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Beginner

QinQ and trunking at the same time - possible in any Cisco switch?

Hi,

 

I want to achieve a setup below 

 

A switch port will do qnq - for example vlan 1-4, these four vlans will be double tagged because qnq. Let's say inner vlan is 1, 2 3 or 4 and outer vlan is 100.

But vlan 5 is an exception. I do not want to apply qnq at all for this valn. This vlan will be allowed upstream without applying outer vlan tag. Only one tag which is vlan 5.

 

All this will be configured over one switch port.

 

Other vendor call this implementation qnq transparent vlan.

 

https://techhub.hpe.com/eginfolib/networking/docs/switches/5950/5200-2215a_l2-lan_cr/content/472584040.htm

 

Does Cisco have anything similar to this?

 

Regards

 

 

2 REPLIES 2
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Hall of Fame Master

Hello @ssajiby2k ,

have a look at the section configuring selective tunneling on a trunk port in the following link:

 

https://www.cisco.com/c/en/us/td/docs/switches/metro/me3400e/software/release/12-2_60_ez/configuration/guide/ME3400e_scg/swtunnel.html?dtid=osscdc000283#78335

 

It should be enough to omit = do no put the optional command

switchport vlan mapping default drop

 

Hope to help

Giuseppe

 

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@Giuseppe Larosa 

 

Do you know can one achieve the same thing without metro line of switches?

 

Anything with nxos?

 

Regards

 

 

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