RE: MSTP Revision Number

From: Joseph Brunner (joe@affirmedsystems.com)
Date: Sat Aug 16 2008 - 23:14:37 ART

A better question is who the hell in 2008 is designing a network with large
spanning-tree's that require the MSTP functionality?

I generally create vlans only locally on a switch for intra-switch isolation
of traffic, then create EIGRP routed ports, either routed layer 3
interfaces, or layer 3 port channels...

-Joe

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
shiran guez
Sent: Saturday, August 16, 2008 1:43 AM
To: Hobbs
Cc: Anthony Sequeira; Cisco certification
Subject: Re: MSTP Revision Number

Hi Anthony

the cisco press explenation looks like boolshit, as I do not think any one
in there right mind will go trough there all network and will reset there
revision number if they did a change, personally this is somthing I am
setting only once just to make sure all match and that is it.

as I see it there is no other rational behind that, they all need to match
in your spanning tree domain.

On 8/16/08, Hobbs <deadheadblues@gmail.com> wrote:
>
> This is from the cisco press bcmsn book page 278:
>
> "The configuration revision number gives you a means of tracking changes
> to the MST region configuration. Each time you make changes to the
> configuration, you should increase the number by one. Remember that the
> region configuration (including the revision number) must match on all
> switches in the region. Therefore, you also need to update the revision
> numbers on the other switches to match."
>
> On Tue, Aug 12, 2008 at 4:29 PM, Anthony Sequeira <
> Anthony_Sequeira@skillsoft.com> wrote:
>
> > A student asked me today about the reasoning behind this third
> > configuration component that must match between MSTP devices. He was
> > curious about the rationale behind it, when it would seem that matching
> > domain names and VLAN/instance tables would be enough.
> >
> >
> >
> > Has anyone seen the rationale documented? My guess would be to
> > facilitate a reconfiguration of the topology...
> >
> >
> >
> > Anthony J Sequeira
> >
> > #15626
> >
> >
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-- 
Shiran Guez
MCSE CCNP NCE1 CCIE #20572
http://cciep3.blogspot.com
http://www.linkedin.com/in/cciep3

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