Configuring The Dhcp Server Relay - Brocade Communications Systems RFS6000 System Reference Manual

3. Click the Edit button to modify the IP address range displayed. For more information, see
4. To delete an existing DHCP pool from the list of those available to the controller, highlight the
5. Click the Add button to create a new IP address range for a target host pool. For more

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).
NOTE
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 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 and configure DHCP relay information:
1. Select Services > DHCP Server from the main menu tree.
2. Click the Relay tab.
Brocade Mobility RFS6000 and RFS7000 System Reference Guide
53-1001858-01
"Editing the properties of an existing DHCP pool"
pool from within the Network Pool field and click the Delete button.
information, see "Adding a new DHCP pool"
DHCP server settings
on page 263.
on page 264.
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