01-09-2025 06:15 AM
The Cisco Catalyst 9300 Data Sheet states the minimum ambient startup temperature is 32 F.
Is there a way to see a switch failure was caused by low temperature?
Thanks
Jim495
01-09-2025 02:46 PM
This is something that probably just a few people could witness but surelly they will be logs.
01-10-2025 06:57 AM
Anyone know if this sort of failure would be covered by an active Smartnet support contract?
01-10-2025 07:05 AM
If Cisco put in a document that dont recommend temperature below 40F, if you put the switch in temperature below that and the switch crash they will not corever.
01-10-2025 04:38 PM
IF the switch is dead, it is covered plain Enhanced Limited Lifetime Hardware Warranty which comes with every purchase (or included in the price).
01-10-2025 07:32 AM
If ambient temperature, at (initial) startup, is less than spec, whether a startup failure might be logged, I expect, would much depend how far into the startup the device manages to perform. I.e. a very early failure might not get far enough to log anything, or even display anything to the console.
Possibly, the device might somehow get far enough into its startup process, to internally note its aborting startup which might be logged "normally" in a later successful startup. (For the last, I have in mind a special diagnostics card I had, decades ago, that you could plug into a PC card slot which might display POST codes, and if PC didn't boot, that code might indicate what hardware was failing during initial power on. Keep in mind, if something fails during power on, depending on what's the problem, can very much limit the device from, somehow, indicating the nature of the issue.)
The forgoing should not be confused with a quick power cycle startup, where the device may still be warm from prior operation.
01-10-2025 04:36 PM
Yes and no.
The switch will shut/power down when the temperature exceeds the RED threshold. And the only way to recover is to remove the power and wait for the power supplies to stop providing residual power and then re-energizing the power supplies.
SNMP will also provide temperature readings up to the time when the switch stops responding.
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