enable
configure terminal
interface GigabitEthernet0/0/0
ip ospf 10 area 0
interface GigabitEthernet0/0/1
ip ospf 10 area 0
router ospf 10
 router-id 4.4.4.4
 passive-interface GigabitEthernet0/0/0
 auto-cost reference-bandwidth 1000
end