R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide

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Figure 73 Operating process of a DHCPv6 relay agent
Configuration prerequisites
Before you configure the DHCPv6 relay agent, enable IPv6 by using the ipv6 command in system view.
Configuration guidelines
• You can specify up to eight DHCPv6 servers for an interface. After receiving requests from DHCPv6
clients, the DHCPv6 relay agent forwards the requests to all the specified DHCPv6 servers.
• If the DHCPv6 server address is a link-local address or link-scoped multicast address on the local
link, you must specify an outgoing interface using the interface keyword in the ipv6 dhcp relay
server-address command. Otherwise, DHCPv6 packets might fail to be forwarded to the DHCPv6
server.
• After you remove all the specified DHCPv6 servers from an interface with the undo ipv6 dhcp relay
server-address command, DHCPv6 relay agent is disabled on the interface.
• An interface cannot serve as a DHCPv6 relay agent and DHCPv6 server at the same time.
Configuration procedure
To configure the DHCPv6 relay agent:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable DHCPv6 relay agent
on the interface and specify a
DHCPv6 server.
ipv6 dhcp relay server-address
ipv6-address [ interface interface-type
interface-number ]
By default, DHCPv6 relay
agent is disabled and no
DHCPv6 server is specified on
the interface.
(1) Solicit (contains a Rapid Commit option)
(4) Reply
DHCPv6 client DHCPv6 relay agent DHCPv6 server
(2) Relay-forward
(3) Relay-reply