log file ospfd.log ! hostname rt3 ! password 1 ! ! debug ospf event ! debug ospf zebra ! interface lo ip ospf area 0.0.0.0 ip ospf hello-interval 2 ip ospf dead-interval 8 ! interface eth-rt1 ip ospf area 0.0.0.0 ip ospf hello-interval 2 ip ospf dead-interval 8 ip ospf bfd ! interface eth-rt4 ip ospf area 0.0.0.0 ip ospf hello-interval 2 ip ospf dead-interval 8 ! router ospf ospf router-id 3.3.3.3 router-info area 0.0.0.0 !