!
hostname r7
ip forwarding
!
interface r7-eth0
 ip address 10.1.3.7/24
 ip ospf network broadcast
 ip ospf hello-interval 1
 ip ospf dead-interval 10
!
router ospf
  ospf router-id 7.7.7.7
  distance 20
  network 10.1.3.0/24 area 0
