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
Product |
Product Model |
Software Version |
|---|---|---|
S12700 |
S12708, S12712 |
V200R005C00, V200R006C00, V200R007C00, V200R007C20, V200R008C00, V200R009C00, V200R010C00, V200R011C10 |
S12710 |
V200R010C00, V200R011C10 |
|
S12704 |
V200R008C00, V200R009C00, V200R010C00, V200R011C10 |
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.
A VLAN bound to a BD cannot be specified as the value of stack-vlan (that is, the outer VLAN ID added to frames) in VLAN stacking commands. Similarly, a VLAN specified as the value of stack-vlan in VLAN stacking commands cannot be bound to a BD.
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.