From: Scott Morris (smorris@internetworkexpert.com)
Date: Sun Jan 25 2009 - 17:15:54 ARST
Rephrase now that I've read your post. :)
In S-train (and higher-end devices) you have the "switchport trunk dot1q
ethertype value" command, but not in anything we're using or any
"enterprise" equipment as far as I know.
Scott
From: Pavel Bykov [mailto:slidersv@gmail.com]
Sent: Sunday, January 25, 2009 2:08 PM
To: Scott Morris
Cc: Wouter Prins; Cisco certification
Subject: Re: changing default ethertype for 802.1q interfaces?
Uh, Scott, I personally have configured it on GSRs.
So it really depends on a device. ES20 and 10K will definitely support
command as well.
On Sun, Jan 25, 2009 at 8:03 PM, Scott Morris
<smorris@internetworkexpert.com> wrote:
I can honestly say that I haven't ever tried changing any particular
protocols' ethertype value before. As I recall, there aren't commands that
have parameters where that can be specified (leading to the idea of
reprogrammiing the switch, or sing something different like
tunneling/vpls/xconnect/l2tv3/etc).
HTH,
Scott
From: Wouter Prins [mailto:wp@null0.nl]
Sent: Sunday, January 25, 2009 1:41 PM
To: smorris@internetworkexpert.com
Cc: Cisco certification
Subject: Re: changing default ethertype for 802.1q interfaces?
hi Scott,
I can change the ethertype on other vendors switches without writing new
code ;)
Anyways, I guess it's not possible as i've read quite some docs for this
already, but perhaps an SP guy knows the answer. Even if it's a no. :)
I have one tagged 802.1q 0x8100 link and i cannot do dual dot1q tags on this
link, because of some intermediate equipment....
So i would like to tag on a cisco with another ethertype to get through the
intermediate equipment.
Thanks and regards,
Wouter
2009/1/25 Scott Morris <smorris@internetworkexpert.com>
That would be a lot of reprogramming and re-spinning of ASICs, but I'm sure
there's some method!
Wouldn't some version of L2 Tunneling or VPLS be more viable?
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Wouter Prins
Sent: Sunday, January 25, 2009 6:52 AM
To: Cisco certification
Subject: changing default ethertype for 802.1q interfaces?
Hi,
I would like to configure the default ethertype of 802.1q interfaces to use
ethertype 0x9100 instead of 0x8100. I dont want to setup a dot1q tunnel but
i want to bypass an Extreme switch this way.
If anyone knows such a command i would be happy. :)
Thanks,
Wouter
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