summit temperature ranges

[Dave_Martin]

Surely these can't be right? both devices are version 16.1.4.2 patch 1-10

1 # sho temp
Field Replaceable Units Temp (C) Status Min Normal Max
---------------------------------------------------------------------------
Switch : X460G2-48t-10G4 90.28 Normal 0 10-100 110
2 #

1 # sho temp
Field Replaceable Units Temp (C) Status Min Normal Max
---------------------------------------------------------------------------
Switch : X480-48t(10G4X) 33.50 Normal -10 0-75 80
VIM2-10G4X-1 : 38.50 Normal -10 0-75 80
VIM2-10G4X-1 :
2 #

[Dave_Martin]

The 480 spec sheet says it can go to 40c, but the above says 80c (or 75), so is the 480 doing something similar as well? (note that this 480 is not a G2)

[Ron_Huygens]

I am not a hardware engineer but I assume that the 40C is the ambient temperature.
based on that it can reach on the maximum 75C on the CPU motherboard.

[Drew_C]

I'm not sure why the spec sheet is different than what's listed in the switch output. 40°C is quite low, so I would imagine that 80° is more accurate.

[Ron_Huygens]

Basically, For the G2's the temperature sensor is a virtual sensor whose temperature is calculated based on several factors like temperature value from other sensors and PoE output. Fan speed will be increased accordingly as per this calculation.Algorithm used for calculating temperature will vary for each hardware variant to ensure that the system (including board devices and Power Supply) does not overheat.

So most of the time it will be the CPU temperature but also PoE drivers can become a important heat source.