interface R1-eth0
 ip ospf dead-interval 4
 ip ospf hello-interval 1
interface R1-eth1
 ip ospf dead-interval 4
 ip ospf hello-interval 1
interface R1-eth2
 ip ospf dead-interval 4
 ip ospf hello-interval 1
interface R1-eth3
 ip ospf dead-interval 4
 ip ospf hello-interval 1
interface R1-eth4
 ip ospf dead-interval 4
 ip ospf hello-interval 1
interface R1-eth5
 ip ospf dead-interval 4
 ip ospf hello-interval 1
router ospf
 network 10.10.0.0/16 area 0
 network 10.20.0.0/16 area 0
 network 1.1.1.1/32 area 0