path: root/doc/rfc/rfc1238.txt

Network Working Group                                          G. Satz
Request for Comments: 1238                         cisco Systems, Inc.
Obsoletes: RFC 1162                                          June 1991


                                CLNS MIB
                              for use with
               Connectionless Network Protocol (ISO 8473)
                                  and
              End System to Intermediate System (ISO 9542)

Status of this Memo

   This memo defines an experimental portion of the Management
   Information Base (MIB) for use with network management protocols in
   TCP/IP-based internets.  This is an Experimental Protocol for the
   Internet community.  Discussion and suggestions for improvement are
   requested.  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

   1. The Network Management Framework.......................    1
   2. Objects ...............................................    2
   2.1 Format of Definitions ................................    2
   3. Overview ..............................................    2
   3.1 Textual Conventions ..................................    3
   3.2 Changes from RFC 1162 ................................    3
   4. Definitions ...........................................    4
   4.1 Textual Conventions ..................................    4
   4.2 Groups in the CLNS MIB ...............................    4
   4.3 The CLNP Group .......................................    4
   4.4 The CLNP Error Group .................................   21
   4.5 The ES-IS Group ......................................   30
   5. References ............................................   31
   6. Security Considerations ...............................   32
   7. Author's Address.......................................   32

1.  The Network Management Framework

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

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



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      RFC 1156 which defines MIB-I, the core set of managed objects for
      the Internet suite of protocols.  RFC 1213, defines MIB-II, an
      evolution of MIB-I based on implementation experience and new
      operational requirements.

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

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

2.  Objects

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the subset of Abstract Syntax Notation One (ASN.1) [7]
   defined in the SMI.  In particular, each object has a name, a syntax,
   and an encoding.  The name is an object identifier, an
   administratively assigned name, which specifies an object type.  The
   object type together with an object instance serves to uniquely
   identify a specific instantiation of the object.  For human
   convenience, we often use a textual string, termed the OBJECT
   DESCRIPTOR, to also refer to the object type.

   The syntax of an object type defines the abstract data structure
   corresponding to that object type.  The ASN.1 language is used for
   this purpose.  However, the SMI [3] purposely restricts the ASN.1
   constructs which may be used.  These restrictions are explicitly made
   for simplicity.

   The encoding of an object type is simply how that object type is
   represented using the object type's syntax.  Implicitly tied to the
   notion of an object type's syntax and encoding is how the object type
   is represented when being transmitted on the network.

   The SMI specifies the use of the basic encoding rules of ASN.1 [8],
   subject to the additional requirements imposed by the SNMP.

2.1.  Format of Definitions

   Section 4 contains the specification of all object types contained in
   this MIB module.  The object types are defined using the conventions
   defined in the SMI, as amended by the extensions specified in [9].

3.  Overview

   The objects defined in this MIB module are be used when the ISO
   Connectionless-mode Network Protocol [10] and End System to



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   Intermediate System [11] protocols are present.  No assumptions are
   made as to what underlying protocol is being used to carry the SNMP.

   This memo uses the string encoding of [12] to textually describe OSI
   addresses.

3.1.  Textual Conventions

   A new data type is introduced as a textual convention in this MIB
   document.  This textual conventions enhance the readability of the
   specification and can ease comparison with other specifications if
   appropriate.  It should be noted that the introduction of this
   textual convention has no effect on either the syntax nor the
   semantics of any managed objects.  The use of this is merely an
   artifact of the explanatory method used.  Objects defined in terms of
   this methods are always encoded by means of the rules that define the
   primitive type.  Hence, no changes to the SMI or the SNMP are
   necessary to accommodate this textual convention which are adopted
   merely for the convenience of readers and writers in pursuit of the
   elusive goal of clear, concise, and unambiguous MIB documents.

   The ASN.1 type ClnpAddress is used to denote an OSI address.  This
   consists of a string of octets.  The first octet of the string
   contains a binary value in the range of 0..20, and indicates the the
   length in octets of the NSAP.  Following the first octet, is the
   NSAP, expressed in concrete binary notation, starting with the most
   significant octet.  A zero- length NSAP is used as a "special"
   address meaning "the default NSAP" (analogous to the IP address of
   0.0.0.0).  Such an NSAP is encoded as a single octet, containing the
   value 0.  All other NSAPs are encoded in at least 4 octets.

3.2.  Changes from RFC 1162

   Features of this MIB include:

      (1)  The managed objects in this document have been defined
           using the conventions defined in the Internet-standard
           SMI, as amended by the extensions specified in [9].  It
           must be emphasized that definitions made using these
           extensions are semantically identically to those in RFC
           1162.

      (2)  The PhysAddress textual convention from MIB-II has been
           introduced to represent media addresses.

      (3)  The clnpRoutingDiscards, clnpRouteMetric5, and
           clnpRouteInfo objects have been defined.




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      (4)  The ClnpAddress type was mistakenly given a tag in RFC
           1162.  This error has been corrected.

4.  Definitions

          CLNS-MIB DEFINITIONS ::= BEGIN

          IMPORTS
                  experimental, Counter
                          FROM RFC1155-SMI
                  PhysAddress
                          FROM RFC-1213
                  OBJECT-TYPE
                          FROM RFC-1212;

          --  This MIB module uses the extended OBJECT-TYPE macro as
          --  defined in [9]


          --  the CLNS MIB module

          clns    OBJECT IDENTIFIER ::= { experimental 1 }


          -- textual conventions

          ClnpAddress ::=
                  OCTET STRING (SIZE (1..21))
          -- This data type is used to model NSAP addresses.


          -- groups in the CLNS MIB

          clnp    OBJECT IDENTIFIER ::=   { clns 1 }

          error   OBJECT IDENTIFIER ::=   { clns 2 }

          echo    OBJECT IDENTIFIER ::=   { clns 3 }

          es-is   OBJECT IDENTIFIER ::=   { clns 4 }


          -- the CLNP group

          -- Implementation of this group is recommended for all
          -- systems which implement the CLNP.





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          clnpForwarding OBJECT-TYPE
              SYNTAX  INTEGER {
                          is(1),   -- entity is an intermediate system

                                   -- entity is an end system and does
                          es(2)   -- not forward PDUs
                      }
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The indication of whether this entity is active
                      as an intermediate or end system.  Only
                      intermediate systems will forward PDUs onward that
                      are not addressed to them."
               ::= { clnp 1 }

          clnpDefaultLifeTime OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The default value inserted into the Lifetime
                      field of the CLNP PDU header of PDUs sourced by
                      this entity."
              ::= { clnp 2 }

          clnpInReceives OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The total number of input PDUs received from all
                      connected network interfaces running CLNP,
                      including errors."
              ::= { clnp 3 }

          clnpInHdrErrors OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of input PDUs discarded due to errors
                      in the CLNP header, including bad checksums,
                      version mismatch, lifetime exceeded, errors
                      discovered in processing options, etc."
              ::= { clnp 4 }





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          clnpInAddrErrors OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of input PDUs discarded because the
                      NSAP address in the CLNP header's destination
                      field was not a valid NSAP to be received at this
                      entity.  This count includes addresses not
                      understood.  For end systems, this is a count of
                      PDUs which arrived with a destination NSAP which
                      was not local."
              ::= { clnp 5 }

          clnpForwPDUs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of input PDUs for which this entity
                      was not the final destination and which an attempt
                      was made to forward them onward."
              ::= { clnp 6 }

          clnpInUnknownNLPs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of locally-addressed PDUs successfully
                      received but discarded because the network layer
                      protocol was unknown or unsupported (e.g., not
                      CLNP or ES-IS)."
              ::= { clnp 7 }

          clnpInUnknownULPs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of locally-addressed PDUs successfully
                      received but discarded because the upper layer
                      protocol was unknown or unsupported (e.g., not
                      TP4)."
              ::= { clnp 8 }

          clnpInDiscards OBJECT-TYPE
              SYNTAX  Counter



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              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of input CLNP PDUs for which no
                      problems were encountered to prevent their
                      continued processing, but were discarded (e.g.,
                      for lack of buffer space).  Note that this counter
                      does not include any PDUs discarded while awaiting
                      re-assembly."
              ::= { clnp 9 }

          clnpInDelivers OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The total number of input PDUs successfully
                      delivered to the CLNS transport user."
              ::= { clnp 10 }

          clnpOutRequests OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The total number of CLNP PDUs which local CLNS
                      user protocols supplied to CLNP for transmission
                      requests.  This counter does not include any PDUs
                      counted in clnpForwPDUs."
              ::= { clnp 11 }

          clnpOutDiscards OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of output CLNP PDUs for which no other
                      problem was encountered to prevent their
                      transmission but were discarded (e.g., for lack of
                      buffer space).  Note this counter includes PDUs
                      counted in clnpForwPDUs."
              ::= { clnp 12 }

          clnpOutNoRoutes OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION



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                      "The number of CLNP PDUs discarded because no
                      route could be found to transmit them to their
                      destination.  This counter includes any PDUs
                      counted in clnpForwPDUs."
              ::= { clnp 13 }

          clnpReasmTimeout OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The maximum number of seconds which received
                      segments are held while they are awaiting
                      reassembly at this entity."
              ::= { clnp 14 }

          clnpReasmReqds OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP segments received which needed
                      to be reassembled at this entity."
              ::= { clnp 15 }

          clnpReasmOKs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP PDUs successfully re-assembled
                      at this entity."
              ::= { clnp 16 }

          clnpReasmFails OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of failures detected by the CLNP
                      reassembly algorithm (for any reason: timed out,
                      buffer size, etc)."
              ::= { clnp 17 }

          clnpSegOKs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory



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              DESCRIPTION
                      "The number of CLNP PDUs that have been
                      successfully segmented at this entity."
              ::= { clnp 18 }

          clnpSegFails OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP PDUs that have been discarded
                      because they needed to be fragmented at this
                      entity but could not."
              ::= { clnp 19 }

          clnpSegCreates OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP PDU segments that have been
                      generated as a result of segmentation at this
                      entity."
              ::= { clnp 20 }

          clnpInOpts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP PDU segments that have been
                      input with options at this entity."
              ::= { clnp 25 }

          clnpOutOpts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP PDU segments that have been
                      generated with options by this entity."
              ::= { clnp 26 }

          clnpRoutingDiscards OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION



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                      "The number of routing entries which were chosen
                      to be discarded even though they are valid.  One
                      possible reason for discarding such an entry could
                      be to free-up buffer space for other routing
                      entries."
              ::= { clnp 27 }


          -- the CLNP Interfaces table

          -- The CLNP interfaces table contains information on the
          -- entity's interfaces which are running the CLNP.

          clnpAddrTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF ClnpAddrEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The table of addressing information relevant to
                      this entity's CLNP addresses.  "
              ::= { clnp 21 }

          clnpAddrEntry OBJECT-TYPE
              SYNTAX  ClnpAddrEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The addressing information for one of this
                      entity's CLNP addresses."
              INDEX   { clnpAdEntAddr }
              ::= { clnpAddrTable 1 }

          ClnpAddrEntry ::=
              SEQUENCE {
                  clnpAdEntAddr
                      ClnpAddress,
                  clnpAdEntIfIndex
                      INTEGER,
                  clnpAdEntReasmMaxSize
                      INTEGER (0..65535)
              }

          clnpAdEntAddr OBJECT-TYPE
              SYNTAX  ClnpAddress
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The CLNP address to which this entry's addressing



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                      information pertains."
              ::= { clnpAddrEntry 1 }

          clnpAdEntIfIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The index value which uniquely identifies the
                      interface to which this entry is applicable.  The
                      interface identified by a particular value of this
                      index is the same interface as identified by the
                      same value of ifIndex."
              ::= { clnpAddrEntry 2 }

          clnpAdEntReasmMaxSize OBJECT-TYPE
              SYNTAX  INTEGER (0..65535)
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The size of the largest CLNP PDU which this
                      entity can re-assemble from incoming CLNP
                      segmented PDUs received on this interface."
              ::= { clnpAddrEntry 3 }


          -- The CLNP Routing table

          -- The CLNP routing table contains an entry for each route
          -- known to the entity.

          clnpRoutingTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF ClnpRouteEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "This entity's CLNP routing table."
              ::= { clnp 22 }

          clnpRouteEntry OBJECT-TYPE
              SYNTAX  ClnpRouteEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "A route to a particular destination."
              INDEX   { clnpRouteDest }
              ::= { clnpRoutingTable 1 }




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          ClnpRouteEntry ::=
              SEQUENCE {
                  clnpRouteDest
                      ClnpAddress,
                  clnpRouteIfIndex
                      INTEGER,
                  clnpRouteMetric1
                      INTEGER,
                  clnpRouteMetric2
                      INTEGER,
                  clnpRouteMetric3
                      INTEGER,
                  clnpRouteMetric4
                      INTEGER,
                  clnpRouteNextHop
                      ClnpAddress,
                  clnpRouteType
                      INTEGER,
                  clnpRouteProto
                      INTEGER,
                  clnpRouteAge
                      INTEGER,
                  clnpRouteMetric5
                      INTEGER,
                  clnpRouteInfo
                      OBJECT IDENTIFIER
              }

          clnpRouteDest OBJECT-TYPE
              SYNTAX  ClnpAddress
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The destination CLNP address of this route."
              ::= { clnpRouteEntry 1 }

          clnpRouteIfIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The index value which uniquely identifies the
                      local interface through which the next hop of this
                      route should be reached.  The interface identified
                      by a particular value of this index is the same as
                      identified by the same value of ifIndex."
              ::= { clnpRouteEntry 2 }




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          clnpRouteMetric1 OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The primary routing metric for this route.  The
                      semantics of this metric are determined by the
                      routing-protocol specified in the route's
                      clnpRouteProto value.  If this metric is not used,
                      its value should be set to -1."
              ::= { clnpRouteEntry 3 }

          clnpRouteMetric2 OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "An alternate routing metric for this route.  The
                      semantics of this metric are determined by the
                      routing-protocol specified in the route's
                      clnpRouteProto value.  If this metric is not used,
                      its value should be set to -1."
              ::= { clnpRouteEntry 4 }

          clnpRouteMetric3 OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "An alternate routing metric for this route.  The
                      semantics of this metric are determined by the
                      routing-protocol specified in the route's
                      clnpRouteProto value.  If this metric is not used,
                      its value should be set to -1."
              ::= { clnpRouteEntry 5 }

          clnpRouteMetric4 OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "An alternate routing metric for this route.  The
                      semantics of this metric are determined by the
                      routing-protocol specified in the route's
                      clnpRouteProto value.  If this metric is not used,
                      its value should be set to -1."
              ::= { clnpRouteEntry 6 }




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          clnpRouteNextHop OBJECT-TYPE
              SYNTAX  ClnpAddress
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The CLNP address of the next hop of this route."
              ::= { clnpRouteEntry 7 }

          clnpRouteType OBJECT-TYPE
              SYNTAX  INTEGER {
                          other(1),      -- none of the following

                          invalid(2),    -- an invalidated route

                                         -- route to directly
                          direct(3),     -- connected (sub-)network

                                         -- route to a non-local
                          remote(4)      -- host/network/sub-network
                      }
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The type of route.

                      Setting this object to the value invalid(2) has
                      the effect of invaliding the corresponding entry
                      in the clnpRoutingTable.  That is, it effectively
                      dissasociates the destination identified with said
                      entry from the route identified with said entry.
                      It is an implementation-specific matter as to
                      whether the agent removes an invalidated entry
                      from the table.  Accordingly, management stations
                      must be prepared to receive tabular information
                      from agents that corresponds to entries not
                      currently in use.  Proper interpretation of such
                      entries requires examination of the relevant
                      clnpRouteType object."
              ::= { clnpRouteEntry 8 }

          clnpRouteProto OBJECT-TYPE
              SYNTAX  INTEGER {
                          other(1),     -- none of the following

                                        -- non-protocol information
                                        --   e.g., manually
                          local(2),     --   configured entries




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                                        -- set via a network
                          netmgmt(3),   --   management protocol

                                        -- similar to ipRouteProto but
                                        -- omits several IP-specific
                                        -- protocols

                          is-is(9),
                          ciscoIgrp(11),
                          bbnSpfIgp(12),
                          ospf(13),
                          bgp(14)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The routing mechanism via which this route was
                      learned.  Inclusion of values for gateway routing
                      protocols is not intended to imply that hosts
                      should support those protocols."
              ::= { clnpRouteEntry 9 }

          clnpRouteAge OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The number of seconds since this route was last
                      updated or otherwise determined to be correct.
                      Note that no semantics of `too old' can be implied
                      except through knowledge of the routing protocol
                      by which the route was learned."
              ::= { clnpRouteEntry 10 }

          clnpRouteMetric5 OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "An alternate routing metric for this route.  The
                      semantics of this metric are determined by the
                      routing-protocol specified in the route's
                      clnpRouteProto value.  If this metric is not used,
                      its value should be set to -1."
              ::= { clnpRouteEntry 11 }

          clnpRouteInfo OBJECT-TYPE
              SYNTAX  OBJECT IDENTIFIER



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              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "A reference to MIB definitions specific to the
                      particular routing protocol which is responsible
                      for this route, as determined by the value
                      specified in the route's clnpRouteProto value.  If
                      this information is not present, its value should
                      be set to the OBJECT IDENTIFIER { 0 0 }, which is
                      a syntatically valid object identifier, and any
                      conformant implementation of ASN.1 and BER must be
                      able to generate and recognize this value."
              ::= { clnpRouteEntry 12 }


          -- the CLNP Address Translation table

          -- The Address Translation tables contain the CLNP address
          -- to physical address equivalences.  Some interfaces do not
          -- use translation tables for determining address
          -- equivalences; if all interfaces are of this type, then the
          -- Address Translation table is empty, i.e., has zero
          -- entries.

          clnpNetToMediaTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF ClnpNetToMediaEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The CLNP Address Translation table used for
                      mapping from CLNP addresses to physical
                      addresses."
              ::= { clnp 23 }

          clnpNetToMediaEntry OBJECT-TYPE
              SYNTAX  ClnpNetToMediaEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "Each entry contains one CLNP address to
                      `physical' address equivalence."
              INDEX   { clnpNetToMediaIfIndex, clnpNetToMediaNetAddress }
              ::= { clnpNetToMediaTable 1 }

          ClnpNetToMediaEntry ::=
              SEQUENCE {
                  clnpNetToMediaIfIndex
                      INTEGER,



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                  clnpNetToMediaPhysAddress
                      PhysAddress,
                  clnpNetToMediaNetAddress
                      ClnpAddress,
                  clnpNetToMediaType
                      INTEGER,
                  clnpNetToMediaAge
                      INTEGER,
                  clnpNetToMediaHoldTime
                      INTEGER
              }

          clnpNetToMediaIfIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The interface 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
                      ifIndex."
              ::= { clnpNetToMediaEntry 1 }

          clnpNetToMediaPhysAddress OBJECT-TYPE
              SYNTAX  PhysAddress
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The media-dependent `physical' address."
              ::= { clnpNetToMediaEntry 2 }

          clnpNetToMediaNetAddress OBJECT-TYPE
              SYNTAX  ClnpAddress
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The CLNP address corresponding to the media-
                      dependent `physical' address."
              ::= { clnpNetToMediaEntry 3 }

          clnpNetToMediaType OBJECT-TYPE
              SYNTAX  INTEGER {
                          other(1),       -- none of the following
                          invalid(2),     -- an invalidated mapping
                          dynamic(3),
                          static(4)
                      }



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              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The type of mapping.

                      Setting this object to the value invalid(2) has
                      the effect of invalidating the corresponding entry
                      in the clnpNetToMediaTable.  That is, it
                      effectively dissassociates the interface
                      identified with said entry from the mapping
                      identified with said entry.  It is an
                      implementation-specific matter as to whether the
                      agent removes an invalidated entry from the table.
                      Accordingly, management stations must be prepared
                      to receive tabular information from agents that
                      corresponds to entries not currently in use.
                      Proper interpretation of such entries requires
                      examination of the relevant clnpNetToMediaType
                      object."
              ::= { clnpNetToMediaEntry 4 }

          clnpNetToMediaAge OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The number of seconds since this entry was last
                      updated or otherwise determined to be correct.
                      Note that no semantics of `too old' can be implied
                      except through knowledge of the type of entry."
              ::= { clnpNetToMediaEntry 5 }

          clnpNetToMediaHoldTime OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The time in seconds this entry will be valid.
                      Static entries should always report this field as
                      -1."
              ::= { clnpNetToMediaEntry 6 }

          clnpMediaToNetTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF ClnpMediaToNetEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The CLNP Address Translation table used for



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                      mapping from physical addresses to CLNP
                      addresses."
              ::= { clnp 24 }

          clnpMediaToNetEntry OBJECT-TYPE
              SYNTAX  ClnpMediaToNetEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "Each entry contains on ClnpAddress to `physical'
                      address equivalence."
              INDEX   { clnpMediaToNetIfIndex, clnpMediaToNetPhysAddress }
              ::= { clnpMediaToNetTable 1 }

          ClnpMediaToNetEntry ::=
              SEQUENCE {
                  clnpMediaToNetIfIndex
                      INTEGER,
                  clnpMediaToNetNetAddress
                      ClnpAddress,
                  clnpMediaToNetPhysAddress
                      PhysAddress,
                  clnpMediaToNetType
                      INTEGER,
                  clnpMediaToNetAge
                      INTEGER,
                  clnpMediaToNetHoldTime
                      INTEGER
              }

          clnpMediaToNetIfIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The interface 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
                      ifIndex."
              ::= { clnpMediaToNetEntry 1 }

          clnpMediaToNetAddress OBJECT-TYPE
              SYNTAX  ClnpAddress
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The ClnpAddress corresponding to the media-



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                      dependent `physical' address."
              ::= { clnpMediaToNetEntry 2 }

          clnpMediaToNetPhysAddress OBJECT-TYPE
              SYNTAX  PhysAddress
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The media-dependent `physical' address."
              ::= { clnpMediaToNetEntry 3 }

          clnpMediaToNetType OBJECT-TYPE
              SYNTAX  INTEGER {
                          other(1),       -- none of the following
                          invalid(2),     -- an invalidated mapping
                          dynamic(3),
                          static(4)
                      }
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The type of mapping.

                      Setting this object to the value invalid(2) has
                      the effect of invalidating the corresponding entry
                      in the clnpMediaToNetTable.  That is, it
                      effectively dissassociates the interface
                      identified with said entry from the mapping
                      identified with said entry.  It is an
                      implementation-specific matter as to whether the
                      agent removes an invalidated entry from the table.
                      Accordingly, management stations must be prepared
                      to receive tabular information from agents that
                      corresponds to entries not currently in use.
                      Proper interpretation of such entries requires
                      examination of the relevant clnpMediaToNetType
                      object."
              ::= { clnpMediaToNetEntry 4 }

          clnpMediaToNetAge OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The number of seconds since this entry was last
                      updated or otherwise determined to be correct.
                      Note that no semantics of `too old' can be implied
                      except through knowledge of the type of entry."



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              ::= { clnpMediaToNetEntry 5 }

          clnpMediaToNetHoldTime OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The time in seconds this entry will be valid.
                      Static entries should always report this field as
                      -1."
              ::= { clnpMediaToNetEntry 6 }


          -- the CLNP Error group

          -- Implementation of this group is recommended for all
          -- systems which implement the CLNP Error protocol.

          clnpInErrors OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP Error PDUs received by this
                      entity."
              ::= { error 1 }

          clnpOutErrors OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of CLNP Error PDUs sent by this
                      entity."
              ::= { error 2 }

          clnpInErrUnspecs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unspecified CLNP Error PDUs
                      received by this entity."
              ::= { error 3 }

          clnpInErrProcs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only



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              STATUS  mandatory
              DESCRIPTION
                      "The number of protocol procedure CLNP Error PDUs
                      received by this entity."
              ::= { error 4 }

          clnpInErrCksums OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of checksum CLNP Error PDUs received
                      by this entity."
              ::= { error 5 }

          clnpInErrCongests OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of congestion drop CLNP Error PDUs
                      received by this entity."
              ::= { error 6 }

          clnpInErrHdrs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of header syntax CLNP Error PDUs
                      received by this entity."
              ::= { error 7 }

          clnpInErrSegs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of segmentation disallowed CLNP Error
                      PDUs received by this entity."
              ::= { error 8 }

          clnpInErrIncomps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of incomplete PDU CLNP Error PDUs



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                      received by this entity."
              ::= { error 9 }

          clnpInErrDups OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of duplicate option CLNP Error PDUs
                      received by this entity."
              ::= { error 10 }

          clnpInErrUnreachDsts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unreachable destination CLNP Error
                      PDUs received by this entity."
              ::= { error 11 }

          clnpInErrUnknownDsts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unknown destination CLNP Error PDUs
                      received by this entity."
              ::= { error 12 }

          clnpInErrSRUnspecs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unspecified source route CLNP Error
                      PDUs received by this entity."
              ::= { error 13 }

          clnpInErrSRSyntaxes OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of source route syntax CLNP Error PDUs
                      received by this entity."
              ::= { error 14 }




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          clnpInErrSRUnkAddrs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of source route unknown address CLNP
                      Error PDUs received by this entity."
              ::= { error 15 }

          clnpInErrSRBadPaths OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of source route bad path CLNP Error
                      PDUs received by this entity."
              ::= { error 16 }

          clnpInErrHops OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of hop count exceeded CLNP Error PDUs
                      received by this entity."
              ::= { error 17 }

          clnpInErrHopReassms OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of hop count exceeded while
                      reassembling CLNP Error PDUs received by this
                      entity."
              ::= { error 18 }

          clnpInErrUnsOptions OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported option CLNP Error PDUs
                      received by this entity."
              ::= { error 19 }

          clnpInErrUnsVersions OBJECT-TYPE
              SYNTAX  Counter



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              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of version mismatch CLNP Error PDUs
                      received by this entity."
              ::= { error 20 }

          clnpInErrUnsSecurities OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported security option CLNP
                      Error PDUs received by this entity."
              ::= { error 21 }

          clnpInErrUnsSRs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported source route option
                      CLNP Error PDUs received by this entity."
              ::= { error 22 }

          clnpInErrUnsRRs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported record route option
                      CLNP Error PDUs received by this entity."
              ::= { error 23 }

          clnpInErrInterferences OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of reassembly interference CLNP Error
                      PDUs received by this entity."
              ::= { error 24 }

          clnpOutErrUnspecs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION



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                      "The number of unspecified CLNP Error PDUs sent by
                      this entity."
              ::= { error 25 }

          clnpOutErrProcs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of protocol procedure CLNP Error PDUs
                      sent by this entity."
              ::= { error 26 }

          clnpOutErrCksums OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of checksum CLNP Error PDUs sent by
                      this entity."
              ::= { error 27 }

          clnpOutErrCongests OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of congestion drop CLNP Error PDUs
                      sent by this entity."
              ::= { error 28 }

          clnpOutErrHdrs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of header syntax CLNP Error PDUs sent
                      by this entity."
              ::= { error 29 }

          clnpOutErrSegs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of segmentation disallowed CLNP Error
                      PDUs sent by this entity."
              ::= { error 30 }



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          clnpOutErrIncomps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of incomplete PDU CLNP Error PDUs sent
                      by this entity."
              ::= { error 31 }

          clnpOutErrDups OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of duplicate option CLNP Error PDUs
                      sent by this entity."
              ::= { error 32 }

          clnpOutErrUnreachDsts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unreachable destination CLNP Error
                      PDUs sent by this entity."
              ::= { error 33 }

          clnpOutErrUnknownDsts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unknown destination CLNP Error PDUs
                      sent by this entity."
              ::= { error 34 }

          clnpOutErrSRUnspecs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unspecified source route CLNP Error
                      PDUs sent by this entity."
              ::= { error 35 }

          clnpOutErrSRSyntaxes OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only



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              STATUS  mandatory
              DESCRIPTION
                      "The number of source route syntax CLNP Error PDUs
                      sent by this entity."
              ::= { error 36 }

          clnpOutErrSRUnkAddrs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of source route unknown address CLNP
                      Error PDUs sent by this entity."
              ::= { error 37 }

          clnpOutErrSRBadPaths OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of source route bad path CLNP Error
                      PDUs sent by this entity."
              ::= { error 38 }

          clnpOutErrHops OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of hop count exceeded CLNP Error PDUs
                      sent by this entity."
              ::= { error 39 }

          clnpOutErrHopReassms OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of hop count exceeded while
                      reassembling CLNP Error PDUs sent by this entity."
              ::= { error 40 }

          clnpOutErrUnsOptions OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported option CLNP Error PDUs



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                      sent by this entity."
              ::= { error 41 }

          clnpOutErrUnsVersions OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of version mismatch CLNP Error PDUs
                      sent by this entity."
              ::= { error 42 }

          clnpOutErrUnsSecurities OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported security option CLNP
                      Error PDUs sent by this entity."
              ::= { error 43 }

          clnpOutErrUnsSRs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported source route option
                      CLNP Error PDUs sent by this entity."
              ::= { error 44 }

          clnpOutErrUnsRRs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of unsupported record route option
                      CLNP Error PDUs sent by this entity."
              ::= { error 45 }

          clnpOutErrInterferences OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of reassembly interference CLNP Error
                      PDUs sent by this entity."
              ::= { error 46 }




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          -- the ES-IS group

          -- Implementation of this group is recommended for all
          -- systems which implement the End-System to Intermediate
          -- System protocol.

          esisESHins OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ESH PDUs received by this entity."
              ::= { es-is 1 }

          esisESHouts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ESH PDUs sent by this entity."
              ::= { es-is 2 }

          esisISHins OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ISH PDUs received by this entity."
              ::= { es-is 3 }

          esisISHouts OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ISH PDUs sent by this entity."
              ::= { es-is 4 }

          esisRDUins OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of RDU PDUs received by this entity."
              ::= { es-is 5 }

          esisRDUouts OBJECT-TYPE
              SYNTAX  Counter



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              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of RDU PDUs sent by this entity."
              ::= { es-is 6 }

          END

5.  References

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

  [2]  Cerf, V., "Report of the Second Ad Hoc Network Management Review
       Group", RFC 1109, NRI, August 1989.

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

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

  [5]  Case, J., M. Fedor, M. Schoffstall, and J. Davin, The Simple
       Network Management Protocol", RFC 1157, University of Tennessee
       at Knoxville, Performance Systems International, Performance
       Systems International, and the MIT Laboratory for Computer
       Science, May 1990.

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

  [7]  Information processing systems - Open Systems Interconnection,
       "Specification of Abstract Syntax Notation One (ASN.1)",
       International Organization for Standardization, International
       Standard 8824, December 1987.

  [8]  Information processing systems - Open Systems Interconnection,
       "Specification of Basic Encoding Rules for Abstract Notation One
       (ASN.1)", International Organization for Standardization,
       International Standard 8825, December 1987.

  [9]  Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions,
       RFC 1212, Performance Systems International, Hughes LAN Systems,



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       Inc., March 1991.

 [10]  Information processing systems - Data Communications - Protocol
       for providing the Connectionless-mode Network Service and
       Provision of Underlying Service, International Organization for
       Standardization, International Standard 8473, May 1987.

 [11]  End System to Intermediate System Routing Exchange Protocol for
       Use in Conjunction with the Protocol for the Provision of the
       Connectionless-mode Network Service (ISO 8473), International
       Draft Proposal 9542.

 [12]  Kille, S., "A String Encoding of Presentation Address", Research
       Note RN/89/14, Department of Computer Science, University College
       London, February 1989.

6.  Security Considerations

   Security issues are not discussed in this memo.

7.  Author's Address:

   Greg Satz
   cisco Systems, Inc.
   1350 Willow Road
   Menlo Park, CA 94025

   Phone: (415) 326-1941

   Email: Satz@CISCO.COM





















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