conf t
!
hostname R3
!
int lo 0
 ipv4 add 3.3.3.3/32
!
int lo 10
 ipv4 add 10.10.10.10/32
 ipv4 add 20.20.20.20/32 secondary
 ipv4 add 30.30.30.30/32 secondary
 ipv4 add 40.40.40.40/32 secondary
 ipv4 add 50.50.50.50/32 secondary
!
int gi0/0/0/1
 ipv4 add 192.168.23.3/24
 no sh
!
router ospf 1
 area 0
  int lo 0
   passive 
  !
  int gi0/0/0/1
   net point-to-point
  !
 !
!
router bgp 3
 bgp unsafe-ebgp-policy
 !
 add ipv4 uni
  net 10.10.10.10/32
  net 20.20.20.20/32
  net 30.30.30.30/32
  net 40.40.40.40/32
  net 50.50.50.50/32
 !
 neighbor 1.1.1.1
  remote-as 1
  update-source lo0
  ebgp-multihop 255
  add ipv4 uni
  !
 !
!