You can configure a BGP4+ neighbor with a global IPv6 address.
device# configure terminal
device(config)# router bgp
device(config-bgp-router)# local-as 1000
device(config-bgp-router)# neighbor 2001:db8:93e8:cc00::1 remote-as 1001
device(config-bgp-router)# address-family ipv6 unicast
device(config-bgp-ipv6u)# neighbor 2001:db8:93e8:cc00::1 activate
The following example summarizes the commands in this procedure.
device# configure terminal device(config)# router bgp device(config-bgp-router)# local-as 1000 device(config-bgp-router)# neighbor 2001:db8:93e8:cc00::1 remote-as 1001 device(config-bgp-router)# address-family ipv6 unicast device(config-bgp-ipv6u)# neighbor 2001:db8:93e8:cc00::1 activate