Configuring QinQ Mapping

QinQ mapping allows a device to map a user virtual local area network (VLAN) ID to a carrier VLAN ID, shielding different user VLAN IDs in packets.

Usage Scenario

QinQ mapping is deployed on Layer 2 edge devices to map user VLAN IDs in packets from users. The devices map the VLAN IDs in user packets to specified VLAN IDs before forwarding the packets to the public network. QinQ mapping is applicable (but not limited) to the following scenarios:
  • VLAN IDs deployed in new sites and old sites conflict, but the new sites need to communicate with the old sites.
  • VLAN ID planning at each site on the public network is different. As a result, the VLAN IDs conflict. These sites, however, do not need to communicate with each other.
  • VLAN IDs on both ends of the public network are different.
The NetEngine 8000 F supports the following QinQ mapping mode:

  • 1 to 1 QinQ mapping

    When a QinQ mapping-enabled sub-interface receives a single-tagged packet, the sub-interface replaces the VLAN ID in the packet with a specified VLAN ID.

After receiving a user-destined Layer 2 multicast packet, a QinQ stacking or QinQ mapping sub-interface that connects to a VPLS network removes the outer tag from the packet, adds the learned inner and outer tags to the packet, and then forwards the packet to a downstream device.

Pre-configuration Tasks

Before configuring QinQ mapping, plan user VLANs so that user packets carry one or two VLAN tags.

Parent Topic: QinQ Configuration
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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