Cisco IOS IP ConfigurationGuide, Release12.2 - Configuring DHCP - Cisco Systems
Router(config-if)# ip address dhcp [client-id interface name] [hostname host-name]
Router(config-if)# ip address dhcp [client-id interface name] [hostname host-name]
Configuring a Gateway of Last Resort Using IP Commands - Cisco Systems
ip default-gateway
ip default-network
ip route 0.0.0.0 0.0.0.0
ip default-gateway
ip default-network
ip route 0.0.0.0 0.0.0.0