Concept Guide

Following is the output of show ip bgp ipv6 unicast summary command for the above conguration example.
R1#show ip bgp ipv6 unicast summary
BGP router identifier 1.1.1.1, local AS number 10
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
2 neighbor(s) using 24576 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.2 200 10 20 0 0 0 00:06:11 0
2001::2 200 40 45 0 0 0 00:03:14 0
R1#
Example of enabling BGP and address family conguration in router (R2)
Following is an example to enable BGP and address family conguration for the neighbor R1 (20.20.20.1) in the router R2.
R2(conf)# router bgp 200
R2(conf-router_bgp)# neighbor 20.20.20.1 remote-as 10
R2(conf-router_bgp)# neighbor 20.20.20.1 no shutdown
R2(conf-router_bgp)# neighbor 2001::1 remote-as 10
R2(conf-router_bgp)# neighbor 2001::1 no shutdown
R2(conf-router_bgp)# address-family ipv4 multicast
R2(conf-router_bgp_af)# neighbor 20.20.20.1 activate
R2(conf-router_bgp_af)# exit
R2(conf-router_bgp)# address-family ipv6 unicast
R2(conf-router_bgpv6_af)# neighbor 20.20.20.1 activate
R2(conf-router_bgpv6_af)# neighbor 2001::1 activate
R2(conf-router_bgpv6_af)#exit
Following is the sample output for show ip bgp summary command.
R2#show ip bgp summary
BGP router identifier 2.2.2.2, local 200
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
2 neighbor(s) using 40960 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.1 10 10 20 0 0 0 00:06:11 0
2001::1 10 40 45 0 0 0 00:03:14 0
Following is the sample output of show ip bgp ipv4 multicast summary command.
R2# show ip bgp ipv4 multicast summary
BGP router identifier 2.2.2.2, local AS number 200
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
1 neighbor(s) using 24576 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.1 10 10 20 0 0 0 00:06:11 0
R2#
Following is the output of show ip bgp ipv6 unicast summary command for the above conguration example.
R2#show ip bgp ipv6 unicast summary
BGP router identifier 2.2.2.2, local AS number 200
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
2 neighbor(s) using 24576 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
20.20.20.1 10 10 20 0 0 0 00:06:11 0
2001::1 10 40 45 0 0 0 00:03:14 0
R2#
240
Border Gateway Protocol (BGP)