Installation guide

Switch Services
5-14
In the illustration above, a DHCP relay address has been configured on subnet 2 (The CLI equivalent is
“ip helper-address <subnet1 External DHCP Server IP > <subnet1 Interface Name>”). When configuring a DHCP
Relay address, specify the other interface where the external DHCP Server can be reached. In this example,
that interface is subnet1. The DHCP relay agent must listen on both subnet1 and subnet2. Consequently, the
DHCP Server cannot run on either subnet1 or subnet2 (it must be both).
However, you can run an onboard DHCP server on subnet3 to provide DHCP requests for clients in subnet3.
This is independent of the DHCP relay configuration. You cannot run onboard DHCP Server on subnet1 to
provide IP addresses to DHCP clients requesting IP addresses using DHCP relay.
To view DHCP relay information:
1. Select Services > DHCP Server from the main menu tree.
2. Click the Relay tab.