Citrix SD-WAN

Configuring DHCP server and DHCP relay

July 30, 2021

Contributed by:

C S

Configure DHCP Server and DHCP Relay using the configuration editor

You can configure the DHCP server and DHCP relay settings for the appliances on your network using the configuration editor. The configuration is pushed to the appliances in the SD-WAN network through the change management process.

To configure a site as a DHCP server using the configuration editor:

Navigate to Configuration Editor > Sites > [Site Name] > DHCP > Server Subnets. Click +.
Select a configured Routing Domain, if multiple domains are present.
Select the Virtual interface to be used to receive the DHCP requests. The IP subnet used by the DHCP server to provides addresses for is auto-populated.
Enter the Domain Name, Primary DNS, and Secondary DNS. The DHCP Server forwards this information to the clients.
Click Enable to enable the subnet.
Configure dynamic IP address pools that will be used to allocate IP addresses to clients. Specify the range starting and ending IP address, and select the Option set.

Note

The DHCP option sets are groups of DHCP settings that can be applied to individual IP address ranges. To create DHCP option sets, navigate to Global > DHCP Options Sets. Select the required DHCP options and specify a value for it.
Configure individual hosts that require a fixed IP address based on the MAC address. Also known as Reserver IP address. Select the Fixed IP Address, MAC Address, and Option Set.

Note

For fixed IP addresses, the Gateway IP is set by configuring the Router option in the DHCP option set.

To configure a site as a DHCP relay using the configuration editor:

Navigate to Configuration Editor > Sites > [Site Name] > DHCP > Relays. Click +.
Select a configured Routing Domain, if multiple domains are present.
Select a Virtual Interface that communicates to a remote DHCP Server.
Enter the DHCP Server IP that the relay will use to forward the request and response from the clients.

You can configure a single DHCP Relay using a common Virtual Network Interface and point it to multiple DHCP Servers.

Note

One Relay Agent is spawned per Virtual Interface and a total of 16 DHCP servers can be configured per Relay Agent. A maximum of 16 Relay Agents can be configured on a site.

DHCP server configuration editor relay virtual interface

To view a list of Clients from the DHCP Server Database, in the web management interface, navigate to Monitor > DHCP Server/Relay.

DHCP monitoring

Configuring an SD-WAN appliance as a DHCP server or a DHCP relay using appliance settings

You can manually configure an individual SD-WAN appliance as a DHCP server or a DHCP replay from the appliance settings page.

To enable DHCP server on an SD-WAN appliance:

Navigate to Configuration > Appliance Settings > Network Adapters. In the Network Adapters page, look for the Management Interface DHCP Server pane.
Click Enable DHCP Server to start the server, then enter the Lease Time (in minutes), the Domain Name, and define the IP Address range by entering a Start IP Address and an End IP Address.

Note

The server IP address pool should be within the management network.
Click Change Settings to finish configuring the DHCP Server.

Note

If you plan to use DHCP Server on an SD-WAN appliance configured for High Availability (HA), do not configure the service on both the Active and Standby appliance. Doing so leads to duplicate IP addresses on the defined management network.
Click Show Client to view the current DHCP clients, and click Clear Clients to release the DHCP Client leases

To enable DHCP relay service on an SD-WAN appliance:

Navigate to Configuration > Appliance Settings > Network Adapters. In the Network Adapters page, look for the Management Interface DHCP Relay pane.
Click Enable DHCP Relay check box to enable the service. Enter the DHCP Server IP Address and click Change Settings to begin using your appliance as a DHCP Relay Agent.

Note

If you plan to use the DHCP Relay service on an appliance configured for High Availability (HA), do not configure the service on both the Active and Standby appliances. Doing so leads to duplicate IP addresses on the defined management network.

The official version of this content is in English. Some of the Cloud Software Group documentation content is machine translated for your convenience only. Cloud Software Group has no control over machine-translated content, which may contain errors, inaccuracies or unsuitable language. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, suitability, or correctness of any translations made from the English original into any other language, or that your Cloud Software Group product or service conforms to any machine translated content, and any warranty provided under the applicable end user license agreement or terms of service, or any other agreement with Cloud Software Group, that the product or service conforms with any documentation shall not apply to the extent that such documentation has been machine translated. Cloud Software Group will not be held responsible for any damage or issues that may arise from using machine-translated content.

Was this helpful

Configuring DHCP server and DHCP relay

July 30, 2021

Contributed by:

C S

July 30, 2021

Contributed by:

C S

Configuring DHCP server and DHCP relay

Configure DHCP Server and DHCP Relay using the configuration editor

Configuring an SD-WAN appliance as a DHCP server or a DHCP relay using appliance settings

In this article