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. When data packets sent by CEs to PEs carry double VLAN tags, the sub-interface terminates double VLAN tags. This sub-interface is called QinQ termination sub-interface.
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 as an outer VLAN for the sub-interface for QinQ VLAN tag termination.
- Run:
arp broadcast enable
The sub-interface is enabled to forward ARP broadcast packets.
- On the PE device, run:
- 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 as an outer VLAN for the sub-interface for QinQ VLAN tag termination.
- Run:
ipv6 nd ns multicast-enable
The sub-interface is enabled to sending NS multicast packets.
- On the PE device, run: