Configuring DHCP DHCP Client Configuration
Configuration Guide  
  411
Switch(config)#interface gigabitEthernet 1/0/5
Switch(config-if)#no switchport
Switch(config-if)#ip address-alloc dhcp
Switch(config-if)#show ip interface brief
Interface       IP-Address                         Method     Status       Protocol     Shutdown
---------         ----------                                ------          ------          --------         --------
Gi1/0/5          192.168.0.100/24             DHCP        up               up                   no
Switch(config-if)#end
Switch#copy running-config startup-config