After you
Configure
BGP, configure a BGP peer with
MP-BGP for
IPv4 or IPv6 unicast for either of the following reasons:
To have your BGP peer carry
IPv6 unicast routes, configure MP-BGP with the Address Family Type
of IPv6 and Subsequent Address Family of Unicast so
that the peer can send BGP updates that include IPv6 unicast routes.
BGP peering (Local Address and Peer Address) can still both be IPv4
addresses, or they can both be IPv6 addresses.
To perform BGP peering over IPv6 addresses (Local
Address and Peer Address use
IPv6 addresses).
The following task shows how to
enable a BGP peer with MP-BGP so it can carry IPv6 unicast routes,
and so it can peer using IPv6 addresses.
The task also shows
how to view the unicast or multicast route tables, and how to view
the forwarding table, the BGP local RIB, and BGP RIB Out (routes
sent to neighbors) to see routes from the unicast or multicast route
table or a specific address family (IPv4 or IPv6).