A Gateway DHCP server is attached to a tier-0 or tier-1 gateway, and it provides DHCP service to the networks (overlay segments), which are directly connected to the gateway and configured to use a Gateway DHCP server.
In this case, the DHCP server that is created on the tier-0 or tier-1 gateway will have an internal relay so that the connected segments can forward traffic to the DHCP servers, which you specified in the DHCP server profile.
The following figure shows a sample network topology with Gateway DHCP servers that are servicing networks, which are directly connected to the tier-0 and tier-1 gateway.
In this network topology, a Gateway DHCP server is configured on the following networks:
- Network-1 is connected to the service interface of the tier-1 gateway.
- Network-2 is connected to the downlink interface of the tier-1 gateway.
- Network-3 is connected to the downlink or service interface of the tier-0 gateway.
Prerequisites
- Add a DHCP Server Profile. For example, assume that the profile is named as My-Gateway-DHCP-Profile.
- Ensure that you have specified the Gateway IP address of the IPv4 subnet in the segments that are directly connected to the tier-0 or tier-1 gateway.
- Attach the DHCP server profile to the directly connected tier-0 or tier-1 gateway. For a detailed procedure, see Attach a DHCP Profile to a Tier-0 or Tier-1 Gateway.