MavEtJu's Distorted View of the World - VLAN

Todays router adventure: tagged vlans

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Todays router adventure: tagged vlans

Posted on 2006-03-25 19:07:17, modified on 2006-03-25 19:46:11
Tags: Networking, VLAN

Todays router adventure consisted of getting VLANs working with the X450s between the SJH building and 400 Harris street (where I'm not welcome anymore if I don't wear closed-toe shoes).

The idea is very simple: Take an ethernet link, define one or more VLANs on top of it, give certain VLANs a better priority than the others.

Buuuuuut.... No matter what we did, it didn't work.

After three hours reading up on documentation ("it can't be that difficult, can it?"), I called Uecomm and asked them the question "Is this possible at all?". Some seconds later the guy on the other side said: "No".

That was the short answer. The long answer is that it is supported if the CPE supports 801.1qinq, a protocol to support tagged VLANs in tagged VLANs.

So much for a great plan to make the whole network a little bit more workable.

Additional note: Also PIPE networks doesn't support this by default. Scary. This is not what I had in mind when we bought an ethernet service.

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