This command enables the DHCPv4 client on an in-band interface so that it can acquire network information, such as the IP address, subnet mask, and default gateway, from a network DHCP server. When DHCP is enabled on the interface, the system automatically deletes all manually configured IPv4 addresses on the interface.
To enable the DHCPv4 client on an in-band interface and send DHCP client messages with the client identifier option, use the ip address dhcp client-id configuration command in interface configuration mode.
| Default | Disabled |
| Format | ip address dhcp [client-id] |
| Mode | Interface Config |
Example: In the following example, DHCPv4 is enabled on interface 0/4/1.
(router1) #config (router1) (Config)#interface 0/4/1 (router1) (Interface 0/4/1)#ip address dhcp
