MpcpStatEntry 8}

dot3MpcpTxReport OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REPORT MPCP frame
             transmission occurs.  Increment the counter by one for
             each REPORT MPCP frame transmitted as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.



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             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.13."
    ::= { dot3MpcpStatEntry 9}

dot3MpcpRxReport OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REPORT MPCP frame
             reception occurs.
             Increment the counter by one for each REPORT MPCP frame
             received as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.18."
    ::= { dot3MpcpStatEntry 10}

dot3MpcpTxGate OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a GATE MPCP frame
             transmission occurs.
             Increment the counter by one for each GATE MPCP frame
             transmitted as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the



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             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.9."
    ::= { dot3MpcpStatEntry 11}

dot3MpcpRxGate OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a GATE MPCP frame
             reception occurs.
             Increment the counter by one for each GATE MPCP frame
             received as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.14."
    ::= { dot3MpcpStatEntry 12}

dot3MpcpTxRegister OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REGISTER MPCP frame
             transmission occurs.
             Increment the counter by one for each REGISTER MPCP
             frame transmitted as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
   REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.11."
    ::= { dot3MpcpStatEntry 13}

dot3MpcpRxRegister OBJECT-TYPE



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    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of the number of times a REGISTER MPCP frame
             reception occurs.
             Increment the counter by one for each REGISTER MPCP
             frame received as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.5.1.16."
    ::= { dot3MpcpStatEntry 14}

-- Optical Multi Point Emulation (OMPEmulation)
-- managed object definitions

dot3OmpEmulationObjects OBJECT IDENTIFIER ::={dot3EponObjects 2}

dot3OmpEmulationTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF Dot3OmpEmulationEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "A table of dot3 OmpEmulation MIB objects.  The table
             contain objects for the management of the OMPEmulation
             sublayer.
             Each object has a row for every virtual link denoted by
             the corresponding ifIndex.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number
             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff)."
    ::= { dot3OmpEmulationObjects 1 }

dot3OmpEmulationEntry OBJECT-TYPE
    SYNTAX  Dot3OmpEmulationEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


            "An entry in the dot3 OmpEmulation table.
             Rows exist for an OLT interface and an ONU interface.
             A row in the table is denoted by the ifIndex of the link
             and it is created when the ifIndex is created.
             The rows in the table for an ONU interface are created
             at system initialization.
             The row in the table corresponding to the OLT ifIndex
             and the row corresponding to the broadcast virtual link
             are created at system initialization.
             A row in the table corresponding to the ifIndex of a
             virtual links is created when a virtual link is
             established (ONU registers) and deleted when the virtual
             link is deleted (ONU deregisters)."
    INDEX  { ifIndex }
    ::= { dot3OmpEmulationTable 1 }

    Dot3OmpEmulationEntry ::=
    SEQUENCE {
            dot3OmpEmulationType               INTEGER
    }

dot3OmpEmulationType OBJECT-TYPE
    SYNTAX  INTEGER {
            unknown(1),
            olt(2),
            onu(3)
    }
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that indicates the mode of operation
             of the Reconciliation Sublayer for Point-to-Point
             Emulation (see [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1).  unknown(1) value
             is assigned in initialization; true state or type is not
             yet known.  olt(2) value is assigned when the sublayer is
             operating in OLT mode.  onu(3) value is assigned when the
             sublayer is operating in ONU mode.
             This object is applicable for an OLT, with the same
             value for all virtual interfaces, and for an ONU."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.2."
    ::= { dot3OmpEmulationEntry 1}

dot3OmpEmulationStatTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF Dot3OmpEmulationStatEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "This table defines the list of statistics counters of



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65, OMPEmulation sublayer.
             Each object has a row for every virtual link denoted by
             the corresponding ifIndex.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number
             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff)."
    ::= { dot3OmpEmulationObjects 2}

dot3OmpEmulationStatEntry OBJECT-TYPE
    SYNTAX     Dot3OmpEmulationStatEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry in the table of statistics counters of
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65, OMPEmulation sublayer.
             Rows exist for an OLT interface and an ONU interface.
             A row in the table is denoted by the ifIndex of the link
             and it is created when the ifIndex is created.
             The rows in the table for an ONU interface are created
             at system initialization.
             The row in the table corresponding to the OLT ifIndex
             and the row corresponding to the broadcast virtual link
             are created at system initialization.
             A row in the table corresponding to the ifIndex of a
             virtual links is created when a virtual link is
             established (ONU registers) and deleted when the virtual
             link is deleted (ONU deregisters)."
    INDEX  { ifIndex}
    ::= { dot3OmpEmulationStatTable 1 }

Dot3OmpEmulationStatEntry::=
    SEQUENCE {
            dot3OmpEmulationSLDErrors                 Counter64,
            dot3OmpEmulationCRC8Errors                Counter64,
            dot3OmpEmulationBadLLID                   Counter64,
            dot3OmpEmulationGoodLLID                  Counter64,
            dot3OmpEmulationOnuPonCastLLID            Counter64,
            dot3OmpEmulationOltPonCastLLID            Counter64,
            dot3OmpEmulationBroadcastBitNotOnuLlid    Counter64,
            dot3OmpEmulationOnuLLIDNotBroadcast       Counter64,
            dot3OmpEmulationBroadcastBitPlusOnuLlid    Counter64,
            dot3OmpEmulationNotBroadcastBitNotOnuLlid  Counter64
    }

dot3OmpEmulationSLDErrors OBJECT-TYPE



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that do not contain a valid
             SLD field as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.1.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.3."
    ::= { dot3OmpEmulationStatEntry 1}

dot3OmpEmulationCRC8Errors OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.1, but do
             not pass the CRC-8 check as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.3.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.4."
    ::= { dot3OmpEmulationStatEntry 2}

dot3OmpEmulationBadLLID OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.1, and
             pass the CRC-8 check, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.3, but are discarded due to the LLID check as
             defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.2.



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.8."
    ::= { dot3OmpEmulationStatEntry 3}

dot3OmpEmulationGoodLLID OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.1, and
             pass the CRC-8 check as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.3.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.5."
    ::= { dot3OmpEmulationStatEntry 4}

dot3OmpEmulationOnuPonCastLLID OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.1,
             pass the CRC-8 check, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.3, and meet the rules of acceptance for an
             ONU defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.2.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.6."
    ::= { dot3OmpEmulationStatEntry 5}

dot3OmpEmulationOltPonCastLLID OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.1,
             pass the CRC-8 check, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.3, and meet the rules of acceptance for an
             OLT defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 65.1.3.3.2.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the ONU, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
  REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.3.7.1.7."
    ::= { dot3OmpEmulationStatEntry 6}

dot3OmpEmulationBroadcastBitNotOnuLlid OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.1, pass the CRC-8 check, as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.3, and contain the broadcast
             bit in the LLID and not the ONU's LLID (frame accepted)
             as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
   ::= { dot3OmpEmulationStatEntry 7}




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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


dot3OmpEmulationOnuLLIDNotBroadcast OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.1, pass the CRC-8 check, as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.3, and contain the ONU's LLID
             as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
   ::= { dot3OmpEmulationStatEntry 8}

dot3OmpEmulationBroadcastBitPlusOnuLlid OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.1, pass the CRC-8 check, as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.3, and contain the broadcast
             bit in the LLID and match the ONU's LLID (frame
             reflected) as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    ::= { dot3OmpEmulationStatEntry 9}

dot3OmpEmulationNotBroadcastBitNotOnuLlid OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "frames"
    MAX-ACCESS  read-only
    STATUS  current



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    DESCRIPTION
            "A count of frames received that contain a valid SLD
             field, as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause
             65.1.3.3.1, pass the CRC-8 check, as defined in
             [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.1.3.3.3, and do not contain
             the ONU's LLID as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             At the OLT, the value should be zero.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    ::= { dot3OmpEmulationStatEntry 10}

--  FEC managed object definitions (30.5.1)

dot3EponFecObjects OBJECT IDENTIFIER ::={dot3EponObjects 3}

dot3EponFecTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF Dot3EponFecEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "A table of dot3 EPON FEC management objects.
             The entries in the table are control and status objects
             and statistic counters for the FEC layer.
             Each object has a row for every virtual link denoted by
             the corresponding ifIndex.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number
             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff)."
    ::= { dot3EponFecObjects 1 }

dot3EponFecEntry OBJECT-TYPE
    SYNTAX  Dot3EponFecEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "An entry in the dot3 EPON FEC table.
             Rows exist for an OLT interface and an ONU interface.
             A row in the table is denoted by the ifIndex of the link
             and it is created when the ifIndex is created.
             The rows in the table for an ONU interface are created



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             at system initialization.
             The row in the table corresponding to the OLT ifIndex
             and the row corresponding to the broadcast virtual link
             are created at system initialization.
             A row in the table corresponding to the ifIndex of a
             virtual links is created when a virtual link is
             established (ONU registers) and deleted when the virtual
             link is deleted (ONU deregisters)."
    INDEX  { ifIndex}
    ::= { dot3EponFecTable 1 }

Dot3EponFecEntry ::=
    SEQUENCE {
            dot3EponFecPCSCodingViolation           Counter64,
            dot3EponFecAbility                      INTEGER,
            dot3EponFecMode                         INTEGER,
            dot3EponFecCorrectedBlocks              Counter64,
            dot3EponFecUncorrectableBlocks          Counter64,
            dot3EponFecBufferHeadCodingViolation    Counter64
    }

dot3EponFecPCSCodingViolation OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "octets"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "For a 100 Mbps operation, it is a count of the number of
             times an invalid code-group is received, other than the
             /H/ code-group.  For a 1000 Mbps operation, it is a count
             of the number of times an invalid codegroup is received,
             other than the /V/ code-group.  /H/ denotes a special
             4b5b codeword of [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>] 100 Mbps PCS layer (clause 24),
             and /V/ denotes a special 8b10b codeword of the [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>]
             1000 Mbps PCS layer (clause 36).
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.5.1.1.12."
    ::= { dot3EponFecEntry 1}

dot3EponFecAbility OBJECT-TYPE
    SYNTAX  INTEGER {
            unknown(1),



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            supported(2),
            unsupported(3)
    }
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object that indicates the support of operation of the
             optional FEC sublayer of the 1000BASE-PX PHY specified
             in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.2.
             unknown(1) value is assigned in the initialization, for non
             FEC support state or type not yet known.  unsupported(3)
             value is assigned when the sublayer is not supported.
             supported(2) value is assigned when the sublayer is
             supported.
             This object is applicable for an OLT, with the same
             value for all virtual interfaces, and for an ONU.
             The FEC counters will have a zero value when the
             interface is not supporting FEC.
             The counters:
              dot3EponFecPCSCodingViolation - not affected by FEC
              ability.
              dot3EponFecCorrectedBlocks    - has a zero value when
               dot3EponFecAbility is unknown(1) and unsupported(3).
              dot3EponFecUncorrectableBlocks  - has a zero value when
               dot3EponFecAbility is unknown(1) and unsupported(3).
              dot3EponFecBufferHeadCodingViolation - has a zero value
               when dot3EponFecAbility is unknown(1) and
               unsupported(3)."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.5.1.1.13."
    ::= { dot3EponFecEntry 2}

dot3EponFecMode OBJECT-TYPE
    SYNTAX  INTEGER {
            unknown(1),
            disabled(2),
            enabled(3)
    }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
            "An object that defines the mode of operation of the
             optional FEC sublayer of the 1000BASE-PX PHY, specified
             in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 65.2, and reflects its state.
             A GET operation returns the current mode of operation
             of the PHY.  A SET operation changes the mode of
             operation of the PHY to the indicated value.
             unknown(1) value is assigned in the initialization for non
               FEC support state or type not yet known.



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             disabled(2) value is assigned when the FEC sublayer is
               operating in disabled mode.
             enabled(3) value is assigned when the FEC sublayer is
               operating in FEC mode.
             The write operation is not restricted in this document
             and can be done at any time.  Changing dot3EponFecMode
             state can lead to disabling the Forward Error Correction
             on the respective interface, which can lead to a
             degradation of the optical link, and therefore may lead
             to an interruption of service for the users connected to
             the respective EPON interface.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             The counting of
             the FEC counters will stop when the FEC of the interface
             is disabled.
             The counters:
              dot3EponFecPCSCodingViolation - not affected by FEC
              mode.
              dot3EponFecCorrectedBlocks - stops counting when
              Rx_FEC is not enabled.  (unknown(1) and disabled(2)).
              dot3EponFecUncorrectableBlocks - stops counting when
              Rx_FEC is not enabled (unknown(1) and disabled(2)).
              dot3EponFecBufferHeadCodingViolation - stops counting
              when Rx_FEC is not enabled (unknown(1) and
              disabled(2)).
             The object:
              dot3EponFecAbility - indicates the FEC ability and
              is not affected by the dot3EponFecMode object."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.5.1.1.14."
    DEFVAL { unknown }
    ::= { dot3EponFecEntry 3}

dot3EponFecCorrectedBlocks OBJECT-TYPE
    SYNTAX  Counter64
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "For 10PASS-TS, 2BASE-TL, and 1000BASE-PX PHYs, it is a
             count of corrected FEC blocks.  This counter will not
             increment for other PHY Types.  Increment the counter by
             one for each received block that is corrected by the FEC
             function in the PHY.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the



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             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.5.1.1.15."
    ::= { dot3EponFecEntry 4}

dot3EponFecUncorrectableBlocks OBJECT-TYPE
    SYNTAX  Counter64
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "For 10PASS-TS, 2BASE-TL, and 1000BASE-PX PHYs, it is a
             count of uncorrectable FEC blocks.  This counter will not
             increment for other PHY Types.  Increment the counter by
             one for each FEC block that is determined to be
             uncorrectable by the FEC function in the PHY.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    REFERENCE   "[<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], 30.5.1.1.16."
    ::= { dot3EponFecEntry 5}

dot3EponFecBufferHeadCodingViolation OBJECT-TYPE
    SYNTAX  Counter64
    UNITS      "octets"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "For a 1000 Mbps operation, it is a count of the number of
             invalid code-group received directly from the link.  The
             value has a meaning only in 1000 Mbps mode and it is
             zero otherwise.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             Discontinuities of this counter can occur at
             re-initialization of the management system and at other
             times, as indicated by the value of the
             ifCounterDiscontinuityTime object of the Interface MIB
             module."
    ::= { dot3EponFecEntry 6}

-- ExtendedPackage managed object definitions

dot3ExtPkgObjects OBJECT IDENTIFIER ::={dot3EponObjects 4}




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dot3ExtPkgControlObjects OBJECT IDENTIFIER ::= { dot3ExtPkgObjects 1}

dot3ExtPkgControlTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF Dot3ExtPkgControlEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "A table of Extended package Control management
             objects.  Entries in the table are control and status
             indication objects of an EPON interface, which are
             gathered in an extended package as an addition to the
             objects based on the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 30, attributes.
             Each object has a row for every virtual link denoted by
             the corresponding ifIndex.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number
             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff)."
    ::= { dot3ExtPkgControlObjects 1 }

dot3ExtPkgControlEntry OBJECT-TYPE
    SYNTAX  Dot3ExtPkgControlEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
            "An entry in the Extended package Control table.
             Rows exist for an OLT interface and an ONU interface.
             A row in the table is denoted by the ifIndex of the link
             and it is created when the ifIndex is created.
             The rows in the table for an ONU interface are created
             at system initialization.
             The row in the table corresponding to the OLT ifIndex
             and the row corresponding to the broadcast virtual link
             are created at system initialization.
             A row in the table corresponding to the ifIndex of a
             virtual links is created when a virtual link is
             established (ONU registers) and deleted when the virtual
             link is deleted (ONU deregisters)."
    INDEX  { ifIndex}
    ::= { dot3ExtPkgControlTable 1 }

Dot3ExtPkgControlEntry ::=
    SEQUENCE {
     dot3ExtPkgObjectReset                       INTEGER,
     dot3ExtPkgObjectPowerDown                   TruthValue,
     dot3ExtPkgObjectNumberOfLLIDs               Unsigned32,



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     dot3ExtPkgObjectFecEnabled                  INTEGER,
     dot3ExtPkgObjectReportMaximumNumQueues      Unsigned32,
     dot3ExtPkgObjectRegisterAction              INTEGER
    }

dot3ExtPkgObjectReset OBJECT-TYPE
    SYNTAX  INTEGER {
            running(1),
            reset(2)
    }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
            "This object is used to reset the EPON interface.  The
             interface may be unavailable while the reset occurs and
             data may be lost.
             Setting this object to running(1) will cause the
             interface to enter into running mode.  Setting this
             object to reset(2) will cause the interface to go into
             reset mode.  When getting running(1), the interface is in
             running mode.  When getting reset(2), the interface is in
             reset mode.
             The write operation is not restricted in this document
             and can be done at any time.  Changing
             dot3ExtPkgObjectReset state can lead to a reset of the
             respective interface, leading to an interruption of
             service for the users connected to the respective EPON
             interface.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             A reset for a specific virtual interface resets only
             this virtual interface and not the physical interface.
             Thus, a virtual link that is malfunctioning can be
             reset without affecting the operation of other virtual
             interfaces.
             The reset can cause Discontinuities in the values of the
             counters of the interface, similar to re-initialization
             of the management system.  Discontinuity should be
             indicated by the ifCounterDiscontinuityTime object of
             the Interface MIB module."
    DEFVAL { running }
    ::= { dot3ExtPkgControlEntry 1 }

dot3ExtPkgObjectPowerDown OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION



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            "This object is used to power down the EPON interface.
             The interface may be unavailable while the power down
             occurs and data may be lost.
             Setting this object to true(1) will cause the interface
             to enter into power down mode.  Setting this object to
             false(2) will cause the interface to go out of power
             down mode.  When getting true(1), the interface is in
             power down mode.  When getting false(2), the interface is
             not in power down mode.
             The write operation is not restricted in this document
             and can be done at any time.  Changing
             dot3ExtPkgObjectPowerDown state can lead to a power down
             of the respective interface, leading to an interruption
             of service of the users connected to the respective EPON
             interface.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface.
             A power down/up of a specific virtual interface affects
             only the virtual interface and not the physical
             interface.  Hence a virtual link, which needs a certain
             handling, can be powered down and then powered up without
             disrupting the operation of other virtual interfaces.
             The object is relevant when the admin state of the
             interface is active as set by the dot3MpcpAdminState."
    DEFVAL { false }
    ::= { dot3ExtPkgControlEntry 2 }

dot3ExtPkgObjectNumberOfLLIDs OBJECT-TYPE
    SYNTAX  Unsigned32
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "A read only object that indicates the number of
             registered LLIDs.  The initialization value is 0.
             This object is applicable for an OLT with the same
             value for all virtual interfaces and for an ONU.
             The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
             register (15-bit field and a broadcast bit) limiting the
             number of virtual links to 32768.  Typically the number
             of expected virtual links in a PON is like the number of
             ONUs, which is 32-64, plus an additional entry for
             broadcast LLID (with a value of 0xffff).  At the ONU the
             number of LLIDs for an interface is one."
    ::= { dot3ExtPkgControlEntry 3 }

dot3ExtPkgObjectFecEnabled OBJECT-TYPE
    SYNTAX  INTEGER {
            noFecEnabled(1),



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            fecTxEnabled(2),
            fecRxEnabled(3),
            fecTxRxEnabled(4)
    }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
           "An object defining the FEC mode of operation of the
            interface, and indicating its state.  The modes defined in
            this object are extensions to the FEC modes defined in
            the dot3EponFecMode object.
            When noFECEnabled(1), the interface does not enable FEC
            mode.
            When fecTxEnabled(2), the interface enables the FEC
            transmit mode.
            When fecRxEnabled(3), the interface enables the FEC
            receive mode.
            When fecTxRxEnabled(4), the interface enables the FEC
            transmit and receive mode.
            This object is applicable for an OLT and an ONU.  At the
            OLT, it has a distinct value for each virtual interface.
            The FEC counters are referring to the receive path.  The
            FEC counters will stop when the FEC receive mode of the
            interface is disabled, as defined by fecRxEnabled(3)
            and fecTxRxEnabled(4) values.
            The counters:
             dot3EponFecPCSCodingViolation - not affected by FEC
             mode.
             dot3EponFecCorrectedBlocks - stops counting when
             Rx_FEC is not enabled (noFecEnabled(1) and
             fecTxEnabled(2)).
             dot3EponFecUncorrectableBlocks - stops counting when
             Rx_FEC is not enabled (noFecEnabled(1) and
             fecTxEnabled(2)).
             dot3EponFecBufferHeadCodingViolation - stops counting
             when Rx_FEC is not enabled (noFecEnabled(1) and
             fecTxEnabled(2)).
            The objects:
             dot3EponFecAbility - indicates the FEC ability and is
             not affected by the FEC mode.
             dot3EponFecMode - indicates the FEC mode for combined RX
             and TX.
            The write operation is not restricted in this document
            and can be done at any time.  Changing
            dot3ExtPkgObjectFecEnabled state can lead to disabling
            the Forward Error Correction on the respective interface,
            which can lead to a degradation of the optical link, and
            therefore may lead to an interruption of service for the



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            users connected to the respective EPON interface."
    DEFVAL { noFecEnabled }
    ::= { dot3ExtPkgControlEntry 4 }

dot3ExtPkgObjectReportMaximumNumQueues OBJECT-TYPE
    SYNTAX  Unsigned32 (0..7)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
            "An object, that defines the maximal number of queues in
             the REPORT message as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.  For
             further information please see the description of the
             queue table.
             This object is applicable for an OLT and an ONU.  At the
             OLT, it has a distinct value for each virtual interface."
    DEFVAL { 0 }
    ::= { dot3ExtPkgControlEntry 5 }

dot3ExtPkgObjectRegisterAction OBJECT-TYPE
    SYNTAX  INTEGER {
            none(1),
            register(2),
            deregister(3),
            reregister(4)
    }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
           "An object configuring the registration state of an
           interface, and indicating its registration state.
            Write operation changes the registration state to its new
            value.
            Read operation returns the value of the state.
            The registration state is reflected in this object and in
            the dot3MpcpRegistrationState object.
            none(1) indicates an unknown state,
            register(2) indicates a registered LLID,
            deregister(3) indicates a deregistered LLID,
            reregister(4) indicates an LLID that is reregistering.
            The following list describes the operation of the
            interface, as specified in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], when a write
            operation is setting a value.
             none(1) - not doing any action.
             register(2) - registering an LLID that has been requested
             for registration (The LLID is in registering mode.
               dot3MpcpRegistrationState - registering(2) ).
               deregister(3) - deregisters an LLID that is registered
                 (dot3MpcpRegistrationState - registered(3) ).



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               reregister(4) - reregister an LLID that is registered
                 (dot3MpcpRegistrationState - registered(3) ).
               The behavior of an ONU and OLT interfaces, at each one
               of the detailed operation at each state, is described in
               the registration state machine of figure 64-22,
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>].
              This object is applicable for an OLT and an ONU.  At the
              OLT, it has a distinct value for each virtual interface.
              The write operation is not restricted in this document
              and can be done at any time.  Changing
              dot3ExtPkgObjectRegisterAction state can lead to a change
              in the registration state of the respective interface
              leading to a deregistration and an interruption of
              service of the users connected to the respective EPON
              interface."
      DEFVAL { none }
      ::= { dot3ExtPkgControlEntry 6 }

  dot3ExtPkgQueueTable OBJECT-TYPE
      SYNTAX  SEQUENCE OF Dot3ExtPkgQueueEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
              "A table of the extended package objects for queue
               management.  The [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] MPCP defines a report message
               of the occupancy of the transmit queues for the feedback
               BW request from the ONUs.  These queues serve the uplink
               transmission of the ONU and data is gathered there until
               the ONU is granted for transmission.
               The management table of the queues is added here mainly
               to control the reporting and to gather some statistics
               of their operation.  This table is not duplicating
               existing management objects of bridging queues,
               specified in [<a href="#ref-802.1d" title="&quot;Institute of Electrical and Electronic Engineers, 802.1D-2004, IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges.&quot;">802.1d</a>], since the existence of a
               dedicated transmit queuing mechanism is implied in the
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], and the ONU may be a device that is not a
               bridge with embedded bridging queues.
               The format of the REPORT message, as specified
               in [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>], is presented below:
               +-----------------------------------+
               |          Destination Address      |
               +-----------------------------------+
               |          Source Address           |
               +-----------------------------------+
               |          Length/Type              |
               +-----------------------------------+
               |          OpCode                   |
               +-----------------------------------+



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               |          TimeStamp                |
               +-----------------------------------+
               |          Number of queue Sets     |
               +-----------------------------------+   /|\
               |          Report bitmap            |    |
               +-----------------------------------+    |
               |          Queue 0 report           |    |
               +-----------------------------------+    | repeated for
               |          Queue 1 report           |    | every
               +-----------------------------------+    | queue_set
               |          Queue 2 report           |    |
               +-----------------------------------+    |
               |          Queue 3 report           |    |
               +-----------------------------------+    |
               |          Queue 4 report           |    |
               +-----------------------------------+    |
               |          Queue 5 report           |    |
               +-----------------------------------+    |
               |          Queue 6 report           |    |
               +-----------------------------------+    |
               |          Queue 7 report           |    |
               +-----------------------------------+   \|/
               |          Pad/reserved             |
               +-----------------------------------+
               |          FCS                      |
               +-----------------------------------+

               The 'Queue report' field reports the occupancy of each
               uplink transmission queue.
               The number of queue sets defines the number of the
               reported sets, as would be explained in the description
               of the dot3ExtPkgQueueSetsTable table.  For each set the
               report bitmap defines which queue is present in the
               report, meaning that although the MPCP REPORT message
               can report up to 8 queues in a REPORT message, the
               actual number is flexible.  The Queue table has a
               variable size that is limited by the
               dot3ExtPkgObjectReportMaximumNumQueues object, as an
               ONU can have fewer queues to report.
               The entries in the table are control and status
               indication objects for managing the queues of an EPON
               interface that are gathered in an extended package as
               an addition to the objects that are based on the
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] attributes.
               Each object has a row for every virtual link and for
               every queue in the report.
               The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
               register (15-bit field and a broadcast bit) limiting the



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               number of virtual links to 32768.  Typically the number
               of expected virtual links in a PON is like the number of
               ONUs, which is 32-64, plus an additional entry for
               broadcast LLID (with a value of 0xffff).
               The number of queues is between 0 and 7 and limited by
               dot3ExtPkgObjectReportMaximumNumQueues."
      ::= { dot3ExtPkgControlObjects 2 }

  dot3ExtPkgQueueEntry OBJECT-TYPE
      SYNTAX  Dot3ExtPkgQueueEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
              "An entry in the Extended package Queue table.  At the
               OLT, the rows exist for each ifIndex and dot3QueueIndex.
               At the ONU, rows exist for the single ifIndex for each
               dot3QueueIndex.
               Rows in the table are created when the ifIndex of the
               link is created.  A set of rows per queue are added for
               each ifIndex, denoted by the dot3QueueIndex.
               A set of rows per queue in the table, for an ONU
               interface, are created at the system initialization.
               A set of rows per queue in the table, corresponding to
               the OLT ifIndex and a set of rows per queue
               corresponding to the broadcast virtual link, are
               created at the system initialization.
               A set of rows per queue in the table, corresponding to
               the ifIndex of a virtual link, are created when the
               virtual link is established (ONU registers), and deleted
               when the virtual link is deleted (ONU deregisters)."
      INDEX  { ifIndex, dot3QueueIndex }
      ::= { dot3ExtPkgQueueTable 1 }

  Dot3ExtPkgQueueEntry ::=
      SEQUENCE {
       dot3QueueIndex                              Unsigned32,
       dot3ExtPkgObjectReportNumThreshold           Unsigned32,
       dot3ExtPkgObjectReportMaximumNumThreshold    Unsigned32,
       dot3ExtPkgStatTxFramesQueue                  Counter64,
       dot3ExtPkgStatRxFramesQueue                  Counter64,
       dot3ExtPkgStatDroppedFramesQueue             Counter64
      }

  dot3QueueIndex OBJECT-TYPE
      SYNTAX  Unsigned32 (0..7)
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION



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              "An object that identifies an index for the queue table
               reflecting the queue index of the queues that are
               reported in the MPCP REPORT message as defined in
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
               The number of queues is between 0 and 7, and limited by
               dot3ExtPkgObjectReportMaximumNumQueues."
      ::= { dot3ExtPkgQueueEntry 1 }

  dot3ExtPkgObjectReportNumThreshold OBJECT-TYPE
      SYNTAX  Unsigned32 (0..7)
      MAX-ACCESS  read-write
      STATUS  current
      DESCRIPTION
              "An object that defines the number of thresholds for each
               queue in the REPORT message as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>],
               clause 64.
               Each queue_set reporting will provide information on the
               queue occupancy of frames below the matching Threshold.
               Read operation reflects the number of thresholds.
               Write operation sets the number of thresholds for each
               queue.
               The write operation is not restricted in this document
               and can be done at any time.  Value cannot exceed the
               maximal value defined by the
               dot3ExtPkgObjectReportMaximumNumThreshold object.
               Changing dot3ExtPkgObjectReportNumThreshold can lead to
               a change in the reporting of the ONU interface and
               therefore to a change in the bandwidth allocation of the
               respective interface.  This change may lead a degradation
               or an interruption of service of the users connected to
               the respective EPON interface.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface
               and for each queue.  At the ONU, it has a distinct value
               for each queue."
      DEFVAL { 0 }
      ::= { dot3ExtPkgQueueEntry 2 }

  dot3ExtPkgObjectReportMaximumNumThreshold OBJECT-TYPE
      SYNTAX  Unsigned32 (0..7)
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
              "An object, that defines the maximal number of thresholds
               for each queue in the REPORT message as defined in
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.  Each queue_set reporting will
               provide information on the queue occupancy of frames
               below the matching Threshold.



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               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface
               and for each queue.  At the ONU, it has a distinct value
               for each queue."
      DEFVAL { 0 }
      ::= { dot3ExtPkgQueueEntry 3 }

   dot3ExtPkgStatTxFramesQueue OBJECT-TYPE
      SYNTAX  Counter64
      UNITS      "frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
              "A count of the number of times a frame transmission
               occurs from the corresponding 'Queue'.
               Increment the counter by one for each frame transmitted,
               which is an output of the 'Queue'.
               The 'Queue' marking matches the REPORT MPCP message
               Queue field as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface
               and for each queue.  At the ONU, it has a distinct value
               for each queue.
               At the OLT the value should be zero.
               Discontinuities of this counter can occur at
               re-initialization of the management system and at other
               times, as indicated by the value of the
               ifCounterDiscontinuityTime object of the Interface MIB
               module."
      ::= { dot3ExtPkgQueueEntry 4}

  dot3ExtPkgStatRxFramesQueue OBJECT-TYPE
      SYNTAX  Counter64
      UNITS      "frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
              "A count of the number of times a frame reception
               occurs from the corresponding 'Queue'.
               Increment the counter by one for each frame received,
               which is an input to the corresponding 'Queue'.
               The 'Queue' marking matches the REPORT MPCP message
               Queue field as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface
               and for each queue.  At the ONU, it has a distinct value
               for each queue.
               Discontinuities of this counter can occur at



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               re-initialization of the management system and at other
               times, as indicated by the value of the
               ifCounterDiscontinuityTime object of the Interface MIB
               module."
      ::= { dot3ExtPkgQueueEntry 5}

  dot3ExtPkgStatDroppedFramesQueue OBJECT-TYPE
      SYNTAX  Counter64
      UNITS      "frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
               "A count of the number of times a frame drop
               occurs from the corresponding 'Queue'.
               Increment the counter by one for each frame dropped
               from the corresponding 'Queue'.
               The 'Queue' marking matches the REPORT MPCP message
               Queue field as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface
               and for each queue.  At the ONU, it has a distinct value
               for each queue.
               At the OLT, the value should be zero.
               Discontinuities of this counter can occur at
               re-initialization of the management system and at other
               times, as indicated by the value of the
               ifCounterDiscontinuityTime object of the Interface MIB
               module."
     ::= { dot3ExtPkgQueueEntry 6}

  dot3ExtPkgQueueSetsTable OBJECT-TYPE
      SYNTAX  SEQUENCE OF Dot3ExtPkgQueueSetsEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
              "A table of Extended package objects used for the
               management of the queue_sets.  Entries are control and
               status indication objects of an EPON interface, which
               are gathered in an extended package as an addition to
               the objects based on the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] attributes.  The
               objects in this table are specific for the queue_sets,
               which are reported in the MPCP REPORT message as defined
               in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.
               The [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>] MPCP defines a report message of the
               occupancy of the transmit queues for the feedback BW
               request from the ONUs.  These queues serve the uplink
               transmission of the ONU and data is gathered there until
               the ONU is granted for transmission.



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


               The management table of the queues_sets is added here
               mainly to control the reporting and to gather some
               statistics of their operation.  This table is not
               duplicating existing management objects of bridging
               queues, specified in [<a href="#ref-802.1d" title="&quot;Institute of Electrical and Electronic Engineers, 802.1D-2004, IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges.&quot;">802.1d</a>], since the existence of a
               dedicated transmit queuing mechanism is implied in the
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], and the ONU may be a device that is not a
               bridge with embedded bridging queues.
               The format of the REPORT message, as specified
               in [<a href="#ref-802.3" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3-2002, &quot;">802.3</a>], is presented below:
               +-----------------------------------+
               |          Destination Address      |
               +-----------------------------------+
               |          Source Address           |
               +-----------------------------------+
               |          Length/Type              |
               +-----------------------------------+
               |          OpCode                   |
               +-----------------------------------+
               |          TimeStamp                |
               +-----------------------------------+
               |          Number of queue Sets     |
               +-----------------------------------+   /|\
               |          Report bitmap            |    |
               +-----------------------------------+    |
               |          Queue 0 report           |    |
               +-----------------------------------+    | repeated for
               |          Queue 1 report           |    | every
               +-----------------------------------+    | queue_set
               |          Queue 2 report           |    |
               +-----------------------------------+    |
               |          Queue 3 report           |    |
               +-----------------------------------+    |
               |          Queue 4 report           |    |
               +-----------------------------------+    |
               |          Queue 5 report           |    |
               +-----------------------------------+    |
               |          Queue 6 report           |    |
               +-----------------------------------+    |
               |          Queue 7 report           |    |
               +-----------------------------------+   \|/
               |          Pad/reserved             |
               +-----------------------------------+
               |          FCS                      |
               +-----------------------------------+

               As can be seen from the message format, the ONU
               interface reports of the status of up to 8 queues



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               and it can report in a single MPCP REPORT message
               of a few sets of queues.
               The number of queue_sets defines the number of the
               reported sets, and it can reach a value of up to 8.
               It means that an ONU can hold a variable number of
               sets between 0 and 7.
               The dot3ExtPkgQueueSetsTable table has a variable
               queue_set size that is limited by the
               dot3ExtPkgObjectReportMaximumNumThreshold object as an
               ONU can have fewer queue_sets to report.
               The 'Queue report' field reports the occupancy of each
               uplink transmission queue.  The queue_sets can be used to
               report the occupancy of the queues in a few levels as to
               allow granting, in an accurate manner, of only part of
               the data available in the queues.  A Threshold is
               defined for each queue_set to define the level of the
               queue that is counted for the report of the occupancy.
               The threshold is reflected in the queue_set table by the
               dot3ExtPkgObjectReportThreshold object.
               For each queue set, the report bitmap defines which
               queues are present in the report, meaning that
               although the MPCP REPORT message can report of up to 8
               queues in a REPORT message, the actual number is
               flexible.
               The dot3ExtPkgQueueSetsTable table has a variable queue
               size that is limited by the
               dot3ExtPkgObjectReportMaximumNumQueues object as an ONU
               can have fewer queues to report.
               Each object has a row for every virtual link, for each
               queue in the report and for each queue_set in the queue.
               The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
               register (15-bit field and a broadcast bit) limiting the
               number of virtual links to 32768.  Typically the number
               of expected virtual links in a PON is like the number of
               ONUs, which is 32-64, plus an additional entry for
               broadcast LLID (with a value of 0xffff).
               The number of queues is between 0 and 7 and limited by
               dot3ExtPkgObjectReportMaximumNumQueues.
               The number of queues_sets is between 0 and 7 and limited
               by dot3ExtPkgObjectReportMaximumNumThreshold."
      ::= { dot3ExtPkgControlObjects 3 }

  dot3ExtPkgQueueSetsEntry OBJECT-TYPE
      SYNTAX  Dot3ExtPkgQueueSetsEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
              "An entry in the Extended package queue_set table.  At



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               the OLT, the rows exist for each ifIndex,
               dot3QueueSetQueueIndex and dot3QueueSetIndex.  At the
               ONU, rows exist for the single ifIndex, for each
               dot3QueueSetQueueIndex and dot3QueueSetIndex.
               Rows in the table are created when the ifIndex of the
               link is created.  A set of rows per queue and per
               queue_set are added for each ifIndex, denoted by
               dot3QueueSetIndex and dot3QueueSetQueueIndex.
               A set of rows per queue and per queue_set in the table,
               for an ONU interface are created at system
               initialization.
               A set of rows per queue and per queue_Set in the table,
               corresponding to the OLT ifIndex and a set of rows per
               queue and per queue_set, corresponding to the broadcast
               virtual link, are created at system initialization.
               A set of rows per queue and per queue_set in the table,
               corresponding to the ifIndex of a virtual link are
               created when the virtual link is established (ONU
               registers) and deleted when the virtual link is deleted
               (ONU deregisters)."
               INDEX { ifIndex,
              dot3QueueSetQueueIndex,dot3QueueSetIndex}
      ::= { dot3ExtPkgQueueSetsTable 1 }

  Dot3ExtPkgQueueSetsEntry ::=
      SEQUENCE {
       dot3QueueSetQueueIndex                      Unsigned32,
       dot3QueueSetIndex                           Unsigned32,
       dot3ExtPkgObjectReportThreshold             Unsigned32
      }

  dot3QueueSetQueueIndex OBJECT-TYPE
      SYNTAX  Unsigned32 (0..7)
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
              "An object that identifies the queue index for the
               dot3ExtPkgQueueSetsTable table.  The queues are reported
               in the MPCP REPORT message as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>],
               clause 64.
               The number of queues is between 0 and 7, and limited by
               dot3ExtPkgObjectReportMaximumNumQueues.
               Value corresponds to the dot3QueueIndex of the queue
               table."
      ::= { dot3ExtPkgQueueSetsEntry 1 }

  dot3QueueSetIndex OBJECT-TYPE
      SYNTAX  Unsigned32 (0..7)



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      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
              "An object that identifies the queue_set index for the
               dot3ExtPkgQueueSetsTable table.  The queues are reported
               in the MPCP REPORT message as defined in [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>],
               clause 64.
               The number of queues_sets is between 0 and 7, and
               limited by dot3ExtPkgObjectReportMaximumNumThreshold."
      ::= { dot3ExtPkgQueueSetsEntry 2 }

      dot3ExtPkgObjectReportThreshold OBJECT-TYPE
      SYNTAX  Unsigned32
      UNITS       "TQ (16nsec)"
      MAX-ACCESS  read-write
      STATUS  current
      DESCRIPTION
              "An object that defines the value of a threshold report
               for each queue_set in the REPORT message as defined in
               [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], clause 64.  The number of sets for each queue
               is dot3ExtPkgObjectReportNumThreshold.
               In the REPORT message, each queue_set reporting will
               provide information on the occupancy of the queues for
               frames below the matching Threshold.
               The value returned shall be in Time quanta (TQ), which
               is 16nsec or 2 octets increments.
               Read operation provides the threshold value.  Write
               operation sets the value of the threshold.
               The write operation is not restricted in this document
               and can be done at any time.  Changing
               dot3ExtPkgObjectReportThreshold can lead to a change in
               the reporting of the ONU interface and therefore to a
               change in the bandwidth allocation of the respective
               interface.  This change may lead a degradation or an
               interruption of service for the users connected to the
               respective EPON interface.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface,
               for each queue and for each queue_set.  At the ONU, it has
               a distinct value for each queue and for each queue_set."
      DEFVAL { 0 }
      ::= { dot3ExtPkgQueueSetsEntry 3 }

  --Optical Interface status tables

  dot3ExtPkgOptIfTable OBJECT-TYPE
      SYNTAX     SEQUENCE OF Dot3ExtPkgOptIfEntry
      MAX-ACCESS not-accessible



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      STATUS     current
      DESCRIPTION
              "This table defines the control and status indication
               objects for the optical interface of the EPON interface.
               Each object has a row for every virtual link denoted by
               the corresponding ifIndex.
               The LLID field, as defined in the [<a href="#ref-802.3ah" title="&quot;Institute of Electrical and Electronic Engineers, IEEE Std 802.3ah-2004. Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks.&quot;">802.3ah</a>], is a 2-byte
               register (15-bit field and a broadcast bit) limiting the
               number of virtual links to 32768.  Typically the number
               of expected virtual links in a PON is like the number of
               ONUs, which is 32-64, plus an additional entry for
               broadcast LLID (with a value of 0xffff).
               Although the optical interface is a physical interface,
               there is a row in the table for each virtual interface.
               The reason for having a separate row for each virtual
               link is that the OLT has a separate link for each one of
               the ONUs.  For instance, ONUs could be in different
               distances with different link budgets and different
               receive powers, therefore having different power alarms.
               It is quite similar to a case of different physical
               interfaces."
      ::= { dot3ExtPkgControlObjects 5}

  dot3ExtPkgOptIfEntry OBJECT-TYPE
      SYNTAX     Dot3ExtPkgOptIfEntry
      MAX-ACCESS not-accessible
      STATUS     current
      DESCRIPTION
              "An entry in the optical interface table of the EPON
               interface.
               Rows exist for an OLT interface and an ONU interface.
               A row in the table is denoted by the ifIndex of the link
               and it is created when the ifIndex is created.
               The rows in the table for an ONU interface are created
               at system initialization.
               The row in the table corresponding to the OLT ifIndex
               and the row corresponding to the broadcast virtual link
               are created at system initialization.
               A row in the table corresponding to the ifIndex of a
               virtual links is created when a virtual link is
               established (ONU registers) and deleted when the virtual
               link is deleted (ONU deregisters)."
      INDEX       { ifIndex }
      ::= { dot3ExtPkgOptIfTable 1 }

   Dot3ExtPkgOptIfEntry ::=
     SEQUENCE {
       dot3ExtPkgOptIfSuspectedFlag             TruthValue,



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       dot3ExtPkgOptIfInputPower                Integer32,
       dot3ExtPkgOptIfLowInputPower             Integer32,
       dot3ExtPkgOptIfHighInputPower            Integer32,
       dot3ExtPkgOptIfLowerInputPowerThreshold  Integer32,
       dot3ExtPkgOptIfUpperInputPowerThreshold  Integer32,
       dot3ExtPkgOptIfOutputPower               Integer32,
       dot3ExtPkgOptIfLowOutputPower            Integer32,
       dot3ExtPkgOptIfHighOutputPower           Integer32,
       dot3ExtPkgOptIfLowerOutputPowerThreshold Integer32,
       dot3ExtPkgOptIfUpperOutputPowerThreshold Integer32,
       dot3ExtPkgOptIfSignalDetect              TruthValue,
       dot3ExtPkgOptIfTransmitAlarm             TruthValue,
       dot3ExtPkgOptIfTransmitEnable            TruthValue
       }

  dot3ExtPkgOptIfSuspectedFlag OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "This object is a reliability indication.
       If true, the data in this entry may be unreliable.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 1 }

  dot3ExtPkgOptIfInputPower OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The optical power monitored at the input.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
  ::= { dot3ExtPkgOptIfEntry 2 }

  dot3ExtPkgOptIfLowInputPower OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The lowest optical power monitored at the input during the
       current 15-minute interval.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 3 }



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  dot3ExtPkgOptIfHighInputPower OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The highest optical power monitored at the input during the
       current 15-minute interval.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 4 }

  dot3ExtPkgOptIfLowerInputPowerThreshold OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
      "The lower limit threshold on input power.  If
       dot3ExtPkgOptIfInputPower drops to this value or below,
       a Threshold Crossing Alert (TCA) should be sent.
       Reading will present the threshold value.  Writing will
       set the value of the threshold.
       The write operation is not restricted in this document
       and can be done at any time.  Changing
       dot3ExtPkgOptIfLowerInputPowerThreshold can lead to a Threshold
       Crossing Alert (TCA) being sent for the respective interface.
       This alert may be leading to an interruption of service for the
       users connected to the respective EPON interface, depending on
       the system action on such an alert.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 5 }

  dot3ExtPkgOptIfUpperInputPowerThreshold OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
      "The upper limit threshold on input power.  If
       dot3ExtPkgOptIfInputPower reaches or exceeds this value,
       a Threshold Crossing Alert (TCA) should be sent.
       Reading will present the threshold value.  Writing will
       set the value of the threshold.
       The write operation is not restricted in this document
       and can be done at any time.  Changing
       dot3ExtPkgOptIfUpperInputPowerThreshold can lead to a Threshold



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       Crossing Alert (TCA) being sent for the respective interface.
       This alert may be leading to an interruption of service for the
       users connected to the respective EPON interface, depending on
       the system action on such an alert.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
   ::= { dot3ExtPkgOptIfEntry 6 }

  dot3ExtPkgOptIfOutputPower OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The optical power monitored at the output.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 7 }

  dot3ExtPkgOptIfLowOutputPower OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The lowest optical power monitored at the output during the
       current 15-minute interval.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 8 }

  dot3ExtPkgOptIfHighOutputPower OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The highest optical power monitored at the output during the
       current 15-minute interval.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
   ::= { dot3ExtPkgOptIfEntry 9 }

  dot3ExtPkgOptIfLowerOutputPowerThreshold OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-write
    STATUS  current



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    DESCRIPTION
      "The lower limit threshold on output power.  If
       dot3ExtPkgOptIfOutputPower drops to this value or below,
       a Threshold Crossing Alert (TCA) should be sent.
       Reading will present the threshold value.  Writing will
       set the value of the threshold.
       The write operation is not restricted in this document
       and can be done at any time.  Changing
       dot3ExtPkgOptIfLowerOutputPowerThreshold can lead to a Threshold
       Crossing Alert (TCA) being sent for the respective interface.
       This alert may be leading to an interruption of service for the
       users connected to the respective EPON interface, depending on
       the system action on such an alert.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
  ::= { dot3ExtPkgOptIfEntry 10 }

  dot3ExtPkgOptIfUpperOutputPowerThreshold OBJECT-TYPE
    SYNTAX  Integer32
    UNITS  "0.1 dbm"
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
      "The upper limit threshold on output power.  If
       dot3ExtPkgOptIfOutputPower reaches or exceeds this value,
       a Threshold Crossing Alert (TCA) should be sent.
       Reading will present the threshold value.  Writing will
       set the value of the threshold.
       The write operation is not restricted in this document
       and can be done at any time.  Changing
       dot3ExtPkgOptIfUpperOutputPowerThreshold can lead to a Threshold
       Crossing Alert (TCA) being sent for the respective interface.
       This alert may be leading to an interruption of service of the
       users connected to the respective EPON interface, depending on
       the system action on such an alert.
       This object is applicable for an OLT and an ONU.  At the
       OLT, it has a distinct value for each virtual interface."
    ::= { dot3ExtPkgOptIfEntry 11 }

  dot3ExtPkgOptIfSignalDetect OBJECT-TYPE
      SYNTAX  TruthValue
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
              "When getting true(1), there is a valid optical signal at
               the receive that is above the optical power level for
               signal detection.  When getting false(2) the optical
               signal at the receive is below the optical power level



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               for signal detection.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface."
      DEFVAL { false }
      ::= { dot3ExtPkgOptIfEntry 12 }

  dot3ExtPkgOptIfTransmitAlarm OBJECT-TYPE
      SYNTAX  TruthValue
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
              "When getting true(1) there is a non-valid optical signal
               at the transmit of the interface, either a higher level
               or lower level than expected.  When getting false(2) the
               optical signal at the transmit is valid and in the
               required range.
               This object is applicable for an OLT and an ONU.  At the
               OLT, it has a distinct value for each virtual interface."
      DEFVAL { false }
      ::= { dot3ExtPkgOptIfEntry 13 }

  dot3ExtPkgOptIfTransmitEnable OBJECT-TYPE
      SYNTAX  TruthValue
      MAX-ACCESS  read-write
      STATUS  current
      DESCRIPTION
              "Setting this object to true(1) will cause the optical
               interface to start transmission (according to the
               control protocol specified for the logical interface).
               Setting this object to false(2) will cause the
               interface to stop the optical transmission.
               When getting true(1), the optical interface is in
               transmitting mode (obeying to the logical control
               protocol).
               When getting false(2), the optical interface is not in
               transmitting mode.
               The write operation is not restricted in this document
               and can be done at any time.  Changing
               dot3ExtPkgOptIfTransmitEnable state can lead to a halt
               in the optical transmission of the respective interface
               leading to an interruption of service of the users
               connected to the respective EPON interface.
               The object is relevant when the admin state of the
               interface is active as set by the dot3MpcpAdminState.
               This object is applicable for an OLT and an ONU.  At the
               OLT it, has a distinct value for each virtual interface."
      DEFVAL { false }
      ::= { dot3ExtPkgOptIfEntry 14 }



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  -- Conformance Statements

  -- Conformance Groups

  dot3EponGroups      OBJECT IDENTIFIER ::= { dot3EponConformance 1 }

  dot3MpcpGroupBase OBJECT-GROUP
      OBJECTS {
              dot3MpcpOperStatus,
              dot3MpcpAdminState,
              dot3MpcpMode,
              dot3MpcpSyncTime,
              dot3MpcpLinkID,
              dot3MpcpRemoteMACAddress,
              dot3MpcpRegistrationState,
              dot3MpcpMaximumPendingGrants,
              dot3MpcpTransmitElapsed,
              dot3MpcpReceiveElapsed,
              dot3MpcpRoundTripTime
      }
      STATUS  current
      DESCRIPTION
             "A collection of objects of dot3 Mpcp Control entity state
              definition.  Objects are per LLID."
      ::= { dot3EponGroups 1 }

  dot3MpcpGroupStat OBJECT-GROUP
      OBJECTS {
              dot3MpcpMACCtrlFramesTransmitted,
              dot3MpcpMACCtrlFramesReceived,
              dot3MpcpDiscoveryWindowsSent,
              dot3MpcpDiscoveryTimeout,
              dot3MpcpTxRegRequest,
              dot3MpcpRxRegRequest,
              dot3MpcpTxRegAck,
              dot3MpcpRxRegAck,
              dot3MpcpTxReport,
              dot3MpcpRxReport,
              dot3MpcpTxGate,
              dot3MpcpRxGate,
              dot3MpcpTxRegister,
              dot3MpcpRxRegister
      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3 Mpcp Statistics.
               Objects are per LLID."
      ::= { dot3EponGroups 2 }



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  dot3OmpeGroupID OBJECT-GROUP
      OBJECTS {
              dot3OmpEmulationType

      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3 OMP emulation entity
               state definition.  Objects are per LLID."
      ::= { dot3EponGroups 3 }

  dot3OmpeGroupStat OBJECT-GROUP
      OBJECTS {
              dot3OmpEmulationSLDErrors,
              dot3OmpEmulationCRC8Errors,
              dot3OmpEmulationBadLLID,
              dot3OmpEmulationGoodLLID,
              dot3OmpEmulationOnuPonCastLLID,
              dot3OmpEmulationOltPonCastLLID,
              dot3OmpEmulationBroadcastBitNotOnuLlid,
              dot3OmpEmulationOnuLLIDNotBroadcast,
              dot3OmpEmulationBroadcastBitPlusOnuLlid,
              dot3OmpEmulationNotBroadcastBitNotOnuLlid
      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3 OMP emulation
               Statistics.  Objects are per LLID."
      ::= { dot3EponGroups 4 }

  dot3EponFecGroupAll OBJECT-GROUP
      OBJECTS {
              dot3EponFecPCSCodingViolation,
              dot3EponFecAbility,
              dot3EponFecMode,
              dot3EponFecCorrectedBlocks,
              dot3EponFecUncorrectableBlocks,
              dot3EponFecBufferHeadCodingViolation
      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3 FEC group control and
              statistics.  Objects are per LLID."
      ::= { dot3EponGroups 5 }

  dot3ExtPkgGroupControl OBJECT-GROUP
      OBJECTS {
              dot3ExtPkgObjectReset,



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              dot3ExtPkgObjectPowerDown,
              dot3ExtPkgObjectNumberOfLLIDs,
              dot3ExtPkgObjectFecEnabled,
              dot3ExtPkgObjectReportMaximumNumQueues,
              dot3ExtPkgObjectRegisterAction
      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3ExtPkg control
               definition.  Objects are per LLID."
      ::= { dot3EponGroups 6 }

  dot3ExtPkgGroupQueue OBJECT-GROUP
      OBJECTS {
       dot3ExtPkgObjectReportNumThreshold,
       dot3ExtPkgObjectReportMaximumNumThreshold,
       dot3ExtPkgStatTxFramesQueue,
       dot3ExtPkgStatRxFramesQueue,
       dot3ExtPkgStatDroppedFramesQueue
      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3ExtPkg Queue
               control.  Objects are per LLID, per queue."
      ::= { dot3EponGroups 7 }

  dot3ExtPkgGroupQueueSets OBJECT-GROUP
      OBJECTS {
       dot3ExtPkgObjectReportThreshold
      }
      STATUS  current
      DESCRIPTION
              "A collection of objects of dot3ExtPkg queue_set
               control.  Objects are per LLID, per queue, per
               queue_set."
      ::= { dot3EponGroups 8 }

  dot3ExtPkgGroupOptIf OBJECT-GROUP
      OBJECTS {
     dot3ExtPkgOptIfSuspectedFlag,
       dot3ExtPkgOptIfInputPower,
       dot3ExtPkgOptIfLowInputPower,
       dot3ExtPkgOptIfHighInputPower,
       dot3ExtPkgOptIfLowerInputPowerThreshold,
       dot3ExtPkgOptIfUpperInputPowerThreshold,
       dot3ExtPkgOptIfOutputPower,
       dot3ExtPkgOptIfLowOutputPower,
       dot3ExtPkgOptIfHighOutputPower,



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       dot3ExtPkgOptIfLowerOutputPowerThreshold,
       dot3ExtPkgOptIfUpperOutputPowerThreshold,
       dot3ExtPkgOptIfSignalDetect,
       dot3ExtPkgOptIfTransmitAlarm,
       dot3ExtPkgOptIfTransmitEnable
       }
      STATUS  current
      DESCRIPTION
              "A collection of objects of control and status indication
               of the optical interface.
               Objects are per LLID."
      ::= { dot3EponGroups 9 }

  -- Compliance

     dot3EponCompliances
         OBJECT IDENTIFIER ::= { dot3EponConformance 2 }

  dot3MPCPCompliance MODULE-COMPLIANCE
      STATUS      current
      DESCRIPTION "The compliance statement for Multi-Point
                   Control Protocol interfaces."

      MODULE  -- this module
      MANDATORY-GROUPS { dot3MpcpGroupBase}

      GROUP       dot3MpcpGroupStat
     DESCRIPTION "This group is mandatory for all MPCP supporting
                  interfaces for statistics collection."
     ::= { dot3EponCompliances 1}

  dot3OmpeCompliance MODULE-COMPLIANCE
      STATUS      current
      DESCRIPTION "The compliance statement for OMPEmulation
                   interfaces."

      MODULE  -- this module
      MANDATORY-GROUPS { dot3OmpeGroupID}

      GROUP       dot3OmpeGroupStat
      DESCRIPTION "This group is mandatory for all OMPemulation
                   supporting interfaces for statistics collection."

      ::= { dot3EponCompliances 2}

  dot3EponFecCompliance MODULE-COMPLIANCE
      STATUS      current
      DESCRIPTION "The compliance statement for FEC EPON interfaces.



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                   This group is mandatory for all FEC supporting
                   interfaces for control and statistics collection."

      MODULE  -- this module
      MANDATORY-GROUPS { dot3EponFecGroupAll }

      ::= { dot3EponCompliances 3}

  dot3ExtPkgCompliance MODULE-COMPLIANCE
      STATUS      current
      DESCRIPTION "The compliance statement for EPON Interfaces
                   using the extended package."
      MODULE  -- this module
      MANDATORY-GROUPS { dot3ExtPkgGroupControl }

      GROUP       dot3ExtPkgGroupQueue
      DESCRIPTION " This group is mandatory for all EPON interfaces
                   supporting REPORT queue management of the extended
                   package."

      GROUP       dot3ExtPkgGroupQueueSets
      DESCRIPTION " This group is mandatory for all EPON interfaces
                   supporting REPORT queue_sets management of the
                   extended package."

      GROUP       dot3ExtPkgGroupOptIf
      DESCRIPTION "This group is mandatory for all EPON interfaces
                   supporting optical interfaces management,
                   of the extended package."

      ::= { dot3EponCompliances 4}

  END

<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>.  IANA Considerations</span>

   IANA has allocated a single object identifier for the MODULE-IDENTITY
   of the DOT3-EPON-MIB module under the MIB-2 tree.

   The MIB module in this document uses the following IANA-assigned
   OBJECT IDENTIFIER values recorded in the SMI Numbers registry:

         Descriptor        OBJECT IDENTIFIER value
         ----------        -----------------------

         dot3EponMIB        { mib-2 155 }





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<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>.  Acknowledgements</span>

   This document is the result of the efforts of the HUBMIB Working
   Group.  Some special thanks to Dan Romascanu, who was WG chair during
   most of the development of this document, and who carefully reviewed
   and commented on the initial versions of this document.  Also, some
   special thanks to Bert Wijnen, who is the current WG chair, for his
   review and comments on the final stages of this document.

   Special thanks are due to David Perkins for his detailed and helpful
   MIB Doctor review of this document.

   Also, some special thanks to some of the IEEE802.3ah Working Group
   people for their contribution and additional reviews of the document.

<span class="h2"><a class="selflink" id="section-9" href="#section-9">9</a>.  Security Considerations</span>

   There are number of managed objects defined in this MIB module that
   have a MAX-ACCESS clause of read-write or read-create.  Writing to
   these objects can have potentially disruptive effects on network
   operation, including:

   Changing dot3MpcpAdminState state can lead to disabling the
   Multi-Point Control Protocol on the respective interface, leading to
   the interruption of service for the users connected to the respective
   EPON interface.

   Changing dot3EponFecMode state can lead to disabling the Forward
   Error Correction on the respective interface, which can lead to a
   degradation of the optical link, and therefore may lead to an
   interruption of service for the users connected to the respective
   EPON interface.

   Changing dot3ExtPkgObjectReset state can lead to a reset of the
   respective interface leading to an interruption of service for the
   users connected to the respective EPON interface.

   Changing dot3ExtPkgObjectPowerDown state can lead to a power down of
   the respective interface, leading to an interruption of service for
   the users connected to the respective EPON interface.

   Changing dot3ExtPkgObjectFecEnabled state can lead to disabling the
   Forward Error Correction on the respective interface, which can lead
   to a degradation of the optical link, and therefore may lead to an
   interruption of service for the users connected to the respective
   EPON interface.





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   Changing dot3ExtPkgObjectRegisterAction state can lead to a change in
   the registration state of the respective interface, leading to a
   deregistration and an interruption of service for the users connected
   to the respective EPON interface.

   Changing dot3ExtPkgObjectReportNumThreshold can lead to a change in
   the reporting of the ONU interface and therefore to a change in the
   bandwidth allocation of the respective interface.  This change may
   lead a degradation or an interruption of service for the users
   connected to the respective EPON interface.

   Changing dot3ExtPkgObjectReportThreshold can lead to a change in the
   reporting of the ONU interface and therefore to a change in the
   bandwidth allocation of the respective interface.  This change may
   lead a degradation or an interruption of service for the users
   connected to the respective EPON interface.

   Changing dot3ExtPkgOptIfLowerInputPowerThreshold can lead to a
   Threshold Crossing Alert (TCA) being sent for the respective
   interface.  This alert may be leading to an interruption of service
   for the users connected to the respective EPON interface, depending
   on the system action on such an alert.

   Changing dot3ExtPkgOptIfUpperInputPowerThreshold can lead to a
   Threshold Crossing Alert (TCA) being sent for the respective
   interface.  This alert may be leading to an interruption of service
   for the users connected to the respective EPON interface, depending
   on the system action on such an alert.

   Changing dot3ExtPkgOptIfLowerOutputPowerThreshold can lead to a
   Threshold Crossing Alert (TCA) being sent for the respective
   interface.  This alert may be leading to an interruption of service
   for the users connected to the respective EPON interface, depending
   on the system action on such an alert.

   Changing dot3ExtPkgOptIfUpperOutputPowerThreshold can lead to a
   Threshold Crossing Alert (TCA) being sent for the respective
   interface.  This alert may be leading to an interruption of service
   for the users connected to the respective EPON interface, depending
   on the system action on such an alert.

   Changing dot3ExtPkgOptIfTransmitEnable state can lead to a halt in
   the optical transmission of the respective interface, leading to an
   interruption of service for the users connected to the respective
   EPON interface.






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   The user of this MIB module must therefore be aware that support for
   SET operations in a non-secure environment without proper protection
   can have a negative effect on network operations.

   The readable objects in this MIB module (i.e., those with MAX-ACCESS
   other than not-accessible) may be considered sensitive in some
   environments since, collectively, they provide information about the
   performance of network interfaces and can reveal some aspects of
   their configuration.  In such environments it is important to control
   even GET and NOTIFY access to these objects and possibly even to
   encrypt their values when sending them over the network via SNMP.

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secure (for example by using IPsec),
   even then, there is no control as to who on the secure network is
   allowed to access and GET/SET (read/change/create/delete) the objects
   in this MIB module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework (see <a href="./rfc3410#section-8">[RFC3410], section&nbsp;8</a>),
   including full support for the SNMPv3 cryptographic mechanisms (for
   authentication and privacy).

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED.  Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an
   instance of this MIB module is properly configured to give access to
   the objects only to those principals (users) that have legitimate
   rights to indeed GET or SET (change/create/delete) them.

<span class="h2"><a class="selflink" id="section-10" href="#section-10">10</a>.  References</span>

<span class="h3"><a class="selflink" id="section-10.1" href="#section-10.1">10.1</a>.  Normative References</span>

   [<a id="ref-802.1d">802.1d</a>]       IEEE, "Institute of Electrical and Electronic
                  Engineers,  802.1D-2004, IEEE Standard for Local and
                  metropolitan area networks Media Access Control (MAC)
                  Bridges.", June 2004.

   [<a id="ref-802.3">802.3</a>]        IEEE, "Institute of Electrical and Electronic
                  Engineers, IEEE Std 802.3-2002, "IEEE Standard for
                  Carrier Sense Multiple Access with Collision Detection
                  (CSMA/CD) Access Method and Physical Layer
                  Specifications.", December 2002.






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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   [<a id="ref-802.3ah">802.3ah</a>]      IEEE, "Institute of Electrical and Electronic
                  Engineers, IEEE Std 802.3ah-2004.  Information
                  technology - Telecommunications and information
                  exchange between systems - Local and metropolitan area
                  networks - Specific requirements - Part 3: Carrier
                  sense multiple access with collision detection
                  (CSMA/CD) access method and physical layer
                  specifications - Media Access Control Parameters,
                  Physical Layers and Management Parameters for
                  subscriber access networks.", IEEE Std 802.3ah-2004,
                  October 2004.

   [<a id="ref-ITU-T.G.975">ITU-T.G.975</a>]  ITU, "ITU-T, SERIES G: TRANSMISSION SYSTEMS AND MEDIA,
                  DIGITAL SYSTEMS AND NETWORKS Digital sections and
                  digital line system - Optical fibre submarine cable
                  systems Forward error correction for submarine
                  systems, ITU-T  Recommendation  G.975", October 2000.

   [<a id="ref-ITU-T.G.983">ITU-T.G.983</a>]  ITU, "ITU-T, SERIES G: TRANSMISSION SYSTEMS AND MEDIA,
                  DIGITAL SYSTEMS AND NETWORKS, Digital transmission
                  systems - Digital sections and digital line system -
                  Optical line systems for local and access networks
                  Broadband optical access systems based on Passive
                  Optical Networks (PON), ITU-T Recommendation G.983.1",
                  October 1998.

   [<a id="ref-RFC2119">RFC2119</a>]      Bradner, S., "Key words for use in RFCs to Indicate
                  Requirement Levels", <a href="https://www.rfc-editor.org/bcp/bcp14">BCP 14</a>, <a href="./rfc2119">RFC 2119</a>, March 1997.

   [<a id="ref-RFC2578">RFC2578</a>]      McCloghrie, K., Ed., Perkins, D., Ed., and J.
                  Schoenwaelder, Ed., "Structure of Management
                  Information Version 2 (SMIv2)", STD 58, <a href="./rfc2578">RFC 2578</a>,
                  April 1999.

   [<a id="ref-RFC2579">RFC2579</a>]      McCloghrie, K., Ed., Perkins, D., Ed., and J.
                  Schoenwaelder, Ed., "Textual Conventions for SMIv2",
                  STD 58, <a href="./rfc2579">RFC 2579</a>, April 1999.

   [<a id="ref-RFC2580">RFC2580</a>]      McCloghrie, K., Perkins, D., and J. Schoenwaelder,
                  "Conformance Statements for SMIv2", STD 58, <a href="./rfc2580">RFC 2580</a>,
                  April 1999.

   [<a id="ref-RFC2863">RFC2863</a>]      McCloghrie, K. and F. Kastenholz, "The Interfaces
                  Group MIB", <a href="./rfc2863">RFC 2863</a>, June 2000.

   [<a id="ref-RFC2864">RFC2864</a>]      McCloghrie, K. and G. Hanson, "The Inverted Stack
                  Table Extension to the Interfaces Group MIB",
                  <a href="./rfc2864">RFC 2864</a>, June 2000.



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<span class="grey"><a href="./rfc4837">RFC 4837</a>                Managed Objects of EPON                July 2007</span>


   [<a id="ref-RFC3635">RFC3635</a>]      Flick, J., "Definitions of Managed Objects for the
                  Ethernet-like Interface Types", <a href="./rfc3635">RFC 3635</a>,
                  September 2003.

   [<a id="ref-RFC4836">RFC4836</a>]      Beili, E., "Definitions of Managed Objects for IEEE
                  802.3 Medium Attachment Units (MAUs)", <a href="./rfc4836">RFC 4836</a>,
                  April 2007.

<span class="h3"><a class="selflink" id="section-10.2" href="#section-10.2">10.2</a>.  Informative References</span>

   [<a id="ref-RFC1525">RFC1525</a>]      Decker, E., McCloghrie, K., Langille, P., and A.
                  Rijsinghani, "Definitions of Managed Objects for
                  Source Routing Bridges", <a href="./rfc1525">RFC 1525</a>, September 1993.

   [<a id="ref-RFC3410">RFC3410</a>]      Case, J., Mundy, R., Partain, D., and B. Stewart,
                  "Introduction and Applicability Statements for
                  Internet-Standard Management Framework", <a href="./rfc3410">RFC 3410</a>,
                  December 2002.

   [<a id="ref-RFC4188">RFC4188</a>]      Norseth, K. and E. Bell, "Definitions of Managed
                  Objects for Bridges", <a href="./rfc4188">RFC 4188</a>, September 2005.

   [<a id="ref-RFC4878">RFC4878</a>]      Squire, M., "Definitions and Managed Objects for
                  Operations, Administration, and Maintenance (OAM)
                  Functions on Ethernet-Like Interfaces", <a href="./rfc4878">RFC 4878</a>,
                  June 2007.

Author's Address

   Lior Khermosh
   PMC-SIERRA
   Kohav Hertzelia bldg,
   4 Hasadnaot St.,
   Hertzliya Pituach,  46120
   ISRAEL

   Phone: +972-9-9628000 Ext: 302
   Fax:   +972-9-9628001
   EMail: lior_khermosh@pmc-sierra.com












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Full Copyright Statement

   Copyright (C) The IETF Trust (2007).

   This document is subject to the rights, licenses and restrictions
   contained in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a>, and except as set forth therein, the authors
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   The IETF invites any interested party to bring to its attention any
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.







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</pre>