CiscoRouter(config)#config t
Enter configuration commands, one per line.  End with CNTL/Z.
CiscoRouter(config)#interface ethernet 1
CiscoRouter(config-if)#ip address 192.168.1.1 255.255.255.0
CiscoRouter(config-if)#no shudown
CiscoRouter(config-if)#exit
CiscoRouter(config)#exit
CiscoRouter#