Configuring 2 to 1 VLAN Mapping

When receiving a tagged packet, an interface maps the VLAN ID in the packet to an S-VLAN ID.

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 qinq vlan-translation enable
VLAN translation is enabled on the interface.
Run port vlan-mapping vlan vlan-id1 inner-vlan vlan-id2 [ to vlan-id3 ] map-vlan vlan-id4 [ remark-8021p 8021p-value ]
The outer VLAN tag is replaced.