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# Specify an IPv6 address for GigabitEthernet 1/0/2.
[RouterA] interface gigabitethernet 1/0/2
[RouterA-GigabitEthernet1/0/2] ipv6 address 1::2:0:0:1/96
# Disable RA message suppression on GigabitEthernet 1/0/2.
[RouterA-GigabitEthernet1/0/2] undo ipv6 nd ra halt
# Set the M flag to 1 in RA advertisements to be sent on GigabitEthernet 1/0/2. Hosts that
receive the advertisements will obtain IPv6 addresses through DHCPv6.
[RouterA-GigabitEthernet1/0/2] ipv6 nd autoconfig managed-address-flag
# Set the O flag to 1 in RA advertisements to be sent on GigabitEthernet 1/0/2. Hosts that
receive the advertisements will obtain information other than IPv6 address through DHCPv6.
[RouterA-GigabitEthernet1/0/2] ipv6 nd autoconfig other-flag
[RouterA-GigabitEthernet1/0/2] quit
2.
Enable DHCPv6:
# Enable the DHCPv6 server on the interfaces GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2.
[RouterA] interface gigabitethernet 1/0/1
[RouterA-GigabitEthernet1/0/1] ipv6 dhcp select server
[RouterA-GigabitEthernet1/0/1] quit
[RouterA] interface gigabitethernet 1/0/2
[RouterA-GigabitEthernet1/0/2] ipv6 dhcp select server
[RouterA-GigabitEthernet1/0/2] quit
# Exclude the DNS server addresses from dynamic assignment.
[RouterA] ipv6 dhcp server forbidden-address 1::1:0:0:2
[RouterA] ipv6 dhcp server forbidden-address 1::2:0:0:2
# Create DHCPv6 address pool 1 to assign IPv6 addresses and other configuration parameters
to clients on subnet 1::1:0:0:0/96.
[RouterA] ipv6 dhcp pool 1
[RouterA-dhcp6-pool-1] network 1::1:0:0:0/96 preferred-lifetime 172800
valid-lifetime 345600
[RouterA-dhcp6-pool-1] domain-name aabbcc.com
[RouterA-dhcp6-pool-1] dns-server 1::1:0:0:2
[RouterA-dhcp6-pool-1] quit
# Create DHCPv6 address pool 2 to assign IPv6 addresses and other configuration parameters
to clients on subnet 1::2:0:0:0/96.
[RouterA] ipv6 dhcp pool 2
[RouterA-dhcp6-pool-2] network 1::2:0:0:0/96 preferred-lifetime 432000
valid-lifetime 864000
[RouterA-dhcp6-pool-2] domain-name aabbcc.com
[RouterA-dhcp6-pool-2] dns-server 1::2:0:0:2
[RouterA-dhcp6-pool-2] quit
Verifying the configuration
# Verify that clients on subnets 1::1:0:0:0/96 and 1::2:0:0:0/96 can obtain IPv6 addresses and all
other configuration parameters from the DHCPv6 server (Router A). (Details not shown.)
# On the DHCPv6 server, display IPv6 addresses assigned to the clients.
[RouterA] display ipv6 dhcp server ip-in-use
194
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Troubleshooting
