IP-FORWARD-MIB DEFINITIONS ::= BEGIN

IMPORTS

MODULE-IDENTITY, OBJECT-TYPE,
IpAddress, Integer32, Gauge32,
Counter32                          FROM SNMPv2-SMI
RowStatus                          FROM SNMPv2-TC

MODULE-COMPLIANCE, OBJECT-GROUP    FROM SNMPv2-CONF
InterfaceIndexOrZero               FROM IF-MIB
ip                                 FROM IP-MIB
IANAipRouteProtocol                FROM IANA-RTPROTO-MIB
InetAddress, InetAddressType,
InetAddressPrefixLength,
InetAutonomousSystemNumber         FROM INET-ADDRESS-MIB;

ipForward MODULE-IDENTITY

LAST-UPDATED "200602010000Z"
ORGANIZATION
       "IETF IPv6 Working Group
        http://www.ietf.org/html.charters/ipv6-charter.html"
CONTACT-INFO
       "Editor:
        Brian Haberman
        Johns Hopkins University - Applied Physics Laboratory
        Mailstop 17-S442
        11100 Johns Hopkins Road
        Laurel MD,  20723-6099  USA

        Phone: +1-443-778-1319
        Email: brian@innovationslab.net

        Send comments to <ipv6@ietf.org>"
DESCRIPTION
       "The MIB module for the management of CIDR multipath IP
        Routes.

        Copyright (C) The Internet Society (2006).  This version
        of this MIB module is a part of RFC 4292; see the RFC
        itself for full legal notices."

REVISION      "200602010000Z"
DESCRIPTION
       "IPv4/v6 version-independent revision.  Minimal changes
        were made to the original RFC 2096 MIB to allow easy
        upgrade of existing IPv4 implementations to the
        version-independent MIB.  These changes include:

        Adding inetCidrRouteDiscards as a replacement for the
        deprecated ipRoutingDiscards and ipv6DiscardedRoutes
        objects.

        Adding a new conformance statement to support the
        implementation of the IP Forwarding MIB in a
        read-only mode.

        The inetCidrRouteTable replaces the IPv4-specific
        ipCidrRouteTable, its related objects, and related
        conformance statements.

        Published as RFC 4292."

REVISION      "199609190000Z"
DESCRIPTION
       "Revised to support CIDR routes.
        Published as RFC 2096."

REVISION      "199207022156Z"
DESCRIPTION
       "Initial version, published as RFC 1354."
::= { ip 24 }

inetCidrRouteNumber OBJECT-TYPE

SYNTAX     Gauge32
MAX-ACCESS read-only
STATUS     current
DESCRIPTION
       "The number of current inetCidrRouteTable entries that
        are not invalid."

::= { ipForward 6 }

inetCidrRouteDiscards OBJECT-TYPE

SYNTAX     Counter32
MAX-ACCESS read-only
STATUS     current
DESCRIPTION
       "The number of valid route entries discarded from the
        inetCidrRouteTable.  Discarded route entries do not
        appear in the inetCidrRouteTable.  One possible reason
        for discarding an entry would be to free-up buffer space
        for other route table entries."
::= { ipForward 8 }

– Inet CIDR Route Table

– The Inet CIDR Route Table deprecates and replaces the – ipCidrRoute Table currently in the IP Forwarding Table MIB. – It adds IP protocol independence.

inetCidrRouteTable OBJECT-TYPE

SYNTAX     SEQUENCE OF InetCidrRouteEntry
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "This entity's IP Routing table."
REFERENCE
       "RFC 1213 Section 6.6, The IP Group"
::= { ipForward 7 }

inetCidrRouteEntry OBJECT-TYPE

SYNTAX     InetCidrRouteEntry
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "A particular route to a particular destination, under a
        particular policy (as reflected in the
        inetCidrRoutePolicy object).

        Dynamically created rows will survive an agent reboot.

        Implementers need to be aware that if the total number
        of elements (octets or sub-identifiers) in
        inetCidrRouteDest, inetCidrRoutePolicy, and
        inetCidrRouteNextHop exceeds 111, then OIDs of column
        instances in this table will have more than 128 sub-
        identifiers and cannot be accessed using SNMPv1,
        SNMPv2c, or SNMPv3."
INDEX {
    inetCidrRouteDestType,
    inetCidrRouteDest,
    inetCidrRoutePfxLen,
    inetCidrRoutePolicy,
    inetCidrRouteNextHopType,
    inetCidrRouteNextHop
    }
::= { inetCidrRouteTable 1 }

InetCidrRouteEntry ::= SEQUENCE {

    inetCidrRouteDestType     InetAddressType,
    inetCidrRouteDest         InetAddress,
    inetCidrRoutePfxLen       InetAddressPrefixLength,
    inetCidrRoutePolicy       OBJECT IDENTIFIER,
    inetCidrRouteNextHopType  InetAddressType,
    inetCidrRouteNextHop      InetAddress,
    inetCidrRouteIfIndex      InterfaceIndexOrZero,
    inetCidrRouteType         INTEGER,
    inetCidrRouteProto        IANAipRouteProtocol,
    inetCidrRouteAge          Gauge32,
    inetCidrRouteNextHopAS    InetAutonomousSystemNumber,
    inetCidrRouteMetric1      Integer32,
    inetCidrRouteMetric2      Integer32,
    inetCidrRouteMetric3      Integer32,
    inetCidrRouteMetric4      Integer32,
    inetCidrRouteMetric5      Integer32,
    inetCidrRouteStatus       RowStatus
}

inetCidrRouteDestType OBJECT-TYPE

SYNTAX     InetAddressType
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "The type of the inetCidrRouteDest address, as defined
        in the InetAddress MIB.

        Only those address types that may appear in an actual
        routing table are allowed as values of this object."
REFERENCE "RFC 4001"
::= { inetCidrRouteEntry 1 }

inetCidrRouteDest OBJECT-TYPE

SYNTAX     InetAddress
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "The destination IP address of this route.

        The type of this address is determined by the value of
        the inetCidrRouteDestType object.

        The values for the index objects inetCidrRouteDest and
        inetCidrRoutePfxLen must be consistent.  When the value
        of inetCidrRouteDest (excluding the zone index, if one
        is present) is x, then the bitwise logical-AND
        of x with the value of the mask formed from the
        corresponding index object inetCidrRoutePfxLen MUST be
        equal to x.  If not, then the index pair is not
        consistent and an inconsistentName error must be
        returned on SET or CREATE requests."
::= { inetCidrRouteEntry 2 }

inetCidrRoutePfxLen OBJECT-TYPE

SYNTAX     InetAddressPrefixLength
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "Indicates the number of leading one bits that form the
        mask to be logical-ANDed with the destination address
        before being compared to the value in the

        inetCidrRouteDest field.

        The values for the index objects inetCidrRouteDest and
        inetCidrRoutePfxLen must be consistent.  When the value
        of inetCidrRouteDest (excluding the zone index, if one
        is present) is x, then the bitwise logical-AND
        of x with the value of the mask formed from the
        corresponding index object inetCidrRoutePfxLen MUST be
        equal to x.  If not, then the index pair is not
        consistent and an inconsistentName error must be
        returned on SET or CREATE requests."
::= { inetCidrRouteEntry 3 }

inetCidrRoutePolicy OBJECT-TYPE

SYNTAX     OBJECT IDENTIFIER
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "This object is an opaque object without any defined
        semantics.  Its purpose is to serve as an additional
        index that may delineate between multiple entries to
        the same destination.  The value { 0 0 } shall be used
        as the default value for this object."
::= { inetCidrRouteEntry 4 }

inetCidrRouteNextHopType OBJECT-TYPE

SYNTAX     InetAddressType
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "The type of the inetCidrRouteNextHop address, as
        defined in the InetAddress MIB.

        Value should be set to unknown(0) for non-remote
        routes.

        Only those address types that may appear in an actual
        routing table are allowed as values of this object."
REFERENCE "RFC 4001"
::= { inetCidrRouteEntry 5 }

inetCidrRouteNextHop OBJECT-TYPE

SYNTAX     InetAddress
MAX-ACCESS not-accessible
STATUS     current
DESCRIPTION
       "On remote routes, the address of the next system en

        route.  For non-remote routes, a zero length string.

        The type of this address is determined by the value of
        the inetCidrRouteNextHopType object."
::= { inetCidrRouteEntry 6 }

inetCidrRouteIfIndex OBJECT-TYPE

SYNTAX     InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS     current
DESCRIPTION
       "The ifIndex value that identifies the local interface
        through which the next hop of this route should be
        reached.  A value of 0 is valid and represents the
        scenario where no interface is specified."
::= { inetCidrRouteEntry 7 }

inetCidrRouteType OBJECT-TYPE

SYNTAX     INTEGER {
            other    (1), -- not specified by this MIB
            reject   (2), -- route that discards traffic and
                          --   returns ICMP notification
            local    (3), -- local interface
            remote   (4), -- remote destination
            blackhole(5)  -- route that discards traffic
                          --   silently
         }
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 destination.

        Routes that 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 that, if matched, discards
        the message as unreachable and returns a notification
        (e.g., ICMP error) to the message sender.  This is used
        in some protocols as a means of correctly aggregating
        routes.

        blackhole(5) refers to a route that, if matched,
        discards the message silently."
::= { inetCidrRouteEntry 8 }

inetCidrRouteProto OBJECT-TYPE

SYNTAX     IANAipRouteProtocol
MAX-ACCESS read-only
STATUS     current
DESCRIPTION
       "The routing mechanism via which this route was learned.
        Inclusion of values for gateway routing protocols is
        not intended to imply that hosts should support those
        protocols."
::= { inetCidrRouteEntry 9 }

inetCidrRouteAge OBJECT-TYPE

SYNTAX     Gauge32
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."
::= { inetCidrRouteEntry 10 }

inetCidrRouteNextHopAS OBJECT-TYPE

SYNTAX     InetAutonomousSystemNumber
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 inetCidrRouteProto
        value.  When this object is unknown or not relevant, its
        value should be set to zero."
DEFVAL { 0 }
::= { inetCidrRouteEntry 11 }

inetCidrRouteMetric1 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 inetCidrRouteProto
        value.  If this metric is not used, its value should be
        set to -1."
DEFVAL { -1 }
::= { inetCidrRouteEntry 12 }

inetCidrRouteMetric2 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 inetCidrRouteProto
        value.  If this metric is not used, its value should be
        set to -1."
DEFVAL { -1 }
::= { inetCidrRouteEntry 13 }

inetCidrRouteMetric3 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 inetCidrRouteProto
        value.  If this metric is not used, its value should be
        set to -1."
DEFVAL { -1 }
::= { inetCidrRouteEntry 14 }

inetCidrRouteMetric4 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 inetCidrRouteProto
        value.  If this metric is not used, its value should be
        set to -1."
DEFVAL { -1 }
::= { inetCidrRouteEntry 15 }

inetCidrRouteMetric5 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 inetCidrRouteProto
        value.  If this metric is not used, its value should be
        set to -1."
DEFVAL { -1 }
::= { inetCidrRouteEntry 16 }

inetCidrRouteStatus OBJECT-TYPE

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

        A row entry cannot be modified when the status is
        marked as active(1)."
::= { inetCidrRouteEntry 17 }

– Conformance information

ipForwardConformance

OBJECT IDENTIFIER ::= { ipForward 5 }

ipForwardGroups

OBJECT IDENTIFIER ::= { ipForwardConformance 1 }

ipForwardCompliances

OBJECT IDENTIFIER ::= { ipForwardConformance 2 }

– Compliance statements

ipForwardFullCompliance MODULE-COMPLIANCE

 STATUS     current
 DESCRIPTION
        "When this MIB is implemented for read-create, the
         implementation can claim full compliance.

         There are a number of INDEX objects that cannot be
         represented in the form of OBJECT clauses in SMIv2,
         but for which there are compliance requirements,
         expressed in OBJECT clause form in this description:

         -- OBJECT      inetCidrRouteDestType
         -- SYNTAX      InetAddressType (ipv4(1), ipv6(2),
         --                              ipv4z(3), ipv6z(4))
         -- DESCRIPTION
         --     This MIB requires support for global and
         --     non-global ipv4 and ipv6 addresses.

         --
         -- OBJECT      inetCidrRouteDest
         -- SYNTAX      InetAddress (SIZE (4 | 8 | 16 | 20))
         -- DESCRIPTION
         --     This MIB requires support for global and
         --     non-global IPv4 and IPv6 addresses.
         --
         -- OBJECT      inetCidrRouteNextHopType
         -- SYNTAX      InetAddressType (unknown(0), ipv4(1),
         --                              ipv6(2), ipv4z(3)
         --                              ipv6z(4))
         -- DESCRIPTION
         --     This MIB requires support for global and
         --     non-global ipv4 and ipv6 addresses.
         --
         -- OBJECT      inetCidrRouteNextHop
         -- SYNTAX      InetAddress (SIZE (0 | 4 | 8 | 16 | 20))
         -- DESCRIPTION
         --     This MIB requires support for global and
         --     non-global IPv4 and IPv6 addresses.
         "

MODULE -- this module
MANDATORY-GROUPS { inetForwardCidrRouteGroup }

OBJECT        inetCidrRouteStatus
SYNTAX        RowStatus { active(1), notInService (2) }
WRITE-SYNTAX  RowStatus { active(1), notInService (2),
                          createAndGo(4), destroy(6) }
DESCRIPTION  "Support for createAndWait is not required."
::= { ipForwardCompliances 3 }

ipForwardReadOnlyCompliance MODULE-COMPLIANCE

STATUS     current
DESCRIPTION
        "When this MIB is implemented without support for read-
         create (i.e., in read-only mode), the implementation can
         claim read-only compliance."
MODULE -- this module
MANDATORY-GROUPS { inetForwardCidrRouteGroup }

OBJECT      inetCidrRouteIfIndex
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteType
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteNextHopAS
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteMetric1
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteMetric2
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteMetric3
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteMetric4
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteMetric5
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."

OBJECT      inetCidrRouteStatus
SYNTAX      RowStatus { active(1) }
MIN-ACCESS  read-only
DESCRIPTION
   "Write access is not required."
::= { ipForwardCompliances 4 }

– units of conformance

inetForwardCidrRouteGroup OBJECT-GROUP

OBJECTS { inetCidrRouteDiscards,
          inetCidrRouteIfIndex, inetCidrRouteType,
          inetCidrRouteProto, inetCidrRouteAge,
          inetCidrRouteNextHopAS, inetCidrRouteMetric1,
          inetCidrRouteMetric2, inetCidrRouteMetric3,
          inetCidrRouteMetric4, inetCidrRouteMetric5,
          inetCidrRouteStatus, inetCidrRouteNumber
    }
STATUS     current
DESCRIPTION
       "The IP version-independent CIDR Route Table."
::= { ipForwardGroups 4 }

– Deprecated Objects

ipCidrRouteNumber OBJECT-TYPE

SYNTAX     Gauge32
MAX-ACCESS read-only
STATUS     deprecated
DESCRIPTION
       "The number of current ipCidrRouteTable entries that are
        not invalid.  This object is deprecated in favor of
        inetCidrRouteNumber and the inetCidrRouteTable."
::= { 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, policy routing, and Classless – Inter-Domain Routing.

ipCidrRouteTable OBJECT-TYPE

SYNTAX     SEQUENCE OF IpCidrRouteEntry
MAX-ACCESS not-accessible
STATUS     deprecated
DESCRIPTION
       "This entity's IP Routing table.  This table has been
        deprecated in favor of the IP version neutral
        inetCidrRouteTable."
REFERENCE
       "RFC 1213 Section 6.6, The IP Group"
::= { ipForward 4 }

ipCidrRouteEntry OBJECT-TYPE

SYNTAX     IpCidrRouteEntry
MAX-ACCESS not-accessible
STATUS     deprecated
DESCRIPTION
       "A particular route to a particular destination, 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     deprecated
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     deprecated
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 Address 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 ipCidrRouteDest."
::= { 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 (0..2147483647)
MAX-ACCESS read-only
STATUS     deprecated
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     deprecated
DESCRIPTION
       "On remote routes, the address of the next system en
        route; Otherwise, 0.0.0.0."
::= { ipCidrRouteEntry 4 }

ipCidrRouteIfIndex OBJECT-TYPE

SYNTAX     Integer32
MAX-ACCESS read-create
STATUS     deprecated
DESCRIPTION
       "The ifIndex value that 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 that discards traffic
            local    (3), -- local interface
            remote   (4)  -- remote destination
         }
MAX-ACCESS read-create
STATUS     deprecated
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 destination.

        Routes that 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 that, 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     deprecated
DESCRIPTION
       "The routing mechanism via which this route was learned.
        Inclusion of values for gateway routing protocols is
        not intended to imply that hosts should support those
        protocols."
::= { ipCidrRouteEntry 7 }

ipCidrRouteAge OBJECT-TYPE

SYNTAX     Integer32
MAX-ACCESS read-only
STATUS     deprecated
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     deprecated
DESCRIPTION
       "A reference to MIB definitions specific to the
        particular routing protocol that is responsible 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 identifier, 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     deprecated
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     deprecated
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     deprecated
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     deprecated
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     deprecated
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     deprecated
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     deprecated
DESCRIPTION
       "The row status variable, used according to row
        installation and removal conventions."
::= { ipCidrRouteEntry 16 }

– compliance statements

ipForwardCompliance MODULE-COMPLIANCE

 STATUS     deprecated
 DESCRIPTION
        "The compliance statement for SNMPv2 entities that
         implement the ipForward MIB.

         This compliance statement has been deprecated and
         replaced with ipForwardFullCompliance and
         ipForwardReadOnlyCompliance."

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     deprecated
DESCRIPTION
       "The CIDR Route Table.

        This group has been deprecated and replaced with
        inetForwardCidrRouteGroup."
::= { 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 destination, 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
        Address 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 ipForwardDest."
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 (0..2147483647)
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 ipForwardProto
        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 either
        define a set of values that 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 system en
        route; otherwise, 0.0.0.0."
::= { ipForwardEntry 4 }

ipForwardIfIndex OBJECT-TYPE

SYNTAX     Integer32
MAX-ACCESS read-create
STATUS     obsolete
DESCRIPTION
       "The ifIndex value that 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 destination.

        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 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 ipForwardType 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 routing 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 that is responsible 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 identifier, 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 that
         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