3Com 3CRWEASYA73, WL-575 manual Dhcp Relay Commands, Dhcp-relay enable

CHAPTER 6: COMMAND LINE INTERFACE

DHCP Relay Commands

Dynamic Host Configuration Protocol (DHCP) can dynamically allocate an IP address and other configuration information to network clients that broadcast a request. To receive the broadcast request, the DHCP server would normally have to be on the same subnet as the client. However, when the access point’s DHCP relay agent is enabled, received client requests can be forwarded directly by the access point to a known DHCP server on another subnet. Responses from the DHCP server are returned to the access point, which then broadcasts them back to clients.

Table 15 DHCP Relay Commands

Command	Function	Mode	Page
dhcp-relay enable	Enables the DHCP relay agent	GC	6-42
dhcp-relay	Sets the primary and secondary DHCP server	GC	6-43
	address
show dhcp-relay	Shows current DHCP relay configuration	Exec	6-43
	settings

dhcp-relay enable

This command enables the access point’s DHCP relay agent. Use the no form to disable the agent.

Syntax

[no] dhcp-relay enable

Default Setting

Disabled

Command Mode

Global Configuration

Command Usage

•For the DHCP relay agent to function, the primary DHCP server must be configured using the dhcp-relay primary command. A secondary DHCP server does not need to be configured, but it is recommended.

•If there is no response from the primary DHCP server, and a secondary server has been configured, the agent will then attempt to send DHCP requests to the secondary server.

6-42