If the edge gateway for your vCloud Director organization virtual datacenter has been converted to an advanced edge gateway, you can use the vCloud Director tenant portal to configure the edge gateway's DHCP relay capability. The NSX software in your vCloud Director environment provides the capability for the edge gateway to relay DHCP messages to DHCP servers external to your vCloud Director organization virtual datacenter.

As described in the NSX Administration Guide, the DHCP servers can be specified using an existing IP set, IP address block, domain, or a combination of all of these. DHCP messages are relayed to every specified DHCP server.

You must also configure at least one DHCP relay agent. A DHCP relay agent is an interface on the edge gateway from which the DHCP requests are relayed to the external DHCP servers.

For the ability to use the vCloud Director tenant portal to work with an edge gateway's settings, the edge gateway must have already been converted to an advanced edge gateway using the Convert to Advanced Gateway action on the edge gateway in the vCloud Director Web console. See the vCloud Director Administrator's Guide for details.

If you want to use an IP set to specify a DHCP server, verify that IP set exists as a grouping object available to the edge gateway. See Create an IP Set for Use in Firewall Rules and DHCP Relay Configuration.

1

Launch the tenant portal using the following steps.

a

Log in to the vCloud Director Web console and navigate to the edge gateway.

b

Right-click the name of the edge gateway and click Edge Gateway Services in the context menu.

The tenant portal opens in a new browser tab and displays the Edge Gateway screen for that edge gateway.

2

In the tenant portal, navigate to DHCP > Relay.

3

Use the on-screen fields to specify the DHCP servers by IP addresses, domain names, or IP sets.

You select from existing IP sets using the + icon to browse the available IP sets.

4

Configure a DHCP relay agent and add its configuration to the on-screen table by clicking the + icon, selecting a vNIC and its gateway IP address, and then clicking Keep.

By default, the Gateway IP Address matches the primary address of the selected vNIC. You can keep the default or select an alternate address if one is available on that vNIC.

5

Click Save changes.