Configuring a DHCPv6 relay address pool
This feature allows DHCPv6 clients of the same type to obtain IPv6 addresses and other configuration parameters from the DHCPv6 servers specified in the matching relay address pool.
It applies to scenarios where the DHCPv6 relay agent connects to clients of the same access type but classified into different types by their locations. In this case, the relay interface typically has no IPv6 address configured. You can use the gateway-list command to specify the gateway address for clients matching the same relay address pool.
Upon receiving a DHCPv6 Solicit or Request from a client that matches a relay address pool, the relay agent processes the packet as follows:
Fills the link-address field of the packet with the specified gateway address.
Forwards the packet to all DHCPv6 servers in the matching relay address pool.
The DHCPv6 servers select an address pool according to the gateway address.
To configure a DHCPv6 relay address pool:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Create a DHCPv6 relay address pool and enter its view. | ipv6 dhcp pool pool-name | By default, no DHCPv6 relay address pools exist. This command is the same for creating DHCPv6 address pools on a DHCPv6 server. However, the relay address pool name is not necessarily the same as the server address pool name. |
3. Specify gateway addresses for the clients matching the relay address pool. | gateway-list ipv6-address&<1-8> | By default, no gateway address is specified. You can specify a maximum of eight gateway addresses, but only the first one takes effect. |
4. Specify DHCPv6 servers for the relay address pool. | remote-server ipv6-address [ interface interface-type interface-number ] | By default, no DHCPv6 server is specified for the relay address pool. You can specify a maximum of eight DHCPv6 servers for one relay address pool for high availability. The relay agent forwards DHCPv6 Solicit and Request packets to all DHCPv6 servers in the relay address pool. |