💾 Archived View for gemini.bortzmeyer.org › rfc-mirror › rfc2096.txt captured on 2023-05-24 at 21:08:05.
⬅️ Previous capture (2021-11-30)
-=-=-=-=-=-=-
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.
Table of Contents
1. Introduction .......................................... 1
2. The SNMP Network Management Framework ................. 2
2.1 Object Definitions ................................... 2
3. Overview .............................................. 2
4. Definitions ........................................... 3
5. Acknowledgements ...................................... 20
6. References ............................................ 20
7. Security Considerations ............................... 21
8. Author's Address ...................................... 21
1. 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.
Baker Standards Track [Page 1]
RFC 2096 IP Forwarding Table MIB January 1997
2. 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.
2.1. 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.
3. 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.
Baker Standards Track [Page 2]
RFC 2096 IP Forwarding Table MIB January 1997
4. 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: fred@cisco.com
"
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
Baker Standards Track [Page 3]
RFC 2096 IP Forwarding Table MIB January 1997
-- 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
Baker Standards Track [Page 4]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 5]
RFC 2096 IP Forwarding Table MIB January 1997
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."
Baker Standards Track [Page 6]
RFC 2096 IP Forwarding Table MIB January 1997
::= { 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
Baker Standards Track [Page 7]
RFC 2096 IP Forwarding Table MIB January 1997
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-
Baker Standards Track [Page 8]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 9]
RFC 2096 IP Forwarding Table MIB January 1997
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 }
Baker Standards Track [Page 10]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 11]
RFC 2096 IP Forwarding Table MIB January 1997
-- 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
Baker Standards Track [Page 12]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 13]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 14]
RFC 2096 IP Forwarding Table MIB January 1997
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-
Baker Standards Track [Page 15]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 16]
RFC 2096 IP Forwarding Table MIB January 1997
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 }
Baker Standards Track [Page 17]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 18]
RFC 2096 IP Forwarding Table MIB January 1997
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
Baker Standards Track [Page 19]
RFC 2096 IP Forwarding Table MIB January 1997
5. 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.
6. 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.
Baker Standards Track [Page 20]
RFC 2096 IP Forwarding Table MIB January 1997
7. Security Considerations
Security is an objective not in this MIB view.
8. Author's Address
Fred Baker
Cisco Systems
519 Lado Drive
Santa Barbara, California 93111
Phone: +1 805 681 0115
EMail: fred@cisco.com
Baker Standards Track [Page 21]