Commands:
Router(config)# ip route destination-prefix destination-prefix-mask {address | interface} [distance] [tag tag] [permanent]
Router(config)# ip route 0.0.0.0 0.0.0.0 [next-hop-ip-address | exit-interface] Router(config-router)# default-information originate
Router(config)# ip default-network ip-network-address Router(config)# ip classless