Protocols And Standards; Configuring The Dhcpv6 Client; Configuration Prerequisites; Configuration Procedure - 3Com S7906E Configuration Manual

Figure 1-4 Operating process of a DHCPv6 relay agent
DHCPv6 client
(1) DHCPv6 message from client
(4) DHCPv6 message to client
As shown in Figure
1) The DHCPv6 client sends a request to the multicast address FF02::1:2 of all the DHCPv6 servers
and relay agents.
2) After receiving the request, the DHCPv6 relay agent encapsulates the request into the Relay
Message Option of a Relay-forward message, and sends the message to the DHCPv6 server.
3) After obtaining the request from the Relay-forward message, the DHCPv6 server selects an IPv6
address and other required parameters and adds them into a reply which is encapsulated into the
Relay Message Option of a Relay-reply message. The DHCPv6 server then sends the Relay-reply
message to the DHCPv6 relay agent.
4) The DHCPv6 relay agent obtains the reply from the Relay-reply message and sends the reply to
the DHCPv6 client.
The DHCPv6 client uses the IPv6 address and other network parameters assigned by the DHCPv6
server to perform network configuration.

Protocols and Standards

RFC 3736: Stateless Dynamic Host Configuration Protocol (DHCP) Service for IPv6
RFC 3315: Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
RFC 2462: IPv6 Stateless Address Autoconfiguration

Configuring the DHCPv6 Client

Configuration Prerequisites

To make the DHCPv6 client obtain network configuration parameters through stateless DHCPv6
configuration successfully, make sure that the DHCPv6 server is usable.

Configuration Procedure

Follow these steps to configure the DHCPv6 client:
Enter system view
Enable the IPv6 packet forwarding function
Enter interface view
DHCPv6 relay agent
1-4, the DHCPv6 relay agent works as follows:
To do...
DHCPv6 server
(2) Relay-forward
(3) Relay-reply
Use the command...
system-view
ipv6
interface interface-type
interface-number
1-4
Remarks
—
Required
—