!
feature bgp
!
! Interfaces
!
interface Ethernet8/1
  no switchport
  ip address 10.192.0.1/30
  no shutdown
exit
!
interface Loopback0
  ip address 20.0.0.1/32
  no shutdown
exit
!
! BGP
!
route-map neighbor-in permit 65535
exit
route-map neighbor-out permit 65535
exit
!
router bgp 4
  router-id 20.0.0.1
  neighbor 10.192.0.2 remote-as 65535
    update-source Ethernet8/1
    address-family ipv4 unicast
      next-hop-self
      route-map neighbor-in in
      route-map neighbor-out out
    exit
  exit
  address-family ipv4 unicast
    network 20.0.0.0/24
  exit
exit
!
ip route 20.0.0.0/24 null 0
!
! Create external advertisements
!
interface Loopback1
  ip address 100.0.0.1/24
exit
router bgp 4
  address-family ipv4 unicast
    network 100.0.0.0/24
  exit
exit
ip prefix-list prefix-list-0 seq 1 permit 100.0.0.0/24
route-map neighbor-out permit 1
  match ip address prefix-list prefix-list-0
  set metric 0
  set as-path prepend 4 4 2 1
exit
