IPv6 address acquisition configuration example

As shown in Figure 101, configure GigabitEthernet 1/0/1 of the router to use DHCPv6 to obtain configuration parameters from the DHCPv6 server. The parameters include IPv6 address, 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 GigabitEthernet 1/0/1 to support DHCPv6 rapid address assignment. Enable the DHCPv6 client to create dynamic DHCPv6 option group 1 for saving configuration parameters.

<Router> system-view
[Router] interface gigabitethernet 1/0/1
[Router-GigabitEthernet1/0/1] ipv6 address dhcp-alloc rapid-commit option-group 1
[Router-GigabitEthernet1/0/1] quit

# Verify that the DHCPv6 client has obtained configuration parameters from the server.

[Router] display ipv6 dhcp client
GigabitEthernet1/0/1:
  Type: Stateful client requesting address
    State: OPEN
    Client DUID: 00030001d07e28db74fb
    Preferred server:
      Reachable via address: FE80::2E0:1FF:FE00:19
      Server DUID: 00030001000fe20a0a00
    IA_NA: IAID 0x00000a02, T1 50 sec, T2 80 sec
      Address: 1:2::2/128
       Preferred lifetime 100 sec, valid lifetime 200 sec
       Will expire on Mar 27 2014 at 15:35:55 (196 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 created a dynamic DHCPv6 option group for saving configuration parameters.

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

# Verify that the DHCPv6 client has obtained an IPv6 address.

[Router] display ipv6 interface brief
*down: administratively down
(s): spoofing
Interface                                Physical   Protocol   IPv6 Address
GigabitEthernet1/0/1                     up         up         1:1::2