[c-nsp] Catalyst 4507R Single Point of Failure

[Felix Nkansah]

Never seen this problem before. It's fun to learn that the auto-shutdown
feature is IOS feature-based.

Thanks for sharing.



On Fri, Nov 20, 2009 at 11:52 AM, Antonio Soares <amsoares at netcabo.pt>wrote:

> Group,
>
> I'm now testing the faulty fan tray. I confirm that only one Fan is
> stopped. What happens with a different IOS/SUP is a surprise:
>
> 00:12:27: %C4K_IOSMODPORTMAN-4-FANTRAYPARTIALFAILURE: A fan or thermistor/s
> in system fan tray have failed
> 00:13:57: %C4K_IOSMODPORTMAN-4-FANTRAYGOOD: Fan tray is okay
> 00:24:52: %C4K_IOSMODPORTMAN-4-FANTRAYPARTIALFAILURE: A fan or thermistor/s
> in system fan tray have failed
> 00:31:27: %C4K_IOSMODPORTMAN-4-FANTRAYGOOD: Fan tray is okay
>
> IOS=cat4500-ipbase-mz.122-31.SGA8.bin
>
> So on this IOS, the auto-shutdown "feature" is not available.
>
> I will now downgrade to "cat4000-i9s-mz.122-18.EW7.bin" to see if i'm able
> to replicate the problem.
>
>
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S)
> amsoares at netcabo.pt
>
> -----Original Message-----
> From: Antonio Soares [mailto:amsoares at netcabo.pt]
>  Sent: sexta-feira, 20 de Novembro de 2009 10:19
> To: 'cisco-nsp at puck.nether.net'
> Subject: RE: Catalyst 4507R Single Point of Failure
>
> The Fan Tray (4597) was replaced and now everthing is fine.
> I will try to test the Faulty Fan Tray during the day and i will let you
> know what i found.
>
> Still looking for an answer to this question:
>
> - Is there any way to disable the system auto-shutdown ?
>
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S)
> amsoares at netcabo.pt
>
> -----Original Message-----
> From: Antonio Soares [mailto:amsoares at netcabo.pt]
> Sent: quinta-feira, 19 de Novembro de 2009 16:30
> To: 'cisco-nsp at puck.nether.net'
> Subject: RE: Catalyst 4507R Single Point of Failure
>
> More details about the system:
>
> IOS cat4000-i9s-mz.122-18.EW7.bin
>
> Dual Sup-IV (4515).
>
> We are going to replace the Fan Tray in about 2 hours. Then we will verify
> in the lab with more detail how many fans are failing.
>
> I'll keep you updated.
>
> But no matter how many Fans are faulty, i was expecting that, even if the
> entire Fan Tray fails, there was a way to override the
> system auto-shutdown.
>
>
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S)
> amsoares at netcabo.pt
>
> -----Original Message-----
> From: Antonio Soares [mailto:amsoares at netcabo.pt]
> Sent: quinta-feira, 19 de Novembro de 2009 13:49
> To: 'cisco-nsp at puck.nether.net'
> Subject: Catalyst 4507R Single Point of Failure
>
> Group,
>
> This is happening to a Catalyst 4507R:
>
> %C4K_IOSMODPORTMAN-4-FANTRAYBAD: Fan tray has failed
> %C4K_CHASSIS-2-INSUFFICIENTFANSDETECTED: Too few working fans in fan tray,
> the chassis will overheat. If not resolved, in 4 minutes
> all line cards will be placed into Reset-Mode
> %C4K_CHASSIS-2-INSUFFICIENTFANSSHUTDOWN: Resetting linecards due to fan
> tray failure
> %C4K_IOSMODPORTMAN-6-MODULEOFFLINE: Module 3 is offline
> %C4K_IOSMODPORTMAN-6-MODULEOFFLINE: Module 4 is offline
> %C4K_IOSMODPORTMAN-6-MODULEOFFLINE: Module 6 is offline
> %C4K_IOSMODPORTMAN-6-MODULEOFFLINE: Module 7 is offline
> %C4K_IOSMODPORTMAN-6-FANTRAYGOOD: Fan tray is okay
>
> I verified that only 1 out of 6 of the fans composing the Fan Tray is
> stopped.
>
> Any way to stop this automatic shutdown ?
>
> It's hard to understand why a Catalyst with Dual Supervisors and Dual Power
> Supplies will stop because of this.
>
>
>
>
> Thanks.
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S)
> amsoares at netcabo.pt
>
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