!PE11
config
!
router bgp 65000
 neighbor IBGP peer-group
 neighbor IBGP remote-as 65000
 neighbor IBGP extended-optional-parameters
 neighbor IBGP update-source lo
 neighbor 192.0.2.12 peer-group IBGP
 neighbor 192.0.2.13 peer-group IBGP
 neighbor 192.0.2.14 peer-group IBGP
 !
 address-family l2vpn evpn
  neighbor IBGP activate
  advertise-all-vni
 exit-address-family
exit
!
end