Configuring The Dhcpv6 Relay Agent; Configuration Prerequisites; Configuration Procedure - HP A5120 EI Series Configuration Manual

The DHCPv6 client sends a Solicit message containing the Rapid Commit option to the multicast
1.
address FF02::1:2 of all the DHCPv6 servers and relay agents.
After receiving the Solicit message, the DHCPv6 relay agent encapsulates the message into the
2.
Relay Message option of a Relay-forward message, and sends the message to the DHCPv6 server.
After obtaining the Solicit message from the Relay-forward message, the DHCPv6 server selects an
3.
IPv6 address and other required parameters, and adds them to the reply which is encapsulated
within the Relay Message option of a Relay-reply message. The DHCPv6 server then sends the
Relay-reply message to the DHCPv6 relay agent.
The DHCPv6 relay agent obtains the reply from the Relay-reply message and sends the reply to the
4.
DHCPv6 client.
The DHCPv6 client uses the IPv6 address and other network parameters assigned by the DHCPv6 server
to perform network configuration.

Configuring the DHCPv6 relay agent

Upon receiving a Solicit message from a DHCPv6 client, the interface that operates as a DHCPv6 relay
agent encapsulates the request into a Relay-forward message and forwards the message to the specified
DHCPv6 server, which then assigns an IPv6 address and other configuration parameters to the DHCPv6
client.

Configuration prerequisites

Before you configure the DHCPv6 relay agent, enable IPv6 by using the ipv6 command in system view.

Configuration procedure

Follow these steps to configure the DHCPv6 relay agent:
To do...
Enter system view
Enter interface view
Enable DHCPv6 relay agent on
the interface and specify a
DHCPv6 server
Use the command...
system-view
interface interface-type interface-
number
ipv6 dhcp relay server-address ipv6-
address [ interface interface-type
interface-number ]
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Remarks
—
—
Required
By default, DHCPv6 relay
agent is disabled and no
DHCPv6 server is specified on
the interface.