3Com WX3000 Configuring the Dhcp Relay Agent, Dhcp Relay Agent Configuration Task List

Configuring the DHCP Relay Agent

If a device belongs to an IRF fabric, you need to enable the UDP Helper function on it before configuring it as a DHCP relay agent.

DHCP Relay Agent Configuration Task List

Complete the following tasks to configure the DHCP relay agent:

Task	Remarks
Correlating a DHCP Server Group with a Relay Agent Interface	Required
Configuring DHCP Relay Agent Security Functions	Optional
Configuring the DHCP Relay Agent to Support Option 82	Optional

Correlating a DHCP Server Group with a Relay Agent Interface

To enhance reliability, you can set multiple DHCP servers on the same network. These DHCP servers form a DHCP server group. When an interface of the relay agent establishes a correlation with the DHCP server group, the interface will forward received DHCP packets to all servers in the server group.

Follow these steps to correlate a DHCP server group with a relay agent interface:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Configure the DHCP server IP		Required
	dhcp-server groupNo ip	By default, no DHCP server IP
address(es) in a specified
	ip-address&<1-8>	address is configured in a
DHCP server group
		DHCP server group.
	interface interface-type	Required
Map an interface to a DHCP	interface-number	By default, a VLAN interface is
server group		not mapped to any DHCP
	dhcp-server groupNo
		server group.

2-4