Router(config-if)#passive-interface
Router(config-router)#passive-interface gigabitethernet 0/1
Router(config)#passive-interface gigabitethernet 0/1
Router(config-if)#passive-interface default
out for OSPF?
Router#show interfaces
Router#show ip routes
Router#show ip ospf interface
Router#show ip ospf brief
Chapter 3
IP Connectivity (Domain 3)
Router(config)#interface fa 0/1
Router(config-if)#ip address 192.168.1.5 255.255.255.0