Switch#configure terminal
Switch(config)#hostname S3550
S3550(config)#interface f0/1
S3550(config-if)#no switchport
S3550(config-if)#ip address 10.1.1.1 255.255.255.0
S3550(config-if)#interface f0/2
S3550(config-if)#no switchport
S3550(config-if)#ip address 10.2.2.1 255.255.255.0
S3550#show running-config
S3550#copy running-config startup-config