3.1.b (vi) DHCP Protocol Operations

3.1.b (vi) DHCP Protocol Operations

DHCPv6 has some different protocol messages and sequences. here is the process of how a IPv6 host gets a DHCPv6 address from a Cisco router:

1. Client sends DHCPv6 Solicit
2. Router sends a DHCPv6 advertise
3. Client sends a DHCPv6 request
4. Router sends a DHCPv6 reply

file:///tmp/ct_tmp/1.png

These messages still go out as UDP, however the ports they use are different, they use (client) 546, (router) 547.

Here’s the original solicit message from client to all:

file:///tmp/ct_tmp/1.png

here’s the advertisement from the router to the client:
file:///tmp/ct_tmp/1.png

Here’s the request from the client to the router:
file:///tmp/ct_tmp/1.png

Here’s the final reply from the router to the client:
file:///tmp/ct_tmp/1.png