The following examples illustrate a single-VRF and multi-VRF deployment for DHCP Server. Both examples illustrate a small campus network where DHCP Relay is on the same switch as DHCP Server. In larger networks, you can configure the relay on a neighboring switch instead of the switch that hosts DHCP Server.
DHCP Server manages local attached VLANs and IP subnets and supports local configuration or cloud configuration of the DHCP Server. This deployment requires that you deploy DHCP Server with DHCP Relay configured on the same switch as the server.
Configure each VLAN that will use the DHCP service with a Management CLIP IP interface.
Configure DHCP Server on the management CLIP IP interface of two High Availability (HA) peer switches for redundancy.
Configure two DHCP Relay forwarding paths; one path to the local management CLIP IP and one path to the management CLIP IP of the peer switch. For small networks, configure the relay on the same switch as DHCP Server.
Redundant DHCP Servers manage local attached VLANs and IP subnets within multiple VRFs. DHCP Server supports local configuration or cloud configuration.
Configure DHCP Server on the management CLIP IP interface of two HA peer switches for redundancy.
Configure DHCP Relay with two forwarding paths (one path to the local management CLIP IP and one path to the management CLIP IP of the peer switch). For smaller networks, configure the relay on the same switch as DHCP Server.
Configure inter-VRF routes or IS-IS accept policies so that both switches can forward DHCP requests and redundancy communication between VRFs.
