Configuring IPv6 over Cisco HDLC Interfaces

You can configure IPv6 prefix addresses over a Cisco HDLC interface on a POS physical interface. IPv6 traffic is forwarded over HDLC circuits and the database of the forwarding controller is updated with IPv6 as an upper-layer interface to the HDLC interface.

Note: You can specify IPv6 prefixes only over Cisco HDLC interfaces on POS major interfaces. You cannot configure IPv6 addresses on E3 and T3 interfaces.

To configure an IPv6 prefix address over a Cisco HDLC interface on a POS interface:

From Configuration mode, enter a POS interface on which you want to configure an HDLC circuit.
host1(config)#interface pos 0/1
Select Cisco HDLC as the encapsulation method for the interface.
host1(config-if)#encapsulation hdlc
Assign a local IPv6 address to the circuit.
host1(config-subif)#ipv6 address 1::1/64

interface pos

Use to configure a POS interface in slot/port format:
- slot—Router chassis slot
- port—Line module port
Example
host1(config)#interface pos 0/1
Use the no version to remove the POS interface.
See interface pos.

ipv6 address

Use to add an IPv6 address to an interface or a subinterface.
Example
host1(config)#interface gigabitEthernet 1/0.25 host1(config-if)#ipv6 address 1::1/64
Use the no version to remove an IPv6 address.
See ipv6 address.