From: asim.mz@gmail.com
Date: Fri Jan 02 2009 - 21:00:38 ARST
Dear Joseph,
Thanks for your prompt reply,
Here is the info i got from client,
point 1:None of these ports are looped via cable back to each other
The customer environment is huge and cannot track this but in case it
happened how we can avoid it through some configurations as we cannot
watch the end users all time.
Point 2:Bpdufilter is NOT enabled (no spanning-tree bpdufilter enable)
Yes Bpdu filter is not enabled on all switches.
But what is your recommendation should not it be applied.
Point 3: -if a switch or hub is connected to these ports there is no
port on that
> device that is looped via cable back to another port either on this switch
> or the switching infrastructure (via another wall jack, etc.)
no all the ports are connected to IP Phones or desktop clients.
Asim
On 1/3/09, Joseph Brunner <joe@affirmedsystems.com> wrote:
> I suspect a bridge loop...
>
> Can you confirm the following
>
> -None of these ports are looped via cable back to each other
> -Bpdufilter is NOT enabled (no spanning-tree bpdufilter enable)
> -if a switch or hub is connected to these ports there is no port on that
> device that is looped via cable back to another port either on this switch
> or the switching infrastructure (via another wall jack, etc.)
>
> I fought a 6509 fire just like the one you are seeing and it was caused by
> my third thing to check
>
> -Joe
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Asim
> Zafar
> Sent: Friday, January 02, 2009 5:20 PM
> To: Cisco certification
> Subject: 6500 stp stages issue
>
> Dear Group,
>
>
>
> i am facing issue with some ports in 6500 causing the switch to reach
> to 100% cpu utilization and loss the functionality,
>
> These ports are access ports repeatedly go from disable state to
> forwarding state for many times and then become stable. but due the
> transition phase the CPU utilization increase.
>
>
> --
> Thanks & Regards,
>
> Asim Zafar
>
>
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-- Thanks & Regards,Asim Zafar
Blogs and organic groups at http://www.ccie.net
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