Installation manual

Chapter 5: Configuring the CopperJet
5.12 Configuring DHCP Relay
DHCP Relay provides a means for relaying DHCP and BOOTP requests from a subnet to
which no DHCP server is directly connected to one or more DHCP servers on other
subnets. The DHCP Relay Agent listens for DHCP and BOOTP queries and responses. When
a query is received from a client, DHCP Relay forwards it to the list of DHCP servers
specified. When a reply is received from a server, it is broadcast or unicast (according to
the client's request) on the network from which the original request came.
From the Configuration menu, click on DHCP relay. The DHCP Relay page is displayed:
5.12.1 Enabling/disabling DHCP relay
Click on the Enable/Disable button at the top of the page. If you click on the
Disable button, DHCP server is disabled and the button changes to Enable.
Note: The Enable/Disable button is only visible when the DHCP Server of the CopperJet
is disabled. DHCP Relay only works when the DHCP Server is disabled.
5.12.2 Configuring DHCP relay on specific interfaces
You can configure DHCP relay to run on one or more specific interfaces. By default, once
enabled, DHCP relay operates on all available IP interfaces. You may set DHCP relay to run
on one of your LAN interfaces and the WAN interface, so that it can listen for replies from a
DHCP server at your ISP. This allows you to set DHCP server to run on a different interface
at the same time.
To specify an interface for DHCP relay to run on:
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