From: Mike Kraus \(mikraus\) (mikraus@cisco.com)
Date: Tue Jul 03 2007 - 09:40:34 ART
"Surely this can't be a solution in real world networks ?"
Unfortunately, this is the way it works, even in the real world! Many
enterprise customers do what they can to avoid relying on spanning-tree
due to this type of behavior. At one large beverage company in my area,
if you mention the word spanning-tree you pretty much get stoned and
beaten. That's why the advent of flex-links, Nortel's SMLT, and other
similar technologies.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
brajesh.thakur@wipro.com
Sent: Tuesday, July 03, 2007 7:27 AM
To: thomas.rader@freesurf.ch; ccielab@groupstudy.com
Subject: RE: STP priority question
Dear Thomas,
In STP the moment you set lower priority for a switch, it becomes the
root for that stp instance, so it preempts the current root, it doesn't
wait for the current root to fail. It sends the bpdu with lower bridge
id and becomes the root. I have configured it many times to stabilize
the customer networks. Hope it clarifies your doubts.
Regards,
Brajesh Thakur
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
thomas.rader@freesurf.ch
Sent: Tuesday, July 03, 2007 5:48 PM
To: ccielab@groupstudy.com
Subject: Re: STP priority question
Thanks, that's what I sought!
So how do I control who becomes the STP root bridge for a STP domain ?
Make sure that switch is ALWAYS the first to come up ?
Surely this can't be a solution in real world networks ?
Thomas
-----------------------------------------------------------------
Von: shiran guez [mailto:shiranp3@gmail.com]
Gesendet: Dienstag, 3. Juli 2007 13:53
An: thomas.rader@freesurf.ch
Betreff: Re: STP priority question
when there is already a server there will not be re-election until this
server goes down!
hope this was your qwestion :-)
On 7/3/07, thomas.rader@freesurf.ch <thomas.rader@freesurf.ch> wrote:
When you change the STP priority on a switch to be the lowest (most
prefered) switch does that switch automatically become the root switch
for all switches in that STP domain ? ie something like HSRP preempt ?
Or does this only count for new switches booting up ?
Thanks, Thomas
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