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QinQ Tunneling


Can we configure QinQ Tunneling (to spread same vlan) between two core switches that are connected via trunk/PortChannel or connected via routing protocol e.g. OSPF or EIGRP ?



QinQ Tunneling

It depends on the use case. You can use Q-in-Q to carry same VLAN from customers but in your case it seems you want to use it in some other way.

Please provide a topology and describe more what you want to do.

Daniel Dib
CCIE #37149

Daniel Dib CCIE #37149 Please rate helpful posts.
New Member

QinQ Tunneling

Attached is the diagram.

Assume we have V10 in Campus 1 & we have to carry same Vlan ID in Campus 2.

Super Bronze

Re: QinQ Tunneling


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Is this also in regard to your other posting about VSS and extending VLANs?

If so, unsure why you think you need QinQ, which allows carrying VLANs across VLANs.

If my last comment to your other posting wasn't clear, create a L2 port-channel between your two VSS core devices, then trunk across it.  This will allow you to easily extend VLANs between the two buildings, just as you would extend VLANs to other switches.  You can still do L3 on-top of the L2 VLANs, including across the trunk between the two VSS core devices.  Remember, logically VSS functions as one L3 switch and port-channels function as one logical link, so VLAN extension would be logically the same as extending VLANs between any two switches across one trunk link.

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