Configuring a QinQ Tunnel

After the QinQ tunnel is configured, the interface adds an outer VLAN tag to packets that carry an inner VLAN tag. These packets can then be forwarded on the public network.

Context

Perform the following steps on the device on which the QinQ tunnel is to be configured:

Procedure

Run system-view
The system view is displayed.
Run vlan vlan-id
A VLAN is created, and the VLAN view is displayed.

The VLAN ID refers to the value of the outer tag specified in the QinQ tunnel. The VLAN ID ranges from 1 to 4094.
Run quit
Return to the system view.
Run interface interface-type interface-number
The user-side Ethernet interface view is displayed.
(Optional) Run portswitch
The interface is configured as a Layer 2 interface.

Skip this step if the interface is already a Layer 2 interface.
Run port link-type dot1q-tunnel
The interface is configured as a QinQ interface.
Run port default vlan vlan-id
An outer VLAN tag is configured for packets passing through the QinQ Layer 2 interface.

vlan-id must be the same as the VLAN ID created in Step 2.
(Optional) Run qinq protocol ethertype-value
The protocol type of the outer tag is configured.

The value of ethertype-value ranges from 0x0600 to 0xFFFF.

The qinq protocol command takes effect both on double-tagged and single-tagged packets.
Run commit
The configuration is committed.