RFC1162 - Connectionless Network Protocol (ISO 8473) and End

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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
  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 RFC1052, 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
RFC1067, 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: RFC1065, which defined the Structure of Management
Information (SMI), and RFC1066, 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 RFC1109, 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,
RFC1155 [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, RFC1156 [4]; and, the Simple Network
Management Protocol, RFC1157 [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
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