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S12700 V200R010C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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Licensing Requirements and Limitations for QinQ

Licensing Requirements and Limitations for QinQ

Involved Network Elements

Other network elements are not required.

Licensing Requirements

QinQ is a basic feature of a switch and is not under license control.

Version Requirements

Table 10-7  Products and versions supporting QinQ


Product Model

Software Version


S12708, S12712

V200R005C00, V200R006C00, V200R007C00, V200R007C20, V200R008C00, V200R009C00, V200R010C00, V200R011C10


V200R010C00, V200R011C10


V200R008C00, V200R009C00, V200R010C00, V200R011C10

To know details about software mappings, see Hardware Query Tool.

Feature Limitations

  • For the points of attention when configuring QinQ on a sub-interface, see Licensing Requirements and Limitations for VLAN Termination.
  • The switch can add double tags to untagged packets.
  • The switch forwards packets based only on their outer VLAN tags and learns MAC address entries based on the outer VLAN tags.
  • Selective QinQ is recommended to be enabled on a hybrid interface. Selective QinQ can only take effect on the interface in the inbound direction.
  • When an interface configured with VLAN stacking needs to remove the outer tag from outgoing frames, the interface must join the VLAN specified by stack-vlan in untagged mode. If the outer VLAN does not need to be removed, the interface must join the VLAN specified by stack-vlan in tagged mode.
  • The device configured with selective QinQ can only add an outer VLAN tag to a frame with an inner VLAN tag on an interface, and the outer VLAN ID must exist. Otherwise, the services where selective QinQ is configured are unavailable.
  • If only single-tagged packets from a VLAN need to be transparently transmitted, do not specify the VLAN as the inner VLAN for selective QinQ.
  • When VLAN stacking is configured, do not configure stack-vlan to the VLAN corresponding to the VLANIF interface.

  • VLAN-based flow mirroring allows the device to identify only outer VLAN tags of QinQ packets.
  • The globally configured traffic-limit command that takes effect for all interfaces in the inbound direction is invalid for QinQ packets.
  • If the PW-side interface is a Layer 3 interface switched by the undo portswitch command, the AC-side interface cannot be a Layer 3 interface or subinterface belonging to a Layer 3 interface; otherwise, traffic forwarding is abnormal.

Updated: 2019-08-21

Document ID: EDOC1000142081

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