Configuring a QinQ Sub-interface
Context
When a VPN network connects to an ISP network through a sub-interface, the sub-interface needs to terminate VLAN tags. A QinQ termination sub-interface can remove double VLAN tags carried by packets sent from CEs to PEs.
Procedure
- Configure an IPv4 address for a sub-interface.
- On the PE device, run system-view
The system view is displayed.
- Run interface interface-type interface-number
The interface view is displayed.
- Run port link-type { hybrid | trunk }
The port link-type is set.
- Run quit
Return to the system view.
- Run interface interface-type interface-number.subinterface-number
The view of the sub-interface connecting the PE to the CE is displayed.
- Run ip address ip-address { mask | mask-length }
An IPV4 address is configured for the sub-interface.
- Run qinq termination pe-vid pe-vid ce-vid ce-vid1 [ to ce-vid2 ]
QinQ termination is configured on the sub-interface.
After a VLANIF interface is configured, the corresponding VLAN cannot be configured in a sub-interface view.
- Run arp broadcast enable
The sub-interface is enabled to forward ARP broadcast packets.
- On the PE device, run system-view
- Configure an IPv6 address for a sub-interface.
- On the PE device, run:
system-view
The system view is displayed.
- Run ipv6
IPv6 packet forwarding is enabled.
- Run interface interface-type interface-number
The interface view is displayed.
- Run port link-type { hybrid | trunk }
The port link-type is set.
- Run quit
Return to the system view.
- Run interface interface-type interface-number.subinterface-number
The view of the sub-interface connecting the PE to the CE is displayed.
- Run ipv6 enable
The IPv6 function is enabled on the interface.
- Run ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }
An IPV6 address is configured for the sub-interface.
- Run qinq termination pe-vid pe-vid ce-vid ce-vid1 [ to ce-vid2 ]
QinQ termination is configured on the sub-interface.
After a VLANIF interface is configured, the corresponding VLAN cannot be configured in a sub-interface view.
- Run ipv6 nd ns multicast-enable
The sub-interface is enabled to send NS multicast packets.
- On the PE device, run: