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RFC 1162 - Connectionless Network Protocol (ISO 8473) and End Sy


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Network Working Group                                        Greg Satz
Request for Comments: 1162                         cisco Systems, Inc.
                                                             June 1990

               Connectionless Network Protocol (ISO 8473)
                                  and
              End System to Intermediate System (ISO 9542)
                      Management Information Base

                           Table of Contents

   1. Status of this Memo ..................................    1
   2. Historical Perspective................................    2
   3. Objects ..............................................    3
   3.1 Format of Definitions ...............................    3
   4. Object Definitions ...................................    4
   4.1 The CLNP Group ......................................    5
   4.1.1 The CLNP Interfaces table .........................   14
   4.1.2 The CLNP Routing table ............................   16
   4.1.3 The CLNP Address Translation Tables ...............   22
   4.2 The CLNP Error Group ................................   30
   4.3 The ESIS Group ......................................   47
   5. Definitions ..........................................   50
   6. Identification of OBJECT instances for use with  the
      SNMP .................................................   66
   6.1 clnpAddrTable Object Type Names .....................   67
   6.2 clnpRoutingTable Object Type Names ..................   67
   6.3 clnpNetToMediaTable Object Type Names ...............   68
   6.4 clnpMediaToNetTable Object Type Names ...............   68
   7. References ...........................................   69
   8. Security Considerations...............................   70
   9. Author's Address......................................   70

1.  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 memo does not specify a standard for the Internet community.
   However, after experimentation, if sufficient consensus is reached in
   the Internet community, then a subsequent revision of this document
   may be placed in the Internet-standard MIB.

   Distribution of this memo is unlimited.

2.  Historical Perspective

   As reported in RFC 1052, IAB Recommendations for the Development of
   Internet Network Management Standards [1], a two-prong strategy for
   network management of TCP/IP-based internets was undertaken.  In the
   short-term, the Simple Network Management Protocol (SNMP), defined in
   RFC 1067, was to be used to manage nodes in the Internet community.
   In the long-term, the use of the OSI network management framework was
   to be examined.  Two documents were produced to define the management
   information: RFC 1065, which defined the Structure of Management
   Information (SMI), and RFC 1066, which defined the Management
   Information Base (MIB).  Both of these documents were designed so as
   to be compatible with both the SNMP and the OSI network management
   framework.

   This strategy was quite successful in the short-term: Internet-based
   network management technology was fielded, by both the research and
   commercial communities, within a few months.  As a result of this,
   portions of the Internet community became network manageable in a
   timely fashion.

   As reported in RFC 1109, Report of the Second Ad Hoc Network
   Management Review Group [2], the requirements of the SNMP and the OSI
   network management frameworks were more different than anticipated.
   As such, the requirement for compatibility between the SMI/MIB and
   both frameworks was suspended.  This action permitted the operational
   network management framework, based on the SNMP, to respond to new
   operational needs in the Internet community by producing MIB-II.

   In May of 1990, the core documents were elevated to "Standard
   Protocols" with "Recommended" status.  As such, the Internet-
   standard network management framework consists of: Structure and
   Identification of Management Information for TCP/IP-based internets,
   RFC 1155 [3], which describes how managed objects contained in the
   MIB are defined; Management Information Base for Network Management
   of TCP/IP-based internets, which describes the managed objects
   contained in the MIB, RFC 1156 [4]; and, the Simple Network
   Management Protocol, RFC 1157 [5], which defines the protocol used to
   manage these objects.

   Consistent with the IAB directive to produce simple, workable systems
   in the short-term, the list of managed objects defined in the
   Internet-standard MIB was derived by taking only those elements which
   are considered essential.  However, the SMI defined three
   extensibility mechanisms: one, the addition of new standard objects
   through the definitions of new versions of the MIB; two, the addition
   of widely-available but non-standard objects through the experimental
   subtree; and three, the addition of private objects through the

   enterprises subtree.  Such additional objects can not only be used
   for vendor-specific elements, but also for experimentation as
   required to further the knowledge of which other objects are
   essential.

   Since the publication of the Internet-standard MIB, experience has
   lead to a new document, termed MIB-II [6], being defined.

   This memo defines extensions to the MIB using the second method.  It
   contains definitions of managed objects used for experimentation.
   After experimentation, if sufficient consensus is reached in the
   Internet community, then a subsequent revision of this memo may be
   placed in the Internet-standard MIB.

3.  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.

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

3.1.  Format of Definitions

   The next section contains the specification of all object types
   contained in the MIB.  Following the conventions of the companion
   memo, the object types are defined using the following fields:

          OBJECT:
          -------
               A textual name, termed the OBJECT DESCRIPTOR, for the
               object type, along with its corresponding OBJECT
               IDENTIFIER.

          Syntax:
               The abstract syntax for the object type, presented using
               ASN.1.  This must resolve to an instance of the ASN.1
               type ObjectSyntax defined in the SMI.

          Definition:
               A textual description of the semantics of the object
               type.  Implementations should ensure that their
               interpretation of the object type fulfills this
               definition since this MIB is intended for use in multi-
               vendor environments.  As such it is vital that object
               types have consistent meaning across all machines.

          Access:
               A keyword, one of read-only, read-write, write-only, or
               not-accessible.  Note that this designation specifies the
               minimum level of support required.  As a local matter,
               implementations may support other access types (e.g., an
               implementation may elect to permitting writing a variable
               marked herein as read-only).  Further, protocol-specific
               "views" (e.g., those implied by an SNMP community) may
               make further restrictions on access to a variable.

          Status:
               A keyword, one of mandatory, optional, obsolete, or
               deprecated.  Use of deprecated implies mandatory status.

4.  Object Definitions

               CLNS-MIB DEFINITIONS ::= BEGIN

               IMPORTS
                       experimental,  OBJECT-TYPE, Counter
                               FROM RFC1155-SMI;

               -- new type of NetworkAddress

               ClnpAddress ::=
                   [APPLICATION 5]
                       IMPLICIT OCTET STRING (SIZE (1..21))

               clns    OBJECT IDENTIFIER ::=   { experimental 1 }

               clnp    OBJECT IDENTIFIER ::=   { clns 1 }
               error   OBJECT IDENTIFIER ::=   { clns 2 }
               echo    OBJECT IDENTIFIER ::=   { clns 3 }
               es-is   OBJECT IDENTIFIER ::=   { clns 4 }

               END

   These objects can be used when the ISO Connectionless-mode Network
   Protocol [9] and End System to Intermediate System [10] 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 [11] to textually describe OSI
   addresses.

   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 2 octets.

4.1.  The CLNP Group

   Implementation is experimental and is recommended for all systems
   that support a CLNP.

          OBJECT:
          -------
               clnpForwarding { clnp 1 }

          Syntax:
               INTEGER {
                    is(1),   -- entity is an intermediate system
                    es(2),   -- entity is an end system and does not
                                forward PDUs
               }

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpDefaultLifeTime { clnp 2 }

          Syntax:
               INTEGER

          Definition:
               The default value inserted into the Lifetime field of the
               CLNP PDU header of PDUs sourced by this entity.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInReceives { clnp 3 }

          Syntax:
               Counter

          Definition:
               The total number of input PDUs received from all
               connected network interfaces running CLNP, including
               errors.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInHdrErrors { clnp 4 }

          Syntax:
               Counter

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInAddrErrors { clnp 5 }

          Syntax:
               Counter

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpForwPDUs { clnp 6 }

          Syntax:
               Counter

          Definition:
               The number of input PDUs for which this entity was not
               the final destination and which an attempt was made to
               forward them onward.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInUnknownNLPs { clnp 7 }

          Syntax:
               Counter

          Definition:
               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).

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInUnknownULPs { clnp 8 }

          Syntax:
               Counter

          Definition:
               The number of locally-addressed PDUs successfully
               received but discarded because the upper layer protocol
               was unknown or unsupported (e.g., not TP4).

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInDiscards { clnp 9 }

          Syntax:
               Counter

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInDelivers { clnp 10 }

          Syntax:
               Counter

          Definition:
               The total number of input PDUs successfully delivered to
               the CLNS transport user.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutRequests { clnp 11 }

          Syntax:
               Counter

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutDiscards { clnp 12 }

          Syntax:
               Counter

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutNoRoutes { clnp 13 }

          Syntax:
               Counter

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpReasmTimeout { clnp 14 }

          Syntax:
               INTEGER

          Definition:
               The maximum number of seconds which received segments are
               held while they are awaiting reassembly at this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpReasmReqds { clnp 15 }

          Syntax:
               Counter

          Definition:
               The number of CLNP segments received which needed to be
               reassembled at this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpReasmOKs { clnp 16 }

          Syntax:
               Counter

          Definition:
               The number of CLNP PDUs successfully re-assembled at this
               entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpReasmFails { clnp 17 }

          Syntax:
               Counter

          Definition:
               The number of failures detected by the CLNP reassembly
               algorithm (for any reason: timed out, buffer size, etc).

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpSegOKs { clnp 18 }

          Syntax:
               Counter

          Definition:
               The number of CLNP PDUs that have been successfully
               segmented at this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpSegFails { clnp 19 }

          Syntax:
               Counter

          Definition:
               The number of CLNP PDUs that have been discarded because
               they needed to be fragmented at this entity but could
               not.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpSegCreates { clnp 20 }

          Syntax:
               Counter

          Definition:
               The number of CLNP PDU segments that have been generated
               as a result of segmentation at this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInOpts { clnp 25 }

          Syntax:
               Counter

          Definition:
               The number of CLNP PDU segments that have been input with
               options at this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutOpts { clnp 26 }

          Syntax:
               Counter

          Definition:
               The number of CLNP PDU segments that have been generated
               with options by this entity.

          Access:
               read-only.

          Status:
               mandatory.

4.1.1.  The CLNP Interfaces table

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

          OBJECT:
          -------
               clnpAddrTable { clnp 21 }

          Syntax:
               SEQUENCE OF ClnpAddrEntry

          Definition:
               The table of addressing information relevant to this
               entity's CLNP addresses.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpAddrEntry { clnpAddrTable 1 }

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

          Definition:
               The addressing information for one of this entity's CLNP
               addresses.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpAdEntAddr { clnpAddrEntry 1 }

          Syntax:
               ClnpAddress

          Definition:
               The CLNP address to which this entry's addressing
               information pertains.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpAdEntIfIndex { clnpAddrEntry 2 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpAdEntReasmMaxSize { clnpAddrEntry 3 }

          Syntax:
               INTEGER (0..65535)

          Definition:
               The size of the largest CLNP PDU which this entity can
               re-assemble from incoming CLNP segmented PDUs received on
               this interface.

          Access:
               read-only.

          Status:
               mandatory.

4.1.2.  The CLNP Routing table

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

          OBJECT:
          -------
               clnpRoutingTable { clnp 22 }

          Syntax:
               SEQUENCE OF ClnpRouteEntry

          Definition:
               This entity's CLNP routing table.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteEntry { clnpRoutingTable 1 }

          Syntax:
               ClnpRouteEntry ::= SEQUENCE {
                    clnpRouteDest
                        ClnpAddress,
                    clnpRouteIfIndex
                        INTEGER,
                    clnpRouteMetric1
                        INTEGER,
                    clnpRouteMetric2
                        INTEGER,
                    clnpRouteMetric3
                        INTEGER,
                    clnpRouteMetric4
                        INTEGER,
                    clnpRouteNextHop
                        ClnpAddress,
                    clnpRouteType
                        INTEGER,
                    clnpRouteProto
                        INTEGER,
                    clnpRouteAge
                        INTEGER
               }

          Definition:
               A route to a particular destination.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteDest { clnpRouteEntry 1 }

          Syntax:
               ClnpAddress

          Definition:
               The destination CLNP address of this route.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteIfIndex { clnpRouteEntry 2 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteMetric1 { clnpRouteEntry 3 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteMetric2 { clnpRouteEntry 4 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteMetric3 { clnpRouteEntry 5 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteMetric4 { clnpRouteEntry 6 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteNextHop { clnpRouteEntry 7 }

          Syntax:
               ClnpAddress

          Definition:
               The CLNP address of the next hop of this route.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteType { clnpRouteEntry 8 }

          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
               }

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteProto { clnpRouteEntry 9 }

          Syntax:
               INTEGER {
                    other(1),     -- none of the following

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

                                  -- 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)
               }

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpRouteAge { clnpRouteEntry 10 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

4.1.3.  The CLNP Address Translation Tables

   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.

          OBJECT:
          -------
               clnpNetToMediaTable { clnp 23 }

          Syntax:
               SEQUENCE OF ClnpNetToMediaEntry

          Definition:
               The CLNP Address Translation table used for mapping from
               CLNP addresses to physical addresses.

          Access:
                not-accessible

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaEntry { clnpNetToMediaTable 1 }

          Syntax:
               ClnpNetToMediaEntry ::= SEQUENCE {
                    clnpNetToMediaIfIndex
                        INTEGER,
                    clnpNetToMediaPhysAddress
                        OCTET STRING,
                    clnpNetToMediaNetAddress
                        ClnpAddress,
                    clnpNetToMediaType
                        INTEGER,
                    clnpNetToMediaAge
                        INTEGER,
                    clnpNetToMediaHoldTime
                        INTEGER
               }

          Definition:
               Each entry contains one CLNP address to "physical"
               address equivalence.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaIfIndex { clnpNetToMediaEntry 1 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaPhysAddress { clnpNetToMediaEntry 2 }

          Syntax:
               OCTET STRING

          Definition:
               The media-dependent "physical" address.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaNetAddress { clnpNetToMediaEntry 3 }

          Syntax:
               ClnpAddress

          Definition:
               The CLNP address corresponding to the media-dependent
               "physical" address.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaType { clnpNetToMediaEntry 4 }

          Syntax:
               INTEGER {
                    other(1),       -- none of the following
                    invalid(2),     -- an invalidated mapping
                    dynamic(3),
                    static(4)
               }

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaAge { clnpNetToMediaEntry 5 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpNetToMediaHoldTime { clnpNetToMediaEntry 6 }

          Syntax:
               INTEGER

          Definition:
               The time in seconds this entry will be valid. Static
               entries should always report this field as -1.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetTable { clnp 24 }

          Syntax:
               SEQUENCE OF ClnpMediaToNetEntry

          Definition:
               The CLNP Address Translation table used for mapping from
               physical addresses to CLNP addresses.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetEntry { clnpMediaToNetTable 1 }

          Syntax:
               ClnpMediaToNetEntry ::= SEQUENCE {
                    clnpMediaToNetIfIndex
                        INTEGER,
                    clnpMediaToNetNetAddress
                        ClnpAddress,
                    clnpMediaToNetPhysAddress
                        OCTET STRING,
                    clnpMediaToNetType
                        INTEGER,
                    clnpMediaToNetAge
                        INTEGER,
                    clnpMediaToNetHoldTime
                        INTEGER
               }

          Definition:
               Each entry contains on ClnpAddress to "physical" address
               equivalence.

          Access:
               not-accessible.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetIfIndex { clnpMediaToNetEntry 1 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetAddress { clnpMediaToNetEntry 2 }

          Syntax:
               ClnpAddress

          Definition:
               The ClnpAddress corresponding to the media-dependent
               "physical" address.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetPhysAddress { clnpMediaToNetEntry 3 }

          Syntax:
               OCTET STRING

          Definition:
               The media-dependent "physical" address.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetType { clnpMediaToNetEntry 4 }

          Syntax:
               INTEGER {
                    other(1),       -- none of the following
                    invalid(2),     -- an invalidated mapping
                    dynamic(3),

                    static(4)
               }

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetAge { clnpMediaToNetEntry 5 }

          Syntax:
               INTEGER

          Definition:
               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.

          Access:
               read-write.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpMediaToNetHoldTime { clnpMediaToNetEntry 6 }

          Syntax:
               INTEGER

          Definition:
               The time in seconds this entry will be valid. Static
               entries should always report this field as -1.

          Access:
               read-write.

          Status:
               mandatory.

4.2.  The CLNP Error Group

   This group records the CLNP Error protocol and is recommended for all
   systems which support CLNP.

          OBJECT:
          -------
               clnpInErrors { error 1 }

          Syntax:
               Counter

          Definition:
               The number of CLNP Error PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrors { error 2 }

          Syntax:
               Counter

          Definition:
               The number of CLNP Error PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnspecs { error 3 }

          Syntax:
               Counter

          Definition:
               The number of unspecified CLNP Error PDUs received by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrProcs { error 4 }

          Syntax:
               Counter

          Definition:
               The number of protocol procedure CLNP Error PDUs received
               by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrCksums { error 5 }

          Syntax:
               Counter

          Definition:
               The number of checksum CLNP Error PDUs received by this
               entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrCongests { error 6 }

          Syntax:
               Counter

          Definition:
               The number of congestion drop CLNP Error PDUs received by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrHdrs { error 7 }

          Syntax:
               Counter

          Definition:
               The number of header syntax CLNP Error PDUs received by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrSegs { error 8 }

          Syntax:
               Counter

          Definition:
               The number of segmentation disallowed CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrIncomps { error 9 }

          Syntax:
               Counter

          Definition:
               The number of incomplete PDU CLNP Error PDUs received by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrDups { error 10 }

          Syntax:
               Counter

          Definition:
               The number of duplicate option CLNP Error PDUs received
               by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnreachDsts { error 11 }

          Syntax:
               Counter

          Definition:
               The number of unreachable destination CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnknownDsts { error 12 }

          Syntax:
               Counter

          Definition:
               The number of unknown destination CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrSRUnspecs { error 13 }

          Syntax:
               Counter

          Definition:
               The number of unspecified source route CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrSRSyntaxes { error 14 }

          Syntax:
               Counter

          Definition:
               The number of source route syntax CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrSRUnkAddrs { error 15 }

          Syntax:
               Counter

          Definition:
               The number of source route unknown address CLNP Error
               PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrSRBadPaths { error 16 }

          Syntax:
               Counter

          Definition:
               The number of source route bad path CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrHops { error 17 }

          Syntax:
               Counter

          Definition:
               The number of hop count exceeded CLNP Error PDUs received
               by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrHopReassms { error 18 }

          Syntax:
               Counter

          Definition:
               The number of hop count exceeded while reassembling CLNP
               Error PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnsOptions { error 19 }

          Syntax:
               Counter

          Definition:
               The number of unsupported option CLNP Error PDUs received
               by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnsVersions { error 20 }

          Syntax:
               Counter

          Definition:
               The number of version mismatch CLNP Error PDUs received
               by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnsSecurities { error 21 }

          Syntax:
               Counter

          Definition:
               The number of unsupported security option CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnsSRs { error 22 }

          Syntax:
               Counter

          Definition:
               The number of unsupported source route option CLNP Error
               PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrUnsRRs { error 23 }

          Syntax:
               Counter

          Definition:
               The number of unsupported record route option CLNP Error
               PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpInErrInterferences { error 24 }

          Syntax:
               Counter

          Definition:
               The number of reassembly interference CLNP Error PDUs
               received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnspecs { error 25 }

          Syntax:
               Counter

          Definition:
               The number of unspecified CLNP Error PDUs sent by this
               entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrProcs { error 26 }

          Syntax:
               Counter

          Definition:
               The number of protocol procedure CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrCksums { error 27 }

          Syntax:
               Counter

          Definition:
               The number of checksum CLNP Error PDUs sent by this
               entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrCongests { error 28 }

          Syntax:
               Counter

          Definition:
               The number of congestion drop CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrHdrs { error 29 }

          Syntax:
               Counter

          Definition:
               The number of header syntax CLNP Error PDUs sent by this
               entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrSegs { error 30 }

          Syntax:
               Counter

          Definition:
               The number of segmentation disallowed CLNP Error PDUs
               sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrIncomps { error 31 }

          Syntax:
               Counter

          Definition:
               The number of incomplete PDU CLNP Error PDUs sent by this
               entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrDups { error 32 }

          Syntax:
               Counter

          Definition:
               The number of duplicate option CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnreachDsts { error 33 }

          Syntax:
               Counter

          Definition:
               The number of unreachable destination CLNP Error PDUs
               sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnknownDsts { error 34 }

          Syntax:
               Counter

          Definition:
               The number of unknown destination CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrSRUnspecs { error 35 }

          Syntax:
               Counter

          Definition:
               The number of unspecified source route CLNP Error PDUs
               sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrSRSyntaxes { error 36 }

          Syntax:
               Counter

          Definition:
               The number of source route syntax CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrSRUnkAddrs { error 37 }

          Syntax:
               Counter

          Definition:
               The number of source route unknown address CLNP Error
               PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrSRBadPaths { error 38 }

          Syntax:
               Counter

          Definition:
               The number of source route bad path CLNP Error PDUs sent
               by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrHopss { error 39 }

          Syntax:
               Counter

          Definition:
               The number of hop count exceeded CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrHopReassms { error 40 }

          Syntax:
               Counter

          Definition:
               The number of hop count exceeded while reassembling CLNP
               Error PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnsOptions { error 41 }

          Syntax:
               Counter

          Definition:
               The number of unsupported option CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnsVersions { error 42 }

          Syntax:
               Counter

          Definition:
               The number of version mismatch CLNP Error PDUs sent by
               this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnsSecurities { error 43 }

          Syntax:
               Counter

          Definition:
               The number of unsupported security option CLNP Error PDUs
               sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnsSRs { error 44 }

          Syntax:
               Counter

          Definition:
               The number of unsupported source route option CLNP Error
               PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrUnsRRs { error 45 }

          Syntax:
               Counter

          Definition:
               The number of unsupported record route option CLNP Error
               PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               clnpOutErrInterferences { error 46 }

          Syntax:
               Counter

          Definition:
               The number of reassembly interference CLNP Error PDUs
               sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

4.3.  The ESIS Group

   The ESIS group contains information about the End System Intermediate
   System protocol used to maintain neighbor reachibility information.
   Both ESs and ISs are expected to implement this group if they running
   a CLNP.

          OBJECT:
          -------
               esisESHin { es-is 1 }

          Syntax:
               Counter

          Definition:
               The number of ESH PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               esisESHout { es-is 2 }

          Syntax:
               Counter

          Definition:
               The number of ESH PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               esisISHin { es-is 3 }

          Syntax:
               Counter

          Definition:
               The number of ISH PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               esisISHout { es-is 4 }

          Syntax:
               Counter

          Definition:
               The number of ISH PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               esisRDUin { es-is 5 }

          Syntax:
               Counter

          Definition:
               The number of RDU PDUs received by this entity.

          Access:
               read-only.

          Status:
               mandatory.

          OBJECT:
          -------
               esisRDUout { es-is 6 }

          Syntax:
               Counter

          Definition:
               The number of RDU PDUs sent by this entity.

          Access:
               read-only.

          Status:
               mandatory.

5.  Definitions

               CLNS-MIB DEFINITIONS ::= BEGIN

               IMPORTS
                       experimental, OBJECT-TYPE, Counter
                               FROM RFC1155-SMI;

               -- new type of NetworkAddress

               ClnpAddress ::=
                   [APPLICATION 5]
                       IMPLICIT OCTET STRING (SIZE (1..21))

               clns    OBJECT IDENTIFIER ::=   { experimental 1 }

               clnp    OBJECT IDENTIFIER ::=   { clns 1 }
               error   OBJECT IDENTIFIER ::=   { clns 2 }
               echo    OBJECT IDENTIFIER ::=   { clns 3 }
               es-is   OBJECT IDENTIFIER ::=   { clns 4 }

               -- the General CLNP group

               clnpForwarding OBJECT-TYPE
                       SYNTAX  INTEGER {
                                   is(1),  -- entity is an
                                           -- intermediate system
                                   es(2)   -- entity is an end system
                                           -- and does not forward pdus
                               }
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnp 1 }

               clnpDefaultLifeTime OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnp 2 }

               clnpInReceives OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 3 }

               clnpInHdrErrors OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 4 }

               clnpInAddrErrors OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 5 }

               clnpForwPDUs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 6 }

               clnpInUnknownNLPs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 7 }

               clnpInUnknownULPs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 8 }

               clnpInDiscards OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 9 }

               clnpInDelivers OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 10 }

               clnpOutRequests OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 11 }

               clnpOutDiscards OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 12 }

               clnpOutNoRoutes OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 13 }

               clnpReasmTimeout OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 14 }

               clnpReasmReqds  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 15 }

               clnpReasmOKs    OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 16 }

               clnpReasmFails  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 17 }

               clnpSegOKs      OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 18 }

               clnpSegFails    OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 19 }

               clnpSegCreates  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 20 }

               clnpInOpts      OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 25 }

               clnpOutOpts     OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnp 26 }

               -- the CLNP Interface table

               clnpAddrTable   OBJECT-TYPE
                       SYNTAX  SEQUENCE OF ClnpAddrEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
                       ::= { clnp 21 }

               clnpAddrEntry   OBJECT-TYPE
                       SYNTAX  ClnpAddrEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
               --      INDEX   { clnpAdEntAddr }
                       ::= { clnpAddrTable 1 }

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

               clnpAdEntAddr OBJECT-TYPE
                       SYNTAX  ClnpAddress
                       ACCESS  read-only
                       STATUS  mandatory
                       ::=  { clnpAddrEntry 1 }

               clnpAdEntIfIndex OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-only
                       STATUS  mandatory
                       ::=  { clnpAddrEntry 2 }

               clnpAdEntReasmMaxSize OBJECT-TYPE
                       SYNTAX  INTEGER (0..65535)
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { clnpAddrEntry 3 }

               -- the CLNP Routing table

               clnpRoutingTable OBJECT-TYPE
                       SYNTAX  SEQUENCE OF ClnpRouteEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
                       ::= { clnp 22 }

               clnpRouteEntry OBJECT-TYPE
                       SYNTAX  ClnpRouteEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
               --      INDEX   { clnpRouteDest }
                       ::= { clnpRoutingTable 1 }

               ClnpRouteEntry ::= SEQUENCE {
                   clnpRouteDest
                       ClnpAddress,
                   clnpRouteIfIndex
                       INTEGER,
                   clnpRouteMetric1
                       INTEGER,
                   clnpRouteMetric2
                       INTEGER,
                   clnpRouteMetric3
                       INTEGER,
                   clnpRouteMetric4
                       INTEGER,
                   clnpRouteNextHop
                       ClnpAddress,
                   clnpRouteType
                       INTEGER,
                   clnpRouteProto
                       INTEGER,
                   clnpRouteAge
                       INTEGER

               }

               clnpRouteDest OBJECT-TYPE
                       SYNTAX  ClnpAddress
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpRouteEntry 1 }

               clnpRouteIfIndex  OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpRouteEntry 2 }

               clnpRouteMetric1 OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpRouteEntry 3 }

               clnpRouteMetric2 OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpRouteEntry 4 }

               clnpRouteMetric3 OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpRouteEntry 5 }

               clnpRouteMetric4 OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpRouteEntry 6 }

               clnpRouteNextHop OBJECT-TYPE
                       SYNTAX  ClnpAddress
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { 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
                       ::= { clnpRouteEntry 8 }

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

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

                                                 -- 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
                       ::= { clnpRouteEntry 9 }

               clnpRouteAge OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write

                       STATUS  mandatory
                       ::= { clnpRouteEntry 10 }

               -- the CLNP Address Translation tables

               clnpNetToMediaTable OBJECT-TYPE
                       SYNTAX  SEQUENCE OF ClnpNetToMediaEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
                       ::= { clnp 23 }

               clnpNetToMediaEntry OBJECT-TYPE
                       SYNTAX  ClnpNetToMediaEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
               --      INDEX   { clnpNetToMediaIfIndex,
               --                clnpNetToMediaNetAddress }
                       ::= { clnpNetToMediaTable 1 }

               ClnpNetToMediaEntry ::= SEQUENCE {
                   clnpNetToMediaIfIndex
                       INTEGER,
                   clnpNetToMediaPhysAddress
                       OCTET STRING,
                   clnpNetToMediaNetAddress
                       ClnpAddress,
                   clnpNetToMediaType
                       INTEGER,
                   clnpNetToMediaAge
                       INTEGER,
                   clnpNetToMediaHoldTime
                       INTEGER
               }

               clnpNetToMediaIfIndex OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpNetToMediaEntry 1 }

               clnpNetToMediaPhysAddress OBJECT-TYPE
                       SYNTAX  OCTET STRING
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpNetToMediaEntry 2 }

               clnpNetToMediaNetAddress OBJECT-TYPE
                       SYNTAX  ClnpAddress

                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpNetToMediaEntry 3 }

               clnpNetToMediaType OBJECT-TYPE
                       SYNTAX  INTEGER {
                                   other(1),       -- none of the
                                                   -- following
                                   invalid(2),     -- an invalidated
                                                   -- mapping
                                   dynamic(3),
                                   static(4)
                           }
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpNetToMediaEntry 4 }

               clnpNetToMediaAge OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpNetToMediaEntry 5 }

               clnpNetToMediaHoldTime OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpNetToMediaEntry 6 }

               clnpMediaToNetTable OBJECT-TYPE
                       SYNTAX  SEQUENCE OF ClnpMediaToNetEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
                       ::= { clnp 24 }

               clnpMediaToNetEntry OBJECT-TYPE
                       SYNTAX  ClnpMediaToNetEntry
                       ACCESS  not-accessible
                       STATUS  mandatory
               --      INDEX   { clnpMediaToNetIfIndex,
               --                clnpMediaToNetPhysAddress }
                       ::= { clnpMediaToNetTable 1 }

               ClnpMediaToNetEntry ::= SEQUENCE {
                   clnpMediaToNetIfIndex
                       INTEGER,
                   clnpMediaToNetNetAddress
                       ClnpAddress,

                   clnpMediaToNetPhysAddress
                       OCTET STRING,
                   clnpMediaToNetType
                       INTEGER,
                   clnpMediaToNetAge
                       INTEGER,
                   clnpMediaToNetHoldTime
                       INTEGER
               }

               clnpMediaToNetIfIndex OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpMediaToNetEntry 1 }

               clnpMediaToNetNetAddress OBJECT-TYPE
                       SYNTAX  ClnpAddress
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpMediaToNetEntry 2 }

               clnpMediaToNetPhysAddress OBJECT-TYPE
                       SYNTAX  OCTET STRING
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { 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
                       ::= { clnpMediaToNetEntry 4 }

               clnpMediaToNetAge OBJECT-TYPE
                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpMediaToNetEntry 5 }

               clnpMediaToNetHoldTime OBJECT-TYPE

                       SYNTAX  INTEGER
                       ACCESS  read-write
                       STATUS  mandatory
                       ::= { clnpMediaToNetEntry 6 }

               -- the CLNP Error Group

               clnpInErrors    OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 1 }

               clnpOutErrors   OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 2 }

               clnpInErrUnspecs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 3 }

               clnpInErrProcs  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 4 }

               clnpInErrCksums OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 5 }

               clnpInErrCongests OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 6 }

               clnpInErrHdrs   OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 7 }

               clnpInErrSegs   OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 8 }

               clnpInErrIncomps OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 9 }

               clnpInErrDups   OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 10 }

               clnpInErrUnreachDsts OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 11 }

               clnpInErrUnknownDsts OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 12 }

               clnpInErrSRUnspecs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 13 }

               clnpInErrSRSyntaxes OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 14 }

               clnpInErrSRUnkAddrs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 15 }

               clnpInErrSRBadPaths OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 16 }

               clnpInErrHops   OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 17 }

               clnpInErrHopReassms OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 18 }

               clnpInErrUnsOptions OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 19 }

               clnpInErrUnsVersions OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 20 }

               clnpInErrUnsSecurities OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 21 }

               clnpInErrUnsSRs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 22 }

               clnpInErrUnsRRs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 23 }

               clnpInErrInterferences OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 24 }

               clnpOutErrUnspecs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 25 }

               clnpOutErrProcs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 26 }

               clnpOutErrCksums OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 27 }

               clnpOutErrCongests OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 28 }

               clnpOutErrHdrs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 29 }

               clnpOutErrSegs  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 30 }

               clnpOutErrIncomps OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 31 }

               clnpOutErrDups  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 32 }

               clnpOutErrUnreachDsts OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 33 }

               clnpOutErrUnknownDsts OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 34 }

               clnpOutErrSRUnspecs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 35 }

               clnpOutErrSRSyntaxes OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 36 }

               clnpOutErrSRUnkAddrs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 37 }

               clnpOutErrSRBadPaths OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 38 }

               clnpOutErrHops  OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 39 }

               clnpOutErrHopReassms OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 40 }

               clnpOutErrUnsOptions OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 41 }

               clnpOutErrUnsVersions OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 42 }

               clnpOutErrUnsSecurities OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 43 }

               clnpOutErrUnsSRs OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 44 }

               clnpOutErrUnsRRs        OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 45 }

               clnpOutErrInterferences OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { error 46 }

               -- the CLNP Echo Group

               -- the ES-IS Group

               esisESHins      OBJECT-TYPE

                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { es-is 1 }

               esisESHouts     OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { es-is 2 }

               esisISHins      OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { es-is 3 }

               esisISHouts     OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { es-is 4 }

               esisRDUins      OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { es-is 5 }

               esisRDUouts     OBJECT-TYPE
                       SYNTAX  Counter
                       ACCESS  read-only
                       STATUS  mandatory
                       ::= { es-is 6 }

               END

6.  Identification of OBJECT instances for use with the SNMP

   The names for all object types in the MIB are defined explicitly
   either in the Internet-standard MIB or in other documents which
   conform to the naming conventions of the SMI.  The SMI requires that
   conformant management protocols define mechanisms for identifying
   individual instances of those object types for a particular network
   element.

   Each instance of any object type defined in the MIB is identified in
   SNMP operations by a unique name called its "variable name." In

   general, the name of an SNMP variable is an OBJECT IDENTIFIER of the
   form x.y, where x is the name of a non-aggregate object type defined
   in the MIB and y is an OBJECT IDENTIFIER fragment that, in a way
   specific to the named object type, identifies the desired instance.

   This naming strategy admits the fullest exploitation of the semantics
   of the powerful SNMP get-next operator, because it assigns names for
   related variables so as to be contiguous in the lexicographical
   ordering of all variable names known in the MIB.

   The type-specific naming of object instances is defined below for a
   number of classes of object types.  Instances of an object type to
   which none of the following naming conventions are applicable are
   named by OBJECT IDENTIFIERs of the form x.0, where x is the name of
   said object type in the MIB definition.

   For example, suppose one wanted to identify an instance of the
   variable sysDescr in the Internet-standard MIB.  The object class for
   sysDescr is:

      iso org dod internet mgmt mib system sysDescr
       1   3   6     1      2    1    1       1

   Hence, the object type, x, would be 1.3.6.1.2.1.1.1 to which is
   appended an instance sub-identifier of 0.  That is, 1.3.6.1.2.1.1.1.0
   identifies the one and only instance of sysDescr.

6.1.  clnpAddrTable Object Type Names

   The name of an CLNP-addressable network element, x, is the OBJECT
   IDENTIFIER of the form z such that z is the value (in which each
   octet of the ClnpAddress type is expressed as a sub-identifier of the
   OBJECT IDENTIFIER) of that instance of the clnpAdEntAddr object type
   associated with x.

   For each object type, t, for which the defined name, n, has a prefix
   of clnpAddrEntry, an instance, i, of t is named by an OBJECT
   IDENTIFIER of the form n.y, where y is the name of the CLNP-
   addressable network element about which i represents information.

   For example, suppose one wanted to find the maximum reassembly size
   of an entry in the CLNP interface table associated with an CLNP
   address of NS+0504030201.  Accordingly, clnpAdEntNetMask.5.5.4.3.2.1
   would identify the desired instance.

6.2.  clnpRoutingTable Object Type Names

   The name of an CLNP route, x, is the OBJECT IDENTIFIER of the form z

   such that z is the value (in which each octet of the ClnpAddress type
   is expressed as a sub-identifier of the OBJECT IDENTIFIER) of that
   instance of the clnpRouteDest object type associated with x.

   For each object type, t, for which the defined name, n, has a prefix
   of clnpRoutingEntry, an instance, i, of t is named by an OBJECT
   IDENTIFIER of the form n.y, where y is the name of the CLNP route
   about which i represents information.

   For example, suppose one wanted to find the next hop of an entry in
   the CLNP routing table associated  with the destination of
   NS+0504030201.  Accordingly, clnpRouteNextHop.5.5.4.3.2.1 would
   identify the desired instance.

   At the option of the agent, multiple routes to the same destination
   may be visible.  To realize this, the agent, while required to return
   a single entry for an CLNP route, x, of the form n.y, may also return
   information about other routes to the same destination using the form
   n.y.v, where v is a implementation-dependent small, non-negative
   integer.

6.3.  clnpNetToMediaTable Object Type Names

   The name of a cached CLNP address, x, is an OBJECT IDENTIFIER of the
   form s.z, such that s is the value of that instance of the
   clnpNetToMediaIfIndex object type associated with the entry and z is
   the value of the CLNP address of the clnpNetToMediaNetAddress object
   type associated with x, in which each octet of the ClnpAddress type
   is expressed as a sub-identifier of the OBJECT IDENTIFIER.

   For each object type, t, for which the defined name, n, has a prefix
   of clnpNetToMediaEntry, an instance, i, of t is named by an OBJECT
   IDENTIFIER of the form n.y, where y is the name of the cached CLNP
   address about which i represents information.

   For example, suppose one wanted to find the media address of an entry
   in the address translation table associated with a CLNP address of
   NS+0504030201 and interface 3.  Accordingly,
   clnpNetToMediaPhysAddress.3.5.5.4.3.2.1 would identify the desired
   instance.

6.4.  clnpMediaToNetTable Object Type Names

   The name of a cached media address, x, is an OBJECT IDENTIFIER of the
   form s.z, such that s is the value of that instance of the
   clnpMediaToNetIfIndex object type associated with the entry and z is
   the value of the media address of the clnpMediaToNetMediaAddress
   object type associated with x, in which each octet of the media

   address is expressed as a sub- identifier of the OBJECT IDENTIFIER.

   For each object type, t, for which the defined name, n, has a prefix
   of clnpMediaToNetEntry, an instance, i, of t is named by an OBJECT
   IDENTIFIER of the form n.y, where y is the name of the cached media
   address about which i represents information.

   For example, suppose one wanted to find the CLNP address of an entry
   in the address translation table associated with a media address of
   08:00:20:00:38:ba and interface 3.  Accordingly,
   clnpMediaToNetNetAddress.3.8.0.32.0.56.186 would identify the desired
   instance.

7.  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]  Rose, M., "Management Information Base for Network Management of
       TCP/IP-based internets: MIB-II", RFC 1158, Performance Systems
       International, May 1990.

  [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]  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.

 [10] "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.

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

8.  Security Considerations

   Security issues are not discussed in this memo.

9.  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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