Router B Configuration
configure vlan default delete ports all
create vlan "b_a"
enable ipforwarding ipv6 vlan b_a
configure vlan b_a add ports 25 untagged
configure b_a ipaddress 2001:db8:3000::2/48
configure bgp AS-number 3300
configure bgp routerid 10.20.20.2
enable bgp community format AS-number:number
create bgp neighbor 2001:db8:3000::1 remote-AS-number 2100
enable bgp neighbor 2001:db8:3000::1
enable bgp neighbor 2001:db8:3000::1 capability ipv6-unicast
enable bgp neighbor 2001:db8:3000::1 capability ipv6-multicast
enable bgp