<pre>Network Working Group                                      C. Srinivasan
Request for Comments: 3813                                Bloomberg L.P.
Category: Standard Track                                  A. Viswanathan
                                                  Force10 Networks, Inc.
                                                               T. Nadeau
                                                     Cisco Systems, Inc.
                                                               June 2004


         <span class="h1">Multiprotocol Label Switching (MPLS) Label Switching</span>
             <span class="h1">Router (LSR) Management Information Base (MIB)</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 Internet Society (2004).

Abstract

   This memo defines an portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects to configure and/or
   monitor a Multiprotocol Label Switching (MPLS) Label Switching Router
   (LSR).




















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Table of Contents

   <a href="#section-1">1</a>.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-2">2</a>
   <a href="#section-2">2</a>.  Terminology. . . . . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-3">3</a>
   <a href="#section-3">3</a>.  The SNMP Management Framework. . . . . . . . . . . . . . . . .  <a href="#page-3">3</a>
   <a href="#section-4">4</a>.  Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-3">3</a>
       <a href="#section-4.1">4.1</a>.  Summary of LSR MIB Module. . . . . . . . . . . . . . . .  <a href="#page-4">4</a>
   <a href="#section-5">5</a>.  Brief Description of MIB Module Objects. . . . . . . . . . . .  <a href="#page-4">4</a>
       <a href="#section-5.1">5.1</a>.  mplsInterfaceTable . . . . . . . . . . . . . . . . . . .  <a href="#page-4">4</a>
       <a href="#section-5.2">5.2</a>.  mplsInterfacePerfTable . . . . . . . . . . . . . . . . .  <a href="#page-4">4</a>
       <a href="#section-5.3">5.3</a>.  mplsInSegmentTable . . . . . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-5.4">5.4</a>.  mplsInSegmentPerfTable . . . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-5.5">5.5</a>.  mplsOutSegmentTable. . . . . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-5.6">5.6</a>.  mplsOutSegmentPerfTable. . . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-5.7">5.7</a>.  mplsXCTable. . . . . . . . . . . . . . . . . . . . . . .  <a href="#page-5">5</a>
       <a href="#section-5.8">5.8</a>.  mplsLabelStackTable. . . . . . . . . . . . . . . . . . .  <a href="#page-6">6</a>
       <a href="#section-5.9">5.9</a>.  mplsInSegmentMapTable. . . . . . . . . . . . . . . . . .  <a href="#page-6">6</a>
   <a href="#section-6">6</a>.  Use of 32-bit and 64-bit Counters. . . . . . . . . . . . . . .  <a href="#page-6">6</a>
   <a href="#section-7">7</a>.  Example of LSP Setup . . . . . . . . . . . . . . . . . . . . .  <a href="#page-6">6</a>
   <a href="#section-8">8</a>.  Application of the Interface Group to MPLS . . . . . . . . . .  <a href="#page-8">8</a>
       <a href="#section-8.1">8.1</a>.  Support of the MPLS Layer by ifTable . . . . . . . . . .  <a href="#page-9">9</a>
   <a href="#section-9">9</a>.  The Use of RowPointer. . . . . . . . . . . . . . . . . . . . . <a href="#page-10">10</a>
   <a href="#section-10">10</a>. MPLS Label Switching Router MIB Module Definitions . . . . . . <a href="#page-11">11</a>
   <a href="#section-11">11</a>. Security Considerations. . . . . . . . . . . . . . . . . . . . <a href="#page-55">55</a>
   <a href="#section-12">12</a>. Acknowledgments. . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-56">56</a>
   <a href="#section-13">13</a>. IANA Considerations. . . . . . . . . . . . . . . . . . . . . . <a href="#page-56">56</a>
       <a href="#section-13.1">13.1</a>. IANA Considerations for MPLS-LSR-STD-MIB . . . . . . . . <a href="#page-56">56</a>
   <a href="#section-14">14</a>. References . . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-57">57</a>
       <a href="#section-14.1">14.1</a>. Normative References . . . . . . . . . . . . . . . . . . <a href="#page-57">57</a>
       <a href="#section-14.2">14.2</a>. Informative References . . . . . . . . . . . . . . . . . <a href="#page-58">58</a>
   <a href="#section-15">15</a>. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . <a href="#page-59">59</a>
   <a href="#section-16">16</a>. Full Copyright Statement . . . . . . . . . . . . . . . . . . . <a href="#page-60">60</a>

<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>.  Introduction</span>

   This memo defines an portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects for modeling a
   Multiprotocol Label Switching (MPLS) [<a href="./rfc3031" title="&quot;Multiprotocol Label Switching Architecture&quot;">RFC3031</a>] Label Switching Router
   (LSR).

   Comments should be made directly to the MPLS mailing list at
   mpls@uu.net.

   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="https://www.rfc-editor.org/bcp/bcp14">BCP 14</a>, <a href="./rfc2119">RFC 2119</a>,
   reference [<a href="./rfc2119" title="&quot;Key Words for use in RFCs to Indicate Requirement Levels&quot;">RFC2119</a>].



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

   This document uses terminology from the document describing the MPLS
   architecture [<a href="./rfc3031" title="&quot;Multiprotocol Label Switching Architecture&quot;">RFC3031</a>].  A label switched path (LSP) is modeled as a
   connection consisting of one or more incoming segments (in-segments)
   and/or one or more outgoing segments (out-segments) at a LSR.  The
   association or interconnection of the in-segments and out-segments is
   accomplished by using a cross-connect.  We use the terminology
   "connection" and "LSP" interchangeably where the meaning is clear
   from the context.

      in-segment        This is analogous to an MPLS label.
      out-segment       This is analogous to an MPLS label.
      cross-connect     This describes the conceptual connection
                        between a set of in-segments and out-segments.
                        Note that either set may be 0; that is, a
                        cross-connect may connect only out-segments
                        together with no in-segments in the case
                        where an LSP is originating on an LSR.

<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>.  The SNMP 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-4" href="#section-4">4</a>.  Outline</span>

   Configuring LSPs through an LSR involves the following steps:

   -  Enabling MPLS on MPLS capable interfaces.

   -  Configuring in-segments and out-segments.

   -  Setting up the cross-connect table to associate segments and/or to
      indicate connection origination and termination.

   -  Optionally specifying label stack actions.




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   -  Optionally specifying segment traffic parameters.

<span class="h3"><a class="selflink" id="section-4.1" href="#section-4.1">4.1</a>.  Summary of LSR MIB Module</span>

   The MIB objects for performing these actions consist of the following
   tables:

   -  The interface table (mplsInterfaceTable), which is used for
      revealing the MPLS protocol on MPLS-capable interfaces.

   -  The in-segment (mplsInSegmentTable) and out-segment
      (mplsOutSegmentTable) tables, which are used for configuring LSP
      segments at an LSR.

   -  The cross-connect table (mplsXCTable), which is used to associate
      in and out segments together, in order to form a cross-connect.

   -  The label stack table (mplsLabelStackTable), which is used for
      specifying label stack operations.

   Further, the MPLS in-segment and out-segment performance tables,
   mplsInSegmentPerfTable and mplsOutSegmentPerfTable, contain the
   objects necessary to measure the performance of LSPs, and
   mplsInterfacePerfTable has objects to measure MPLS performance on a
   per-interface basis.

   These tables are described in the subsequent sections.

<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>.  Brief Description of MIB Module Objects</span>

   Sections <a href="#section-5.1">5.1</a>-<a href="#section-5.2">5.2</a> describe objects pertaining to MPLS-capable
   interfaces of an LSR.  The objects described in Sections <a href="#section-5.3">5.3</a>-<a href="#section-5.8">5.8</a>,
   were derived from the Incoming Label Map (ILM) and Next Hop Label
   Forwarding Entry (NHLFE) as specified in the MPLS architecture
   document [<a href="./rfc3031" title="&quot;Multiprotocol Label Switching Architecture&quot;">RFC3031</a>].  It is appropriate to note that the in-segment,
   out-segment, and cross-connect tables were modeled after similar
   tables found in [<a href="./rfc2515" title="&quot;Definitions of Managed Objects for ATM Management&quot;">RFC2515</a>].

<span class="h3"><a class="selflink" id="section-5.1" href="#section-5.1">5.1</a>.  mplsInterfaceTable</span>

   This table represents the interfaces that are MPLS capable.  An LSR
   creates an entry in this table for every MPLS capable interface on
   that LSR.

<span class="h3"><a class="selflink" id="section-5.2" href="#section-5.2">5.2</a>.  mplsInterfacePerfTable</span>

   This table contains objects to measure the MPLS performance of MPLS
   capable interfaces and is an AUGMENT to mplsInterfaceTable.



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<span class="h3"><a class="selflink" id="section-5.3" href="#section-5.3">5.3</a>.  mplsInSegmentTable</span>

   This table contains a description of the incoming MPLS segments to an
   LSR and their associated parameters.  This index for this table is
   mplsInSegmentIndex.  The index structure of this table is
   specifically designed to handle many different MPLS implementations
   that manage their labels both in a distributed and centralized
   manner.

   The table is designed to handle existing MPLS labels as well as
   future label strategies that may require labels longer than the ones
   defined in <a href="./rfc3031">RFC3031</a>.  In these cases, the object mplsInSegmentLabelPtr
   may be used indicate the first accessible object in a separate table
   that can be used to represent the label because it is too long to be
   represented in a single 32-bit value (mplsInSegmentLabel).

<span class="h3"><a class="selflink" id="section-5.4" href="#section-5.4">5.4</a>.  mplsInSegmentPerfTable</span>

   The MPLS in-Segment Performance Table has objects to measure the
   performance of an incoming segment configured on an LSR.  It is an
   AUGMENT to mplsInSegmentTable.  High capacity counters are provided
   for objects that are likely to wrap around quickly on high-speed
   interfaces.

<span class="h3"><a class="selflink" id="section-5.5" href="#section-5.5">5.5</a>.  mplsOutSegmentTable</span>

   The out-Segment Table contains a description of the outgoing MPLS
   segments at an LSR and their associated parameters.

<span class="h3"><a class="selflink" id="section-5.6" href="#section-5.6">5.6</a>.  mplsOutSegmentPerfTable</span>

   The MPLS out-Segment Table contains objects to measure the
   performance of an outgoing segment configured on an LSR.  It is an
   AUGMENT to mplsOutSegmentTable.  High capacity counters are provided
   for objects that are likely to wrap around quickly on high-speed
   interfaces.

<span class="h3"><a class="selflink" id="section-5.7" href="#section-5.7">5.7</a>.  mplsXCTable</span>

   The mplsXCTable specifies information for associating segments
   together in order to instruct the LSR to switch between the specified
   segments.  It supports point-to-point, point-to-multipoint and
   multipoint-to-point connections.








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   The operational status object indicates the packet forwarding state
   of a cross-connect entry.  For example, when the operational status
   objects is 'down' it indicates that the specified cross-connect entry
   will not forward packets.  Likewise, when it is set to 'up' it
   indicates that packets will be forwarded.

   The administrative status object indicates the forwarding state
   desired by the operator.

<span class="h3"><a class="selflink" id="section-5.8" href="#section-5.8">5.8</a>.  mplsLabelStackTable</span>

   The mplsLabelStackTable specifies the label stack to be pushed onto a
   packet, beneath the top label.  Entries to this table are referred to
   from mplsXCTable.

<span class="h3"><a class="selflink" id="section-5.9" href="#section-5.9">5.9</a>   mplsInSegmentMapTable</span>

   The mplsInSegmentMapTable specifies the mapping from the
   mplsInSegmentIndex to the corresponding mplsInSegmentInterface and
   mplsInSegmentLabel objects.  The purpose of this table is to provide
   the manager with an alternative means by which to locate in-segments.
   For instance, this table can be useful when tracing LSPs from LSR to
   LSR by first following the in-segment to out-segment, retrieving the
   outgoing label and out-going interface, and then proceeding to
   interrogate this table at the next-hop LSR to continue the trace.

<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>.  Use of 32-bit and 64-bit Counters</span>

   64-bit counters are provided in this MIB module for high speed
   interfaces where the use of 32-bit counters might be impractical. The
   requirements on the use of 32-bit and 64-bit counters (copied
   verbatim from [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>]) are as follows.

   For interfaces that operate at 20,000,000 (20 million) bits per
   second or less, 32-bit byte and packet counters MUST be supported.
   For interfaces that operate faster than 20,000,000 bits/second, and
   slower than 650,000,000 bits/second, 32-bit packet counters MUST be
   supported and 64-bit octet counters MUST be supported.  For
   interfaces that operate at 650,000,000 bits/second or faster, 64-bit
   packet counters AND 64-bit octet counters MUST be supported.

<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>.  Example of LSP Setup</span>

   In this section we provide a brief example of setting up an LSP using
   this MIB module's objects.  While this example is not meant to
   illustrate every nuance of the MIB module, it is intended as an aid
   to understanding some of the key concepts. It is meant to be read
   after going through the MIB module itself.



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   Suppose that one would like to manually create a best-effort,
   unidirectional LSP.  Assume that the LSP enters the LSR via MPLS
   interface A with ifIndex 12 and exits the LSR via MPLS interface B
   with ifIndex 13.  Let us assume that we do not wish to impose any
   additional label stack beneath the top label on the outgoing labeled
   packets.  The following example illustrates which rows and
   corresponding objects might be created to accomplish this.  Those
   objects relevant to illustrating the relationships amongst different
   tables are shown here.  Other objects may be needed before conceptual
   row activation can happen.

   The RowStatus values shown in this section are those to be used in
   the set request, typically createAndGo(4) which is used to create the
   conceptual row and have its status immediately set to active.  Note
   that the proper use of createAndGo(4) requires that all columns that
   do not have a DEFVAL to be specified in order for the SET to succeed.
   In the example below we have not specify all such columns for the
   sake of keeping the example short.  Please keep in mind that all such
   fields must be send during a real SET operation.  A subsequent
   retrieval operation on the conceptual row will return a different
   value, such as active(1).  Please see [<a href="./rfc2579" title="&quot;Textual Conventions for SMIv2&quot;">RFC2579</a>] for a detailed
   discussion on the use of RowStatus.

   We first create a cross-connect entry that associates the desired
   segments together.

   In mplsXCTable:
   {
      mplsXCIndex                = 0x02,
      mplsXCInSegmentIndex       = 0x00000015,
      mplsXCOutSegmentIndex      = 0x01,

      mplsXCLspId                = 0x0102 -- unique ID
      mplsXCLabelStackIndex      = 0x00, -- only a single
                                         -- outgoing label
      mplsXCRowStatus            = createAndGo(4)
   }

   Next, we create the appropriate in-segment and out-segment entries
   based on the cross-connect.  Note that some agents may wish to
   automatically create the in and out-segments based on the cross-
   connect creation.

   In mplsInSegmentTable:
   {
      mplsInSegmentIndex              = 0x00000015

      mplsInSegmentLabel              = 21, -- incoming label



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      mplsInSegmentNPop               = 1,
      mplsInSegmentInterface          = 12, -- incoming interface

      -- RowPointer MUST point to the first accessible column.
      mplsInSegmentLabelPtr           = 0.0,
      mplsInSegmentTrafficParamPtr    = 0.0,

      mplsInSegmentRowStatus          = createAndGo(4)
   }

   In mplsOutSegmentTable:
   {
      mplsOutSegmentIndex             = 0x01,
      mplsOutSegmentInterface         = 13, -- outgoing interface
      mplsOutSegmentPushTopLabel      = true(1),
      mplsOutSegmentTopLabel          = 22, -- outgoing label

      -- RowPointer MUST point to the first accessible column.
      mplsOutSegmentTrafficParamPtr   = 0.0,
      mplsOutSegmentLabelPtr          = 0.0,

      mplsOutSegmentRowStatus         = createAndGo(4)
   }

   Note that the mplsInSegmentXCIndex and mplsOutSegmentXCIndex objects
   will automatically be populated with the string 0x02 when these
   segments are referred to from the corresponding cross-connect entry.

<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>.  Application of the Interface Group to MPLS</span>

   <a href="./rfc2863">RFC2863</a> defines generic managed objects for managing interfaces.
   This memo contains the media-specific extensions to the Interfaces
   Group for managing MPLS interfaces.

   This memo assumes the interpretation of the Interfaces Group to be in
   accordance with [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>] which states that the interfaces table
   (ifTable) contains information on the managed resource's interfaces
   and that each sub-layer below the internetwork layer of a network
   interface is considered an interface.  Thus, the MPLS interface is
   represented as an entry in the ifTable.  The inter-relation of
   entries in the ifTable is defined by Interfaces Stack Group defined
   in [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].









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   When using MPLS interfaces, the interface stack table might appear as
   follows:

      +----------------------------------------+
      |   MPLS interface; ifType = mpls(166)   +
      +----------------------------------------+
      |            Underlying Layer            +
      +----------------------------------------+

   In the above diagram, "Underlying Layer" refers to the ifIndex of any
   interface type for which MPLS interworking has been defined.
   Examples include ATM, Frame Relay, Ethernet, etc.

<span class="h3"><a class="selflink" id="section-8.1" href="#section-8.1">8.1</a>.  Support of the MPLS Layer by ifTable</span>

   Some specific interpretations of ifTable for the MPLS layer follow.

   Object        Use for the MPLS layer

   ifIndex       Each MPLS interface is represented by an ifEntry.

   ifDescr       Description of the MPLS interface.

   ifType        The value that is allocated for MPLS is 166.

   ifSpeed       The total bandwidth in bits per second for use by
                 the MPLS layer.

   ifPhysAddress Unused.

   ifAdminStatus This variable indicates the administrator's intent
                 as to whether MPLS should be enabled, disabled, or
                 running in some diagnostic testing mode on this
                 interface.  Also see [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

   ifOperStatus  This value reflects the actual operational status
                 of MPLS on this interface.

   ifLastChange  See [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

   ifInOctets    The number of received octets over the interface,
                 i.e., the number of received, octets received as
                 labeled packets.

   ifOutOctets   The number of transmitted octets over the
                 interface, i.e., the number of octets transmitted
                 as labeled packets.




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   ifInErrors    The number of labeled packets dropped due to
                 uncorrectable errors.

   ifInUnknownProtos
                 The number of received packets discarded during
                 packet header validation, including packets with
                 unrecognized label values.

   ifOutErrors   See [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

   ifName        Textual name (unique on this system) of the
                 interface or an octet string of zero length.

   ifLinkUpDownTrapEnable
                 Default is disabled (2).

   ifConnectorPresent
                 Set to false (2).

   ifHighSpeed   See [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

   ifHCInOctets  The 64-bit version of ifInOctets; supported if
                 required by the compliance statements in [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

   ifHCOutOctets The 64-bit version of ifOutOctets; supported if
                 required by the compliance statements in [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

   ifAlias       The non-volatile 'alias' name for the interface as
                 specified by a network manager.

   ifCounterDiscontinuityTime
                 See [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>].

<span class="h2"><a class="selflink" id="section-9" href="#section-9">9</a>.  The Use of RowPointer</span>

   RowPointer is a textual convention used to identify a conceptual row
   in a MIB Table by pointing to the first accessible object in that
   row.  In this MIB module, the trafficParamPtr object from either the
   mplsInSegmentTable or mplsOutSegmentTable SHOULD indicate the first
   accessible column in an entry in the MplsTunnelResourceEntry in the
   MPLS-TE-STD-MIB [<a href="./rfc3812" title="&quot;Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB)&quot;">RFC3812</a>] to indicate the traffic parameter settings
   for this segment, if it represents an LSP used for a TE tunnel.

   The trafficParamPtr object may optionally point at an externally
   defined traffic parameter specification table.  A value of
   zeroDotZero indicates best-effort treatment.  By having the same
   value of this object, two or more segments can indicate resource
   sharing of such things as LSP queue space, etc.



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


<span class="h2"><a class="selflink" id="section-10" href="#section-10">10</a>.  MPLS Label Switching Router MIB Module Definitions</span>

MPLS-LSR-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
   MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
   Integer32, Counter32, Unsigned32, Counter64, Gauge32,
   zeroDotZero
      FROM SNMPv2-SMI                                    -- [<a href="./rfc2578" title="&quot;Structure of Management Information Version 2 (SMIv2)&quot;">RFC2578</a>]
   MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
      FROM SNMPv2-CONF                                   -- [<a href="./rfc2580" title="&quot;Conformance Statements for SMIv2&quot;">RFC2580</a>]
   TruthValue, RowStatus, StorageType, RowPointer,
   TimeStamp, TEXTUAL-CONVENTION
      FROM SNMPv2-TC                                     -- [<a href="./rfc2579" title="&quot;Textual Conventions for SMIv2&quot;">RFC2579</a>]
   InterfaceIndexOrZero, ifGeneralInformationGroup,
   ifCounterDiscontinuityGroup
      FROM IF-MIB                                        -- [<a href="./rfc2863" title="&quot;The Interfaces Group MIB&quot;">RFC2863</a>]
   mplsStdMIB, MplsLSPID, MplsLabel, MplsBitRate,
   MplsOwner
      FROM MPLS-TC-STD-MIB                               -- [<a href="./rfc3811" title="&quot;Definition of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management&quot;">RFC3811</a>]
   AddressFamilyNumbers
      FROM IANA-ADDRESS-FAMILY-NUMBERS-MIB               -- [IANAFamily]
   InetAddress, InetAddressType
      FROM INET-ADDRESS-MIB                              -- [<a href="./rfc3291" title="&quot;Textual Conventions for Internet Network Addresses&quot;">RFC3291</a>]
   ;

mplsLsrStdMIB MODULE-IDENTITY
   LAST-UPDATED "200406030000Z"  -- June 3, 2004
   ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"
   CONTACT-INFO
       "        Cheenu Srinivasan
                Bloomberg L.P.
        Email:  cheenu@bloomberg.net

                Arun Viswanathan
                Force10 Networks, Inc.
        Email:  arunv@force10networks.com

                Thomas D. Nadeau
                Cisco Systems, Inc.
        Email:  tnadeau@cisco.com

        Comments about this document should be emailed
        directly to the MPLS working group mailing list at
        mpls@uu.net."

   DESCRIPTION
       "This MIB module contains managed object definitions for
        the Multiprotocol Label Switching (MPLS) Router as



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        defined in: Rosen, E., Viswanathan, A., and R.
        Callon, Multiprotocol Label Switching Architecture,
        <a href="./rfc3031">RFC 3031</a>, January 2001.

        Copyright (C) The Internet Society (2004). The
        initial version of this MIB module was published
        in <a href="./rfc3812">RFC 3812</a>. For full legal notices see the RFC
        itself or see:
        <a href="http://www.ietf.org/copyrights/ianamib.html">http://www.ietf.org/copyrights/ianamib.html</a>"

   -- Revision history.
   REVISION
       "200406030000Z"  -- June 3, 2004
   DESCRIPTION
       "Initial revision, published as part of <a href="./rfc3813">RFC 3813</a>."

   ::= { mplsStdMIB 2 }

-- TEXTUAL-CONVENTIONs

MplsIndexType ::= TEXTUAL-CONVENTION
   STATUS              current
   DESCRIPTION
       "This is an octet string that can be used as a table
        index in cases where a large addressable space is
        required such as on an LSR where many applications
        may be provisioning labels.

        Note that the string containing the single octet with
        the value 0x00 is a reserved value used to represent
        special cases. When this TEXTUAL-CONVENTION is used
        as the SYNTAX of an object, the DESCRIPTION clause
        MUST specify if this special value is valid and if so
        what the special meaning is.

        In systems that provide write access to the MPLS-LSR-STD
        MIB, mplsIndexType SHOULD be used as a simple multi-digit
        integer encoded as an octet string.
        No further overloading of the meaning of an index SHOULD
        be made.

        In systems that do not offer write access to the MPLS-LSR-STD
        MIB, the mplsIndexType may contain implicit formatting that is
        specific to the implementation to convey additional
        information such as interface index, physical card or
        device, or application id. The interpretation of this
        additional formatting is implementation dependent and
        not covered in this document. Such formatting MUST



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        NOT impact the basic functionality of read-only access
        to the MPLS-LSR-STD MIB by management applications that are
        not aware of the formatting rules."
   SYNTAX              OCTET STRING (SIZE(1..24))

MplsIndexNextType ::= TEXTUAL-CONVENTION
   STATUS              current
   DESCRIPTION
       "When a MIB module is used for configuration, an object with
        this SYNTAX always contains a legal value (a non-zero-length
        string) for an index that is not currently used in the relevant
        table. The Command Generator (Network Management Application)
        reads this variable and uses the (non-zero-length string)
        value read when creating a new row with an SNMP SET.

        When the SET is performed, the Command Responder (agent) must
        determine whether the value is indeed still unused; Two Network
        Management Applications may attempt to create a row
        (configuration entry) simultaneously and use the same value. If
        it is currently unused, the SET succeeds and the Command
        Responder (agent) changes the value of this object, according
        to an implementation-specific algorithm.  If the value is in
        use, however, the SET fails.  The Network Management
        Application must then re-read this variable to obtain a new
        usable value.

        Note that the string containing the single octet with
        the value 0x00 is a reserved value used to represent
        the special case where no additional indexes can be
        provisioned, or in systems that do not offer
        write access, objects defined using this TEXTUAL-CONVENTION
        MUST return the string containing the single
        octet with the value 0x00."
   SYNTAX              OCTET STRING (SIZE(1..24))

-- Top level components of this MIB module.

-- Notifications
mplsLsrNotifications OBJECT IDENTIFIER ::= { mplsLsrStdMIB 0 }

-- Tables, Scalars
mplsLsrObjects       OBJECT IDENTIFIER ::= { mplsLsrStdMIB 1 }

-- Conformance
mplsLsrConformance   OBJECT IDENTIFIER ::= { mplsLsrStdMIB 2 }

-- MPLS Interface Table.
mplsInterfaceTable  OBJECT-TYPE



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   SYNTAX        SEQUENCE OF MplsInterfaceEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies per-interface MPLS capability
        and associated information."
   ::= { mplsLsrObjects 1 }

mplsInterfaceEntry OBJECT-TYPE
   SYNTAX        MplsInterfaceEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "A conceptual row in this table is created
        automatically by an LSR for every interface capable
        of supporting MPLS and which is configured to do so.
        A conceptual row in this table will exist if and only if
        a corresponding entry in ifTable exists with ifType =
        mpls(166). If this associated entry in ifTable is
        operationally disabled (thus removing MPLS
        capabilities on that interface), the corresponding
        entry in this table MUST be deleted shortly thereafter.
        An conceptual row with index 0 is created if the LSR
        supports per-platform labels. This conceptual row
        represents the per-platform label space and contains
        parameters that apply to all interfaces that participate
        in the per-platform label space. Other conceptual rows
        in this table represent MPLS interfaces that may
        participate in either the per-platform or per-
        interface label spaces, or both.  Implementations
        that either only support per-platform labels,
        or have only them configured, may choose to return
        just the mplsInterfaceEntry of 0 and not return
        the other rows. This will greatly reduce the number
        of objects returned. Further information about label
        space participation of an interface is provided in
        the DESCRIPTION clause of
        mplsInterfaceLabelParticipationType."
   INDEX { mplsInterfaceIndex }
   ::= { mplsInterfaceTable 1 }

MplsInterfaceEntry ::= SEQUENCE {
  mplsInterfaceIndex                  InterfaceIndexOrZero,
  mplsInterfaceLabelMinIn             MplsLabel,
  mplsInterfaceLabelMaxIn             MplsLabel,
  mplsInterfaceLabelMinOut            MplsLabel,
  mplsInterfaceLabelMaxOut            MplsLabel,
  mplsInterfaceTotalBandwidth         MplsBitRate,



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  mplsInterfaceAvailableBandwidth     MplsBitRate,
  mplsInterfaceLabelParticipationType BITS
}

mplsInterfaceIndex OBJECT-TYPE
   SYNTAX        InterfaceIndexOrZero
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This is a unique index for an entry in the
        MplsInterfaceTable.  A non-zero index for an
        entry indicates the ifIndex for the corresponding
        interface entry of the MPLS-layer in the ifTable.
        The entry with index 0 represents the per-platform
        label space and contains parameters that apply to all
        interfaces that participate in the per-platform label
        space. Other entries defined in this table represent
        additional MPLS interfaces that may participate in either
        the per-platform or per-interface label spaces, or both."
   REFERENCE
       "<a href="./rfc2863">RFC 2863</a> - The Interfaces Group MIB, McCloghrie, K.,
        and F. Kastenholtz, June 2000"
   ::= { mplsInterfaceEntry 1 }

mplsInterfaceLabelMinIn OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This is the minimum value of an MPLS label that this
        LSR is willing to receive on this interface."
   ::= { mplsInterfaceEntry 2 }

mplsInterfaceLabelMaxIn OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This is the maximum value of an MPLS label that this
        LSR is willing to receive on this interface."
   ::= { mplsInterfaceEntry 3 }

mplsInterfaceLabelMinOut OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This is the minimum value of an MPLS label that this



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        LSR is willing to send on this interface."
   ::= { mplsInterfaceEntry 4 }

mplsInterfaceLabelMaxOut OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This is the maximum value of an MPLS label that this
        LSR is willing to send on this interface."
   ::= { mplsInterfaceEntry 5 }

mplsInterfaceTotalBandwidth OBJECT-TYPE
   SYNTAX        MplsBitRate
   UNITS         "kilobits per second"
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This value indicates the total amount of usable
        bandwidth on this interface and is specified in
        kilobits per second (Kbps).  This variable is not
        applicable when applied to the interface with index
        0. When this value cannot be measured, this value
        should contain the nominal bandwidth."
::= { mplsInterfaceEntry 6 }

mplsInterfaceAvailableBandwidth OBJECT-TYPE
   SYNTAX        MplsBitRate
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This value indicates the total amount of available
        bandwidth available on this interface and is
        specified in kilobits per second (Kbps).  This value
        is calculated as the difference between the amount
        of bandwidth currently in use and that specified in
        mplsInterfaceTotalBandwidth.  This variable is not
        applicable when applied to the interface with index
        0. When this value cannot be measured, this value
        should contain the nominal bandwidth."
::= { mplsInterfaceEntry 7 }

mplsInterfaceLabelParticipationType OBJECT-TYPE
   SYNTAX  BITS {
                  perPlatform (0),
                  perInterface (1)
              }
   MAX-ACCESS    read-only



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   STATUS        current
   DESCRIPTION
       "If the value of the mplsInterfaceIndex for this
        entry is zero, then this entry corresponds to the
        per-platform label space for all interfaces configured
        to use that label space. In this case the perPlatform(0)
        bit MUST be set; the perInterface(1) bit is meaningless
        and MUST be ignored.

        The remainder of this description applies to entries
        with a non-zero value of mplsInterfaceIndex.

        If the perInterface(1) bit is set then the value of
        mplsInterfaceLabelMinIn, mplsInterfaceLabelMaxIn,
        mplsInterfaceLabelMinOut, and
        mplsInterfaceLabelMaxOut for this entry reflect the
        label ranges for this interface.

        If only the perPlatform(0) bit is set, then the value of
        mplsInterfaceLabelMinIn, mplsInterfaceLabelMaxIn,
        mplsInterfaceLabelMinOut, and
        mplsInterfaceLabelMaxOut for this entry MUST be
        identical to the instance of these objects with
        index 0.  These objects may only vary from the entry
        with index 0 if both the perPlatform(0) and perInterface(1)
        bits are set.

        In all cases, at a minimum one of the perPlatform(0) or
        perInterface(1) bits MUST be set to indicate that
        at least one label space is in use by this interface. In
        all cases, agents MUST ensure that label ranges are
        specified consistently and MUST return an
        inconsistentValue error when they do not."
   REFERENCE
       "Rosen, E., Viswanathan, A., and R. Callon,
        Multiprotocol Label Switching Architecture, <a href="./rfc3031">RFC</a>
        <a href="./rfc3031">3031</a>, January 2001."
::= { mplsInterfaceEntry 8 }

-- End of mplsInterfaceTable


-- MPLS Interface Performance Table.

mplsInterfacePerfTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsInterfacePerfEntry
   MAX-ACCESS    not-accessible
   STATUS        current



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   DESCRIPTION
       "This table provides MPLS performance information on
        a per-interface basis."
   ::= { mplsLsrObjects 2 }

mplsInterfacePerfEntry OBJECT-TYPE
   SYNTAX        MplsInterfacePerfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table is created by the LSR for
        every interface capable of supporting MPLS.  Its is
        an extension to the mplsInterfaceEntry table.
        Note that the discontinuity behavior of entries in
        this table MUST be based on the corresponding
        ifEntry's ifDiscontinuityTime."
   AUGMENTS      { mplsInterfaceEntry }
      ::= { mplsInterfacePerfTable 1 }

MplsInterfacePerfEntry ::= SEQUENCE {
      -- incoming direction
      mplsInterfacePerfInLabelsInUse         Gauge32,
      mplsInterfacePerfInLabelLookupFailures Counter32,

      -- outgoing direction
      mplsInterfacePerfOutLabelsInUse      Gauge32,
      mplsInterfacePerfOutFragmentedPkts   Counter32
   }

mplsInterfacePerfInLabelsInUse OBJECT-TYPE
   SYNTAX        Gauge32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object counts the number of labels that are in
        use at this point in time on this interface in the
        incoming direction. If the interface participates in
        only the per-platform label space, then the value of
        the instance of this object MUST be identical to
        the value of the instance with index 0. If the
        interface participates in the per-interface label
        space, then the instance of this object MUST
        represent the number of per-interface labels that
        are in use on this interface."
   ::= { mplsInterfacePerfEntry 1 }

mplsInterfacePerfInLabelLookupFailures  OBJECT-TYPE
   SYNTAX        Counter32



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   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object counts the number of labeled packets
        that have been received on this interface and which
        were discarded because there was no matching cross-
        connect entry. This object MUST count on a per-
        interface basis regardless of which label space the
        interface participates in."
   ::= { mplsInterfacePerfEntry 2 }

mplsInterfacePerfOutLabelsInUse OBJECT-TYPE
   SYNTAX        Gauge32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object counts the number of top-most labels in
        the outgoing label stacks that are in use at this
        point in time on this interface. This object MUST
        count on a per-interface basis regardless of which
        label space the interface participates in."
   ::= { mplsInterfacePerfEntry 3 }

mplsInterfacePerfOutFragmentedPkts OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object counts the number of outgoing MPLS
        packets that required fragmentation before
        transmission on this interface. This object MUST
        count on a per-interface basis regardless of which
        label space the interface participates in."
::= { mplsInterfacePerfEntry 4 }

-- mplsInterfacePerf Table end.

mplsInSegmentIndexNext OBJECT-TYPE
   SYNTAX        MplsIndexNextType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object contains the next available value to
        be used for mplsInSegmentIndex when creating entries
        in the mplsInSegmentTable. The special value of a
        string containing the single octet 0x00 indicates
        that no new entries can be created in this table.
        Agents not allowing managers to create entries



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        in this table MUST set this object to this special
        value."
      ::= { mplsLsrObjects 3 }

-- in-segment table.
mplsInSegmentTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsInSegmentEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table contains a description of the incoming MPLS
        segments (labels) to an LSR and their associated parameters.
        The index for this table is mplsInSegmentIndex.
        The index structure of this table is specifically designed
        to handle many different MPLS implementations that manage
        their labels both in a distributed and centralized manner.
        The table is also designed to handle existing MPLS labels
        as defined in <a href="./rfc3031">RFC3031</a> as well as longer ones that may
        be necessary in the future.

        In cases where the label cannot fit into the
        mplsInSegmentLabel object, the mplsInSegmentLabelPtr
        will indicate this by being set to the first accessible
        column in the appropriate extension table's row.
        In this case an additional table MUST
        be provided and MUST be indexed by at least the indexes
        used by this table. In all other cases when the label is
        represented within the mplsInSegmentLabel object, the
        mplsInSegmentLabelPtr MUST be set to 0.0. Due to the
        fact that MPLS labels may not exceed 24 bits, the
        mplsInSegmentLabelPtr object is only a provision for
        future-proofing the MIB module. Thus, the definition
        of any extension tables is beyond the scope of this
        MIB module."
      ::= { mplsLsrObjects 4 }

mplsInSegmentEntry  OBJECT-TYPE
   SYNTAX        MplsInSegmentEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table represents one incoming
        segment as is represented in an LSR's LFIB.
        An entry can be created by a network
        administrator or an SNMP agent, or an MPLS signaling
        protocol.  The creator of the entry is denoted by
        mplsInSegmentOwner.




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        The value of mplsInSegmentRowStatus cannot be active(1)
        unless the ifTable entry corresponding to
        mplsInSegmentInterface exists.  An entry in this table
        must match any incoming packets, and indicates an
        instance of mplsXCEntry based on which forwarding
        and/or switching actions are taken."
   INDEX { mplsInSegmentIndex }
   ::= { mplsInSegmentTable 1 }

MplsInSegmentEntry ::= SEQUENCE {
  mplsInSegmentIndex                MplsIndexType,
  mplsInSegmentInterface            InterfaceIndexOrZero,
  mplsInSegmentLabel                MplsLabel,
  mplsInSegmentLabelPtr             RowPointer,
  mplsInSegmentNPop                 Integer32,
  mplsInSegmentAddrFamily           AddressFamilyNumbers,
  mplsInSegmentXCIndex              MplsIndexType,
  mplsInSegmentOwner                MplsOwner ,
  mplsInSegmentTrafficParamPtr      RowPointer,
  mplsInSegmentRowStatus            RowStatus,
  mplsInSegmentStorageType          StorageType
}

mplsInSegmentIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "The index for this in-segment. The
        string containing the single octet 0x00
        MUST not be used as an index."
   ::= { mplsInSegmentEntry 1 }

mplsInSegmentInterface OBJECT-TYPE
   SYNTAX        InterfaceIndexOrZero
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This object represents the
        interface index for the incoming MPLS interface.  A
        value of zero represents all interfaces participating in
        the per-platform label space.  This may only be used
        in cases where the incoming interface and label
        are associated with the same mplsXCEntry. Specifically,
        given a label and any incoming interface pair from the
        per-platform label space, the outgoing label/interface
        mapping remains the same. If this is not the case,
        then individual entries MUST exist that



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        can then be mapped to unique mplsXCEntries."
   ::= { mplsInSegmentEntry 2 }

mplsInSegmentLabel OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
     "If the corresponding instance of mplsInSegmentLabelPtr is
      zeroDotZero then this object MUST contain the incoming label
      associated with this in-segment. If not this object SHOULD
      be zero and MUST be ignored."
   ::= { mplsInSegmentEntry 3 }

mplsInSegmentLabelPtr OBJECT-TYPE
   SYNTAX        RowPointer
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "If the label for this segment cannot be represented
        fully within the mplsInSegmentLabel object,
        this object MUST point to the first accessible
        column of a conceptual row in an external table containing
        the label.  In this case, the mplsInSegmentTopLabel
        object SHOULD be set to 0 and ignored. This object MUST
        be set to zeroDotZero otherwise."
   DEFVAL { zeroDotZero }
   ::= { mplsInSegmentEntry 4 }

mplsInSegmentNPop OBJECT-TYPE
   SYNTAX        Integer32 (1..2147483647)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The number of labels to pop from the incoming
        packet.  Normally only the top label is popped from
        the packet and used for all switching decisions for
        that packet.  This is indicated by setting this
        object to the default value of 1. If an LSR supports
        popping of more than one label, this object MUST
        be set to that number. This object cannot be modified
        if mplsInSegmentRowStatus is active(1)."
   DEFVAL        { 1 }
   ::= { mplsInSegmentEntry 5 }

mplsInSegmentAddrFamily OBJECT-TYPE
   SYNTAX        AddressFamilyNumbers
   MAX-ACCESS    read-create



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-23" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   STATUS        current
   DESCRIPTION
       "The IANA address family [IANAFamily] of packets
        received on this segment, which is used at an egress
        LSR to deliver them to the appropriate layer 3 entity.
        A value of other(0) indicates that the family type is
        either unknown or undefined; this SHOULD NOT be used
        at an egress LSR. This object cannot be
        modified if mplsInSegmentRowStatus is active(1)."
   REFERENCE
       "Internet Assigned Numbers Authority (IANA), ADDRESS
        FAMILY NUMBERS, (<a href="http://www.iana.org/assignments/address-family-numbers">http://www.iana.org/assignments/</a>
        <a href="http://www.iana.org/assignments/address-family-numbers">address-family-numbers</a>), for MIB see:
        <a href="http://www.iana.org/assignments/ianaaddressfamilynumbers-mib">http://www.iana.org/assignments/</a>
        <a href="http://www.iana.org/assignments/ianaaddressfamilynumbers-mib">ianaaddressfamilynumbers-mib</a>
"
   DEFVAL        { other }
   ::= { mplsInSegmentEntry 6 }

mplsInSegmentXCIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Index into mplsXCTable which identifies which cross-
        connect entry this segment is part of.  The string
        containing the single octet 0x00 indicates that this
        entry is not referred to by any cross-connect entry.
        When a cross-connect entry is created which this
        in-segment is a part of, this object is automatically
        updated to reflect the value of mplsXCIndex of that
        cross-connect entry."
   ::= { mplsInSegmentEntry 7 }

mplsInSegmentOwner OBJECT-TYPE
   SYNTAX        MplsOwner
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Denotes the entity that created and is responsible
        for managing this segment."
   ::= { mplsInSegmentEntry 8 }

mplsInSegmentTrafficParamPtr OBJECT-TYPE
   SYNTAX            RowPointer
   MAX-ACCESS        read-create
   STATUS            current
   DESCRIPTION



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-24" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


     "This variable represents a pointer to the traffic
      parameter specification for this in-segment.  This
      value may point at an entry in the
      mplsTunnelResourceTable in the MPLS-TE-STD-MIB (<a href="./rfc3812">RFC3812</a>)
      to indicate which traffic parameter settings for this
      segment if it represents an LSP used for a TE tunnel.

      This value may optionally point at an
      externally defined traffic parameter specification
      table.  A value of zeroDotZero indicates best-effort
      treatment.  By having the same value of this object,
      two or more segments can indicate resource sharing
      of such things as LSP queue space, etc.

      This object cannot be modified if mplsInSegmentRowStatus
      is active(1).  For entries in this table that
      are preserved after a re-boot, the agent MUST ensure
      that their integrity be preserved, or this object should
      be set to 0.0 if it cannot."
   DEFVAL { zeroDotZero }
   ::= { mplsInSegmentEntry 9 }

mplsInSegmentRowStatus OBJECT-TYPE
   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable is used to create, modify, and/or
        delete a row in this table. When a row in this
        table has a row in the active(1) state, no
        objects in this row can be modified except the
        mplsInSegmentRowStatus and mplsInSegmentStorageType."
   ::= { mplsInSegmentEntry 10 }

mplsInSegmentStorageType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable indicates the storage type for this
        object. The agent MUST ensure that this object's
        value remains consistent with the associated
        mplsXCEntry. Conceptual rows having the value
        'permanent' need not allow write-access to any
        columnar objects in the row."
   REFERENCE
        "See <a href="./rfc2579">RFC2579</a>."
   DEFVAL { volatile }



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-25" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   ::= { mplsInSegmentEntry 11 }

-- End of mplsInSegmentTable

-- in-segment performance table.

mplsInSegmentPerfTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsInSegmentPerfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table contains statistical information for
        incoming MPLS segments to an LSR."
   ::= { mplsLsrObjects 5 }

mplsInSegmentPerfEntry  OBJECT-TYPE
   SYNTAX        MplsInSegmentPerfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table contains statistical
        information about one incoming segment which is
        configured in the mplsInSegmentTable. The counters
        in this entry should behave in a manner similar to
        that of the interface.
        mplsInSegmentPerfDiscontinuityTime indicates the
        time of the last discontinuity in all of these
        objects."
   AUGMENTS  { mplsInSegmentEntry }
   ::= { mplsInSegmentPerfTable 1 }

MplsInSegmentPerfEntry ::= SEQUENCE {
    mplsInSegmentPerfOctets             Counter32,
    mplsInSegmentPerfPackets            Counter32,
    mplsInSegmentPerfErrors             Counter32,
    mplsInSegmentPerfDiscards           Counter32,

    -- high capacity counter
    mplsInSegmentPerfHCOctets           Counter64,

    mplsInSegmentPerfDiscontinuityTime  TimeStamp
   }

mplsInSegmentPerfOctets OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-26" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


       "This value represents the total number of octets
        received by this segment. It MUST be equal to the
        least significant 32 bits of
        mplsInSegmentPerfHCOctets
        if mplsInSegmentPerfHCOctets is supported according to
        the rules spelled out in <a href="./rfc2863">RFC2863</a>."
   ::= { mplsInSegmentPerfEntry 1 }

mplsInSegmentPerfPackets OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Total number of packets received by this segment."
   ::= { mplsInSegmentPerfEntry 2 }

mplsInSegmentPerfErrors OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The number of errored packets received on this
        segment."
   ::= { mplsInSegmentPerfEntry 3 }

mplsInSegmentPerfDiscards OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The number of labeled packets received on this in-
        segment, which were chosen to be discarded even
        though no errors had been detected to prevent their
        being transmitted.  One possible reason for
        discarding such a labeled packet could be to free up
        buffer space."
   ::= { mplsInSegmentPerfEntry 4 }

mplsInSegmentPerfHCOctets OBJECT-TYPE
   SYNTAX        Counter64
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The total number of octets received.  This is the 64
        bit version of mplsInSegmentPerfOctets,
        if mplsInSegmentPerfHCOctets is supported according to
        the rules spelled out in <a href="./rfc2863">RFC2863</a>."
   ::= { mplsInSegmentPerfEntry 5 }



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 26]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-27" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>



mplsInSegmentPerfDiscontinuityTime OBJECT-TYPE
   SYNTAX      TimeStamp
   MAX-ACCESS  read-only
   STATUS      current
   DESCRIPTION
       "The value of sysUpTime on the most recent occasion
        at which any one or more of this segment's Counter32
        or Counter64 suffered a discontinuity. If no such
        discontinuities have occurred since the last re-
        initialization of the local management subsystem,
        then this object contains a zero value."
   ::= { mplsInSegmentPerfEntry 6 }

-- End of mplsInSegmentPerfTable.

-- out-segment table.

mplsOutSegmentIndexNext OBJECT-TYPE
   SYNTAX        MplsIndexNextType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object contains the next available value to
        be used for mplsOutSegmentIndex when creating entries
        in the mplsOutSegmentTable. The special value of a
        string containing the single octet 0x00
        indicates that no new entries can be created in this
        table. Agents not allowing managers to create entries
        in this table MUST set this object to this special
        value."
   ::= { mplsLsrObjects 6 }

mplsOutSegmentTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsOutSegmentEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table contains a representation of the outgoing
        segments from an LSR."
   ::= { mplsLsrObjects 7 }

mplsOutSegmentEntry  OBJECT-TYPE
   SYNTAX        MplsOutSegmentEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table represents one outgoing



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-28" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        segment.  An entry can be created by a network
        administrator, an SNMP agent, or an MPLS signaling
        protocol.  The object mplsOutSegmentOwner indicates
        the creator of this entry. The value of
        mplsOutSegmentRowStatus cannot be active(1) unless
        the ifTable entry corresponding to
        mplsOutSegmentInterface exists.

        Note that the indexing of this table uses a single,
        arbitrary index (mplsOutSegmentIndex) to indicate
        which out-segment (i.e.: label) is being switched to
        from which in-segment (i.e: label) or in-segments.
        This is necessary because it is possible to have an
        equal-cost multi-path situation where two identical
        out-going labels are assigned to the same
        cross-connect (i.e.: they go to two different neighboring
        LSRs); thus, requiring two out-segments. In order to
        preserve the uniqueness of the references
        by the mplsXCEntry, an arbitrary integer must be used as
        the index for this table."
   INDEX { mplsOutSegmentIndex }
   ::= { mplsOutSegmentTable 1 }

MplsOutSegmentEntry ::= SEQUENCE {
  mplsOutSegmentIndex                MplsIndexType,
  mplsOutSegmentInterface            InterfaceIndexOrZero,
  mplsOutSegmentPushTopLabel         TruthValue,
  mplsOutSegmentTopLabel             MplsLabel,
  mplsOutSegmentTopLabelPtr          RowPointer,
  mplsOutSegmentNextHopAddrType      InetAddressType,
  mplsOutSegmentNextHopAddr          InetAddress,
  mplsOutSegmentXCIndex              MplsIndexType,
  mplsOutSegmentOwner                MplsOwner,
  mplsOutSegmentTrafficParamPtr      RowPointer,
  mplsOutSegmentRowStatus            RowStatus,
  mplsOutSegmentStorageType          StorageType
}

mplsOutSegmentIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This value contains a unique index for this row.
        While a value of a string containing the single
        octet 0x00 is not valid as an index for entries
        in this table, it can be supplied as a valid value
        to index the mplsXCTable to represent entries for



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 28]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-29" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        which no out-segment has been configured or
        exists."
   ::= { mplsOutSegmentEntry 1 }

mplsOutSegmentInterface OBJECT-TYPE
   SYNTAX        InterfaceIndexOrZero
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This value must contain the interface index of the
        outgoing interface. This object cannot be modified
        if mplsOutSegmentRowStatus is active(1). The
        mplsOutSegmentRowStatus cannot be set to active(1)
        until this object is set to a value corresponding to
        a valid ifEntry."
   ::= { mplsOutSegmentEntry 2 }

mplsOutSegmentPushTopLabel OBJECT-TYPE
   SYNTAX        TruthValue
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This value indicates whether or not a top label
        should be pushed onto the outgoing packet's label
        stack.  The value of this variable MUST be set to
        true(1) if the outgoing interface does not support
        pop-and-go (and no label stack remains). For example,
        on ATM interface, or if the segment represents a
        tunnel origination.  Note that it is considered
        an error in the case that mplsOutSegmentPushTopLabel
        is set to false, but the cross-connect entry which
        refers to this out-segment has a non-zero
        mplsLabelStackIndex.  The LSR MUST ensure that this
        situation does not happen. This object cannot be
        modified if mplsOutSegmentRowStatus is active(1)."
   DEFVAL { true }
   ::= { mplsOutSegmentEntry 3 }

mplsOutSegmentTopLabel OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "If mplsOutSegmentPushTopLabel is true then this
        represents the label that should be pushed onto the
        top of the outgoing packet's label stack. Otherwise
        this value SHOULD be set to 0 by the management
        station and MUST be ignored by the agent. This



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 29]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-30" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        object cannot be modified if mplsOutSegmentRowStatus
        is active(1)."
   DEFVAL { 0 }
   ::= { mplsOutSegmentEntry 4 }

mplsOutSegmentTopLabelPtr OBJECT-TYPE
   SYNTAX        RowPointer
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "If the label for this segment cannot be represented
        fully within the mplsOutSegmentLabel object,
        this object MUST point to the first accessible
        column of a conceptual row in an external table containing
        the label.  In this case, the mplsOutSegmentTopLabel
        object SHOULD be set to 0 and ignored. This object
        MUST be set to zeroDotZero otherwise."
   DEFVAL { zeroDotZero }
   ::= { mplsOutSegmentEntry 5 }

mplsOutSegmentNextHopAddrType OBJECT-TYPE
   SYNTAX        InetAddressType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "Indicates the next hop Internet address type.
        Only values unknown(0), ipv4(1) or ipv6(2)
        have to be supported.

        A value of unknown(0) is allowed only when
        the outgoing interface is of type point-to-point.
        If any other unsupported values are attempted in a set
        operation, the agent MUST return an inconsistentValue
        error."
   REFERENCE
       "See <a href="./rfc3291">RFC3291</a>."
   ::= { mplsOutSegmentEntry 6 }

mplsOutSegmentNextHopAddr OBJECT-TYPE
   SYNTAX        InetAddress
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The internet address of the next hop. The type of
        this address is determined by the value of the
        mplslOutSegmentNextHopAddrType object.

        This object cannot be modified if



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 30]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-31" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        mplsOutSegmentRowStatus is active(1)."
   ::= { mplsOutSegmentEntry 7 }

mplsOutSegmentXCIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Index into mplsXCTable which identifies which cross-
        connect entry this segment is part of.  A value of
        the string containing the single octet 0x00
        indicates that this entry is not referred
        to by any cross-connect entry.  When a cross-connect
        entry is created which this out-segment is a part of,
        this object MUST be updated by the agent to reflect
        the value of mplsXCIndex of that cross-connect
        entry."
   ::= { mplsOutSegmentEntry 8 }

mplsOutSegmentOwner OBJECT-TYPE
   SYNTAX        MplsOwner
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Denotes the entity which created and is responsible
        for managing this segment."
   ::= { mplsOutSegmentEntry 9 }

mplsOutSegmentTrafficParamPtr OBJECT-TYPE
   SYNTAX        RowPointer
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
     "This variable represents a pointer to the traffic
      parameter specification for this out-segment.  This
      value may point at an entry in the
      MplsTunnelResourceEntry in the MPLS-TE-STD-MIB (<a href="./rfc3812">RFC3812</a>)

      RFC Editor: Please fill in RFC number.

      to indicate which traffic parameter settings for this
      segment if it represents an LSP used for a TE tunnel.

      This value may optionally point at an
      externally defined traffic parameter specification
      table.  A value of zeroDotZero indicates best-effort
      treatment.  By having the same value of this object,
      two or more segments can indicate resource sharing



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 31]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-32" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


      of such things as LSP queue space, etc.

      This object cannot be modified if
      mplsOutSegmentRowStatus is active(1).
      For entries in this table that
      are preserved after a re-boot, the agent MUST ensure
      that their integrity be preserved, or this object should
      be set to 0.0 if it cannot."
   DEFVAL { zeroDotZero }
   ::= { mplsOutSegmentEntry 10 }

mplsOutSegmentRowStatus OBJECT-TYPE
   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "For creating, modifying, and deleting this row.
        When a row in this table has a row in the active(1)
        state, no objects in this row can be modified
        except the mplsOutSegmentRowStatus or
        mplsOutSegmentStorageType."
   ::= { mplsOutSegmentEntry 11 }

mplsOutSegmentStorageType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable indicates the storage type for this
        object. The agent MUST ensure that this object's value
        remains consistent with the associated mplsXCEntry.
        Conceptual rows having the value 'permanent'
        need not allow write-access to any columnar
        objects in the row."
   DEFVAL { volatile }
   ::= { mplsOutSegmentEntry 12 }

-- End of mplsOutSegmentTable


-- out-segment performance table.

mplsOutSegmentPerfTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsOutSegmentPerfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table contains statistical information about



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 32]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-33" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        outgoing segments from an LSR. The counters in this
        entry should behave in a manner similar to that of
        the interface."
   ::= { mplsLsrObjects 8 }

mplsOutSegmentPerfEntry  OBJECT-TYPE
   SYNTAX        MplsOutSegmentPerfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table contains statistical
        information about one outgoing segment configured in
        mplsOutSegmentTable. The object
        mplsOutSegmentPerfDiscontinuityTime indicates the
        time of the last discontinuity in these objects. "
   AUGMENTS      { mplsOutSegmentEntry }
      ::= { mplsOutSegmentPerfTable 1 }

MplsOutSegmentPerfEntry ::= SEQUENCE {
      mplsOutSegmentPerfOctets             Counter32,
      mplsOutSegmentPerfPackets            Counter32,
      mplsOutSegmentPerfErrors             Counter32,
      mplsOutSegmentPerfDiscards           Counter32,

      -- HC counter
      mplsOutSegmentPerfHCOctets           Counter64,

      mplsOutSegmentPerfDiscontinuityTime  TimeStamp
   }

mplsOutSegmentPerfOctets OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This value contains the total number of octets sent
        on this segment. It MUST be equal to the least
        significant 32 bits of mplsOutSegmentPerfHCOctets
        if mplsOutSegmentPerfHCOctets is supported according to
        the rules spelled out in <a href="./rfc2863">RFC2863</a>."
   ::= { mplsOutSegmentPerfEntry 1 }

mplsOutSegmentPerfPackets OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This value contains the total number of packets sent



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-34" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        on this segment."
   ::= { mplsOutSegmentPerfEntry 2 }

mplsOutSegmentPerfErrors OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Number of packets that could not be sent due to
        errors on this segment."
   ::= { mplsOutSegmentPerfEntry 3 }

mplsOutSegmentPerfDiscards OBJECT-TYPE
   SYNTAX        Counter32
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The number of labeled packets attempted to be transmitted
        on this out-segment, which were chosen to be discarded
        even though no errors had been detected to prevent their
        being transmitted. One possible reason for
        discarding such a labeled packet could be to free up
        buffer space."
   ::= { mplsOutSegmentPerfEntry 4 }

mplsOutSegmentPerfHCOctets OBJECT-TYPE
   SYNTAX        Counter64
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Total number of octets sent.  This is the 64 bit
        version of mplsOutSegmentPerfOctets,
        if mplsOutSegmentPerfHCOctets is supported according to
        the rules spelled out in <a href="./rfc2863">RFC2863</a>."
   ::= { mplsOutSegmentPerfEntry 5 }

mplsOutSegmentPerfDiscontinuityTime OBJECT-TYPE
   SYNTAX      TimeStamp
   MAX-ACCESS  read-only
   STATUS      current
   DESCRIPTION
       "The value of sysUpTime on the most recent occasion
        at which any one or more of this segment's Counter32
        or Counter64 suffered a discontinuity. If no such
        discontinuities have occurred since the last re-
        initialization of the local management subsystem,
        then this object contains a zero value."
   ::= { mplsOutSegmentPerfEntry 6 }



<span class="grey">Srinivasan, et al.          Standards Track                    [Page 34]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-35" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>



-- End of mplsOutSegmentPerfTable.


-- Cross-connect table.

mplsXCIndexNext OBJECT-TYPE
   SYNTAX        MplsIndexNextType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object contains the next available value to
        be used for mplsXCIndex when creating entries in
        the mplsXCTable. A special value of the zero length
        string indicates that no more new entries can be created
        in the relevant table.  Agents not allowing managers
        to create entries in this table MUST set this value
        to the zero length string."
   ::= { mplsLsrObjects 9 }

mplsXCTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsXCEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies information for switching
        between LSP segments.  It supports point-to-point,
        point-to-multipoint and multipoint-to-point
        connections.  mplsLabelStackTable specifies the
        label stack information for a cross-connect LSR and
        is referred to from mplsXCTable."
   ::= { mplsLsrObjects 10 }

mplsXCEntry  OBJECT-TYPE
   SYNTAX        MplsXCEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "A row in this table represents one cross-connect
        entry.  It is indexed by the following objects:

        - cross-connect index mplsXCIndex that uniquely
          identifies a group of cross-connect entries

        - in-segment index, mplsXCInSegmentIndex

        - out-segment index, mplsXCOutSegmentIndex




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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


       LSPs originating at this LSR:
        These are represented by using the special
        of value of mplsXCInSegmentIndex set to the
        string containing a single octet 0x00. In
        this case the mplsXCOutSegmentIndex
        MUST not be the string containing a single
        octet 0x00.

       LSPs terminating at this LSR:
        These are represented by using the special value
        mplsXCOutSegmentIndex set to the string containing
        a single octet 0x00.

       Special labels:
        Entries indexed by the strings containing the
        reserved MPLS label values as a single octet 0x00
        through 0x0f (inclusive) imply LSPs terminating at
        this LSR.  Note that situations where LSPs are
        terminated with incoming label equal to the string
        containing a single octet 0x00 can be distinguished
        from LSPs originating at this LSR because the
        mplsXCOutSegmentIndex equals the string containing the
        single octet 0x00.

        An entry can be created by a network administrator
        or by an SNMP agent as instructed by an MPLS
        signaling protocol."
   INDEX { mplsXCIndex, mplsXCInSegmentIndex,
           mplsXCOutSegmentIndex }
   ::= { mplsXCTable 1 }

MplsXCEntry ::= SEQUENCE {
      mplsXCIndex                  MplsIndexType,
      mplsXCInSegmentIndex         MplsIndexType,
      mplsXCOutSegmentIndex        MplsIndexType,
      mplsXCLspId                  MplsLSPID,
      mplsXCLabelStackIndex        MplsIndexType,
      mplsXCOwner                  MplsOwner ,
      mplsXCRowStatus              RowStatus,
      mplsXCStorageType            StorageType,
      mplsXCAdminStatus            INTEGER,
      mplsXCOperStatus             INTEGER
   }

mplsXCIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    not-accessible
   STATUS        current



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   DESCRIPTION
       "Primary index for the conceptual row identifying a
        group of cross-connect segments. The string
        containing a single octet 0x00 is an invalid index."
   ::= { mplsXCEntry 1 }

mplsXCInSegmentIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "Incoming label index.
        If this object is set to the string containing
        a single octet 0x00, this indicates a special
        case outlined in the table's description above.
        In this case no corresponding mplsInSegmentEntry
        shall exist."
   ::= { mplsXCEntry 2 }

mplsXCOutSegmentIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "Index of out-segment for LSPs not terminating on
        this LSR if not set to the string containing the
        single octet 0x00. If the segment identified by this
        entry is terminating, then this object MUST be set to
        the string containing a single octet 0x00 to indicate
        that no corresponding mplsOutSegmentEntry shall
        exist."
   ::= { mplsXCEntry 3 }

mplsXCLspId OBJECT-TYPE
   SYNTAX        MplsLSPID
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This value identifies the label switched path that
        this cross-connect entry belongs to. This object
        cannot be modified if mplsXCRowStatus is active(1)
        except for this object."
   ::= { mplsXCEntry 4 }

mplsXCLabelStackIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    read-create
   STATUS        current



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   DESCRIPTION
       "Primary index into mplsLabelStackTable identifying a
        stack of labels to be pushed beneath the top label.
        Note that the top label identified by the out-
        segment ensures that all the components of a
        multipoint-to-point connection have the same
        outgoing label. A value of the string containing the
        single octet 0x00 indicates that no labels are to
        be stacked beneath the top label.
        This object cannot be modified if mplsXCRowStatus is
        active(1)."
   ::= { mplsXCEntry 5 }

mplsXCOwner OBJECT-TYPE
   SYNTAX    MplsOwner
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "Denotes the entity that created and is responsible
        for managing this cross-connect."
   ::= { mplsXCEntry 6 }

mplsXCRowStatus OBJECT-TYPE
   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "For creating, modifying, and deleting this row.
        When a row in this table has a row in the active(1)
        state, no objects in this row except this object
        and the mplsXCStorageType can be modified. "
   ::= { mplsXCEntry 7 }

mplsXCStorageType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable indicates the storage type for this
        object. The agent MUST ensure that the associated in
        and out segments also have the same StorageType value
        and are restored consistently upon system restart.
        This value SHOULD be set to permanent(4) if created
        as a result of a static LSP configuration.

        Conceptual rows having the value 'permanent'
        need not allow write-access to any columnar
        objects in the row."



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   DEFVAL { volatile }
   ::= { mplsXCEntry 8 }

mplsXCAdminStatus OBJECT-TYPE
   SYNTAX   INTEGER {
              up(1),     -- ready to pass packets
              down(2),
              testing(3) -- in some test mode
      }
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The desired operational status of this segment."
   DEFVAL { up }
   ::= { mplsXCEntry 9 }

mplsXCOperStatus OBJECT-TYPE
   SYNTAX   INTEGER {
             up(1),            -- ready to pass packets
             down(2),
             testing(3),       -- in some test mode
             unknown(4),       -- status cannot be determined
                               -- for some reason.
             dormant(5),
             notPresent(6),    -- some component is missing
             lowerLayerDown(7) -- down due to the state of
                               -- lower layer interfaces
      }
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The actual operational status of this cross-
        connect."
   ::= { mplsXCEntry 10 }

-- End of mplsXCTable


-- Label stack table.

mplsMaxLabelStackDepth  OBJECT-TYPE
   SYNTAX        Unsigned32 (1..2147483647)
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The maximum stack depth supported by this LSR."
::= { mplsLsrObjects 11 }




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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


mplsLabelStackIndexNext  OBJECT-TYPE
   SYNTAX        MplsIndexNextType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "This object contains the next available value to
        be used for mplsLabelStackIndex when creating entries
        in the mplsLabelStackTable. The special string
        containing the single octet 0x00
        indicates that no more new entries can be created
        in the relevant table.  Agents not allowing managers
        to create entries in this table MUST set this value
        to the string containing the single octet 0x00."
::= { mplsLsrObjects 12 }

mplsLabelStackTable OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsLabelStackEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies the label stack to be pushed
        onto a packet, beneath the top label.  Entries into
        this table are referred to from mplsXCTable."
   ::= { mplsLsrObjects 13 }

mplsLabelStackEntry OBJECT-TYPE
   SYNTAX        MplsLabelStackEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table represents one label which is
        to be pushed onto an outgoing packet, beneath the
        top label.  An entry can be created by a network
        administrator or by an SNMP agent as instructed by
        an MPLS signaling protocol."
   INDEX { mplsLabelStackIndex, mplsLabelStackLabelIndex }
   ::= { mplsLabelStackTable 1 }

MplsLabelStackEntry ::= SEQUENCE {
      mplsLabelStackIndex             MplsIndexType,
      mplsLabelStackLabelIndex        Unsigned32,
      mplsLabelStackLabel             MplsLabel,
      mplsLabelStackLabelPtr          RowPointer,
      mplsLabelStackRowStatus         RowStatus,
      mplsLabelStackStorageType       StorageType
   }

mplsLabelStackIndex OBJECT-TYPE



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   SYNTAX        MplsIndexType
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "Primary index for this row identifying a stack of
        labels to be pushed on an outgoing packet, beneath
        the top label. An index containing the string with
        a single octet 0x00 MUST not be used."
   ::= { mplsLabelStackEntry 1 }

mplsLabelStackLabelIndex OBJECT-TYPE
   SYNTAX        Unsigned32 (1..2147483647)
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "Secondary index for this row identifying one label
        of the stack.  Note that an entry with a smaller
        mplsLabelStackLabelIndex would refer to a label
        higher up the label stack and would be popped at a
        downstream LSR before a label represented by a
        higher mplsLabelStackLabelIndex at a downstream
        LSR."
   ::= { mplsLabelStackEntry 2 }

mplsLabelStackLabel OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The label to pushed."
   ::= { mplsLabelStackEntry 3 }

mplsLabelStackLabelPtr OBJECT-TYPE
   SYNTAX        RowPointer
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "If the label for this segment cannot be represented
        fully within the mplsLabelStackLabel object,
        this object MUST point to the first accessible
        column of a conceptual row in an external table containing
        the label.  In this case, the mplsLabelStackLabel
        object SHOULD be set to 0 and ignored. This object
        MUST be set to zeroDotZero otherwise."
   DEFVAL { zeroDotZero }
   ::= { mplsLabelStackEntry 4 }

mplsLabelStackRowStatus OBJECT-TYPE



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "For creating, modifying, and deleting this row.
        When a row in this table has a row in the active(1)
        state, no objects in this row except this object
        and the mplsLabelStackStorageType can be modified."
   ::= { mplsLabelStackEntry 5 }

mplsLabelStackStorageType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable indicates the storage type for this
        object. This object cannot be modified if
        mplsLabelStackRowStatus is active(1).
        No objects are required to be writable for
        rows in this table with this object set to
        permanent(4).

        The agent MUST ensure that all related entries
        in this table retain the same value for this
        object.  Agents MUST ensure that the storage type
        for all entries related to a particular mplsXCEntry
        retain the same value for this object as the
        mplsXCEntry's StorageType."
   DEFVAL { volatile }
   ::= { mplsLabelStackEntry 6 }

-- End of mplsLabelStackTable

-- Begin mplsInSegmentMapTable

mplsInSegmentMapTable OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsInSegmentMapEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies the mapping from the
        mplsInSegmentIndex to the corresponding
        mplsInSegmentInterface and mplsInSegmentLabel
        objects. The purpose of this table is to
        provide the manager with an alternative
        means by which to locate in-segments."
   ::= { mplsLsrObjects 14 }




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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


mplsInSegmentMapEntry OBJECT-TYPE
   SYNTAX        MplsInSegmentMapEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table represents one interface
        and incoming label pair.

        In cases where the label cannot fit into the
        mplsInSegmentLabel object, the mplsInSegmentLabelPtr
        will indicate this by being set to the first accessible
        column in the appropriate extension table's row,
        and the mplsInSegmentLabel SHOULD be set to 0.
        In all other cases when the label is
        represented within the mplsInSegmentLabel object, the
        mplsInSegmentLabelPtr MUST be 0.0.

        Implementors need to be aware that if the value of
        the mplsInSegmentMapLabelPtrIndex (an OID) has more
        that 111 sub-identifiers, then OIDs of column
        instances in this table will have more than 128
        sub-identifiers and cannot be accessed using SNMPv1,
        SNMPv2c, or SNMPv3."
   INDEX { mplsInSegmentMapInterface,
           mplsInSegmentMapLabel,
           mplsInSegmentMapLabelPtrIndex }
   ::= { mplsInSegmentMapTable 1 }

MplsInSegmentMapEntry ::= SEQUENCE {
      mplsInSegmentMapInterface      InterfaceIndexOrZero,
      mplsInSegmentMapLabel          MplsLabel,
      mplsInSegmentMapLabelPtrIndex  RowPointer,
      mplsInSegmentMapIndex          MplsIndexType
   }

mplsInSegmentMapInterface OBJECT-TYPE
   SYNTAX        InterfaceIndexOrZero
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This index contains the same value as the
        mplsInSegmentIndex in the mplsInSegmentTable."
   ::= { mplsInSegmentMapEntry 1 }

mplsInSegmentMapLabel OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    not-accessible
   STATUS        current



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   DESCRIPTION
       "This index contains the same value as the
        mplsInSegmentLabel in the mplsInSegmentTable."
   ::= { mplsInSegmentMapEntry 2 }

mplsInSegmentMapLabelPtrIndex OBJECT-TYPE
   SYNTAX        RowPointer
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This index contains the same value as the
        mplsInSegmentLabelPtr.

        If the label for the InSegment cannot be represented
        fully within the mplsInSegmentLabel object,
        this index MUST point to the first accessible
        column of a conceptual row in an external table containing
        the label.  In this case, the mplsInSegmentTopLabel
        object SHOULD be set to 0 and ignored. This object MUST
        be set to zeroDotZero otherwise."
   ::= { mplsInSegmentMapEntry 3 }

mplsInSegmentMapIndex OBJECT-TYPE
   SYNTAX        MplsIndexType
   MAX-ACCESS    read-only
   STATUS        current
   DESCRIPTION
       "The mplsInSegmentIndex that corresponds
        to the mplsInSegmentInterface and
        mplsInSegmentLabel, or the mplsInSegmentInterface
        and mplsInSegmentLabelPtr, if applicable.
        The string containing the single octet 0x00
        MUST not be returned."
   ::= { mplsInSegmentMapEntry 4 }

-- End mplsInSegmentMapTable


-- Notification Configuration

mplsXCNotificationsEnable OBJECT-TYPE
   SYNTAX        TruthValue
   MAX-ACCESS    read-write
   STATUS        current
   DESCRIPTION
       "If this object is set to true(1), then it enables
        the emission of mplsXCUp and mplsXCDown
        notifications; otherwise these notifications are not



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        emitted."
   REFERENCE
       "See also <a href="./rfc3413">RFC3413</a> for explanation that
        notifications are under the ultimate control of the
        MIB module in this document."
   DEFVAL { false }
   ::= { mplsLsrObjects 15 }

-- Cross-connect.

mplsXCUp NOTIFICATION-TYPE
   OBJECTS     { mplsXCOperStatus,  -- start of range
                 mplsXCOperStatus   -- end of range
   }
   STATUS      current
   DESCRIPTION
       "This notification is generated when the
        mplsXCOperStatus object for one or more contiguous
        entries in mplsXCTable are about to enter the up(1)
        state from some other state. The included values of
        mplsXCOperStatus MUST both be set equal to this
        new state (i.e: up(1)).  The two instances of
        mplsXCOperStatus in this notification indicate the range
        of indexes that are affected.  Note that all the indexes
        of the two ends of the range can be derived from the
        instance identifiers of these two objects.  For
        cases where a contiguous range of cross-connects
        have transitioned into the up(1) state at roughly
        the same time, the device SHOULD issue a single
        notification for each range of contiguous indexes in
        an effort to minimize the emission of a large number
        of notifications.  If a notification has to be
        issued for just a single cross-connect entry, then
        the instance identifier (and values) of the two
        mplsXCOperStatus objects MUST be the identical."
   ::= { mplsLsrNotifications 1 }

mplsXCDown NOTIFICATION-TYPE
   OBJECTS     {
      mplsXCOperStatus,  -- start of range
      mplsXCOperStatus   -- end of range
   }
   STATUS      current
   DESCRIPTION
       "This notification is generated when the
        mplsXCOperStatus object for one or more contiguous
        entries in mplsXCTable are about to enter the
        down(2) state from some other state. The included values



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


        of mplsXCOperStatus MUST both be set equal to this
        down(2) state.  The two instances of mplsXCOperStatus
        in this notification indicate the range of indexes
        that are affected.  Note that all the indexes of the
        two ends of the range can be derived from the
        instance identifiers of these two objects.  For
        cases where a contiguous range of cross-connects
        have transitioned into the down(2) state at roughly
        the same time, the device SHOULD issue a single
        notification for each range of contiguous indexes in
        an effort to minimize the emission of a large number
        of notifications.  If a notification has to be
        issued for just a single cross-connect entry, then
        the instance identifier (and values) of the two
        mplsXCOperStatus objects MUST be identical."
   ::= { mplsLsrNotifications 2 }

-- End of notifications.


-- Module compliance.

mplsLsrGroups
   OBJECT IDENTIFIER ::= { mplsLsrConformance 1 }

mplsLsrCompliances
   OBJECT IDENTIFIER ::= { mplsLsrConformance 2 }

-- Compliance requirement for fully compliant implementations.

mplsLsrModuleFullCompliance MODULE-COMPLIANCE
   STATUS       current
   DESCRIPTION "Compliance statement for agents that provide full
                support for MPLS-LSR-STD-MIB. Such devices can
                then be monitored and also be configured using
                this MIB module."

   MODULE IF-MIB -- The Interfaces Group MIB, <a href="./rfc2863">RFC 2863</a>.
   MANDATORY-GROUPS {
      ifGeneralInformationGroup,
      ifCounterDiscontinuityGroup
   }

   MODULE -- This module.
   MANDATORY-GROUPS {
         mplsInterfaceGroup,
         mplsInSegmentGroup,
         mplsOutSegmentGroup,



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


         mplsXCGroup,
         mplsPerfGroup
   }

   GROUP        mplsLabelStackGroup
   DESCRIPTION "This group is only mandatory for LSRs that wish to
                support the modification of LSP label stacks.
               "

   GROUP        mplsHCInSegmentPerfGroup
   DESCRIPTION "This group is mandatory for those in-segment entries
                for which the object mplsInSegmentOutOctets wraps
                around too quickly based on the criteria specified in
                <a href="./rfc2863">RFC 2863</a> for high-capacity counters.
               "

   GROUP        mplsHCOutSegmentPerfGroup
   DESCRIPTION "This group is mandatory for those out-segment entries
                for which the object mplsOutSegmentPerfOctets wraps
                around too quickly based on the criteria specified in
                <a href="./rfc2863">RFC 2863</a> for high-capacity counters.
               "

   GROUP        mplsLsrNotificationGroup
   DESCRIPTION "This group is only mandatory for those implementations
                which can efficiently implement the notifications
                contained in this group."

   OBJECT       mplsInSegmentRowStatus
   SYNTAX       RowStatus { active(1), notInService(2) }
   WRITE-SYNTAX RowStatus { active(1), notInService(2),
                            createAndGo(4), destroy(6)
                          }
   DESCRIPTION "Support for createAndWait and notReady is
                not required."

   OBJECT       mplsOutSegmentNextHopAddrType
   SYNTAX       InetAddressType { unknown(0), ipv4(1), ipv6(2) }
   DESCRIPTION "Only unknown(0), ipv4(1) and ipv6(2) support
                is required."

   OBJECT       mplsOutSegmentNextHopAddr
   SYNTAX       InetAddress (SIZE(0|4|16))
   DESCRIPTION "An implementation is only required to support
                unknown(0), ipv4(1) and ipv6(2) sizes."

   OBJECT       mplsOutSegmentRowStatus
   SYNTAX       RowStatus { active(1), notInService(2) }



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   WRITE-SYNTAX RowStatus { active(1), notInService(2),
                            createAndGo(4), destroy(6)
                          }
   DESCRIPTION "Support for createAndWait and notReady is not
                required."

   OBJECT       mplsLabelStackRowStatus
   SYNTAX       RowStatus { active(1), notInService(2) }
   WRITE-SYNTAX RowStatus { active(1), notInService(2),
                            createAndGo(4), destroy(6)
                          }
   DESCRIPTION "Support for createAndWait and notReady is not
                required."

   OBJECT       mplsXCRowStatus
   SYNTAX       RowStatus { active(1), notInService(2) }
   WRITE-SYNTAX RowStatus { active(1), notInService(2),
                            createAndGo(4), destroy(6)
                          }
   DESCRIPTION "Support for createAndWait and notReady is not
                required."

   ::= { mplsLsrCompliances 1 }

-- Compliance requirement for read-only implementations.

mplsLsrModuleReadOnlyCompliance MODULE-COMPLIANCE
   STATUS       current
   DESCRIPTION "Compliance requirement for implementations that only
                provide read-only support for MPLS-LSR-STD-MIB. Such
                devices can then be monitored but cannot be configured
                using this MIB module.
               "

   MODULE IF-MIB -- The interfaces Group MIB, <a href="./rfc2863">RFC 2863</a>
   MANDATORY-GROUPS {
      ifGeneralInformationGroup,
      ifCounterDiscontinuityGroup
   }

   MODULE -- This module
   MANDATORY-GROUPS {
         mplsInterfaceGroup,
         mplsInSegmentGroup,
         mplsOutSegmentGroup,
         mplsXCGroup,
         mplsPerfGroup
     }



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   GROUP        mplsLabelStackGroup
   DESCRIPTION "This group is only mandatory for LSRs that wish to
                support the modification of LSP label stacks.
               "

   GROUP        mplsHCInSegmentPerfGroup
   DESCRIPTION "This group is mandatory for those in-segment entries
                for which the object mplsInSegmentOutOctets wraps
                around too quickly based on the criteria specified in
                <a href="./rfc2863">RFC 2863</a> for high-capacity counters.
               "

   GROUP        mplsHCOutSegmentPerfGroup
   DESCRIPTION "This group is mandatory for those out-segment entries
                for which the object mplsOutSegmentPerfOctets wraps
                around too quickly based on the criteria specified in
                <a href="./rfc2863">RFC 2863</a> for high-capacity counters.
               "

   GROUP        mplsLsrNotificationGroup
   DESCRIPTION "This group is only mandatory for those implementations
                which can efficiently implement the notifications
                contained in this group.
               "

   -- mplsInSegmentTable
   OBJECT       mplsInSegmentLabel
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsInSegmentLabelPtr
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsInSegmentNPop
   SYNTAX       Integer32 (1..1)
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required.  This object
                SHOULD be set to 1 if it is read-only.
               "

   OBJECT       mplsInSegmentAddrFamily
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required.  A value of other(0)
                should be supported because there may be cases where
                the agent may not know about or support any address
                types.
               "



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   OBJECT       mplsInSegmentRowStatus
   SYNTAX       RowStatus { active(1) }
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsInSegmentStorageType
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   -- mplsOutSegmentTable
   OBJECT       mplsOutSegmentInterface
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsOutSegmentPushTopLabel
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsOutSegmentTopLabel
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsOutSegmentTopLabelPtr
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsOutSegmentNextHopAddrType
   SYNTAX       InetAddressType { unknown(0), ipv4(1), ipv6(2) }
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required.  Only unknown(0),
                ipv4(1) and ipv6(2) support is required.
               "

   OBJECT       mplsOutSegmentNextHopAddr
   SYNTAX       InetAddress (SIZE(0|4|16))
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required. An implementation is
                only required to support unknown(0), ipv4(1) and
                ipv6(2) sizes."

   OBJECT       mplsOutSegmentRowStatus
   SYNTAX       RowStatus { active(1) }
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsOutSegmentStorageType
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."



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<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-51" ></span>
<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   -- mplsXCTable
   OBJECT       mplsXCLabelStackIndex
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsXCAdminStatus
   MIN-ACCESS   read-only
   DESCRIPTION "Read only support is required."

   OBJECT       mplsXCRowStatus
   SYNTAX       RowStatus { active(1) }
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsXCStorageType
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsLabelStackLabel
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsLabelStackLabelPtr
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsLabelStackRowStatus
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   OBJECT       mplsLabelStackStorageType
   MIN-ACCESS   read-only
   DESCRIPTION "Write access is not required."

   ::= { mplsLsrCompliances 2 }

-- Units of conformance.

mplsInterfaceGroup OBJECT-GROUP
   OBJECTS {
      mplsInterfaceLabelMinIn,
      mplsInterfaceLabelMaxIn,
      mplsInterfaceLabelMinOut,
      mplsInterfaceLabelMaxOut,
      mplsInterfaceTotalBandwidth,
      mplsInterfaceAvailableBandwidth,
      mplsInterfaceLabelParticipationType
   }



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   STATUS  current
   DESCRIPTION
          "Collection of objects needed for MPLS interface
           and interface performance information."
   ::= { mplsLsrGroups 1 }

mplsInSegmentGroup  OBJECT-GROUP
   OBJECTS {
      mplsInSegmentIndexNext,
      mplsInSegmentInterface,
      mplsInSegmentLabel,
      mplsInSegmentLabelPtr,
      mplsInSegmentNPop,
      mplsInSegmentAddrFamily,
      mplsInSegmentXCIndex,
      mplsInSegmentOwner,
      mplsInSegmentRowStatus,
      mplsInSegmentStorageType,
      mplsInSegmentTrafficParamPtr,
      mplsInSegmentMapIndex
   }
   STATUS  current
   DESCRIPTION
          "Collection of objects needed to implement an in-
           segment."
   ::= { mplsLsrGroups 2 }

mplsOutSegmentGroup  OBJECT-GROUP
   OBJECTS {
      mplsOutSegmentIndexNext,
      mplsOutSegmentInterface,
      mplsOutSegmentPushTopLabel,
      mplsOutSegmentTopLabel,
      mplsOutSegmentTopLabelPtr,
      mplsOutSegmentNextHopAddrType,
      mplsOutSegmentNextHopAddr,
      mplsOutSegmentXCIndex,
      mplsOutSegmentOwner,
      mplsOutSegmentPerfOctets,
      mplsOutSegmentPerfDiscards,
      mplsOutSegmentPerfErrors,
      mplsOutSegmentRowStatus,
      mplsOutSegmentStorageType,
      mplsOutSegmentTrafficParamPtr
   }
   STATUS  current
   DESCRIPTION
          "Collection of objects needed to implement an out-



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


           segment."
   ::= { mplsLsrGroups 3 }

mplsXCGroup  OBJECT-GROUP
   OBJECTS {
      mplsXCIndexNext,
      mplsXCLspId,
      mplsXCLabelStackIndex,
      mplsXCOwner,
      mplsXCStorageType,
      mplsXCAdminStatus,
      mplsXCOperStatus,
      mplsXCRowStatus,
      mplsXCNotificationsEnable
   }
   STATUS  current
   DESCRIPTION
          "Collection of objects needed to implement a
           cross-connect entry."
   ::= { mplsLsrGroups 4 }

mplsPerfGroup OBJECT-GROUP
   OBJECTS {
      mplsInSegmentPerfOctets,
      mplsInSegmentPerfPackets,
      mplsInSegmentPerfErrors,
      mplsInSegmentPerfDiscards,
      mplsInSegmentPerfDiscontinuityTime,
      mplsOutSegmentPerfOctets,
      mplsOutSegmentPerfPackets,
      mplsOutSegmentPerfDiscards,
      mplsOutSegmentPerfDiscontinuityTime,
      mplsInterfacePerfInLabelsInUse,
      mplsInterfacePerfInLabelLookupFailures,
      mplsInterfacePerfOutFragmentedPkts,
      mplsInterfacePerfOutLabelsInUse
   }

   STATUS  current
   DESCRIPTION
          "Collection of objects providing performance
           information
        about an LSR."
   ::= { mplsLsrGroups 5 }

mplsHCInSegmentPerfGroup OBJECT-GROUP
   OBJECTS { mplsInSegmentPerfHCOctets }
   STATUS  current



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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   DESCRIPTION
          "Object(s) providing performance information
           specific to out-segments for which the object
           mplsInterfaceInOctets wraps around too quickly."
   ::= { mplsLsrGroups 6 }

mplsHCOutSegmentPerfGroup OBJECT-GROUP
   OBJECTS { mplsOutSegmentPerfHCOctets }
   STATUS  current
   DESCRIPTION
          "Object(s) providing performance information
           specific to out-segments for which the object
           mplsInterfaceOutOctets wraps around too
           quickly."
   ::= { mplsLsrGroups 7 }

mplsLabelStackGroup OBJECT-GROUP
   OBJECTS {
      mplsLabelStackLabel,
      mplsLabelStackLabelPtr,
      mplsLabelStackRowStatus,
      mplsLabelStackStorageType,
      mplsMaxLabelStackDepth,
      mplsLabelStackIndexNext
   }
   STATUS current
   DESCRIPTION
          "Objects needed to support label stacking."
      ::= { mplsLsrGroups 8 }

mplsLsrNotificationGroup NOTIFICATION-GROUP
   NOTIFICATIONS {
      mplsXCUp,
      mplsXCDown
   }
   STATUS  current
   DESCRIPTION
          "Set of notifications implemented in this
           module."
   ::= { mplsLsrGroups 9 }
END










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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


<span class="h2"><a class="selflink" id="section-11" href="#section-11">11</a>.  Security Considerations</span>

   It is clear that this MIB module is potentially useful for monitoring
   of MPLS LSRs.  This MIB can also be used for configuration of certain
   objects, and anything that can be configured can be incorrectly
   configured, with potentially disastrous results.

   There are a number of management objects defined in this MIB module
   with a MAX-ACCESS clause of read-write and/or read-create.  Such
   objects may be considered sensitive or vulnerable in some network
   environments.  The support for SET operations in a non-secure
   environment without proper protection can have a negative effect on
   network operations.  These are the tables and objects and their
   sensitivity/vulnerability:

   o  the mplsLsrInSegmentTable, mplsLsrOutSegmentTable, mplsXCTable,
      mplsOutSegmentPerfTable, mplsInterfacePerfTable, and
      mplsInSegmentPerfTable collectively contain objects to provision
      MPLS interfaces, LSPs and their associated parameters on an Label
      Switching Router (LSR).  Unauthorized access to objects in these
      tables, could result in disruption of traffic on the network.
      This is especially true if an LSP has been established.  The use
      of stronger mechanisms such as SNMPv3 security should be
      considered where possible.  Specifically, SNMPv3 VACM and USM MUST
      be used with any v3 agent which implements this MIB module.
      Administrators should consider whether read access to these
      objects should be allowed, since read access may be undesirable
      under certain circumstances.

   Some of the readable objects in this MIB module "i.e., objects with a
   MAX-ACCESS other than not-accessible" may be considered sensitive or
   vulnerable in some network environments.  It is thus important to
   control even GET and/or NOTIFY access to these objects and possibly
   to even encrypt the values of these objects when sending them over
   the network via SNMP.  These are the tables and objects and their
   sensitivity/vulnerability:

   o  the mplsLsrInSegmentTable, mplsLsrOutSegmentTable, mplsXCTable,
      mplsOutSegmentPerfTable, mplsInterfacePerfTable, and
      mplsInSegmentPerfTable collectively show the LSP network topology
      and its performance characteristics. If an Administrator does not
      want to reveal this information, then these tables should be
      considered sensitive/vulnerable.








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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   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-12" href="#section-12">12</a>.  Acknowledgments</span>

   We wish to thank Ron Bonica, Adrian Farrel, Eric Gray, Tim Mancour,
   Keith McCloghrie, Bala Rajagopalan, Dan Tappan, Vasanthi Thirumalai,
   Joseph Benoit, Mike Piecuch, Joan Cucchiara. A special thanks to Bert
   Wijnen and Mike MacFaden for really getting the MIB module into
   shape.

<span class="h2"><a class="selflink" id="section-13" href="#section-13">13</a>.  IANA Considerations</span>

   As described in [<a href="#ref-MPLSMGMT" title="&quot;Multiprotocol Label Switching (MPLS) Management Overview&quot;">MPLSMGMT</a>] and as requested in the MPLS-TC-STD-MIB
   [<a href="./rfc3811" title="&quot;Definition of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management&quot;">RFC3811</a>], MPLS related standards track MIB modules should be rooted
   under the mplsStdMIB subtree.  There are 4 MPLS MIB Modules contained
   in this document, each of the following "IANA Considerations"
   subsections requests IANA for a new assignment under the mplsStdMIB
   subtree.  New assignments can only be made via a Standards Action as
   specified in [<a href="./rfc2434" title="">RFC2434</a>].

<span class="h3"><a class="selflink" id="section-13.1" href="#section-13.1">13.1</a>.  IANA Considerations for MPLS-LSR-STD-MIB</span>

   The IANA has assigned { mplsStdMIB 2 } to the MPLS-LSR-STD-MIB module
   specified in this document.










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<span class="h2"><a class="selflink" id="section-14" href="#section-14">14</a>.  References</span>

<span class="h3"><a class="selflink" id="section-14.1" href="#section-14.1">14.1</a>.  Normative References</span>

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

   [<a id="ref-RFC2515">RFC2515</a>]     Tesink, K., Ed., "Definitions of Managed Objects for
                 ATM Management", <a href="./rfc2515">RFC 2515</a>, February 1999.

   [<a id="ref-RFC2578">RFC2578</a>]     McCloghrie, K., Perkins, D., and J. Schoenwaelder,
                 "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., Perkins, D., and J. Schoenwaelder,
                 "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-RFC3031">RFC3031</a>]     Rosen, E., Viswanathan, A., and R. Callon,
                 "Multiprotocol Label Switching Architecture", <a href="./rfc3031">RFC 3031</a>,
                 January 2001.

   [<a id="ref-RFC3291">RFC3291</a>]     Daniele, M., Haberman, B., Routhier, S., and J.
                 Schoenwaelder, "Textual Conventions for Internet
                 Network Addresses", <a href="./rfc3291">RFC 3291</a>, May 2002.

   [<a id="ref-RFC3411">RFC3411</a>]     Harrington, D., Presuhn, R., and B. Wijnen, "An
                 Architecture for Describing Simple Network Management
                 Protocol (SNMP) Management Frameworks", STD 62, <a href="./rfc3411">RFC</a>
                 <a href="./rfc3411">3411</a>, December 2002.

   [<a id="ref-RFC3811">RFC3811</a>]     Nadeau, T. and J. Cucchiara, Eds., "Definition of
                 Textual Conventions (TCs) for Multiprotocol Label
                 Switching (MPLS) Management", <a href="./rfc3811">RFC 3811</a>, June 2004.

   [<a id="ref-RFC3812">RFC3812</a>]     Srinivasan, C., Viswanathan, A., and T. Nadeau,
                 "Multiprotocol Label Switching (MPLS) Traffic
                 Engineering (TE) Management Information Base (MIB)",
                 <a href="./rfc3812">RFC 3812</a>, June 2004.





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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


   [<a id="ref-IANAFamiy">IANAFamiy</a>]  Internet Assigned Numbers Authority (IANA), ADDRESS
                 FAMILY NUMBERS,
                 (<a href="http://www.iana.org/assignments/address-family-numbers">http://www.iana.org/assignments/address-family-</a>
                 <a href="http://www.iana.org/assignments/address-family-numbers">numbers</a>), for MIB see:
                 <a href="http://www.iana.org/assignments/ianaaddressfamilynumbers-mib">http://www.iana.org/assignments/</a>
                 <a href="http://www.iana.org/assignments/ianaaddressfamilynumbers-mib">ianaaddressfamilynumbers-mib</a>

<span class="h3"><a class="selflink" id="section-14.2" href="#section-14.2">14.2</a>.  Informative References</span>

   [<a id="ref-MPLSMGMT">MPLSMGMT</a>]    Nadeau, T., Srinivasan, C., and A. Farrel,
                 "Multiprotocol Label Switching (MPLS) Management
                 Overview", Work in Progress, September 2003.

   [<a id="ref-RFC2434">RFC2434</a>]     Narten, T. and H. Alvestrand, "Guidelines for Writing
                 an IANA Considerations Section in RFCs", <a href="https://www.rfc-editor.org/bcp/bcp26">BCP 26</a>, <a href="./rfc2434">RFC</a>
                 <a href="./rfc2434">2434</a>, October 1998.

   [<a id="ref-RFC3413">RFC3413</a>]     Levi, D., Meyer, P. and B. Stewart, "Simple Network
                 Management Protocol (SNMP) Applications", STD 62, <a href="./rfc3413">RFC</a>
                 <a href="./rfc3413">3413</a>, December 2002.

   [<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.


























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<span class="h2"><a class="selflink" id="section-15" href="#section-15">15</a>.  Authors' Addresses</span>

   Cheenu Srinivasan
   Bloomberg L.P.
   499 Park Ave., New York, NY 10022

   Phone: +1-212-893-3682
   EMail: cheenu@bloomberg.net


   Arun Viswanathan
   Force10 Networks, Inc.
   1440 McCarthy Blvd
   Milpitas, CA 95035

   Phone: +1-408-571-3516
   EMail: arunv@force10networks.com


   Thomas D. Nadeau
   Cisco Systems, Inc.
   300 Beaver Brook Road
   Boxboro, MA 01719

   Phone: +1-978-936-1470
   EMail: tnadeau@cisco.com

























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<span class="grey"><a href="./rfc3813">RFC 3813</a>                      MPLS LSR MIB                     June 2004</span>


<span class="h2"><a class="selflink" id="section-16" href="#section-16">16</a>.  Full Copyright Statement</span>

   Copyright (C) The Internet Society (2004).  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 retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a> and <a href="https://www.rfc-editor.org/bcp/bcp79">BCP 79</a>.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   <a href="http://www.ietf.org/ipr">http://www.ietf.org/ipr</a>.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at ietf-
   ipr@ietf.org.

Acknowledgement

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









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</pre>