q-in-q router 0x8100

Unanswered Question
Mar 31st, 2008

Hi

I would like use the ethertype 0x8100 for the s-vlan tag.

i am using an 3845 Router.

example:

interface gig0/1

..

interface gig0/1.1

ip address x.x.x.x x.x.x.x

encapsulation dot1Q 500 second-dot1q 100

because its not possible to enter at the main-interface the command:

"dot1q tunneling ethertype 0x8100"

only ethertype 0x88a8 and 0x9100 is allowed!

so i ommited this command!

does this config work?

and which ethertype uses the router?

thanks

I have this problem too.
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erlangm Thu, 04/10/2008 - 00:29

thats right!

but the XR-Software isn't working with 3845 Router!

erlangm Tue, 04/15/2008 - 01:26

Hi

with infistream i could intercept the frames, which the router is sending into the lan.

so i can see now, that the frames are really double-tagged with ethertype 0x8100.

thanks

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