RFC2096

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Network Working Group F. Baker Request for Comments: 2096 Cisco Systems Obsoletes: 1354 January 1997 Category: Standards Track

                    IP Forwarding Table MIB

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Introduction

This memo defines an update to RFC 1354, "IP Forwarding Table MIB", for Classless Inter-Domain Routing (CIDR). That document was developed by the Router Requirements Working Group as an update to RFC 1213's ipRouteTable, with the display of multiple routes as a primary objective. The significant difference between this MIB and RFC 1354 is the recognition (explicitly discussed but by consensus left to future work) that CIDR routes may have the same network number but different network masks. Note that this MIB obsoletes a number of objects from RFC 1354. The reader should pay careful attention to the STATUS field.

The SNMP Network Management Framework

The SNMP Network Management Framework presently consists of three major components. They are:

o the SMI, described in RFC 1902 [1], - the mechanisms used

    for describing and naming objects for the purpose of
    management.

o the MIB-II, STD 17, RFC 1213 [2], - the core set of

    managed objects for the Internet suite of protocols.

o the protocol, RFC 1157 [6] and/or RFC 1905 [4], - the

    protocol for accessing managed information.

Textual conventions are defined in RFC 1903 [3], and conformance statements are defined in RFC 1904 [5].

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

Object Definitions

Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) defined in the SMI. In particular, each object object type is named by an OBJECT IDENTIFIER, an administratively assigned name. The object type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the descriptor, to refer to the object type.

Overview

The MIB consists of two tables and two global objects.

(1) The object ipForwardNumber indicates the number of

    current routes.  This is primarily to avoid having to
    read the table in order to determine this number.

(2) The ipForwardTable updates the RFC 1213 ipRouteTable to

    display multipath IP Routes.  This is in turn obsoleted
    by the ipCidrRouteTable.

(3) The ipCidrRouteTable updates the RFC 1213 ipRouteTable to

    display multipath IP Routes having the same network
    number but differing network masks.

Definitions

IP-FORWARD-MIB DEFINITIONS ::= BEGIN

IMPORTS

MODULE-IDENTITY, OBJECT-TYPE, IpAddress, Integer32, Gauge32
    FROM SNMPv2-SMI
RowStatus
    FROM SNMPv2-TC
ip
    FROM RFC1213-MIB
MODULE-COMPLIANCE, OBJECT-GROUP
    FROM SNMPv2-CONF;

ipForward MODULE-IDENTITY

LAST-UPDATED "9609190000Z"     -- Thu Sep 26 16:34:47 PDT 1996
ORGANIZATION "IETF OSPF Working Group"
CONTACT-INFO
 "        Fred Baker
  Postal: Cisco Systems
          519 Lado Drive
          Santa Barbara, California 93111
  Phone:  +1 805 681 0115
  Email:  [email protected]
  "
DESCRIPTION
        "The MIB module for the display of CIDR multipath IP Routes."
REVISION      "9609190000Z"
DESCRIPTION
        "Revisions made by the OSPF WG."
::= { ip 24 }

ipCidrRouteNumber OBJECT-TYPE

SYNTAX   Gauge32
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "The number of current ipCidrRouteTable entries
   that are not invalid."
::= { ipForward 3 }

-- IP CIDR Route Table

-- The IP CIDR Route Table obsoletes and replaces the ipRoute -- Table current in MIB-I and MIB-II and the IP Forwarding Table. -- It adds knowledge of the autonomous system of the next hop, -- multiple next hops, and policy routing, and Classless

-- Inter-Domain Routing.

ipCidrRouteTable OBJECT-TYPE

SYNTAX   SEQUENCE OF IpCidrRouteEntry
MAX-ACCESS not-accessible
STATUS   current
DESCRIPTION
   "This entity's IP Routing table."
REFERENCE
   "RFC 1213 Section 6.6, The IP Group"
::= { ipForward 4 }

ipCidrRouteEntry OBJECT-TYPE

SYNTAX   IpCidrRouteEntry
MAX-ACCESS not-accessible
STATUS   current
DESCRIPTION
   "A particular route to  a  particular  destina-
   tion, under a particular policy."
INDEX {
    ipCidrRouteDest,
    ipCidrRouteMask,
    ipCidrRouteTos,
    ipCidrRouteNextHop
    }
::= { ipCidrRouteTable 1 }

IpCidrRouteEntry ::=

SEQUENCE {
    ipCidrRouteDest
        IpAddress,
    ipCidrRouteMask
        IpAddress,
    ipCidrRouteTos
         Integer32,
    ipCidrRouteNextHop
        IpAddress,
    ipCidrRouteIfIndex
        Integer32,
    ipCidrRouteType
        INTEGER,
    ipCidrRouteProto
        INTEGER,
    ipCidrRouteAge
        Integer32,
    ipCidrRouteInfo
        OBJECT IDENTIFIER,
    ipCidrRouteNextHopAS
        Integer32,
    ipCidrRouteMetric1
        Integer32,
    ipCidrRouteMetric2
        Integer32,
    ipCidrRouteMetric3
        Integer32,
    ipCidrRouteMetric4
        Integer32,
    ipCidrRouteMetric5
        Integer32,
    ipCidrRouteStatus
        RowStatus
}

ipCidrRouteDest OBJECT-TYPE

SYNTAX   IpAddress
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "The destination IP address of this route.
   This object may not take a Multicast (Class  D)
   address value.
   Any assignment (implicit or  otherwise)  of  an
   instance  of  this  object to a value x must be
   rejected if the bitwise logical-AND of  x  with
   the  value of the corresponding instance of the
   ipCidrRouteMask object is not equal to x."
::= { ipCidrRouteEntry 1 }

ipCidrRouteMask OBJECT-TYPE

SYNTAX   IpAddress
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "Indicate the mask to be logical-ANDed with the
   destination  address  before  being compared to
   the value  in  the  ipCidrRouteDest  field.   For
   those  systems  that  do  not support arbitrary
   subnet masks, an agent constructs the value  of
   the  ipCidrRouteMask  by  reference to the IP Ad-
   dress Class.
   Any assignment (implicit or  otherwise)  of  an
   instance  of  this  object to a value x must be
   rejected if the bitwise logical-AND of  x  with
   the  value of the corresponding instance of the
   ipCidrRouteDest object is not equal to ipCidrRoute-
   Dest."
::= { ipCidrRouteEntry 2 }

-- The following convention is included for specification -- of TOS Field contents. At this time, the Host Requirements -- and the Router Requirements documents disagree on the width -- of the TOS field. This mapping describes the Router -- Requirements mapping, and leaves room to widen the TOS field -- without impact to fielded systems.

ipCidrRouteTos OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "The policy specifier is the IP TOS Field.  The encoding
   of IP TOS is as specified  by  the  following convention.
   Zero indicates the default path if no more  specific
   policy applies.
   +-----+-----+-----+-----+-----+-----+-----+-----+
   |                 |                       |     |
   |   PRECEDENCE    |    TYPE OF SERVICE    |  0  |
   |                 |                       |     |
   +-----+-----+-----+-----+-----+-----+-----+-----+
            IP TOS                IP TOS
       Field     Policy      Field     Policy
       Contents    Code      Contents    Code
       0 0 0 0  ==>   0      0 0 0 1  ==>   2
       0 0 1 0  ==>   4      0 0 1 1  ==>   6
       0 1 0 0  ==>   8      0 1 0 1  ==>  10
       0 1 1 0  ==>  12      0 1 1 1  ==>  14
       1 0 0 0  ==>  16      1 0 0 1  ==>  18
       1 0 1 0  ==>  20      1 0 1 1  ==>  22
       1 1 0 0  ==>  24      1 1 0 1  ==>  26
       1 1 1 0  ==>  28      1 1 1 1  ==>  30"
::= { ipCidrRouteEntry 3 }

ipCidrRouteNextHop OBJECT-TYPE

SYNTAX   IpAddress
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "On remote routes, the address of the next sys-
   tem en route; Otherwise, 0.0.0.0."
::= { ipCidrRouteEntry 4 }

ipCidrRouteIfIndex OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "The ifIndex value which identifies  the  local
   interface  through  which  the next hop of this
   route should be reached."
DEFVAL { 0 }
::= { ipCidrRouteEntry 5 }

ipCidrRouteType OBJECT-TYPE

SYNTAX   INTEGER {
            other    (1), -- not specified by this MIB
            reject   (2), -- route which discards traffic
            local    (3), -- local interface
            remote   (4)  -- remote destination
         }
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "The type of route.  Note that local(3)  refers
   to  a route for which the next hop is the final
   destination; remote(4) refers to  a  route  for
   which  the  next  hop is not the final destina-
   tion.
   Routes which do not result in traffic forwarding or
   rejection should not be displayed even if the
   implementation keeps them stored internally.
   reject (2) refers to a route which, if matched, discards
   the message as unreachable. This is used in some
   protocols as a means of correctly aggregating routes."
::= { ipCidrRouteEntry 6 }

ipCidrRouteProto OBJECT-TYPE

SYNTAX   INTEGER {
            other     (1),  -- not specified
            local     (2),  -- local interface
            netmgmt   (3),  -- static route
            icmp      (4),  -- result of ICMP Redirect
                    -- the following are all dynamic
                    -- routing protocols
            egp        (5),  -- Exterior Gateway Protocol
            ggp        (6),  -- Gateway-Gateway Protocol
            hello      (7),  -- FuzzBall HelloSpeak
            rip        (8),  -- Berkeley RIP or RIP-II
            isIs       (9),  -- Dual IS-IS
            esIs       (10), -- ISO 9542
            ciscoIgrp  (11), -- Cisco IGRP
            bbnSpfIgp  (12), -- BBN SPF IGP
            ospf       (13), -- Open Shortest Path First
            bgp        (14), -- Border Gateway Protocol
            idpr       (15), -- InterDomain Policy Routing
            ciscoEigrp (16)  -- Cisco EIGRP
         }
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "The routing mechanism via which this route was
   learned.  Inclusion of values for gateway rout-
   ing protocols is not  intended  to  imply  that
   hosts should support those protocols."
::= { ipCidrRouteEntry 7 }

ipCidrRouteAge OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-only
STATUS   current
DESCRIPTION
   "The number of seconds  since  this  route  was
   last  updated  or  otherwise  determined  to be
   correct.  Note that no semantics of  `too  old'
   can  be implied except through knowledge of the
   routing  protocol  by  which  the   route   was
   learned."
DEFVAL  { 0 }
::= { ipCidrRouteEntry 8 }

ipCidrRouteInfo OBJECT-TYPE

SYNTAX   OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "A reference to MIB definitions specific to the
   particular  routing protocol which is responsi-
   ble for this route, as determined by the  value
   specified  in the route's ipCidrRouteProto value.
   If this information is not present,  its  value
   should be set to the OBJECT IDENTIFIER { 0 0 },
   which is a syntactically valid object  identif-
   ier, and any implementation conforming to ASN.1
   and the Basic Encoding Rules must  be  able  to
   generate and recognize this value."
::= { ipCidrRouteEntry 9 }

ipCidrRouteNextHopAS OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "The Autonomous System Number of the Next  Hop.
   The  semantics of this object are determined by
   the routing-protocol specified in  the  route's
   ipCidrRouteProto  value. When  this object is
   unknown or not relevant its value should be set
   to zero."
DEFVAL { 0 }
::= { ipCidrRouteEntry 10 }

ipCidrRouteMetric1 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "The primary routing  metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipCidrRouteProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipCidrRouteEntry 11 }

ipCidrRouteMetric2 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipCidrRouteProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipCidrRouteEntry 12 }

ipCidrRouteMetric3 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipCidrRouteProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipCidrRouteEntry 13 }

ipCidrRouteMetric4 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipCidrRouteProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipCidrRouteEntry 14 }

ipCidrRouteMetric5 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipCidrRouteProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipCidrRouteEntry 15 }

ipCidrRouteStatus OBJECT-TYPE

SYNTAX   RowStatus
MAX-ACCESS read-create
STATUS   current
DESCRIPTION
   "The row status variable, used according to
   row installation and removal conventions."
::= { ipCidrRouteEntry 16 }

-- conformance information

ipForwardConformance OBJECT IDENTIFIER ::= { ipForward 5 }

ipForwardGroups OBJECT IDENTIFIER ::= { ipForwardConformance 1 } ipForwardCompliances OBJECT IDENTIFIER ::= { ipForwardConformance 2 }

-- compliance statements

ipForwardCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION

   "The compliance statement for SNMPv2 entities
   which implement the ipForward MIB."

MODULE -- this module MANDATORY-GROUPS { ipForwardCidrRouteGroup }

= { ipForwardCompliances 1 }

-- units of conformance

ipForwardCidrRouteGroup OBJECT-GROUP

OBJECTS { ipCidrRouteNumber,
          ipCidrRouteDest, ipCidrRouteMask, ipCidrRouteTos,
          ipCidrRouteNextHop, ipCidrRouteIfIndex, ipCidrRouteType,
          ipCidrRouteProto, ipCidrRouteAge, ipCidrRouteInfo,
          ipCidrRouteNextHopAS, ipCidrRouteMetric1,
          ipCidrRouteMetric2, ipCidrRouteMetric3,
          ipCidrRouteMetric4, ipCidrRouteMetric5, ipCidrRouteStatus
    }
STATUS  current
DESCRIPTION
   "The CIDR Route Table."
::= { ipForwardGroups 3 }

-- Obsoleted Definitions - Objects

ipForwardNumber OBJECT-TYPE

SYNTAX   Gauge32
MAX-ACCESS read-only
STATUS   obsolete
DESCRIPTION
   "The number of current  ipForwardTable  entries
   that are not invalid."
::= { ipForward 1 }

-- IP Forwarding Table

-- The IP Forwarding Table obsoletes and replaces the ipRoute -- Table current in MIB-I and MIB-II. It adds knowledge of -- the autonomous system of the next hop, multiple next hop

-- support, and policy routing support.

ipForwardTable OBJECT-TYPE

SYNTAX   SEQUENCE OF IpForwardEntry
MAX-ACCESS not-accessible
STATUS   obsolete
DESCRIPTION
   "This entity's IP Routing table."
REFERENCE
   "RFC 1213 Section 6.6, The IP Group"
::= { ipForward 2 }

ipForwardEntry OBJECT-TYPE

SYNTAX   IpForwardEntry
MAX-ACCESS not-accessible
STATUS   obsolete
DESCRIPTION
   "A particular route to  a  particular  destina-
   tion, under a particular policy."
INDEX {
    ipForwardDest,
    ipForwardProto,
    ipForwardPolicy,
    ipForwardNextHop
    }
::= { ipForwardTable 1 }

IpForwardEntry ::=

SEQUENCE {
    ipForwardDest
        IpAddress,
    ipForwardMask
        IpAddress,
    ipForwardPolicy
         Integer32,
    ipForwardNextHop
        IpAddress,
    ipForwardIfIndex
        Integer32,
    ipForwardType
        INTEGER,
    ipForwardProto
        INTEGER,
    ipForwardAge
        Integer32,
    ipForwardInfo
        OBJECT IDENTIFIER,
    ipForwardNextHopAS
        Integer32,
    ipForwardMetric1
        Integer32,
    ipForwardMetric2
        Integer32,
    ipForwardMetric3
        Integer32,
    ipForwardMetric4
        Integer32,
    ipForwardMetric5
        Integer32
}

ipForwardDest OBJECT-TYPE

SYNTAX   IpAddress
MAX-ACCESS read-only
STATUS   obsolete
DESCRIPTION
   "The destination IP address of this route.   An
   entry  with  a value of 0.0.0.0 is considered a
   default route.
   This object may not take a Multicast (Class  D)
   address value.
   Any assignment (implicit or  otherwise)  of  an
   instance  of  this  object to a value x must be
   rejected if the bitwise logical-AND of  x  with
   the  value of the corresponding instance of the
   ipForwardMask object is not equal to x."
::= { ipForwardEntry 1 }

ipForwardMask OBJECT-TYPE

SYNTAX   IpAddress
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "Indicate the mask to be logical-ANDed with the
   destination  address  before  being compared to
   the value  in  the  ipForwardDest  field.   For
   those  systems  that  do  not support arbitrary
   subnet masks, an agent constructs the value  of
   the  ipForwardMask  by  reference to the IP Ad-
   dress Class.
   Any assignment (implicit or  otherwise)  of  an
   instance  of  this  object to a value x must be
   rejected if the bitwise logical-AND of  x  with
   the  value of the corresponding instance of the
   ipForwardDest object is not equal to ipForward-
   Dest."
DEFVAL { '00000000'h }      -- 0.0.0.0
::= { ipForwardEntry 2 }

-- The following convention is included for specification -- of TOS Field contents. At this time, the Host Requirements -- and the Router Requirements documents disagree on the width -- of the TOS field. This mapping describes the Router -- Requirements mapping, and leaves room to widen the TOS field -- without impact to fielded systems.

ipForwardPolicy OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-only
STATUS   obsolete
DESCRIPTION
   "The general set of conditions that would cause
   the  selection  of  one multipath route (set of
   next hops for a given destination) is  referred
   to as 'policy'.
   Unless the mechanism indicated by ipForwardPro-
   to specifies otherwise, the policy specifier is
   the IP TOS Field.  The encoding of IP TOS is as
    specified  by  the  following convention.  Zero
   indicates the default path if no more  specific
   policy applies.
   +-----+-----+-----+-----+-----+-----+-----+-----+
   |                 |                       |     |
   |   PRECEDENCE    |    TYPE OF SERVICE    |  0  |
   |                 |                       |     |
   +-----+-----+-----+-----+-----+-----+-----+-----+
            IP TOS                IP TOS
       Field     Policy      Field     Policy
       Contents    Code      Contents    Code
       0 0 0 0  ==>   0      0 0 0 1  ==>   2
       0 0 1 0  ==>   4      0 0 1 1  ==>   6
       0 1 0 0  ==>   8      0 1 0 1  ==>  10
       0 1 1 0  ==>  12      0 1 1 1  ==>  14
       1 0 0 0  ==>  16      1 0 0 1  ==>  18
       1 0 1 0  ==>  20      1 0 1 1  ==>  22
       1 1 0 0  ==>  24      1 1 0 1  ==>  26
       1 1 1 0  ==>  28      1 1 1 1  ==>  30
   Protocols defining 'policy' otherwise must  ei-
   ther define a set of values which are valid for
   this  object  or  must  implement  an  integer-
   instanced  policy table for which this object's
   value acts as an index."
::= { ipForwardEntry 3 }

ipForwardNextHop OBJECT-TYPE

SYNTAX   IpAddress
MAX-ACCESS read-only
STATUS   obsolete
DESCRIPTION
   "On remote routes, the address of the next sys-
   tem en route; Otherwise, 0.0.0.0."
::= { ipForwardEntry 4 }

ipForwardIfIndex OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "The ifIndex value which identifies  the  local
   interface  through  which  the next hop of this
   route should be reached."
DEFVAL { 0 }
::= { ipForwardEntry 5 }

ipForwardType OBJECT-TYPE

SYNTAX   INTEGER {
            other    (1), -- not specified by this MIB
            invalid  (2), -- logically deleted
            local    (3), -- local interface
            remote   (4)  -- remote destination
         }
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "The type of route.  Note that local(3)  refers
   to  a route for which the next hop is the final
   destination; remote(4) refers to  a  route  for
   which  the  next  hop is not the final destina-
   tion.
   Setting this object to the value invalid(2) has
   the  effect  of  invalidating the corresponding
   entry in the ipForwardTable object.   That  is,
   it  effectively  disassociates  the destination
   identified with said entry from the route iden-
   tified    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 current-
   ly  in  use.  Proper interpretation of such en-
   tries requires examination of the relevant  ip-
   ForwardType object."
DEFVAL { invalid }
::= { ipForwardEntry 6 }

ipForwardProto OBJECT-TYPE

SYNTAX   INTEGER {
            other     (1),  -- not specified
            local     (2),  -- local interface
            netmgmt   (3),  -- static route
            icmp      (4),  -- result of ICMP Redirect
                    -- the following are all dynamic
                    -- routing protocols
            egp       (5),  -- Exterior Gateway Protocol
            ggp       (6),  -- Gateway-Gateway Protocol
            hello     (7),  -- FuzzBall HelloSpeak
            rip       (8),  -- Berkeley RIP or RIP-II
            is-is     (9),  -- Dual IS-IS
            es-is     (10), -- ISO 9542
            ciscoIgrp (11), -- Cisco IGRP
            bbnSpfIgp (12), -- BBN SPF IGP
            ospf      (13), -- Open Shortest Path First
            bgp       (14), -- Border Gateway Protocol
            idpr      (15)  -- InterDomain Policy Routing
         }
MAX-ACCESS read-only
STATUS   obsolete
DESCRIPTION
   "The routing mechanism via which this route was
   learned.  Inclusion of values for gateway rout-
   ing protocols is not  intended  to  imply  that
   hosts should support those protocols."
::= { ipForwardEntry 7 }

ipForwardAge OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-only
STATUS   obsolete
DESCRIPTION
   "The number of seconds  since  this  route  was
   last  updated  or  otherwise  determined  to be
   correct.  Note that no semantics of  `too  old'
   can  be implied except through knowledge of the
   routing  protocol  by  which  the   route   was
   learned."
DEFVAL  { 0 }
::= { ipForwardEntry 8 }

ipForwardInfo OBJECT-TYPE

SYNTAX   OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "A reference to MIB definitions specific to the
   particular  routing protocol which is responsi-
   ble for this route, as determined by the  value
   specified  in the route's ipForwardProto value.
   If this information is not present,  its  value
   should be set to the OBJECT IDENTIFIER { 0 0 },
   which is a syntactically valid object  identif-
   ier, and any implementation conforming to ASN.1
   and the Basic Encoding Rules must  be  able  to
   generate and recognize this value."
::= { ipForwardEntry 9 }

ipForwardNextHopAS OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "The Autonomous System Number of the Next  Hop.
   When  this  is  unknown  or not relevant to the
   protocol indicated by ipForwardProto, zero."
DEFVAL { 0 }
::= { ipForwardEntry 10 }

ipForwardMetric1 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "The primary routing  metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipForwardProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipForwardEntry 11 }

ipForwardMetric2 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipForwardProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipForwardEntry 12 }

ipForwardMetric3 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipForwardProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipForwardEntry 13 }

ipForwardMetric4 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipForwardProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipForwardEntry 14 }

ipForwardMetric5 OBJECT-TYPE

SYNTAX   Integer32
MAX-ACCESS read-create
STATUS   obsolete
DESCRIPTION
   "An alternate routing metric  for  this  route.
   The  semantics of this metric are determined by
   the routing-protocol specified in  the  route's
   ipForwardProto  value.   If  this metric is not
   used, its value should be set to -1."
DEFVAL { -1 }
::= { ipForwardEntry 15 }

-- Obsoleted Definitions - Groups -- compliance statements

ipForwardOldCompliance MODULE-COMPLIANCE STATUS obsolete DESCRIPTION

   "The compliance statement for SNMP entities
   which implement the ipForward MIB."

MODULE -- this module MANDATORY-GROUPS { ipForwardMultiPathGroup }

= { ipForwardCompliances 2 }

ipForwardMultiPathGroup OBJECT-GROUP

OBJECTS { ipForwardNumber,
          ipForwardDest, ipForwardMask, ipForwardPolicy,
          ipForwardNextHop, ipForwardIfIndex, ipForwardType,
          ipForwardProto, ipForwardAge, ipForwardInfo,
          ipForwardNextHopAS,
          ipForwardMetric1, ipForwardMetric2, ipForwardMetric3,
          ipForwardMetric4, ipForwardMetric5
    }
STATUS  obsolete
DESCRIPTION
   "IP Multipath Route Table."
::= { ipForwardGroups 2 }

END

Acknowledgements

This work was originally performed by the Router Requirements Working Group at the request of the OSPF Working Group. This update was performed under the auspices of the OSPF Working Group. John Moy of Proteon Incorporated is the chair.

References

[1] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,

 "Structure of Management Information for version 2 of the
 Simple Network Management Protocol (SNMPv2)", RFC 1442,
 SNMP Research, Inc., Hughes LAN Systems, Dover Beach
 Consulting, Inc., Carnegie Mellon University, April 1993.

[2] Galvin, J., and K. McCloghrie, "Administrative Model for

 version 2 of the Simple Network Management Protocol
 (SNMPv2)", RFC 1445, Trusted Information Systems, Hughes
 LAN Systems, April 1993.

[3] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,

 "Protocol Operations for version 2 of the Simple Network
 Management Protocol (SNMPv2)", RFC 1448, SNMP Research,
 Inc., Hughes LAN Systems, Dover Beach Consulting, Inc.,
 Carnegie Mellon University, April 1993.

[4] McCloghrie, K., and M. Rose, "Management Information Base

 for Network Management of TCP/IP-based internets - MIB-
 II", STD 17, RFC 1213, Hughes LAN Systems, Performance
 Systems International, March 1991.

[5] Postel, J., "Internet Protocol", STD 5, RFC 791,

 USC/Information Sciences Institute, September 1981.

[6] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,

 "Textual Conventions for version 2 of the Simple Network
 Management Protocol (SNMPv2)", RFC 1443, SNMP Research,
 Inc., Hughes LAN Systems, Dover Beach Consulting, Inc.,
 Carnegie Mellon University, April 1993.

[7] Baker, F., "IP Forwarding Table MIB", RFC 1354, July 1992.

Security Considerations

Security is an objective not in this MIB view.

Author's Address

Fred Baker Cisco Systems 519 Lado Drive Santa Barbara, California 93111

Phone: +1 805 681 0115 EMail: [email protected]