ASR TEMPERATURE SENSOR FAIL

[oscarayala88]

Hi Team,

When I ingress the command "admin show environment temperatures location 0/FT1". I have the following result:

================================================================================
Location TEMPERATURE Value              Crit Major Minor Minor Major Crit
                    Sensor       (deg C)            (Lo) (Lo)     (Lo)   (Hi)    (Hi)   (Hi)
--------------------------------------------------------------------------------
0/FT1
                     Inlet              32                -10 -5          0    105    115  120
                 ! Hotspot           0                 -10 -5          0     105    115 120
RP/0/RSP0/CPU0

I can see in the result something different compared to other devices in the following line: "! Hotspot " with the symbol "!".

Does anyone know if there is a problem with any of the Fan Trail sensors?

Thank you.

[Ruben Cocheno]

@oscarayala88 

Check with TAC if you hitting bug CSCvg01366 witch reports Hotspot temperature alarm with value 0

It is actually covered it really well in this thread

https://supportforums.cisco.com/thread/2132426

To paraphrase

The inlet temperature is closer to the fans and hence will show a cooler temperature. The hotspot is just that, the hottest point on the card. It is better to monitor the hotspot.

For your cards you are above the nominal and short-term operating values. This can be due to many reasons. Some devices are front-to-back cooling while others are side-to-side. Actual cooling of the environment along with the temperature of the air that is brought into the ASR9K. Fiber, copper, power cables etc that may be in the way can also affect cooling.

Not addressing the cooling concerns will not only show environmental messages in your console but can also cause damage to your cards.

[oscarayala88]

Hi @Ruben Cocheno  thanks for your support.

Please I am trying to find information about this bug but there isn't too much information. Can you send again this link https://supportforums.cisco.com/thread/2132426 because that page has an error and I can´t open.

[Ruben Cocheno]

@oscarayala88 

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