[c-nsp] Catalyst 2950 freezing

[Nikolay Shopik]

There no software solution(upgrade) for this bug. That 2950T is 
installed in test rack so never really attempted to fix issue, except 
software upgrade.
We believe replacing power supply should fix issue. As we have another 
2950C on same rack and works just fine.

On 19/12/11 15:06, Henry-Nicolas Tourneur wrote:
> Hello,
>
> And how have you been able to solve this issue/bug?
> I guess you did an IOS upgrade? To which version?
>
> Thanks for your help :)
>
> -----Original Message-----
> From: Nikolay Shopik [mailto:shopik at inblock.ru]
> Sent: lundi 19 décembre 2011 11:59
> To: Henry-Nicolas Tourneur; cisco-nsp
> Subject: Re: [c-nsp] Catalyst 2950 freezing
>
> Hey,
>
> We had something similar with 2950, which is really bug CSCeb04463. So
> basically switch working perfectly fine but at some moment (random) it
> will decide to hang.
>
> I cannot say if this is your case, but maybe worth check.
>
> On 19/12/11 14:40, Henry-Nicolas Tourneur wrote:
>> Hi all,
>>
>>
>>
>> For one of our customer, we'v a Cisco Catalyst 2950 located in their
>> premises, through this switch we deliver an internet access as well as a
>> voice service.
>>
>> The switch has a really basic cfg: 3 ports connected, 1 trunk and 1 port
> per
>> service.
>>
>>
>>
>>   From time to time, the switch freezes completely (all services down,
> switch
>> unreachable).
>>
>> Obviously, we already swapped the switch several times, check the logs,
>> errors counters . and nothing solved our issue.
>>
>>
>>
>> Even more weird, this morning we saw a traffic spike at 50mbps (services
> are
>> 4mbps and 1mbps) on every ports while they are inside separated VLAN (so
>> even an L2 loop shouldn't do this).
>>
>>
>>
>> We suspect a physical issue in the customer environment but we got no
>> evidence of this.
>>
>>
>>
>> So, I would like to get opinions on how to troubleshoot this.
>>
>> I don't know if there is any chassis debugging on a Catalyst switch (power
>> issues) or any experience someone could share?
>>
>>
>>
>> Thanks for your help J
>>
>>
>>
>> Henry-Nicolas Tourneur.
>>
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>