Cisco Cisco IOS Software Release 12.0(21)S

BGP 4 MIB Support for per-Peer Received Routes

Feature Overview

Cisco IOS Release: Multiple releases (see the Feature History table)

AFIs and SAFIs

Table 2

lists the AFI and SAFI values that can be assigned to or held by the cbgpRouteAfi and

cbgpRouteSafi indexes, respectively.

Table 2

also displays the network address prefix type that can be

held by specific combinations of AFIs and SAFIs. The type of network address prefix that can be carried
in a BGP update message depends on the combination of AFIs and SAFIs.

Note

A VPN-IPv4 address is a 12-byte quantity that begins with an 8-byte Route Distinguisher (RD) and ends
with a 4-byte IPv4 address. Any bits beyond the length specified by cbgpRouteAddrPrefixLen are
represented as zeros.

Table 1

MIB Indexes of the cbgpRouterTable

MIB Indexes

Description

cbgpRouteAfi

Represents the AFI of the network layer protocol that
is associated with the route.

cbgpRouteSafi

Represents the SAFI of the route. It gives additional
information about the type of the route. The AFI and
SAFI are used together to determine which local RIB
(Loc-RIB) contains a particular route.

cbgpRoutePeerType

Represents the type of network layer address that is
stored in the cbgpRoutePeer object.

cbgpRoutePeer

Represents the network layer address of the peer from
which the route information has been learned.

cbgpRouteAddrPrefix

Represents the network address prefix that is carried in
a BGP update message.

See

Table 2

for information about the types of network

layer addresses that can be stored in specific types of
AFI and SAFI objects.

cbgpRouteAddrPrefixLen

Represents the length in bits of the network address
prefix in the NLRI field.

See

Ta ble 3

for a description of the 13 possible entries.

Table 2

AFIs and SAFIs

AFI SAFI

Type

ipv4(1) unicast(1)

IPv4

address

ipv4(1) multicast(2)

IPv4

address

ipv4(1) vpn(128)

VPN-IPv4

address

ipv6(2) unicast(1)

IPv6

address