





Network Working Group                                         J. Saperia
Request for Comments: 1289                 Digital Equipment Corporation
                                                           December 1991


                     DECnet Phase IV MIB Extensions

Status of this Memo

   This memo is an extension to the SNMP MIB.  This RFC specifies an IAB
   standards track protocol for the Internet community, and requests
   discussion and suggestions for improvements.  Please refer to the
   current edition of the "IAB Official Protocol Standards" for the
   standardization state and status of this protocol.  Distribution of
   this memo is unlimited.

Table of Contents

   Abstract..........................................................  1
   1. Introduction...................................................  1
   2. Selected Objects...............................................  2
   3. Objects........................................................  3
   3.1 Format of Definitions.........................................  3
   3.2 Textual Conventions...........................................  4
   4. Object Definitions.............................................  4
   5. Acknowledgements............................................... 63
   6. References..................................................... 63
   7. Security Considerations........................................ 64
   8. Author's Address............................................... 64

Abstract

   This memo defines a set of DECnet Phase IV extensions that have been
   created for the Internet MIB.  When used in conjunction with the
   structure of management information (RFC 1155), the management
   information base for network management of TCP/IP-based internets
   (RFC 1213) and the Simple Network Management Protocol (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).

1.  Introduction

   With the adoption of The Simple Network Management Protocol (RFC
   1157), the management information base for network management of
   TCP/IP-based internets (RFC 1213), and the structure of management
   information (RFC 1155), by the Internet, and a large number of vendor



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   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.  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:

     o  System Group

     o  Network Management Group

     o  Session Group

     o  End Group

     o  Routing Group

     o  Circuit Group

     o  DDCMP Group

     o  DDCMP Multipoint Control Group

     o  Ethernet Group

     o  Counters Group




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     o  Adjacency Group

     o  Line Group

     o  Non Broadcast Line Group

     o  Area Group

   An effort has also been made to preserve the original syntax of the
   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.

3.  Objects

   All objects in this memo are described using the standard Internet
   SMI and BER of RFC 1155. A complete description of an object will
   include the name, syntax and encoding. Just as with objects supported
   in the MIB (RFC 1156), 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 RFC 1156 -
   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 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.

3.1  Format of Definitions

   An object in this memo is specified by five fields of information:
   Object, Syntax, Definition, Access, and Status.

   The OBJECT is a textual name (OBJECT DESCRIPTOR) for that object type
   combined with an administratively obtained OBJECT IDENTIFIER.

   SYNTAX: For each object type, its abstract syntax is presented using
   the ASN.1 specified in RFC 1155.



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   DEFINITION: A general description of the object type. Its original
   purpose in the DECnet Phase IV environment is given so that all
   implementers and users will consistently interpret the information
   contained in each object type. Changes in format to make the object
   consistent with RFC 1155 are also noted.

   ACCESS: The standard access keywords supported in RFC 1156 are used.
   The keywords used in this MIB are: read-only, read-write, and, not-
   accessible.

   STATUS: The status field is used to describe with a single keyword
   whether the object type is mandatory or optional. Status keywords of
   obsolete and deprecated are not used in this memo since this is the
   first version of the DECnet Phase IV MIB.

3.2  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 4.0 (Object Definitions).

4.  Object Definitions

            RFC1289-phivMIB

            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



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       -- 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 restared, or they are reset to zero by the user
       -- or management software.

       -- 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



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                            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)."
            ::= { 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 mandatory for
       -- all systems that implement session layer communications.





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       phivSessionSystemName OBJECT-TYPE
           SYNTAX DisplayString ( SIZE (0..6) )
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "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 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 0
               indicates no timer is running."
           ::= { session 3 }

       -- End Communication Layer Group

       -- The implementation of the End Communication Layer Group is
       -- mandatory for all systems that implement end layer
       -- communications.

       -- Remote State Table




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       phivEndRemoteTable OBJECT-TYPE
           SYNTAX SEQUENCE OF PhivEndRemoteEntry
           ACCESS not-accessible
           STATUS mandatory
           DESCRIPTION
               "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 (0..65535)
            }
        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)



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           }
           ACCESS read-write
           STATUS mandatory
           DESCRIPTION
               "This represents the operational state of the remote node
               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
           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



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               delay in seconds to the destination node. This
               parameter is kept on a remote node basis."
           ::= { phivEndRemoteEntry 5 }

       -- End System Counter Table

       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 (0..65535),
               phivEndCountUsrBytesRec
                   PhivCounter,
               phivEndCountUsrBytesSent
                   PhivCounter,
               phivEndUCountUsrMessRec
                   PhivCounter,
               phivEndCountUsrMessSent
                   PhivCounter,
               phivEndCountTotalBytesRec
                   PhivCounter,
               phivEndCountTotalBytesSent
                   PhivCounter,
               phivEndCountTotalMessRec
                   PhivCounter,
               phivEndCountTotalMessSent



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                   PhivCounter,
               phivEndCountConnectsRecd
                   PhivCounter (0..65535),
               phivEndCountConnectsSent
                   PhivCounter (0..65535),
               phivEndCountReponseTimeouts
                   PhivCounter (0..65535),
               phivEndCountRecdConnectResErrs
                   PhivCounter (0..65535)
           }
       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
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of user bytes received from the target host."
           ::= { phivEndCountEntry 3 }

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





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       phivEndUCountUsrMessRec OBJECT-TYPE
            SYNTAX PhivCounter
            ACCESS read-only
            STATUS mandatory
            DESCRIPTION
                "Number of user messages received from the target host."
            ::= { phivEndCountEntry 5 }

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

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

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

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

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




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



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           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 }

       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.



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               If no activity occurs within the minimum number of
               seconds, End Communication generates artificial
               traffic to test the link (End Communication
               specification)."
           ::= { end 8 }

       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)



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           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
                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 }





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       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
               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



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               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 }

       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 }




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

       phivRouteSegBuffSize OBJECT-TYPE
           SYNTAX INTEGER
           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
           SYNTAXINTEGER {
               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 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



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               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 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 }





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

       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



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                   PhivAddr,
               phivLevel1RouteCircuitIndex
                   INTEGER,
               phivLevel1RouteCost
                   INTEGER (0..65535),
               phivLevel1RouteHops
                   INTEGER (0..127),
               phivLevel1RouteNextNode
                   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
           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



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               "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
           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
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "DECnet Phase IV node address."
           ::= { routing 24 }








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       -- 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 }

       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 (0..65535),
               phivCircuitCommonType
                   INTEGER,
               phivCircuitService
                   INTEGER,
               phivCircuitExecCost
                   INTEGER (1..25),
               phivCircuitExecHelloTimer



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                   INTEGER (1..8191)
           }
        phivCircuitIndex OBJECT-TYPE
           SYNTAX INTEGER
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "A unique index value for each known circuit."
           ::= { phivCircuitParametersEntry 1 }

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



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               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
           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



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               "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
           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



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

       PhivCircuitCountEntry ::=
           SEQUENCE {
               phivCircuitCountSecLastZeroed
                   PhivCounter (0..65535),
               phivCircuitCountTermPacketsRecd
                   PhivCounter,
               phivCircuitCountOriginPackSent
                   PhivCounter,
               phivCircuitCountTermCongLoss
                   PhivCounter (0..65535),
               phivCircuitCountCorruptLoss
                   PhivCounter (0..255),
               phivCircuitCountTransitPksRecd
                   PhivCounter,
               phivCircuitCountTransitPkSent
                   PhivCounter,
               phivCircuitCountTransitCongestLoss
                   PhivCounter (0..65535),
               phivCircuitCountCircuitDown
                   PhivCounter (0..255),
               phivCircuitCountInitFailure
                   PhivCounter (0..255),
               phivCircuitCountAdjDown
                   PhivCounter,



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               phivCircuitCountPeakAdj
                   PhivCounter,
               phivCircuitCountBytesRecd
                   PhivCounter,
               phivCircuitCountBytesSent
                   PhivCounter,
               phivCircuitCountDataBlocksRecd
                   PhivCounter (0..65535),
               phivCircuitCountDataBlocksSent
                   PhivCounter,
               phivCircuitCountUsrBuffUnav
                   PhivCounter (0..65535)
           }
       phivCircuitCountSecLastZeroed  OBJECT-TYPE
           SYNTAX PhivCounter (0..65535)
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of seconds since the circuit counters for this
               circuit were last zeroed."
           ::= { phivCircuitCountEntry 1 }

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

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

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





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       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
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of Transit packets received on this circuit."
           ::= { phivCircuitCountEntry 6 }

       phivCircuitCountTransitPkSent OBJECT-TYPE
           SYNTAX PhivCounter
           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 }




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       phivCircuitCountAdjDown OBJECT-TYPE
           SYNTAX PhivCounter
           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."
           ::= { phivCircuitCountEntry 11 }

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

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

       phivCircuitCountDataBlocksRecd OBJECT-TYPE
           SYNTAX PhivCounter
           ACCESS read-only
           STATUS mandatory



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           DESCRIPTION
               "Number of data blocks received on this circuit."
           ::= { phivCircuitCountEntry 15 }

       phivCircuitCountDataBlocksSent OBJECT-TYPE
           SYNTAX PhivCounter
           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
               "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 mandatory for
       -- all systems which support DDCMP circuits.



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

       PhivDDCMPCircuitParametersEntry ::=
           SEQUENCE {
               phivDDCMPCircuitIndex
                   INTEGER,
               phivDDCMPCircuitAdjNodeAddr
                   INTEGER (0..65535),
               phivDDCMPCircuitTributary
                   INTEGER (0..255)
           }
       phivDDCMPCircuitIndex OBJECT-TYPE
           SYNTAX INTEGER
           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 }





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       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
               "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 (0..255),
               phivDDCMPCircuitErrorsOutbd
                   PhivCounter (0..255),
               phivDDCMPCircuitRmteReplyTimeouts
                   PhivCounter (0..255),
               phivDDCMPCircuitLocalReplyTimeouts
                   PhivCounter (0..255),
               phivDDCMPCircuitRmteBuffErrors
                   PhivCounter (0..255),
               phivDDCMPCircuitLocalBuffErrors
                   PhivCounter (0..255),
               phivDDCMPCircuitSelectIntervalsElap
                   PhivCounter (0..65535),
               phivDDCMPCircuitSelectTimeouts
                   PhivCounter (0..255)
           }



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       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 }

       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 }




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       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 }

       -- 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
                   INTEGER,
               phivDDCMPLineCountDataErrsIn
                   PhivCounter (0..255),
               phivDDCMPLineCountRmteStationErrs
                   PhivCounter (0..255),
               phivDDCMPLineCountLocalStationErrs
                   PhivCounter (0..255)
           }





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       phivDDCMPLineCountIndex OBJECT-TYPE
           SYNTAX INTEGER
           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
           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 mandatory for all systems which support DDCMP
       -- multipoint control circuits.

       phivControlSchedTimer OBJECT-TYPE
           SYNTAX INTEGER (50..65535)
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "This value represents the number of milliseconds



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               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
           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."



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           ::= { 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,
               phivControlBabbleTimer
                   INTEGER (1..65535),
               phivControlMaxBuffs
                   INTEGER (0..254),
               phivControlMaxTransmits
                   INTEGER (1..255),
               phivControlDyingBase
                   INTEGER (0..255),
               phivControlDyingIncrement
                   INTEGER (0..255),
               phivControlDeadThreshold
                   INTEGER (0..255),
               phivControlDyingThreshold
                   INTEGER (0..255),
               phivControlInactTreshold
                   INTEGER (0..255),
               phivControlPollingState
                   INTEGER,
               phivControlPollingSubState
                   INTEGER,
               phivControlTransTimer
                   INTEGER (0..65535)
           }
       phivControlCircuitIndex OBJECT-TYPE
           SYNTAX INTEGER
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "A unique index value for each known multirpoint
               control circuit.
                This is the same value as phivCircuitIndex."
           ::= { phivControlParametersEntry 1 }



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       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 (0..254)
           ACCESS read-write
           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 }




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       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
           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 }




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       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:

               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 }




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       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.

       -- 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 (0..255),
               phivEthRouterPri
                   INTEGER (0..127),
               phivEthHardwareAddr
                   OCTET STRING



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            }
       phivEthLinkIndex OBJECT-TYPE
           SYNTAX INTEGER
           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
           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



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               the DECnet Software.  This value is not the same as
               ifPhysAddress."
           ::= { phivEthLinkParametersEntry 5 }

       -- Counters Group

       -- The implementation of the Counters Group is mandatory for
       -- systems which only support DECnet style locking counters.

       -- Counters Table

       phivCountersCountTable OBJECT-TYPE
           SYNTAX SEQUENCE OF PhivCountersCountEntry
           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
                   INTEGER,
               phivCountersCountBytesRecd
                   PhivCounter,
               phivCountersCountBytesSent
                   PhivCounter,
               phivCountersCountDataBlocksRecd
                   PhivCounter,
               phivCountersCountDataBlocksSent
                   PhivCounter,
               phivCountersCountEthUsrBuffUnav
                   PhivCounter (0..65535),
               phivCountersCountMcastBytesRecd
                   PhivCounter,
               phivCountersCountDataBlksRecd
                   PhivCounter,
               phivCountersCountDataBlksSent



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                   PhivCounter,
               phivCountersCountMcastBlksRecd
                   PhivCounter,
               phivCountersCountBlksSentDef
                   PhivCounter,
               phivCountersCountBlksSentSingleCol
                   PhivCounter,
               phivCountersCountBlksSentMultCol
                   PhivCounter,
               phivCountersCountSendFailure
                   PhivCounter,
               phivCountersCountCollDetectFailure
                   PhivCounter (0..65535),
               phivCountersCountReceiveFailure
                   PhivCounter (0..65535),
               phivCountersCountUnrecFrameDest
                   PhivCounter (0..65535),
               phivCountersCountDataOver
                   PhivCounter (0..65535),
               phivCountersCountSysBuffUnav
                   PhivCounter (0..65535),
               phivCountersCountUsrBuffUnav
                   PhivCounter (0..65535)
            }
       phivCountersIndex OBJECT-TYPE
           SYNTAX INTEGER
           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
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of bytes received over this link."
           ::= { phivCountersCountEntry 2 }

       phivCountersCountBytesSent OBJECT-TYPE
           SYNTAX PhivCounter
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of bytes sent over this link."



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           ::= { phivCountersCountEntry 3 }

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

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

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

       phivCountersCountDataBlksSent OBJECT-TYPE
           SYNTAX PhivCounter
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION



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               "Number of data blocks sent over this link."
           ::= { phivCountersCountEntry 9 }

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

       phivCountersCountBlksSentDef OBJECT-TYPE
           SYNTAX PhivCounter
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of blocks sent, initially deferred over this
               link."
           ::= { phivCountersCountEntry 11 }

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

       phivCountersCountBlksSentMultCol OBJECT-TYPE
           SYNTAX PhivCounter
           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



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           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."
           ::= { 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 }





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       -- Adjacency Group

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

       phivAdjTable OBJECT-TYPE
           SYNTAX SEQUENCE OF PhivAdjEntry
           ACCESS not-accessible
           STATUS mandatory
           DESCRIPTION
               "The Adjacency Table."
           ::= { adjacency 1 }

       phivAdjEntry OBJECT-TYPE
           SYNTAX PhivAdjEntry
           ACCESS not-accessible
           STATUS mandatory
           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 mandatory



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           DESCRIPTION
               "A unique index value for each known circuit."
           ::= { phivAdjEntry 1 }

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

       phivAdjBlockSize 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."
           ::= { phivAdjEntry 3 }

       phivAdjListenTimer OBJECT-TYPE
           SYNTAX INTEGER (1..65535)
           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."
           ::= { phivAdjEntry 4 }

       phivAdjCircuitEtherServPhysAddr 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."
           ::= { phivAdjEntry 5 }




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       phivAdjType 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)"
           ::= { 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 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 (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,



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               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."
           ::= { phivAdjEntry 7 }

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

       phivAdjExecListenTimer OBJECT-TYPE
           SYNTAX INTEGER (1..65535)
           ACCESS read-only
           STATUS mandatory
           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 }

       -- 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 }



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       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
                   INTEGER,
               phivLineName
                   DisplayString,
               phivLineState
                   INTEGER,
               phivLineSubstate
                   INTEGER,
               phivLineService
                   INTEGER,
               phivLineDevice
                   DisplayString,
               phivLineReceiveBuffs
                   INTEGER (0..65535),
               phivLineProtocol
                   INTEGER,
               phivLineServiceTimer
                   INTEGER (1..65535),
               phivLineMaxBlock
                   INTEGER (1..65535)
           }

       phivLineIndex OBJECT-TYPE
           SYNTAX INTEGER
           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



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               "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
           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),



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                 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),
               ddcmp-control (2),
               ddcmp-tributary (3),
               reserved (4),
               ddcmp-dmc (5),
               lapb (6),
               ethernet (7),
               ci (8),
               qp2 (9),
               other (14),
               fddi (15)
           }
           ACCESS read-only



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           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
       -- mandatory for all systems which implement non broadcast
       -- lines.

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



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           INDEX  { phivNonBroadcastIndex }
           ::= { phivNonBroadcastTable 1 }

       PhivNonBroadcastEntry ::=
           SEQUENCE {
               phivNonBroadcastIndex
                   INTEGER,
               phivNonBroadcastController
                   INTEGER,
               phivNonBroadcastDuplex
                   INTEGER,
               phivNonBroadcastClock
                   INTEGER,
               phivNonBroadcastRetransmitTimer
                   INTEGER (1..65535)
           }
       phivNonBroadcastIndex OBJECT-TYPE
           SYNTAX INTEGER
           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
               "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.




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        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:

               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



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               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 }
           ::= { phivAreaTable 1 }

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



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                 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 }

       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
           ACCESS read-only



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           STATUS mandatory
           DESCRIPTION
               "The next node on the circuit used to get to the
               area under scrutiny."
           ::= { phivAreaEntry 5 }

       phivAreaCircuitIndex OBJECT-TYPE
           SYNTAX INTEGER
           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
               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."



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           ::= { area 4 }

       END

5.  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

6.  References

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

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

   McCloghrie K., and M. Rose, "Management Information Base for Network
   Management of TCP/IP-based internets", RFC 1156, Hughes LAN Systems,
   Performance Systems International, May 1990.

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

   McCloghrie K., and M. Rose, Editors, "Management Information Base for
   Network Management of TCP/IP-based internets", RFC 1213, Performance
   Systems International, March 1991.

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

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

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

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



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

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

Security Considerations

   Security issues are not discussed in this memo.

Author's Address

   Jon Saperia
   Digital Equipment Corporation
   40 Old Bolton Road
   Stow, Massachusetts 01775-1215

   Phone: 508-496-8333

   EMail: saperia@enet.dec.com





























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