Brocade Network OS Administrator’s Guide v4.1.1 User Manual
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• You can configure the feature in standalone mode (applicable switches only) or VCS mode.
• You can configure up to four DHCP server IP addresses per interface. When multiple addresses are
configured, the relay agent relays the packets to all server addresses.
• The DHCP server and clients it communicates with can be attached to different Virtual Forwarding
and Routing (VRF) instances. When clients and the DHCP server are on different VRFs, use the
use-vrf vrf-name option with the ip dhcp relay address command, where vrf-name is the VRF
where the DHCP server is located. For more information on VRF support for the IP DHCP Relay,
refer to
Perform the following steps to configure an IP DHCP Relay:
1. In privileged EXEC mode, issue the configure terminal command to enter the global configuration
mode.
2. Enter the interface command followed by the interface ID to enter the interface configuration mode
for the Ve or physical interface where you want to configure the IP DHCP Relay.
3. Enter the ip dhcp relay address ip-addr use-vrf vrf-name command where ip-addr is the IP
address of the DHCP server. Use the use-vrf vrf-name option if the DHCP server is on a different
VRF instance than the interface where the client is connected.
4. To remove the IP DHCP Relay address enter the no ip dhcp relay address ip-addr use-vrf vrf-
name command.
Example: Standalone mode
The following is an example of configuring an IP DHCP Relay address on a 10
GbE interface.
switch# configure terminal
Entering configuration mode terminal
switch(config)# int Te 3/1
switch(config-if-te-3/1)# ip dhcp relay address 100.1.1.2
The following is an example of configuring an IP DHCP Relay address on virtual
Ethernet interface 100.
switch# configure terminal
Entering configuration mode terminal
switch(config)# int Ve 100
switch(config-Ve-100)# ip dhcp relay address 100.1.1.2
To remove the IP DHCP Relay address use the no option in the ip dhcp relay
address ip-addr command as in the following example:
switch(config-if)# no ip dhcp relay address 100.1.1.2
Configuring IP DHCP Relay
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Network OS Administrator’s Guide
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