From: Voss, David (dvoss@heidrick.com)
Date: Wed Sep 25 2002 - 22:03:16 GMT-3
So the consensus for the following (I'm adapting it a bit):
Make sure that your switch "never" becomes root for vlan 20.
root guard on the port hosting VLAN20 if you have 2 or more switches sharing
VLAN20
and
disable spanning tree for VLAN20 if you have 1 switch
-----Original Message-----
From: Balaji Siva [mailto:bsivasub@cisco.com]
Sent: Wednesday, September 25, 2002 7:59 PM
To: Nick Shah; Voss, David; ccielab@groupstudy.com
Subject: RE: Consensus
This makes more sense..though the config is actually made on the
neighbouring switches !!!
It is probably used on distribution/core to prevent small access switches
from becoming root..
B
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Nick Shah
Sent: Wednesday, September 25, 2002 8:42 PM
To: Voss, David; ccielab@groupstudy.com
Subject: Re: Consensus
Set spantree guard is the ONLY sure shot way.
I am willing to bet my $$$ on this one.
To raise the odds on the bet :)
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_6_1/config/s
pantree.htm#xtocid2856623
rgds
Nick
----- Original Message -----
From: "Voss, David" <dvoss@heidrick.com>
To: <ccielab@groupstudy.com>
Sent: Thursday, September 26, 2002 9:51 AM
Subject: Consensus
> I've been going through the threads on spanning tree and one thread that
> never had a consensus was how to ensure a switch would "never" become
root.
> There is not a text I have found that addresses this. From what I can
tell,
> one option is to turn off spanning tree completely, the other to set
> priority to 65535. Neither sounds appropriate to me.
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