hostname xrv2
interface Loopback0
 ipv4 address 1.0.0.2 255.255.255.255
!
interface GigabitEthernet0/0/0/0
 ipv4 address 10.1.2.2 255.255.255.252
 no shutdown
!
interface GigabitEthernet0/0/0/1
 ipv4 address 10.2.3.1 255.255.255.252
 no shutdown
!
interface GigabitEthernet0/0/0/2
 ipv4 address 10.2.5.1 255.255.255.252
 no shutdown
!
router ospf 1
 area 0
  interface Loopback0
  !
  interface GigabitEthernet0/0/0/0
   network point-to-point
  !
  interface GigabitEthernet0/0/0/1
   cost 100
   network non-broadcast
   priority 2
   neighbor 10.2.3.2
  !
  interface GigabitEthernet0/0/0/2
   cost 100
   network point-to-point
  !
 !
!
end