Controller Services
Summit WM3000 Series Controller System Reference Guide248
4 To delete an existing DHCP pool from the list of those available to the controller, highlight the pool
from within the Network Pool field and click the Delete button.
5 Click the Add button to create a new IP address range for a target host pool. For more information,
see “Adding a New DHCP Pool” on page 241.
Configuring the DHCP Server Relay
Refer to the Relay tab to view the current DHCP Relay configurations for available controller VLAN
interfaces. The Relay tab also displays the VLAN interfaces for which the DHCP Relay is enabled/
configured. The Gateway Interface address information is helpful in selecting the interface suiting the
data routing requirements between the External DHCP Server and DHCP client (present on one of the
controller’s available VLANs).
DHCP Server and relay can run on different controller VLAN interfaces.
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 internal DHCP server on subnet3 to provide DHCP requests for clients in
subnet3. This is independent of the DHCP relay configuration. You cannot run internal DHCP Server on
subnet1 to provide IP addresses to DHCP clients requesting IP addresses using DHCP relay.
To view and configure DHCP relay information:
1 Select Services > DHCP Server from the main menu tree.
2 Click the Relay tab.
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