DHCP Relay

A DHCP relay expects a DHCP server in the overlay. These steps are required to allow DHCP requests and responses over the overlay

Reference architecture:
  • A hub HIPswitch with an external DHCP server device.
  • Two or more spoke HIPswitches with independent IP and DHCP scopes.
  1. Add a device to the HIPswitch protecting the DHCP server. The DHCP server must be deployed so it will route traffic to DHCP relay enabled spokes from this hub HIPswitch.
  2. Assign each spoke HIPswitch an Overlay Gateway IP and enable the DHCP relay feature with the IP address of the remote DHCP server.
  3. Create a device for the Overlay Gateway IP of each spoke HIPswitch.
  4. Add the new Overlay Gateway IP device to the Overlay with the DHCP Server device.
  5. Establish trust between the HIPswitch Overlay Gateway address and the DHCP server.
  6. Configure DHCP subnets in the DHCP server corresponding to the Overlay Gateway IP address and netmask of each spoke HIPswitch.
  7. Enable device discovery on each spoke HIPswitch so newly-detected DHCP clients will be reported to the Conductor.