02-15-2010 06:26 AM - edited 03-06-2019 09:42 AM
Hi,
We are implementing this topology in our customer network.
Core routers are 7609-S connected via 10G links to each other and 1G links to the customer platform which contains 3650 cisco switches and Sun
servers.
.
The problem is that core switches in each site run MSTP, however 3560 switches run PVST. The solution works fine since both protocol are compatible but we have facing some problem especially when troublshooting or when adding new vlans (loops,...).We couldn't find any valuable document describing the installation and troubleshooting a network with PVST and MSTP.
So what we need to know if there's some technical references about this subject and what kind of commun problems we risk to face with this type of topology.
Thank you
Zied
02-15-2010 08:45 AM
Hello Zied,
There were a couple of documents I have found useful when deploying the MSTP and optionally interacting with PVST.
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfc.shtml
This document is a very fine while not-so-deep explanation about the MSTP and some of the caveats of deploying it.
http://blog.internetworkexpert.com/2008/07/27/mstp-tutorial-part-i-inside-a-region/
http://blog.internetworkexpert.com/2008/09/24/mstp-tutorial-part-ii-outside-a-region/
These two articles by Petr Lapukhov are a wonderful explanation of how indeed does the MSTP work. I have to admit I have never seen a more detailed explanation of what is going on inside MSTP than this guy's articles.
Perhaps you will find some of these documents helpful.
As far as I am concerned, I have never deployed the MSTP in large networks but I am aware of these limitations:
Best regards,
Peter
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