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BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0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BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0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 configuration 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BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0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#
Configure IPv6 NH Automatically for IPv6 Prefix Advertised over
IPv4 Neighbor
You can configure the system to pick the next hop IPv6 address dynamically for IPv6 prefix advertised over an IPv4 neighbor
configured under IPv6 address family. If there is no IPv6 address configured on the local interface, the system uses the IPv4
mapped IPv6 address. If there are multiple IPv6 addresses configured on the interface, the system uses the lowest IPv6 address
configured on that interface. If the configuration is already present and a new IPv6 address, which is lower than the lowest
existing address, is assigned to one of the peer interfaces, that address is not used as the NH until you flap the interface
manually.
Figure 26. Configure IPv6 NH to advertise IPv6 prefix over IPv4 neighbor
To enable BGP to pick the next hop IPv6 address automatically for IPv6 prefix advertised over an IPv4 neighbor, use the
following commands.
Enable the system to pick the next hop IPv6 address dynamically for IPv6 prefix advertised over an IPv4 neighbor.
ROUTER-BGP mode mode
neighbor {ipaddress | peer-group-name} auto-local-address
Enter either the neighbor IP address or the name of the peer group.
NOTE: If outbound policy is applied along with auto-local-address enabled, then policy takes precedence.
Border Gateway Protocol (BGP) 223