File: rfc1559.txt

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Network Working Group                                         J. Saperia
Request for Comments: 1559                 Digital Equipment Corporation
Obsoletes: 1289                                            December 1993
Category: Standards Track


                     DECnet Phase IV MIB Extensions

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.

Table of Contents

   1. Introduction ................................................  1
   2. The Network Management Framework ............................  2
   2.1 Object Definitions .........................................  2
   3. Selected Objects ............................................  3
   4. Textual Conventions .........................................  4
   5. Definitions .................................................  4
   6. Changes from RFC 1289 ....................................... 67
   7. Acknowledgements ...........................................  68
   8. References .................................................  68
   9. Security Considerations ....................................  69
   10. Author's Address ..........................................  69

1.  Introduction

   This memo defines a set of DECnet Phase IV extensions that have been
   created for the Internet MIB.  It reflects changes which are the
   result of operational experience based on RFC 1289.

   When used in conjunction with the structure of management information
   (STD 16, RFC 1155), the management information base for network
   management of TCP/IP-based internets (STD 17, RFC 1213) and the
   Simple Network Management Protocol (STD 15, RFC 1157), it will be
   possible to provide integrated network management of combined TCP/IP
   and DECnet Phase IV based internets.  This document was produced by
   the DECnet Phase IV MIB working group of the Internet Engineering
   Task Force (IETF).

   With the adoption of The Simple Network Management Protocol (STD 15,
   RFC 1157), the management information base for network management of
   TCP/IP-based internets (STD 17, RFC 1213), and the structure of



DECnet Phase IV MIB Working Group                               [Page 1]

RFC 1559                  DECnet Phase IV MIB              December 1993


   management information (STD 16, RFC 1155), by the Internet, and a
   large number of vendor implementations of these standards in
   commercially available products, it became possible to provide a
   higher level of effective network management in TCP/IP-based
   internets than previously available. With the growth in the use of
   these standards, network managers desired to use this environment as
   a base for providing integrated network management of multi-protocol
   networks.

   DECnet Phase IV is one widely used protocol which often coexists in
   IP-based internets. This memo provides the mechanisms by which IP-
   based management stations can effectively manage DECnet Phase IV
   based systems (especially router products) in an integrated fashion
   through the use of the standard Internet SMI, MIB and Simple Network
   Management Protocol.

   DECnet Phase IV objects have been defined to be used in conjunction
   with the Internet MIB to allow access and control of these new
   objects by the Internet community. Additional support for other
   DECnet-based protocols such as RBMS (Remote Bridge Management
   Software) or other Digital Equipment Corporation specific hardware
   platforms is not included in this document.

2.  The Network Management Framework

   The Internet-standard Network Management Framework consists of three
   components.  They are:

   o STD 16, RFC 1155 which defines the SMI, the mechanisms used for
     describing and naming objects for the purpose of management.
     STD 16, RFC 1212 defines a more concise description mechanism,
     which is wholly consistent with the SMI.

   o STD 17, RFC 1213 defines MIB-II, the core set of managed objects
     for the Internet suite of protocols.

   o STD 15, RFC 1157 which defines the SNMP, the protocol used for
     network access to managed objects.

   The Framework permits new objects to be defined for the purpose of
   experimentation and evaluation.

2.1  Object Definitions

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the subset of Abstract Syntax Notation One (ASN.1)
   defined in the SMI.  In particular, each object type is named by an



DECnet Phase IV MIB Working Group                               [Page 2]

RFC 1559                  DECnet Phase IV MIB              December 1993


   OBJECT IDENTIFIER, an administratively assigned name.  The object
   type together with an object instance serves to uniquely identify a
   specific instantiation of the object.  For human convenience, we
   often use a textual string, termed the descriptor, to refer to the
   object type.

3.  Selected Objects

   The objects included in this memo have been created from the DIGITAL
   Network Architecture Network Management Functional Specification
   Version 4.0.0, dated July 1983. An attempt has been made to provide a
   reasonable ordering of these variables into groups. These groups are:

        System Group
        Network Management Group
        Session Group
        End Group
        Routing Group
        Circuit Group
        DDCMP Group
        DDCMP Multipoint Control Group
        Ethernet Group
        Counters Group
        Adjacency Group
        Line Group
        Non Broadcast Line Group
        Area Group

   An effort has also been made to preserve the original syntax of each
   object wherever possible, for example, a DECnet Phase IV object is
   Executor State. This was originally coded as a NICE (Network
   Information and Control Exchange) data type which is a coded single
   field object of 1 byte in length. When converted for inclusion into
   the Internet MIB using the Internet SMI, it became an enumerated
   integer.

   All objects in this memo are described using the standard Internet
   SMI and BER of STD 16, RFC 1155. A complete description of an object
   will include the name, syntax and encoding. Just as with objects
   supported in the MIB (STD 17, RFC 1213), an object name is identified
   with an object identifier which has been administratively assigned.
   This identifies an Object Type. When an object type is combined with
   a specific instance, the particular object is uniquely identified.
   The use of Object Descriptors in this memo is consistent with that of
   STD 17, RFC 1213 - they are text strings meant to be read by humans.
   The descriptors have been taken from the original DIGITAL Network
   Architecture Network Management Functional Specification Version
   4.0.0 Dated July 1983 which defined DECnet Phase IV objects. These



DECnet Phase IV MIB Working Group                               [Page 3]

RFC 1559                  DECnet Phase IV MIB              December 1993


   names were then massaged to put them in a form as consistent as
   possible with object type names listed in the standard Internet MIB.
   Object defintion information is also taken directly from the Network
   Architecture Network Managment Functional Specification cited above
   wherever possible. In this document, EXECUTOR is intended to
   reference only the DECnet software and is not intended to effect any
   other protocols which may be running on the system.

4.  Textual Conventions

   New datatypes have been introduced as a textual conventions in this
   DECnet Phase IV MIB document. The purpose of these additions is to
   facilitate understanding of new objects in this MIB. No changes to
   the SMI or the SNMP are necessary to support these conventions which
   are described in 5 (Definitions).

5.  Definitions

        DECNET-PHIV-MIB DEFINITIONS ::= BEGIN

        IMPORTS
           Gauge
              FROM RFC1155-SMI
            OBJECT-TYPE
               FROM RFC-1212
            mib-2, DisplayString
              FROM RFC1213-MIB;

   -- DECNet Phase-IV MIB

        phiv      OBJECT IDENTIFIER ::= { mib-2 18 }

   -- textual conventions

   PhivAddr ::= OCTET STRING (SIZE (2))
   -- This data type is intended as a short word representation of
   -- standard DECnet Phase IV addresses. DECnet addresses are
   -- hierarchically structured numbers assigned to a particular
   -- DECnet node. The address is structured so that the area
   -- number is contained in the most significant 6 bits of the
   -- first octet.  The next 2 bits of the first octet contain
   -- the first two bits of the host address.  The remainder of
   -- the host address is contained in the second octet.

   PhivCounter ::= INTEGER
   -- This data type has been created for DECnet counters.  These
   -- counters latch at their maximum specified value until either
   -- the system is restarted, or they are reset to zero by the user



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   -- or management software.

   InterfaceIndex ::= INTEGER
   --  The range of ifIndex, i.e., (1..2147483647)


   -- groups in the decnetiv mib

         phivSystem             OBJECT IDENTIFIER ::= { phiv 1 }
         phivManagement         OBJECT IDENTIFIER ::= { phiv 2 }
         session                OBJECT IDENTIFIER ::= { phiv 3 }
         end                    OBJECT IDENTIFIER ::= { phiv 4 }
         routing                OBJECT IDENTIFIER ::= { phiv 5 }
         circuit                OBJECT IDENTIFIER ::= { phiv 6 }
         ddcmp                  OBJECT IDENTIFIER ::= { phiv 7 }
         control                OBJECT IDENTIFIER ::= { phiv 8 }
         ethernet               OBJECT IDENTIFIER ::= { phiv 9 }
         counters               OBJECT IDENTIFIER ::= { phiv 10 }
         adjacency              OBJECT IDENTIFIER ::= { phiv 11 }
         line                   OBJECT IDENTIFIER ::= { phiv 12 }
         nonBroadcastLine       OBJECT IDENTIFIER ::= { phiv 14 }
         area                   OBJECT IDENTIFIER ::= { phiv 15 }

   -- System Group

   -- The implementation of the System Group is mandatory for
   -- all systems.

   phivSystemState OBJECT-TYPE
        SYNTAX INTEGER {
            on (1),
            off (2),
            shut (3),
            restricted (4)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This represents the operational state of the executor
            node.
            The possible states are:
            ON          Allows logical links.
            OFF         Allows no new links, terminates existing
                        links, and stops routing traffic through.
            SHUT        Allows no new logical links, does not
                        destroy existing logical links, and goes
                        to the OFF state when all logical links are
                        gone.



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            RESTRICTED  Allows no new incoming logical links from
                        other nodes.

            NOTE: These values are incremented by one compared to
            the standard DECnet values in order to maintain
            compliance with RFC 1155)."
        ::= { phivSystem 1 }

   phivExecIdent OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..32))
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This is a text string that describes the executor node
            (for example, 'Research Lab').  The string is up to 32
            characters of any type."
        ::= { phivSystem 2 }

   -- Network Management Group

   -- The implementation of the Network Management Group is
   -- mandatory for all systems which contain a DECnet-style
   -- management version.


   phivMgmtMgmtVers OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..255))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This is the read-only Network Management Version,
            consisting of the version number, the Engineering
            Change Order (ECO) number, and the user ECO number
            (for example, 3.0.0). This parameter applies to the
            executor node only."
        ::= { phivManagement 1 }

   -- Session Layer Group

   -- The implementation of the Session Layer Group is optional.
   -- A system can be said to implement this group if and only if
   -- all objects in this group are implemented.

   phivSessionSystemName OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..6))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION



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            "Name to be associated with the node identification.
            Only one name can be assigned to a node address or a
            circuit identification. No name should be used more than
            once in a DECnet network. Node-name is one to six upper
            case alphanumeric characters with at least one alpha
            character. A length of 0 indicates no name."
        ::= { session 1 }

   phivSessionInTimer OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum duration between the
            time a connect is received for a process at the
            executor node and the time that process accepts or
            rejects it. If the connect is not accepted or rejected
            by the user within the number of seconds specified,
            Session Control rejects it for the user.  A value of 0
            indicates no timer is running."
        ::= { session 2 }

   phivSessionOutTimer OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the duration between the time the
            executor requests a connect and the time that connect is
            acknowledged by the destination node. If the connect is
            not acknowledged within the number of seconds
            specified, Session Control returns an error.  A value of 0
            indicates no timer is running."
        ::= { session 3 }

   -- End Communication Layer Group

   -- The implementation of the End Communication Layer Group is optional.
   -- A system can be said to implement this group if and only if
   -- all objects in this group are implemented.

   -- Remote State Table

   phivEndRemoteTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivEndRemoteEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION



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            "Information about the state of sessions between the
            node under study and the nodes found in the table."
        ::= { end 1 }

   phivEndRemoteEntry OBJECT-TYPE
        SYNTAX PhivEndRemoteEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about a particular remote node as seen
            from the end communication layer."
        INDEX  { phivEndRemoteHostNodeID }
        ::= { phivEndRemoteTable 1 }

   PhivEndRemoteEntry ::=
        SEQUENCE {
            phivEndRemoteHostNodeID
                PhivAddr,
            phivEndRemoteState
                INTEGER,
            phivEndCircuitIndex
                INTEGER,
            phivEndActiveLinks
                INTEGER,
            phivEndDelay
                INTEGER
        }

   phivEndRemoteHostNodeID OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value is the address of the remote node to be
            evaluated."
        ::= { phivEndRemoteEntry 1 }

   phivEndRemoteState OBJECT-TYPE
        SYNTAX INTEGER {
            on (1),
            off (2),
            shut (3),
            restricted (4)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This represents the operational state of the remote node



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            being evaluated.
            The possible states are:

            ON          Allows logical links.
            OFF         Allows no new links, terminates existing
                        links, and stops routing traffic through.
            SHUT        Allows no new logical links, does not
                        destroy existing logical links, and goes
                        to the OFF state when all logical links are
                        gone.
            RESTRICTED  Allows no new incoming logical links from
                        other nodes.

            NOTE: These values are incremented by one compared to
            the standard DECnet values in order to maintain
            compliance with RFC 1155."
        ::= { phivEndRemoteEntry 2 }

   phivEndCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known circuit used to
            communicate with the remote node.  This is the same
            value as phivCircuitIndex."
        ::= { phivEndRemoteEntry 3 }

   phivEndActiveLinks OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter represents the number of active
            logical links from the executor to the destination node."
        ::= { phivEndRemoteEntry 4 }

   phivEndDelay OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter is the average round trip
            delay in seconds to the destination node. This
            parameter is kept on a remote node basis."
        ::= { phivEndRemoteEntry 5 }

   -- End System Counter Table



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   phivEndCountTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivEndCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about the counters associated with each end
            system that is known to the entity. These counters
            reflect totals from the perspective of the executor
            node."
        ::= { end 2 }

   phivEndCountEntry OBJECT-TYPE
        SYNTAX PhivEndCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about a particular session between two end
            systems."
        INDEX  { phivEndCountHostNodeID }
        ::= { phivEndCountTable 1 }

   PhivEndCountEntry ::=
        SEQUENCE {
            phivEndCountHostNodeID
                PhivAddr,
            phivEndCountSecsLastZeroed
                PhivCounter,
            phivEndCountUsrBytesRec
                PhivCounter,
            phivEndCountUsrBytesSent
                PhivCounter,
            phivEndUCountUsrMessRec
                PhivCounter,
            phivEndCountUsrMessSent
                PhivCounter,
            phivEndCountTotalBytesRec
                PhivCounter,
            phivEndCountTotalBytesSent
                PhivCounter,
            phivEndCountTotalMessRec
                PhivCounter,
            phivEndCountTotalMessSent
                PhivCounter,
            phivEndCountConnectsRecd
                PhivCounter,
            phivEndCountConnectsSent
                PhivCounter,



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            phivEndCountReponseTimeouts
                PhivCounter,
            phivEndCountRecdConnectResErrs
                PhivCounter
        }

   phivEndCountHostNodeID OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value is the address of the remote node to be
            evaluated."
        ::= { phivEndCountEntry 1 }

   phivEndCountSecsLastZeroed OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value is the number of seconds that have elapsed
            since the counters for the node in this table row were
            last set to zero. This counter is located in the
            network management layer, but is returned with the
            end system information which follows."
        ::= { phivEndCountEntry 2 }

   phivEndCountUsrBytesRec OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of user bytes received from the target host."
        ::= { phivEndCountEntry 3 }

   phivEndCountUsrBytesSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of user bytes sent to the target host."
        ::= { phivEndCountEntry 4 }

   phivEndUCountUsrMessRec OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION



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            "Number of user messages received from the target host."
        ::= { phivEndCountEntry 5 }

   phivEndCountUsrMessSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of user messages sent to the target host."
        ::= { phivEndCountEntry 6 }

   phivEndCountTotalBytesRec OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of bytes received from the target host."
        ::= { phivEndCountEntry 7 }

   phivEndCountTotalBytesSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of bytes sent to the target host."
        ::= { phivEndCountEntry 8 }

   phivEndCountTotalMessRec OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of messages received from the target host."
        ::= { phivEndCountEntry 9 }

   phivEndCountTotalMessSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of messages sent to the target host."
        ::= { phivEndCountEntry 10 }

   phivEndCountConnectsRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION



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            "Number of connects received from the target host."
        ::= { phivEndCountEntry 11 }

   phivEndCountConnectsSent OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of connects sent to the target host."
        ::= {phivEndCountEntry 12 }

   phivEndCountReponseTimeouts OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of response timeouts."
        ::= { phivEndCountEntry 13 }

   phivEndCountRecdConnectResErrs OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of received connect resource errors."
        ::= {phivEndCountEntry 14 }

   -- additional End System objects

   phivEndMaxLinks OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum active logical
            link count allowed for the executor."
        ::= { end 3 }

   phivEndNSPVers OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..255))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter represents the version number
            of the node End Communication S/W. The format is
            version number, ECO, and user ECO, e.g., 4.1.0"
        ::= { end 4 }




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   phivEndRetransmitFactor OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of times the
            source End Communication at the executor node will
            restart the retransmission timer when it expires. If
            the number is exceeded, Session Control disconnects the
            logical link for the user."
        ::= { end 5 }

   phivEndDelayFact OBJECT-TYPE
        SYNTAX INTEGER (1..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This is the number by which to multiply one sixteenth
            of the estimated round trip delay to a node to set the
            retransmission timer to that node."
        ::= { end 6 }

   phivEndDelayWeight OBJECT-TYPE
        SYNTAX INTEGER (1..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This number represents the weight to apply to a
            current round trip delay estimate to a remote node
            when updating the estimated round trip delay to a node.
            On some systems the number must be 1 less than a power
            of 2 for computational efficiency."
        ::= { end 7 }

   phivEndInactivityTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum duration of inactivity
            (no data in either direction) on a logical link before
            the node checks to see if the logical link still works.
            If no activity occurs within the minimum number of
            seconds, End Communication generates artificial
            traffic to test the link (End Communication
            specification)."
        ::= { end 8 }




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   phivEndCountZeroCount OBJECT-TYPE
        SYNTAX INTEGER {
            other (1),
            reset (2)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "When this value is set to 2, all of the counters in
            the End System Counter Table are set to zero."
        ::= { end 9 }

   phivEndMaxLinksActive OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the high water mark for the
            number of links that were active at any one time."
        ::= { end 10 }

   -- Routing Layer Group

   -- The implementation of the Routing Layer Group is mandatory for
   -- all systems that implement level 1 routing layer
   -- communications.

   phivRouteBroadcastRouteTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value determines the maximum time in seconds
             allowed between Routing updates on Ethernet
             circuits. When this timer expired before a routing
             update occurs, a routing update is forced.  With a
             standard calculation, Routing also uses this timer
             to enforce a minimum delay between routing updates."
        ::= { routing 1 }

   phivRouteBuffSize OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This parameter value determines the maximum size of
             a Routing message. It therefore determines the maximum
             size message that can be forwarded.  This size includes



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             protocol overhead down to and including the End
             Communication layer, plus a constant value of 6. (This
             value of 6 is included to provide compatibility with
             the parameter definition in Phase III, which included
             the Routing overhead.) It does not include Routing or
             Data link overhead (except for the constant value of
             6). There is one buffer size for all circuits.

             NOTE: The BUFFER SIZE defines the maximum size messages
             that the Routing layer can forward. The SEGMENT BUFFER
             SIZE (defined below) defines the maximum size messages
             that the End Communication layer can transmit or
             receive. The SEGMENT BUFFER SIZE is always less than
             or equal to the BUFFER SIZE. Normally the two
             parameters will be equal. They may be different to
             allow the network manager to alter buffer sizes
             on all nodes without interruption of service. They both
             include an extra 6 bytes for compatibility with Phase
             III."
        ::= { routing 2 }

   phivRouteRoutingVers OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..255))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter identifies the executor node's
            Routing version number.  The format is version number,
            ECO, and user ECO, e.g., 4.1.0"
        ::= { routing 3 }

   phivRouteMaxAddr OBJECT-TYPE
        SYNTAX INTEGER (1..1023)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the largest node number and,
            therefore, number of nodes that can be known about
            by the executor node's home area."
        ::= { routing 4 }

   phivRouteMaxBdcastNonRouters OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum total number of
            nonrouters the executor node can have on its Ethernet



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            circuits."
        ::= { routing 5 }

   phivRouteMaxBdcastRouters OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum total number of
            routers the executor node can have on its Ethernet
            circuits."
        ::= { routing 6 }

   phivRouteMaxBuffs OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of transmit
            buffers that Routing may use for all circuits."
        ::= { routing 7 }

   phivRouteMaxCircuits OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of Routing
            circuits that the executor node can know about."
        ::= { routing 8 }

   phivRouteMaxCost OBJECT-TYPE
        SYNTAX INTEGER (1..1022)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum total path cost
            allowed from the executor to any node within an area.
            The path cost is the sum of the circuit costs along
            a path between two nodes. This parameter defines the
            point where the executor node's Routing routing
            decision algorithm declares another node unreachable
            because the cost of the least costly path to the
            other node is excessive. For correct operation, this
            parameter must not be less than the maximum path cost
            of the network."
        ::= { routing 9 }




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   phivRouteMaxHops OBJECT-TYPE
        SYNTAX INTEGER (1..30)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of routing hops
            allowable from the executor to any other reachable node
            within an area. (A hop is the logical distance over a
            circuit between two adjacent nodes.) This parameter
            defines the point where the executor node's Routing
            routing decision algorithm declares another node
            unreachable because the length of the shortest path
            between the two nodes is too long. For correct
            operation, this parameter must not be less than the
            network diameter. (The network diameter is the
            reachability distance between the two nodes of the
            network having the greatest reachability distance,
            where reachability distance is the length the shortest
            path between a given pair of nodes.)"
        ::= { routing 10 }

   phivRouteMaxVisits OBJECT-TYPE
        SYNTAX INTEGER (1..63)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of nodes a
            message coming into the executor node can have visited.
            If the message is not for this node and the MAXIMUM
            VISITS number is exceeded, the message is discarded.
            The MAXIMUM VISITS parameter defines the point where
            the packet lifetime control algorithm discards
            a packet that has traversed too many nodes. For correct
            operation, this parameter must not be less than the
            maximum path length of the network. (The maximum path
            length is the routing distance between the two nodes of
            the network having the greatest routing distance, where
            routing distance is the length of the least costly
            path between a given pair of nodes.)"
        ::= { routing 11 }

   phivRouteRoutingTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value determines the maximum time in seconds
            allowed between Routing updates on non-Ethernet



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            circuits. When this timer expires before a routing
            update occurs, a routing update is forced."
        ::= { routing 12 }

   phivRouteSegBuffSize OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This parameter value determines the maximum size of an
            end-to-end segment. The size is a decimal integer in
            the range 1-65535. This size is in bytes. This size
            includes protocol overhead down to and including the
            End Communication layer, plus a constant value of 6.
            (This value of 6 is included to provide compatibility
            with the BUFFER SIZE parameter definition.) It does not
            include Routing or Data link overhead (except for the
            constant value of 6)."
        ::= { routing 13 }

   phivRouteType OBJECT-TYPE
        SYNTAX INTEGER {
            routing-III (1),
            nonrouting-III (2),
            area (3),
            routing-IV (4),
            nonrouting-IV (5)
        }
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "This parameter indicates the type of the executor
            node. The node-type is one of the following:

            routing-III
            nonrouting-III
            routing-IV
            ronrouting-IV
            area

            A routing node has full routing capability. A
            nonrouting node contains a subset of the Routing
            routing modules. The III and IV indicate the DNA
            phase of the node. Nonrouting nodes can deliver
            and receive packets to and from any node, but cannot
            route packets from other nodes through to other nodes.
            An area node routes between areas. Refer to the Routing
            specification for details.



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            For adjacent nodes, this is a read-only parameter that
            indicates the type of the reachable adjacent node.
            NOTE: The ROUTING-III and NONROUTING-III values are
            incremented by one compared to the standard DECnet
            values in order to maintain compliance with RFC 1155)"
        ::= { routing 14 }

   phivRouteCountAgedPktLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of aged packet losses."
        ::= { routing 15 }

   phivRouteCountNodeUnrPktLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of node unreachable packet losses."
        ::= { routing 16 }

   phivRouteCountOutRngePktLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of node out-of-range packet losses."
        ::= { routing 17 }

   phivRouteCountOverSzePktLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of Oversized packet losses."
        ::= { routing 18 }

   phivRouteCountPacketFmtErr OBJECT-TYPE
        SYNTAX PhivCounter (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of packet format errors."
        ::= { routing 19 }




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   phivRouteCountPtlRteUpdtLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of partial routing update losses."
        ::= { routing 20 }

   phivRouteCountVerifReject OBJECT-TYPE
        SYNTAX PhivCounter (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of verification rejects."
        ::= { routing 21 }

   -- Level 1 Routing Table

   phivLevel1RouteTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivLevel1RouteEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about the currently known DECnet Phase
            IV Routes."
        ::= { routing 22 }

   phivLevel1RouteEntry OBJECT-TYPE
        SYNTAX PhivLevel1RouteEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about the currently known DECnet Phase
            IV Routes."
        INDEX  { phivLevel1RouteNodeAddr }
        ::= { phivLevel1RouteTable 1 }

   PhivLevel1RouteEntry ::=
        SEQUENCE {
            phivLevel1RouteNodeAddr
                PhivAddr,
            phivLevel1RouteCircuitIndex
                INTEGER,
            phivLevel1RouteCost
                INTEGER,
            phivLevel1RouteHops
                INTEGER,
            phivLevel1RouteNextNode



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                PhivAddr
        }

   phivLevel1RouteNodeAddr OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value is the address of the node about which
            routing information is contained in this level 1
            routing table."
        ::= { phivLevel1RouteEntry 1 }

   phivLevel1RouteCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known circuit. This is
            the index to the circuit state table and is the same
            value as phivCircuitIndex."
        ::= { phivLevel1RouteEntry 2 }

   phivLevel1RouteCost OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter represents the total cost
            over the current path to the destination node. Cost is
            a positive integer value associated with using a
            circuit. Routing routes messages (data) along the path
            between two nodes with the smallest cost. COST is kept
            on a remote node basis."
        ::= { phivLevel1RouteEntry 3 }

   phivLevel1RouteHops OBJECT-TYPE
        SYNTAX INTEGER (0..127)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter represents the number of hops
            over to a destination node. A hop is Routing value
            representing the logical distance between two nodes in
            a network. HOPS is kept on a remote node basis."
        ::= { phivLevel1RouteEntry 4 }

   phivLevel1RouteNextNode OBJECT-TYPE



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        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only value indicates the next node on the
            circuit used to get to the node under scrutiny
            (next hop)."
        ::= { phivLevel1RouteEntry 5 }

   -- Additional routing parameters

   phivRouteCountZeroCount OBJECT-TYPE
        SYNTAX INTEGER {
            other (1),
            reset (2)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "When this value is set to 2, the following objects are
            set to Zero: phivRouteCountAgedPktLoss,
            phivRouteCountNodeUnrPktLoss,
            phivRouteCountOutRngePktLoss,
            phivRouteCountOverSzePktLoss,
            phivRouteCountPacketFmtErr,
            phivRouteCountPtlRteUpdtLoss, and
            phivRouteCountVerifReject."
        ::= { routing 23 }

   phivRouteSystemAddr OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "DECnet Phase IV node address."
        ::= { routing 24 }

   phivRouteRoutingType OBJECT-TYPE
        SYNTAX INTEGER {
            routing-III (1),
            nonrouting-III (2),
            area (3),
            routing-IV (4),
            nonrouting-IV (5)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION



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            "This read-write parameter indicates the type of the executor
            node. The node-type is one of the following:

            routing-III
            nonrouting-III
            routing-IV
            ronrouting-IV
            area

            A routing node has full routing capability. A
            nonrouting node contains a subset of the Routing
            routing modules. The III and IV indicate the DNA
            phase of the node. Nonrouting nodes can deliver
            and receive packets to and from any node, but cannot
            route packets from other nodes through to other nodes.
            An area node routes between areas. Refer to the Routing
            specification for details.

            For adjacent nodes, this is a read-only parameter that
            indicates the type of the reachable adjacent node.
            NOTE: The ROUTING-III and NONROUTING-III values are
            incremented by one compared to the standard DECnet
            values in order to maintain compliance with RFC 1155)"
        ::= { routing 25 }

   phivRouteSystemAddress OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "DECnet Phase IV node address."
        ::= { routing 26 }

   -- Circuit Group

   -- The implementation of the Circuit Group is mandatory for
   -- all systems.

   -- Circuit Parameters Table

   phivCircuitParametersTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivCircuitParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about the parameters associated with all
            circuits currently known."
        ::= {circuit 1 }



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   phivCircuitParametersEntry OBJECT-TYPE
        SYNTAX PhivCircuitParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Parameters information about all circuits currently
             known."
        INDEX  { phivCircuitIndex }
        ::= { phivCircuitParametersTable 1 }

   PhivCircuitParametersEntry ::=
        SEQUENCE {
            phivCircuitIndex
                INTEGER,
            phivCircuitLineIndex
                INTEGER,
            phivCircuitCommonState
                INTEGER,
            phivCircuitCommonSubState
                INTEGER,
            phivCircuitCommonName
                DisplayString,
            phivCircuitExecRecallTimer
                INTEGER,
            phivCircuitCommonType
                INTEGER,
            phivCircuitService
                INTEGER,
            phivCircuitExecCost
                INTEGER,
            phivCircuitExecHelloTimer
                INTEGER
       }

   phivCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known circuit."
        ::= { phivCircuitParametersEntry 1 }

   phivCircuitLineIndex OBJECT-TYPE
        SYNTAX InterfaceIndex
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The line on which this circuit is active.  This is



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             the same as the ifIndex."
        ::= { phivCircuitParametersEntry 2 }

   phivCircuitCommonState OBJECT-TYPE
        SYNTAX INTEGER {
            on (1),
            off (2),
            service (3),
            cleared (4)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the circuit's Network Management
            operational state. NOTE: These values are incremented
            by one compared to the standard DECnet values in order
            to maintain compliance with RFC 1155."
        ::= { phivCircuitParametersEntry 3 }

   phivCircuitCommonSubState OBJECT-TYPE
        SYNTAX INTEGER {
            starting (1),
            reflecting (2),
            looping (3),
            loading (4),
            dumping (5),
            triggering (6),
            autoservice (7),
            autoloading (8),
            autodumping (9),
            autotriggering (10),
            synchronizing (11),
            failed (12),
            running (13)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the circuit's Network Management
            operational and service substate. NOTE: These values are
            incremented by one compared to the standard DECnet values
            in order to maintain compliance with RFC 1155."
        ::= { phivCircuitParametersEntry 4 }

   phivCircuitCommonName OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..16))
        ACCESS read-only
        STATUS mandatory



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        DESCRIPTION
            "The name of the circuit entry in the table, for example,
             SVA-0 or in a level 2 router ASYNC-8 or ETHER-1)."
        ::= { phivCircuitParametersEntry 5 }

   phivCircuitExecRecallTimer OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This parameter represents the minimum number of
            seconds to wait before restarting the circuit.  A
            value of 0 indicates not timer is running."
        ::= { phivCircuitParametersEntry 6 }

   phivCircuitCommonType OBJECT-TYPE
        SYNTAX INTEGER {
            ddcmp-point (1),
            ddcmp-control (2),
            ddcmp-tributary (3),
            x25 (4),
            ddcmp-dmc (5),
            ethernet (6),
            ci (7),
            qp2-dte20 (8),
            bisync (9),
            other (14),
            fddi (15)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Represents the type of the circuit. For X.25 circuits,
            the value must be set to X25. For DDCMP and Ethernet
            circuits it is read only and is the same value as the
            protocol of the associated line.
            NOTE: Values 1 - 5 are incremented by one compared to the
            standard DECnet values in order to maintain compliance
            with RFC 1155."
        ::= { phivCircuitParametersEntry 7 }

   phivCircuitService  OBJECT-TYPE
        SYNTAX INTEGER {
            enabled (1),
            disabled (2)
        }
        ACCESS read-write
        STATUS mandatory



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        DESCRIPTION
            "This value indicates whether or not Network Management
            allows service operations on a circuit. The values for
            service-control are as follows:

            ENABLED     SERVICE state and/or service functions are
                        allowed.

            DISABLED    SERVICE state and/or service functions are not
                        allowed.

            NOTE: These values are incremented by one compared to the
            standard DECnet values in order to maintain compliance
            with RFC 1155."
        ::= { phivCircuitParametersEntry 8 }

   phivCircuitExecCost OBJECT-TYPE
        SYNTAX INTEGER (1..25)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the routing cost of the circuit.
            Routing sends messages along the path between two nodes
            having the smallest cost."
        ::= { phivCircuitParametersEntry 9 }

   phivCircuitExecHelloTimer OBJECT-TYPE
        SYNTAX INTEGER (1..8191)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value determines the frequency of Routing Hello
            messages sent to the adjacent node on the circuit."
        ::= { phivCircuitParametersEntry 10 }

   -- Circuit Counters Table

   phivCircuitCountTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivCircuitCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about the counters associated with all
            circuits currently known."
        ::= { circuit 2 }

          phivCircuitCountEntry OBJECT-TYPE
        SYNTAX PhivCircuitCountEntry



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        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Counter information about all circuits currently known"
        INDEX     { phivCircuitIndex }
        ::= { phivCircuitCountTable 1 }

   PhivCircuitCountEntry ::=
        SEQUENCE {
            phivCircuitCountSecLastZeroed
                PhivCounter,
            phivCircuitCountTermPacketsRecd
                PhivCounter,
            phivCircuitCountOriginPackSent
                PhivCounter,
            phivCircuitCountTermCongLoss
                PhivCounter,
            phivCircuitCountCorruptLoss
                PhivCounter,
            phivCircuitCountTransitPksRecd
                PhivCounter,
            phivCircuitCountTransitPkSent
                PhivCounter,
            phivCircuitCountTransitCongestLoss
                PhivCounter,
            phivCircuitCountCircuitDown
                PhivCounter,
            phivCircuitCountInitFailure
                PhivCounter,
            phivCircuitCountAdjDown
                PhivCounter,
            phivCircuitCountPeakAdj
                PhivCounter,
            phivCircuitCountBytesRecd
                PhivCounter,
            phivCircuitCountBytesSent
                PhivCounter,
            phivCircuitCountDataBlocksRecd
                PhivCounter,
            phivCircuitCountDataBlocksSent
                PhivCounter,
            phivCircuitCountUsrBuffUnav
                PhivCounter
        }

   phivCircuitCountSecLastZeroed  OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only



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        STATUS mandatory
        DESCRIPTION
            "Number of seconds since the circuit counters for this
            circuit were last zeroed."
        ::= { phivCircuitCountEntry 1 }

   phivCircuitCountTermPacketsRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of terminating packets received on this circuit."
        ::= { phivCircuitCountEntry 2 }

   phivCircuitCountOriginPackSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of originating packets sent on this circuit."
        ::= { phivCircuitCountEntry 3 }

   phivCircuitCountTermCongLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of terminating congestion losses on this
            circuit."
        ::= { phivCircuitCountEntry 4 }

   phivCircuitCountCorruptLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of corruption losses on this circuit."
        ::= { phivCircuitCountEntry 5 }

   phivCircuitCountTransitPksRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of Transit packets received on this circuit."
        ::= { phivCircuitCountEntry 6 }

   phivCircuitCountTransitPkSent OBJECT-TYPE



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        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of transit packets sent on this circuit."
        ::= { phivCircuitCountEntry 7 }

   phivCircuitCountTransitCongestLoss OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of transit congestion losses on this circuit."
        ::= { phivCircuitCountEntry 8 }

   phivCircuitCountCircuitDown OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of circuit downs on this circuit."
        ::= { phivCircuitCountEntry 9 }

   phivCircuitCountInitFailure OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of Initialization failures on this circuit."
        ::= { phivCircuitCountEntry 10 }

   phivCircuitCountAdjDown OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This counter indicates the number of adjacency losses
            that result from any of the following:
                 Node listener timeout
                 Invalid data received at node listener
                 Unexpected control (initialization or verification)
                     message received
                 Routing message received with a checksum error
                 Node identification from a routing message or a
                 Hello message that is not the one expected Hello
                 message received indicating that connectivity
                 became one-way
                 Adjacency idled."



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        ::= { phivCircuitCountEntry 11 }

   phivCircuitCountPeakAdj OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This counter indicates the maximum number of nodes
            that are up on the circuit."
        ::= { phivCircuitCountEntry 12 }

   phivCircuitCountBytesRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of bytes received on this circuit."
        ::= { phivCircuitCountEntry 13 }

   phivCircuitCountBytesSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of bytes sent on this circuit."
        ::= { phivCircuitCountEntry 14 }

   phivCircuitCountDataBlocksRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of data blocks received on this circuit."
        ::= { phivCircuitCountEntry 15 }

   phivCircuitCountDataBlocksSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of data blocks sent on this circuit."
        ::= { phivCircuitCountEntry 16 }

   phivCircuitCountUsrBuffUnav OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION



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            "Number of user buffer unavailable errors."
        ::= { phivCircuitCountEntry 17 }

   -- Additional Circuit Parameters

   phivCircuitOrigQueueLimit OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This parameter indicates the maximum number of
            originating packets that may be outstanding on this
            circuit. This does not include route-thru traffic."
        ::= { circuit 3 }

   phivCircuitCountZeroCount OBJECT-TYPE
        SYNTAX INTEGER {
            other (1),
            reset (2)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "When this value is set to 2, all of the counters in the
            Circuit Counter Table are set to zero."
        ::= { circuit 4 }

   -- DDCMP Circuit Group

   -- The implementation of the DDCMP Circuit Group is optional.
   -- A system can be said to implement this group if and only if
   -- all objects in this group are implemented.

   -- DDCMP Parameters Table

   phivDDCMPCircuitParametersTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivDDCMPCircuitParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about DDCMP circuit parameters."
        ::= { ddcmp 1}

   phivDDCMPCircuitParametersEntry OBJECT-TYPE
        SYNTAX PhivDDCMPCircuitParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION



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            "Parameters information about DDCMP circuits currently
             known."
        INDEX     { phivDDCMPCircuitIndex }
        ::= { phivDDCMPCircuitParametersTable 1 }

   PhivDDCMPCircuitParametersEntry ::=
        SEQUENCE {
            phivDDCMPCircuitIndex
                INTEGER,
            phivDDCMPCircuitAdjNodeAddr
                INTEGER,
            phivDDCMPCircuitTributary
                INTEGER
        }

   phivDDCMPCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known DDCMP circuit.
            This is the same value as phivCircuitIndex."
        ::= { phivDDCMPCircuitParametersEntry 1 }

   phivDDCMPCircuitAdjNodeAddr OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The address of the adjacent node."
        ::= { phivDDCMPCircuitParametersEntry 2 }

   phivDDCMPCircuitTributary OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the Data Link physical tributary
            address of the circuit."
        ::= { phivDDCMPCircuitParametersEntry 3 }

   -- DDCMP Circuit Counter Table

   phivDDCMPCircuitCountTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivDDCMPCircuitCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION



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            "Information about the DDCMP counters associated with all
            circuits currently known."
        ::= { ddcmp 2 }

   phivDDCMPCircuitCountEntry OBJECT-TYPE
        SYNTAX PhivDDCMPCircuitCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Counter information about DDCMP circuits now known"
        INDEX     { phivCircuitIndex }
        ::= { phivDDCMPCircuitCountTable 1 }

   PhivDDCMPCircuitCountEntry ::=
        SEQUENCE {
            phivDDCMPCircuitErrorsInbd
                PhivCounter,
            phivDDCMPCircuitErrorsOutbd
                PhivCounter,
            phivDDCMPCircuitRmteReplyTimeouts
                PhivCounter,
            phivDDCMPCircuitLocalReplyTimeouts
                PhivCounter,
            phivDDCMPCircuitRmteBuffErrors
                PhivCounter,
            phivDDCMPCircuitLocalBuffErrors
                PhivCounter,
            phivDDCMPCircuitSelectIntervalsElap
                PhivCounter,
            phivDDCMPCircuitSelectTimeouts
                PhivCounter
        }

   phivDDCMPCircuitErrorsInbd OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of Data errors inbound."
        ::= { phivDDCMPCircuitCountEntry 1 }

   phivDDCMPCircuitErrorsOutbd OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of outbound data errors."
        ::= { phivDDCMPCircuitCountEntry 2 }



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   phivDDCMPCircuitRmteReplyTimeouts OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of remote reply timeouts."
        ::= { phivDDCMPCircuitCountEntry 3 }

   phivDDCMPCircuitLocalReplyTimeouts OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of local Reply timeouts."
        ::= { phivDDCMPCircuitCountEntry 4 }

   phivDDCMPCircuitRmteBuffErrors OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of remote reply time out errors."
        ::= { phivDDCMPCircuitCountEntry 5 }

   phivDDCMPCircuitLocalBuffErrors  OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of local buffer errors."
        ::= { phivDDCMPCircuitCountEntry 6 }

   phivDDCMPCircuitSelectIntervalsElap OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Selection intervals that have elapsed."
        ::= {phivDDCMPCircuitCountEntry 7 }

   phivDDCMPCircuitSelectTimeouts OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of selection timeouts."
        ::= {phivDDCMPCircuitCountEntry 8 }



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   -- DDCMP Line Count Table

   phivDDCMPLineCountTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivDDCMPLineCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "The DDCMP Line Count Table."
        ::= { ddcmp 3 }

   phivDDCMPLineCountEntry OBJECT-TYPE
        SYNTAX PhivDDCMPLineCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "There is one entry in the table for each line."
        INDEX  { phivDDCMPLineCountIndex }
        ::= { phivDDCMPLineCountTable 1 }

   PhivDDCMPLineCountEntry ::=
        SEQUENCE {
            phivDDCMPLineCountIndex
                InterfaceIndex,
            phivDDCMPLineCountDataErrsIn
                PhivCounter,
            phivDDCMPLineCountRmteStationErrs
                PhivCounter,
            phivDDCMPLineCountLocalStationErrs
                PhivCounter
        }

   phivDDCMPLineCountIndex OBJECT-TYPE
        SYNTAX InterfaceIndex
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The line on which this entry's equivalence is
            effective. The interface identified by a particular
            value of this index is the same interface as
            identified by the same value of phivLineIndex.
            This value is the ifIndex."
        ::= { phivDDCMPLineCountEntry 1 }

   phivDDCMPLineCountDataErrsIn OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory



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        DESCRIPTION
            "Number of data errors inbound."
        ::= { phivDDCMPLineCountEntry 2 }

   phivDDCMPLineCountRmteStationErrs OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of remote station errors."
        ::= { phivDDCMPLineCountEntry 3 }

   phivDDCMPLineCountLocalStationErrs OBJECT-TYPE
        SYNTAX PhivCounter (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
             "Number of local station errors."
        ::= { phivDDCMPLineCountEntry 4 }

   -- DDCMP Multipoint Circuit Control Group

   -- The implementation of the DDCMP Multipoint Circuit Control
   -- Group is optional.  A system can be said to implement this group
   -- if and only if all objects in this group are implemented.

   phivControlSchedTimer OBJECT-TYPE
        SYNTAX INTEGER (50..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of milliseconds
            between recalculation of tributary polling priorities."
        DEFVAL { 200 }
        ::= { control 1 }

   phivControlDeadTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of milliseconds
            between polls of one of the set of dead
            tributaries."
        DEFVAL { 10000 }
        ::= { control 2 }

   phivControlDelayTimer OBJECT-TYPE



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        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the minimum number of
            milliseconds to delay between polls. The delay timer
            limits the effect of a very fast control station on
            slow tributaries."
        ::= { control 3 }

   phivControlStreamTimer OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of milliseconds a
            tributary or a half duplex remote station is
            allowed to hold the line.

            NOTE: This parameter can also be applied to
            half-duplex lines of type DDCMP POINT."
        DEFVAL { 6000 }
        ::= { control 4 }

   -- DDCMP Multipoint Circuit Control Parameters Table

   phivControlParametersTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivControlParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about control circuit parameters."
        ::= { control 5 }

   phivControlParametersEntry OBJECT-TYPE
        SYNTAX PhivControlParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Parameters information about control circuits
            currently known."
        INDEX  { phivControlCircuitIndex }
        ::= { phivControlParametersTable 1 }

   PhivControlParametersEntry ::=
        SEQUENCE {
            phivControlCircuitIndex
                INTEGER,



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            phivControlBabbleTimer
                INTEGER,
            phivControlMaxBuffs
                INTEGER,
            phivControlMaxTransmits
                INTEGER,
            phivControlDyingBase
                INTEGER,
            phivControlDyingIncrement
                INTEGER,
            phivControlDeadThreshold
                INTEGER,
            phivControlDyingThreshold
                INTEGER,
            phivControlInactTreshold
                INTEGER,
            phivControlPollingState
                INTEGER,
            phivControlPollingSubState
                INTEGER,
            phivControlTransTimer
                INTEGER
        }

   phivControlCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known multipoint
            control circuit.
            This is the same value as phivCircuitIndex."
        ::= { phivControlParametersEntry 1 }

   phivControlBabbleTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of milliseconds that a
            selected tributary or remote half-duplex station is
            allowed to transmit."
        DEFVAL { 6000 }
        ::= { phivControlParametersEntry 2 }

   phivControlMaxBuffs  OBJECT-TYPE
        SYNTAX INTEGER (1..254)
        ACCESS read-write



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        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of buffers the
            tributary can use from a common buffer pool. If not
            set, there is no common buffer pool and buffers are
            explicitly supplied by the higher level. Count is a
            decimal integer in the range 1-254."
        ::= { phivControlParametersEntry 3 }

   phivControlMaxTransmits  OBJECT-TYPE
        SYNTAX INTEGER (1..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of data
            messages that can be transmitted at one time. Count
            is a decimal integer in the range 1-255."
        DEFVAL { 4 }
        ::= { phivControlParametersEntry 4 }

   phivControlDyingBase OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the base priority to which a
            tributary is reset each time it has been polled. A
            separate base can be set for each of the indicated
            polling states. Base is a decimal integer in the range
            0-255.  If not set, the defaults are: active, 255;
            inactive, 0; and dying, 0."
        ::= { phivControlParametersEntry 5 }

   phivControlDyingIncrement OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the increment added to the
            tributary priority each time the scheduling timer
            expires.  If not set, the defaults are: active, 0;
            inactive, 64; and dying, 16."
        ::= { phivControlParametersEntry 6 }

   phivControlDeadThreshold OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-write
        STATUS mandatory



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        DESCRIPTION
            "This value represents the number of times to poll the
            active, inactive, or dying tributary before changing
            its polling state to dead because of receive timeouts.
            Count is a decimal integer in the range 0-255."
        DEFVAL { 8 }
        ::= { phivControlParametersEntry 7 }

   phivControlDyingThreshold OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of times to poll the
            active or inactive tributary before changing its
            polling state to dying because of receive timeouts.
            Count is a decimal integer in the range 0-255."
        DEFVAL { 2 }
        ::= { phivControlParametersEntry 8 }

   phivControlInactTreshold OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of times to poll the
            active tributary before changing its polling state to
            inactive because of no data response. Count is a
            decimal integer in the range
            0-255."
        DEFVAL { 8 }
        ::= { phivControlParametersEntry 9 }

   phivControlPollingState OBJECT-TYPE
        SYNTAX INTEGER {
            automatic (1),
            active (2),
            inactive (3),
            dying (4),
            dead (5)
        }
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the state of the tributary
            relative to the multipoint polling algorithm.  If not
            set the default is AUTOMATIC. The possible states are:




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            AUTOMATIC

              The tributary's state is allowed to vary according to
              the operation of the polling algorithm.

            ACTIVE/INACTIVE/DYING/DEAD

              The tributary is locked in the specified state.

             NOTE: These values are incremented by one compared to
             the standard DECnet values in order to maintain
             compliance with RFC 1155."
        ::= { phivControlParametersEntry 10 }

   phivControlPollingSubState OBJECT-TYPE
        SYNTAX INTEGER {
            active (1),
            inactive (2),
            dying (3),
            dead (4)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the tributary's state as
            determined by the polling algorithm.  This applies
            only when the polling state is AUTOMATIC and is
            read-only to Network Management.  Polling-substate is
            one of ACTIVE, INACTIVE, DYING, or DEAD.  It is
            displayed as a tag on the polling state, for example:
            AUTOMATIC-INACTIVE."
        ::= { phivControlParametersEntry 11 }

   phivControlTransTimer OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of milliseconds to
            delay between data message transmits. Milliseconds is
            a decimal integer in the range 0-65535."
        DEFVAL { 0 }
        ::= { phivControlParametersEntry 12 }

   -- Ethernet Group

   -- The implementation of the Ethernet Group is mandatory
   -- for all systems which support ethernet links.



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   -- Ethernet Parameters Table

   phivEthLinkParametersTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivEthLinkParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
             "Information about ethernet link parameters."
        ::= { ethernet 1}

   phivEthLinkParametersEntry OBJECT-TYPE
        SYNTAX PhivEthLinkParametersEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Parameter information about ethernet links currently
            known."
        INDEX     { phivEthLinkIndex }
        ::= { phivEthLinkParametersTable 1 }

   PhivEthLinkParametersEntry ::=
        SEQUENCE {
            phivEthLinkIndex
                INTEGER,
            phivEthDesigRouterNodeAddr
                PhivAddr,
            phivEthMaxRouters
                INTEGER,
            phivEthRouterPri
                INTEGER,
            phivEthHardwareAddr
                OCTET STRING
         }

   phivEthLinkIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The circuit over which this links information is
            collected.  This is the same as phivCircuitIndex."
        ::= { phivEthLinkParametersEntry 1 }

   phivEthDesigRouterNodeAddr OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory



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        DESCRIPTION
            "This value is the address of the designated router."
        ::= { phivEthLinkParametersEntry 2 }

   phivEthMaxRouters OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This parameter is the maximum number of routers (other
             than the executor itself) allowed on the circuit by
             Routing for circuits that are owned by the executor
             node."
        ::= { phivEthLinkParametersEntry 3 }

   phivEthRouterPri OBJECT-TYPE
        SYNTAX INTEGER (0..127)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This parameter is the priority that this router is to
             have in the selection of designated router for the
             circuit on circuits that are owned by the executor
             node."
        DEFVAL { 64 }
        ::= { phivEthLinkParametersEntry 4 }

   phivEthHardwareAddr OBJECT-TYPE
        SYNTAX OCTET STRING (SIZE (6))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter is the address that is
            associated with the line device hardware as seen by
            the DECnet Software.  This value is not the same as
            ifPhysAddress."
        ::= { phivEthLinkParametersEntry 5 }

   -- Counters Group

   -- The implementation of the Counters Group is optional.
   -- A system can be said to implement this group if and only if
   -- all objects in this group are implemented.

   -- Counters Table

   phivCountersCountTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivCountersCountEntry



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        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Information about ethernet link counters."
        ::= { counters 1 }

   phivCountersCountEntry OBJECT-TYPE
        SYNTAX PhivCountersCountEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Counter information about ethernet links currently
            known."
        INDEX     { phivCountersIndex }
        ::= { phivCountersCountTable 1 }

   PhivCountersCountEntry ::=
        SEQUENCE {
            phivCountersIndex
                InterfaceIndex,
            phivCountersCountBytesRecd
                PhivCounter,
            phivCountersCountBytesSent
                PhivCounter,
            phivCountersCountDataBlocksRecd
                PhivCounter,
            phivCountersCountDataBlocksSent
                PhivCounter,
            phivCountersCountEthUsrBuffUnav
                PhivCounter,
            phivCountersCountMcastBytesRecd
                PhivCounter,
            phivCountersCountDataBlksRecd
                PhivCounter,
            phivCountersCountDataBlksSent
                PhivCounter,
            phivCountersCountMcastBlksRecd
                PhivCounter,
            phivCountersCountBlksSentDef
                PhivCounter,
            phivCountersCountBlksSentSingleCol
                PhivCounter,
            phivCountersCountBlksSentMultCol
                PhivCounter,
            phivCountersCountSendFailure
                PhivCounter,
            phivCountersCountCollDetectFailure
                PhivCounter,



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            phivCountersCountReceiveFailure
                PhivCounter,
            phivCountersCountUnrecFrameDest
                PhivCounter,
            phivCountersCountDataOver
                PhivCounter,
            phivCountersCountSysBuffUnav
                PhivCounter,
            phivCountersCountUsrBuffUnav
                PhivCounter
         }

   phivCountersIndex OBJECT-TYPE
        SYNTAX InterfaceIndex
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The interface to which these counters apply.  This is
            the same interface as identified by the same value of
            phivLineIndex. This value is the ifIndex."
        ::= { phivCountersCountEntry 1 }

   phivCountersCountBytesRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of bytes received over this link."
        ::= { phivCountersCountEntry 2 }

   phivCountersCountBytesSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of bytes sent over this link."
        ::= { phivCountersCountEntry 3 }

   phivCountersCountDataBlocksRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "Number of data blocks received over this link."
        ::= { phivCountersCountEntry 4 }

   phivCountersCountDataBlocksSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)



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        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "Number of data blocks sent over this link."
        ::= { phivCountersCountEntry 5 }

   phivCountersCountEthUsrBuffUnav OBJECT-TYPE
        SYNTAX PhivCounter (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of user buffer unavailable errors over this
            link."
        ::= { phivCountersCountEntry 6 }

   phivCountersCountMcastBytesRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of multicast bytes received over this link."
        ::= { phivCountersCountEntry 7 }

   phivCountersCountDataBlksRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of data blocks received over this link."
        ::= { phivCountersCountEntry 8 }

   phivCountersCountDataBlksSent OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of data blocks sent over this link."
        ::= { phivCountersCountEntry 9 }

   phivCountersCountMcastBlksRecd OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of multicast blocks received over this link."
        ::= { phivCountersCountEntry 10 }

   phivCountersCountBlksSentDef OBJECT-TYPE



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        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of blocks sent, initially deferred over this
            link."
        ::= { phivCountersCountEntry 11 }

   phivCountersCountBlksSentSingleCol OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of blocks sent, single collision over this link."
        ::= { phivCountersCountEntry 12 }

   phivCountersCountBlksSentMultCol OBJECT-TYPE
        SYNTAX PhivCounter (0..2147483647)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of blocks sent, multiple collisions over this
            link."
        ::= { phivCountersCountEntry 13 }

   phivCountersCountSendFailure OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of send failures over this link."
        ::= { phivCountersCountEntry 14 }

   phivCountersCountCollDetectFailure OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of collision detect check failures over this
             link."
        ::= { phivCountersCountEntry 15 }

   phivCountersCountReceiveFailure OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of receive failures over this link."



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        ::= { phivCountersCountEntry 16 }

   phivCountersCountUnrecFrameDest OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of unrecognized frame destinations over this
            link."
        ::= { phivCountersCountEntry 17 }

   phivCountersCountDataOver OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of data overruns over this link."
        ::= { phivCountersCountEntry 18 }

   phivCountersCountSysBuffUnav OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of system buffer unavailables over this link."
        ::= { phivCountersCountEntry 19 }

   phivCountersCountUsrBuffUnav OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Number of user buffer unavailables."
        ::= { phivCountersCountEntry 20 }

   -- Adjacency Group

   -- The implementation of the Adjacency Group is mandatory for all
   -- conformant implementations of this memo.

   -- The phivAdjTable has been made obsolete it has been replaced with
   -- the phivAdjNodeTable.

   phivAdjTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivAdjEntry
        ACCESS not-accessible
        STATUS obsolete
        DESCRIPTION



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            "The Adjacency Table."
        ::= { adjacency 1 }

   phivAdjEntry OBJECT-TYPE
        SYNTAX PhivAdjEntry
        ACCESS not-accessible
        STATUS obsolete
        DESCRIPTION
            "There is one entry in the table for each adjacency."
        INDEX  { phivAdjCircuitIndex }
        ::= { phivAdjTable 1 }

   PhivAdjEntry ::=
        SEQUENCE {
            phivAdjCircuitIndex
                INTEGER,
            phivAdjNodeAddr
                PhivAddr,
            phivAdjBlockSize
                INTEGER,
            phivAdjListenTimer
                INTEGER (1..65535),
            phivAdjCircuitEtherServPhysAddr
                OCTET STRING,
            phivAdjType
                INTEGER,
            phivAdjState
                INTEGER,
            phivAdjPriority
                INTEGER,
            phivAdjExecListenTimer
                INTEGER (1..65535)
         }
   phivAdjCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "A unique index value for each known circuit."
        ::= { phivAdjEntry 1 }

   phivAdjNodeAddr OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "The address of the adjacent node."
        ::= { phivAdjEntry 2 }



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   phivAdjBlockSize OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "This read-only parameter is the block size that was
            negotiated with the adjacent Routing layer during Routing
            initialization over a particular circuit. It includes the
            routing header, but excludes the data link header. This
            parameter is qualified by ADJACENT NODE."
        ::= { phivAdjEntry 3 }

   phivAdjListenTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "This value determines the maximum number of seconds
            allowed to elapse before Routing receives some message
            (either a Hello message or a user message) from the
            adjacent node on the circuit. It was agreed during
            Routing initialization with the adjacent Routing layer.
            This parameter is qualified by ADJACENT NODE."
        ::= { phivAdjEntry 4 }

   phivAdjCircuitEtherServPhysAddr OBJECT-TYPE
        SYNTAX OCTET STRING ( SIZE (6) )
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "This parameter indicates the Ethernet physical address
            of an adjacent node that is being serviced on this
            circuit. This parameter is a qualifier for SERVICE
            SUBSTATE."
        ::= { phivAdjEntry 5 }

   phivAdjType OBJECT-TYPE
        SYNTAX INTEGER {
            routing-III (1),
            nonrouting-III (2),
            area (3),
            routing-IV (4),
            nonrouting-IV (5)
        }
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION



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            "This parameter indicates the type of adjacency.

            For adjacent nodes, this is a read-only parameter that
            indicates the type of the reachable adjacent node.
            NOTE: The routing-III and nonrouting-III values are
            incremented by one compared to the standard DECnet
            values in order to maintain compliance with RFC 1155)"
        ::= { phivAdjEntry 6 }

   phivAdjState OBJECT-TYPE
        SYNTAX INTEGER {
            initializing (1),          -- Ethernet one-way
            up (2),                    -- Ethernet two-way
            run (3),                   -- The eight DDCMP/X.25 states
            circuit-rejected (4),
            data-link-start (5),
            routing-layer-initialize (6),
            routing-layer-verify (7),
            routing-layer-complete (8),
            off (9),
            halt (10)
        }
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "This value indicates the state of a router adjacency.
            On adjacencies over a circuit of type
            (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
            adjacent node of type (phivAdjType) ROUTING IV or AREA,
            this variable is the state of the Ethernet
            Initialization Layer for this adjacency, and can have
            values INITIALIZING or UP. (See Section 9.1.1 of
            DECnet Phase IV Routing Layer Functional Specification.)

            On adjacencies over a circuit of type
            (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
            adjacent node of type (phivAdjType) NONROUTING IV,
            this variable will always take on the value UP.

            On adjacencies over a circuit of type
            (phivCircuitCommonType) DDCMP POINT, DDCMP CONTROL,
            DDCMP TRIBUTARY, DDCMP DMC, or X.25, this variable is
            the state of the Routing Layer Initialization Circuit
            State. (See section 7.3, ibid.)  It can have values
            between RUN and HALT.

            On adjacencies over a circuit of type
            (phivCircuitCommonType) OTHER, this variable may be



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            used in a manner consistent with the Initialization
            Layer used on that circuit."
        ::= { phivAdjEntry 7 }

   phivAdjPriority OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "Priority assigned by the adjacent node for this
            circuit."
     ::= { phivAdjEntry 8 }

   phivAdjExecListenTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS obsolete
        DESCRIPTION
            "This read-only value determines the maximum number of
            seconds allowed to elapse before Routing receives some
            message (either a Hello message or a user message) from
            the adjacent node on the circuit. It was agreed during
            Routing initialization with the adjacent Routing layer."
        ::= { phivAdjEntry 9 }

   -- New Adjacency Table this replaces the phivAdjTable.

   phivAdjNodeTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivAdjNodeEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "The Adjacent Node Table."
        ::= { adjacency 2 }

   phivAdjNodeEntry OBJECT-TYPE
        SYNTAX PhivAdjNodeEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "There is one entry in the table for each adjacency."
        INDEX  { phivAdjNodeCircuitIndex, phivAdjAddr }
        ::= { phivAdjNodeTable 1 }

   PhivAdjNodeEntry ::=
        SEQUENCE {
            phivAdjNodeCircuitIndex
                INTEGER,



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            phivAdjAddr
                PhivAddr,
            phivAdjNodeBlockSize
                INTEGER,
            phivAdjNodeListenTimer
                INTEGER,
            phivAdjNodeCircuitEtherServPhysAddr
                OCTET STRING,
            phivAdjNodeType
                INTEGER,
            phivAdjNodeState
                INTEGER,
            phivAdjNodePriority
                INTEGER
         }

   phivAdjNodeCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known circuit.  This
            value is the same as phivCircuitIndex and identifies the
            circuit over which the adjacency is realized."
        ::= { phivAdjNodeEntry 1 }

   phivAdjAddr OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The address of the adjacent node."
        ::= { phivAdjNodeEntry 2 }

   phivAdjNodeBlockSize OBJECT-TYPE
        SYNTAX INTEGER
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This read-only parameter is the block size that was
            negotiated with the adjacent Routing layer during Routing
            initialization over a particular circuit. It includes the
            routing header, but excludes the data link header. This
            parameter is qualified by ADJACENT NODE."
        ::= { phivAdjNodeEntry 3 }

   phivAdjNodeListenTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)



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        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value determines the maximum number of seconds
            allowed to elapse before Routing receives some message
            (either a Hello message or a user message) from the
            adjacent node on the circuit. It was agreed during
            Routing initialization with the adjacent Routing layer.
            This parameter is qualified by ADJACENT NODE."
        ::= { phivAdjNodeEntry 4 }

   phivAdjNodeCircuitEtherServPhysAddr OBJECT-TYPE
        SYNTAX OCTET STRING (SIZE (6))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This parameter indicates the Ethernet physical address
            of an adjacent node that is being serviced on this
            circuit. This parameter is a qualifier for SERVICE
            SUBSTATE."
        ::= { phivAdjNodeEntry 5 }

   phivAdjNodeType OBJECT-TYPE
        SYNTAX INTEGER {
            routing-III (1),
            nonrouting-III (2),
            area (3),
            routing-IV (4),
            nonrouting-IV (5)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This parameter indicates the type of adjacency.

            For adjacent nodes, this is a read-only parameter that
            indicates the type of the reachable adjacent node.
            NOTE: The routing-III and nonrouting-III values are
            incremented by one compared to the standard DECnet
            values in order to maintain compliance with RFC 1155)"
        ::= { phivAdjNodeEntry 6 }

   phivAdjNodeState OBJECT-TYPE
        SYNTAX INTEGER {
            initializing (1),          -- Ethernet one-way
            up (2),                    -- Ethernet two-way
            run (3),                   -- The eight DDCMP/X.25 states
            circuit-rejected (4),



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            data-link-start (5),
            routing-layer-initialize (6),
            routing-layer-verify (7),
            routing-layer-complete (8),
            off (9),
            halt (10)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value indicates the state of a router adjacency.
            On adjacencies over a circuit of type
            (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
            adjacent node of type (phivAdjNodeType) ROUTING IV or AREA,
            this variable is the state of the Ethernet
            Initialization Layer for this adjacency, and can have
            values INITIALIZING or UP. (See Section 9.1.1 of
            DECnet Phase IV Routing Layer Functional Specification.)

            On adjacencies over a circuit of type
            (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
            adjacent node of type (phivAdjNodeType) NONROUTING IV,
            this variable will always take on the value UP.

            On adjacencies over a circuit of type
            (phivCircuitCommonType) DDCMP POINT, DDCMP CONTROL,
            DDCMP TRIBUTARY, DDCMP DMC, or X.25, this variable is
            the state of the Routing Layer Initialization Circuit
            State. (See section 7.3, ibid.)  It can have values
            between RUN and HALT.

            On adjacencies over a circuit of type
            (phivCircuitCommonType) OTHER, this variable may be
            used in a manner consistent with the Initialization
            Layer used on that circuit."
        ::= { phivAdjNodeEntry 7 }

   phivAdjNodePriority OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "Priority assigned by the adjacent node for this
            circuit."
           ::= { phivAdjNodeEntry 8 }






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   -- Line Group

   -- The implementation of the Line Group is mandatory for all
   -- conformant implementations of this memo.

   phivLineTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivLineEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "The Line Table."
        ::= { line 1 }

   phivLineEntry OBJECT-TYPE
        SYNTAX PhivLineEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "There is one entry in the table for each line."
        INDEX  { phivLineIndex }
        ::= { phivLineTable 1 }

   PhivLineEntry ::=
        SEQUENCE {
            phivLineIndex
                InterfaceIndex,
            phivLineName
                DisplayString,
            phivLineState
                INTEGER,
            phivLineSubstate
                INTEGER,
            phivLineService
                INTEGER,
            phivLineDevice
                DisplayString,
            phivLineReceiveBuffs
                INTEGER,
            phivLineProtocol
                INTEGER,
            phivLineServiceTimer
                INTEGER,
            phivLineMaxBlock
                INTEGER
        }

   phivLineIndex OBJECT-TYPE
        SYNTAX InterfaceIndex



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        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The line on which this entry's equivalence is effective.
            This is the same as the ifIndex."
        ::= { phivLineEntry 1 }

   phivLineName OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..16))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The name of the line on this row of the table."
        ::= { phivLineEntry 2 }

   phivLineState OBJECT-TYPE
        SYNTAX INTEGER {
            on (1),
            off (2),
            service (3),
            cleared (4)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents Network Management operational
            state.
            NOTE that these values are incremented by one compared to
            the standard DECnet values."
        ::= { phivLineEntry 3 }

   phivLineSubstate OBJECT-TYPE
        SYNTAX INTEGER {
            starting (1),
            reflecting (2),
            looping (3),
            loading (4),
            dumping (5),
            triggering (6),
            auto-service (7),
            auto-loading (8),
            auto-dumping (9),
            auto-triggering (10),
            synchronizing (11),
            failed (12),
            running (13)
        }
        ACCESS read-only



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        STATUS mandatory
        DESCRIPTION
            "This value represents the line's read-only Network
            Management substate.
            NOTE that these values are incremented by one compared to
            the standard DECnet values."
        ::= { phivLineEntry 4 }

   phivLineService OBJECT-TYPE
        SYNTAX INTEGER {
            starting (1),
            reflecting (2),
            looping (3),
            other (4)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the line's read-only Network
            Management service.
            NOTE that these values are incremented by one compared to
            the standard DECnet values and OTHER is a new addition."
        ::= { phivLineEntry 5 }

   phivLineDevice OBJECT-TYPE
        SYNTAX DisplayString (SIZE (0..16))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the Physical Link device to be
            used on the line."
        ::= { phivLineEntry 6 }

   phivLineReceiveBuffs OBJECT-TYPE
        SYNTAX INTEGER (0..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the number of receive buffers
            reserved for the line. It is a decimal number in
            the range 0-65535.  0 is supported for those vendors
            that do not reserve buffers on a per line basis and
            use a pool of buffers that can be used by any line."
        ::= { phivLineEntry 7 }

   phivLineProtocol OBJECT-TYPE
        SYNTAX INTEGER {
            ddcmp-point (1),



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            ddcmp-control (2),
            ddcmp-tributary (3),
            reserved (4),
            ddcmp-dmc (5),
            olapb (6),
            ethernet (7),
            ci (8),
            qp2 (9),
            other (14),
            fddi (15)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the protocol used on the line
            device.  Note that these values are incremented by
            one compared to the standard DECnet values."
        ::= { phivLineEntry 8 }

   phivLineServiceTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the amount of time in
            milliseconds allowed to elapse before a Data Link
            receive request completes while doing service
            operations."
        ::= { phivLineEntry 9 }

   phivLineMaxBlock OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the Data Link maximum block
            size on the line."
        ::= { phivLineEntry 10 }

   -- Non Broadcast Line Group

   -- The implementation of the Non Broadcast Line Group is optional.
   -- A system can be said to implement this group if and only if
   -- all objects in this group are implemented.

   phivNonBroadcastTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivNonBroadcastEntry
        ACCESS not-accessible



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        STATUS mandatory
        DESCRIPTION
            "The Non Broadcast Table."
        ::= { nonBroadcastLine 1 }

   phivNonBroadcastEntry OBJECT-TYPE
        SYNTAX PhivNonBroadcastEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "There is one entry in the table for each
            Non Broadcast line."
        INDEX  { phivNonBroadcastIndex }
        ::= { phivNonBroadcastTable 1 }

   PhivNonBroadcastEntry ::=
        SEQUENCE {
            phivNonBroadcastIndex
                InterfaceIndex,
            phivNonBroadcastController
                INTEGER,
            phivNonBroadcastDuplex
                INTEGER,
            phivNonBroadcastClock
                INTEGER,
            phivNonBroadcastRetransmitTimer
                INTEGER
        }

   phivNonBroadcastIndex OBJECT-TYPE
        SYNTAX InterfaceIndex
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The Non Broadcast line on which this entry's
            equivalence is effective.  This is the same value
            as the ifIndex."
        ::= { phivNonBroadcastEntry 1 }

   phivNonBroadcastController OBJECT-TYPE
        SYNTAX INTEGER {
            normal (1),
            loopback (2),
            other (3)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION



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            "This value represents the Physical Link hardware
            controller mode for the line device. The values
            for controller-mode are:

            NORMAL  For normal controller operating mode.

            LOOPBACK For software controllable loopback of the
            controller. On those devices that can support this
            mode, it causes all transmitted messages to be looped
            back from within the controller itself. This is
            accomplished without any manual intervention other
            than the setting of this parameter value.

            OTHER indicates function is not supported
            Note that these values are incremented by one compared to
            the standard DECnet values."
        ::= { phivNonBroadcastEntry 2 }

   phivNonBroadcastDuplex OBJECT-TYPE
        SYNTAX INTEGER {
            full (1),
            half (2)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the Physical Link hardware
            duplex mode of the line device. The possible modes
            are:

            FULL   Full-duplex
            HALF   Half-duplex

            Note that these values are incremented by one compared to
            the standard DECnet values."
        ::= { phivNonBroadcastEntry 3 }

   phivNonBroadcastClock OBJECT-TYPE
        SYNTAX INTEGER {
            external (1),
            internal (2),
            other (3)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents the Physical Link hardware clock
            mode for the line device. The values for clock-mode are:



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            INTERNAL For software controllable loopback use of
            the clock. On those devices that can support this
            mode, it causes the device to supply a clock signal
            such that a transmitted messages can be looped
            back from outside the device. This may require manual
            intervention other than the setting of this parameter
            value. For example, the operator may have to connect
            a loopback plug in place of the normal line.

            EXTERNAL For normal clock operating mode, where the
            clock signal is supplied externally to the controller.
            Note that these values are incremented by one compared to
            the standard DECnet values."
        ::= { phivNonBroadcastEntry 4 }

   phivNonBroadcastRetransmitTimer OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value represents number of milliseconds before
            the Data Link retransmits a block on the line. On
            half-duplex lines, this parameter is the select timer."
        DEFVAL { 3000 }
        ::= { phivNonBroadcastEntry 5 }

   -- Area Parameters Group

   -- The implementation of the Area Parameters Group is mandatory
   -- for all systems which implement level 2 routing.

   phivAreaTable OBJECT-TYPE
        SYNTAX SEQUENCE OF PhivAreaEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "Table of information kept on all areas known to
            this unit."
        ::= { area 1 }

   phivAreaEntry OBJECT-TYPE
        SYNTAX PhivAreaEntry
        ACCESS not-accessible
        STATUS mandatory
        DESCRIPTION
            "The area routing information."
        INDEX  { phivAreaNum }



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        ::= { phivAreaTable 1 }

   PhivAreaEntry ::=
        SEQUENCE {
            phivAreaNum
                INTEGER,
            phivAreaState
                INTEGER,
            phivAreaCost
                Gauge,
            phivAreaHops
                INTEGER,
            phivAreaNextNode
                PhivAddr,
            phivAreaCircuitIndex
               INTEGER
        }

   phivAreaNum OBJECT-TYPE
        SYNTAX INTEGER (0..64)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value indicates the area number of this entry."
        ::= { phivAreaEntry 1 }

   phivAreaState OBJECT-TYPE
        SYNTAX INTEGER {
            reachable (4),
            unreachable (5)
        }
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "This value indicates the state of the area"
        ::= { phivAreaEntry 2 }

   phivAreaCost OBJECT-TYPE
        SYNTAX Gauge
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The total cost over the current path to the
             destination area. Cost is a value associated with
             using a circuit. Routing routes messages (data)
             along the path between 2 areas with the smallest
             cost."
        ::= { phivAreaEntry 3 }



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   phivAreaHops OBJECT-TYPE
        SYNTAX INTEGER (0..255)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The number of hops to a destination area. A hop is
            the routing value representing the logical distance
            between two areas in network."
        ::= { phivAreaEntry 4 }

   phivAreaNextNode OBJECT-TYPE
        SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "The next node on the circuit used to get to the
            area under scrutiny."
        ::= { phivAreaEntry 5 }

   phivAreaCircuitIndex OBJECT-TYPE
        SYNTAX INTEGER (1..65535)
        ACCESS read-only
        STATUS mandatory
        DESCRIPTION
            "A unique index value for each known circuit."
        ::= { phivAreaEntry 6 }

   -- Additional Area Parameters

   phivAreaMaxCost OBJECT-TYPE
        SYNTAX INTEGER (1..1022)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum total path cost
            allowed from the executor to any other level 2 routing
            node. The AREA MAXIMUM COST number is decimal in the
            range 1-1022. This parameter is only applicable if
            the executor node is of type AREA."
        ::= { area 2 }

   phivAreaMaxHops OBJECT-TYPE
        SYNTAX INTEGER (1..30)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the maximum number of routing hops



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            allowable from the executor to any other level 2
            routing node.  This parameter is only applicable if the
            executor node is of type AREA."
        ::= { area 3 }

   phivRouteMaxArea OBJECT-TYPE
        SYNTAX INTEGER (1..63)
        ACCESS read-write
        STATUS mandatory
        DESCRIPTION
            "This value represents the largest area number and,
            therefore, number of areas that can be known about
            by the executor node's Routing. This parameter is only
            applicable if the executor node is of type AREA."
        ::= { area 4 }

          END

6.  Changes from RFC 1289

   Several changes have been made to this document.  These changes
   include:

   (1)  Ranges have been added on all PhivCounter types to remove
        ambiguity which might otherwise have occurred.

   (2)  Made clear that all indexes start with 1 and count up.

   (3)  Spelling and typographic changes.

   (4)  Changes to improve consistency with other documents including
        the removal of subranging within definitions of sequences
        defining table entries.

   (5)  Updated compliance text to conform to current practice.

   (6)  Fixed discrepancy between description and range clause for
        phivControlMaxBuffs.

   (7)  Added a space that was missing between SYNTAX and INTEGER in the
        phivRouteType object.

   (8)  Both phivRouteType and phivRouteSystemAddr have been made
        obsolete.  They have been replaced with phivRouteRoutingType
        and phivRouteSystemAddress which are both read-write objects.






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   (9)  A new Adjacency table has been added as adjacency 2.  This
        table is identical to the original except that
        phivAdjExecListenTimer was not carried into the new version.
        The existing Adjacency table and all objects in it have been
        made obsolete.  The index to the new table is
        phivAdjNodeCircuitIndex and phivAdjAddr.

   (10) Objects phivCountersCountDataBlocksRecd and
        phivCountersCountDataBlocksSent have both been made obsolete
        since the DESCRIPTION information overlapped with the
        phivCountersCountDataBlksRecd and
        phivCountersCountDataBlksSent objects which have been
        retained.

   (11) The following groups have been moved from mandatory to
        optional status: Session, End, DDCMP, DDCMP Multipoint
        Circuit Control, Counters, and Non Broadcast Line.

7.  Acknowledgements

   This document is the result of work undertaken the by DECnet Phase IV
   MIB working group. In addition, the special contributions and
   comments of the following members are also acknowledged:

         Chris Chiotasso, Sparticus

         Steven Hunter, National Energy Research Supercomputer Center,
         Lawrence Livermore National Laboratory

8.  References

   [1] Cerf, V., "IAB Recommendations for the Development of Internet
       Network Management Standards", RFC 1052, NRI, April 1988.

   [2] Rose M., and K. McCloghrie, "Structure and Identification of
       Management Information for TCP/IP-based internets", STD 16, RFC
       1155, Performance Systems International, Hughes LAN Systems, May
       1990.

   [3] McCloghrie K., and M. Rose, Editors, "Management Information Base
       for Network Management of TCP/IP-based internets MIB-II", STD 17,
       RFC 1213, Hughes LAN Systems, Performance Systems International,
       March 1991.

   [4] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
       Network Management Protocol", STD 15, RFC 1157, SNMP Research,
       Performance Systems International, Performance Systems
       International, MIT Laboratory for Computer Science, May 1990.



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   [5] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
       STD 16, RFC 1212, Performance Systems International, Hughes LAN
       Systems, March 1991.

   [6] Cook, J., Editor, "Definitions of Managed Objects for the
       Ethernet-like Interface Types", RFC 1284, Chipcom Corporation,
       December 1991.

   [7] Digital Equipment Corporation, "DECnet-ULTRIX NCP Command
       Reference", Digital Equipment Corporation, Maynard,
       Massachusetts.

   [8] Digital Equipment Corporation, "DECnet-ULTRIX USE Guide", Digital
       Equipment Corporation, Maynard, Massachusetts.

   [9] Digital Equipment Corporation, "DECnet DIGITAL Network
       Architecture, Network Management Functional Specification",
       Version 4.0.0. Digital Equipment Corporation, Maynard,
       Massachusetts, July 1983.

  [10] Digital Equipment Corporation, "DECnet DIGITAL Network
       Architecture, Routing Layer Functional Specification", Version
       2.0.0.  Digital Equipment Corporation, Maynard, Massachusetts,
       May 1983.

9.  Security Considerations

   Security issues are not discussed in this memo.

10.  Author's Address

   Jon Saperia
   Digital Equipment Corporation
   153 Taylor Street
   M/S TAY2-2/B5
   Littleton, MA 01460

   Phone: +1 508-952-3171
   EMail: saperia@tay.dec.com












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