Q-in-Q

Unanswered Question
Nov 20th, 2008

I am interested in having a particular VLAN in two separate sites. I have read a little about it and was wondering if it would be possible to do across a point-to-point DS3 connection. I see a command on my serial link "Router2(config-if)#dot1q tunneling ethertype ?"

Will this command help me do what I want? I just want to be able to have a particular subnet in two different cities where it's not an option to split it.

I have this problem too.
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snickered Thu, 11/20/2008 - 07:51

Router1:

Model: 7206VXR

IOS: C7200P-ADVENTERPRISEK9-M 12.4(15)T5

Port Adapter: PA-2T3+=

Router2:

Model: 7204VXR

IOS: C7200-ADVENTERPRISEK9-M 12.4(15)T1

Port Adapter: PA-2T3+=

Will this do? From what I can see "2-port T3 port adapter" will work (if that's what PA-2T3 is). And it looks like the 7200 series has been supported as of 12.0(21)S.

You wouldn't happen to have a base config for the interfaces, would you?

snickered Thu, 11/20/2008 - 08:18

The way I understand this is that you can't do this across a L3 link. Am I correct on this?

Giuseppe Larosa Thu, 11/20/2008 - 08:36

Hello Jason,

you are correct 802.1Q tunneling is a MAN feature provided by a L2 Service Provider, in your case L2TPv3 is the right tool as explained by Jon.

Hope to help

Giuseppe

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