Networking · Episode 23 · 2:55

Relay DHCP for IPv4 and IPv6

Configure DHCPv4 and DHCPv6 relay on Cisco IOS XE, request leases from Linux clients, and compare client addresses with server bindings.

English narration and on-screen explanations. Read the narration transcript.

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Narration transcript

The English narration in this video. Select a time to watch that moment.

  1. Two clients sit on different networks from their address servers.

  2. Configure the IPv4 pool and exclude the gateway and reserved addresses.

  3. The client gets no offer before the relay is configured.

  4. Add the helper address on the interface facing the IPv4 client.

  5. Request a lease, then check the assigned address and default route.

  6. Check the binding on the server and verify that the client reaches its gateway.

  7. Release the IPv4 lease, then request a new one.

  8. Configure the IPv6 pool on the other router.

  9. The IPv6 client needs a relay to reach that pool.

  10. Add the IPv6 relay destination and request a lease again.

  11. Verify that the server has a binding for the leased IPv6 address.

  12. Check the address on the client and ping its local IPv6 gateway.

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