F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

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43BConfiguring the DHCPv6 relay agent

DHCPv6 relay agent can be configured only at the CLI.

245B

Feature and hardware compatibility

Hardware DHCPv6

rela

ent

com

atible

F1000-A-EI/F1000-S-EI Yes

F1000-E Yes

F5000 Yes

Firewall module Yes

U200-A Yes

U200-S No

246B

Overview

A DHCPv6 client usually uses a multicast address to contact the DHCPv6 server on the local link to obtain

an IPv6 address and other configuration parameters. As shown in

2902HFigure 376, if the DHCPv6 server

resides on another subnet, the DHCPv6 client can contact the server through a DHCPv6 relay agent, so

you do not need to deploy a DHCPv6 server on each subnet.

Figure 376 Typical DHCPv6 relay agent application

2903HFigure 377 shows how the DHCPv6 client obtains an IPv6 address and other network configuration

parameters from the DHCPv6 server through the DHCPv6 relay agent, using the process of rapid

assignment involving two messages as an example.

1. The DHCPv6 client sends a Solicit message containing the Rapid Commit option to the multicast

address FF02::1:2 of all DHCPv6 servers and relay agents.

2. After receiving the Solicit message, the DHCPv6 relay agent encapsulates the message into the

Relay Message option of a Relay-forward message, and sends the message to the DHCPv6 server.