From: Reza Toghraee (reza@toghraee.com)
Date: Wed Oct 22 2008 - 17:06:03 ARST
Mihai,
I did this long time ago.
It will work if :
1) disable DTP, trunks must be ON, and on no negotiate
2) disable spanning-tree
I don't remember exactly about spanning tree, but I think you must remove
the instance for both native vlans on both switches.
Reza
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
mihai.grigore@onlinehome.de
Sent: Wednesday, October 22, 2008 10:47 PM
To: ccielab@groupstudy.com
Subject: Re: Re: Vlan dot1q tag Native
Guys,
GREAT EXPLANATION !! Worth much more than the one in DOCCD... I read that
one
several times but did not get it... Now, I feel better about the native
vlan.
I have a question though: is it possible to configure different native VLANs
on
the ends of a trunk between Cisco switches ?
As far as I could see in the lab, as soon as I configure one end, the trunk
is
brought down and an error message pops up, something like: "native VLAN
mismatch... bringing down the trunk".
After I configure the SAME native vlan on the other end of the trunk, this
comes up. As far as I know, this is transmitted via CDP.
I guess scenario 3 does not work with Cisco switches. Maybe between Cisco
and
non-Cisco or between non-Ciscos...
TIA, Mihai
Blogs and organic groups at http://www.ccie.net
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