Cisco Cisco Firepower Management Center 4000

DHCP provides configuration parameters to Internet hosts. A DHCP client that has not yet acquired an 
IP address cannot communicate directly with a DHCP server outside its broadcast domain. To allow 
DHCP clients to communicate with DHCP servers, you can configure DHCP relay instances to handle 
cases where the client is not on the same broadcast domain as the server.

You can set up DHCP relay for each virtual router you configure. By default, this feature is disabled. 
You can enable either DHCPv4 relay or DHCPv6 relay.

See the following sections for more information:

Control

Series 3

The following procedure explains how to set up DHCPv4 relay on a virtual router.

Admin/Network Admin

Select 

.

The Device Management page appears.

Next to the device where you want to set up DHCP relay, click the edit icon (

).

The Interfaces tab for that device appears.

Click 

.

The Virtual Routers tab appears.

Next to the virtual router where you want to set up DHCP relay, click the edit icon (

).

The Edit Virtual Router pop-up window appears.

To set up DHCP relay for DHCPv4, select the 

 check box.

Under the 

 field, type a server IP address.

Click 

.

The IP address is added to the 

 field. You can add up to four DHCP servers.

To delete a DHCP server, click the delete icon (

) next to the server IP address.

In the 

 field, type the maximum number of hops from 1 to 255.

Click 

.

Your changes are saved. Note that your changes do not take effect until you apply the device 
configuration; see