IPv6 prefix acquisition configuration example

As shown in Figure 102, configure GigabitEthernet 1/0/1 of the router to use DHCPv6 to obtain configuration parameters from the DHCPv6 server. The parameters include IPv6 prefix, DNS server address, domain name suffix, SIP server address, and SIP server domain name.

You must configure the DHCPv6 server before configuring the DHCPv6 client. For information about configuring the DHCPv6 server, see "Configuring the DHCPv6 server."

# Configure an IPv6 address for GigabitEthernet 1/0/1 that connects to the DHCPv6 server.

<Router> system-view
[Router] interface gigabitethernet 1/0/1
[Router-GigabitEthernet1/0/1] ipv6 address 1::2/48

# Configure GigabitEthernet 1/0/1 to support DHCPv6 rapid prefix assignment. Enable the DHCPv6 client to assign an ID to the obtained IPv6 prefix and create a dynamic DHCPv6 option group for saving configuration parameters.

[Router-GigabitEthernet1/0/1] ipv6 dhcp client pd 1 rapid-commit option-group 1
[Router-GigabitEthernet1/0/1] quit

# Verify that the DHCPv6 client has obtained an IPv6 prefix and other configuration parameters from the DHCPv6 server.

[Router] display ipv6 dhcp client
GigabitEthernet1/0/1:
  Type: Stateful client requesting prefix
    State: OPEN
    Client DUID: 00030001d07e28db74fb
    Preferred server:
      Reachable via address: FE80::2E0:1FF:FE00:19
      Server DUID: 0003000100e001000000
    IA_PD: IAID 0x00000a02, T1 50 sec, T2 80 sec
      Prefix: 12:34::/48
        Preferred lifetime 100 sec, valid lifetime 200 sec
        Will expire on Feb 4 2014 at 15:37:20(80 seconds left)
    DNS server addresses: 
      2000::FF
    Domain name: 
      example.com
    SIP server addresses:
      2:2::4
    SIP server domain names:
      bbb.com

# Verify that the client has obtained an IPv6 prefix.

[Router] display ipv6 prefix 1
Number: 1
Type  : Dynamic
Prefix: 12:34::/48
Preferred lifetime 100 sec, valid lifetime 200 sec

# Verify that the client has created a dynamic DHCPv6 option group for saving configuration parameters.

[Router] display ipv6 dhcp option-group 1
DHCPv6 option group: 1
  DNS server addresses
    Type: Dynamic (DHCPv6 prefix allocation)
    Interface: GigabitEthernet1/0/1
    2000::FF
  Domain name:
    Type: Dynamic (DHCPv6 prefix allocation)
    Interface: GigabitEthernet1/0/1
    example.com
  SIP server addresses:
    Type: Dynamic (DHCPv6 prefix allocation)
    Interface: GigabitEthernet1/0/1
    2:2::4
  SIP server domain names:
    Type: Dynamic (DHCPv6 prefix allocation)
    Interface: GigabitEthernet1/0/1
    bbb.com