[c-nsp] spanning-tree problems

[Church, Chuck]

Sounds like you've got some serious issues.  Either it's a really bad
design, or you're hitting limits or bugs.  Rapid-PVST should reconverge
damn quickly, but if you're exceeding the number of VLANs it supports
(platform-dependant), BAD things can happen.  Is the whole network Rapid
PVST? 


Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Netco Government Services - Design & Implementation Team
1210 N. Parker Rd.
Greenville, SC 29609
Home office: 864-335-9473
Cell: 864-266-3978
cchurch at netcogov.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D 


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
derick.winkworth at verizon.net
Sent: Friday, December 09, 2005 12:11 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] spanning-tree problems

>Unless there's something easy I'm overlooking, I think I'm going to
have to
>get a detailed topology map of the enterprise network from the company
that
>installed it before making any other changes.
>
>Thanks,
>Adam


Ummm..  well, why not modify the priority on the 3750 to a lower value
then everything else on your network, including the router module?

That seems to me to be the easiest way of preventing the router from
becoming root.


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