How do I find out how many fans are there in a router with the help of CLI? Specifically cisco3845 with ios c3845-spservicesk9-mz.124-3b.bin

[Arun More]

       I have an issue where show env o/p is as below, I suspect the FAN 1 which shows failed is not present in router, how do i find out with the help of CLI , how many fans are present in router.

#show environment all

SYS PS1 is present.

       Fan status: Normal

       Input Voltage status: Normal

       DC Output Voltage status: Normal

       Type: AC

       Thermal status: Normal

SYS PS2 is present.

       Fan status: Normal

       Input Voltage status: Normal

       DC Output Voltage status: Normal

       Type: AC

       Thermal status: Normal

AUX(-48V) PS1 is absent.

AUX(-48V) PS2 is absent.

Fan 1 Failed

Fan 2 Normal

Fan 3 Normal

Fan Speed is Normal

Alert settings:

Intake temperature warning: Enabled, Threshold: 55 Core temperature warning: Enabled, Threshold: 70 (CPU: 90)

Board Temperature: Normal

Internal-ambient temperature = 28, Normal CPU temperature = 41, Normal Intake temperature = 22, Normal Backplane temperature = 19, Normal

Voltage 1(3300) is Normal, Current voltage = 3284 mV Voltage 2(5150) is Normal, Current voltage = 5153 mV Voltage 3(2500) is Normal, Current voltage = 2525 mV Voltage 4(1200) is Normal, Current voltage = 1203 mV

Nominal frequency

[cadet alain]

Hi,

Why would it report it as failed if it wasn't present ?

Regards

Alain

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[Arun More]

Hi Alain,

I have seen in some devices when fan is not present it gives o/p as failed? and when i physically checked it was not there.

If at we consider its there inside, how do we can find out its presence, does failed means its presence there?

Regards,

Arun

[cadet alain]

Hi,

ok didn't know about this fact.

I don't see how you can do apart opening the device and verifying.

Regards

Alain

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[Arun More]

Hi,

To make it more specific in SDM was getting alert as FAN 3 failed, where as FAN 3 was not there in the device and that was switch, and I do not recollect the command o/p where it showed me absent or something like that. So what my q is is there a CLI command which shows the number of FANS present in chasis. Simple rite?

[cadet alain]

Hi,

yes simple indeed but aprt from the command you used I'm not aware of any other, maybe some more knowledgeable people will tell you if there is such a command then.

Regards

Alain

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[Arun More]

Hi,

My second point is does failed confirms the presence of the FAN ?

[cadet alain]

Hi,

I would have thought so but you tell that it may not be the case.

Regards

Alain

Don't forget to rate helpful posts.

[Arun More]

Hi,

I would have provided you the proof of the it, but unfortunately the snapshot captured machine got crashed and I could not recover the data. But I am very much sure that I have seen it CLI mode where it showed me FAN is not present still i got the error log of failed FAN.

[JohnTylerPearce]

Arun,

Do you show any errors for the fan under 'show logging' ?

Also, "fan failed' should indicate the failure of a fan. But usually you should see errors under 'show logging'

[Arun More]

yes it does as follows

Feb 14 07:31:01.996 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.
Feb 14 07:31:21.996 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.
Feb 14 07:31:41.995 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.
Feb 14 07:32:01.994 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.

Again My second point is whether failed means fan is present or absent ?

[JohnTylerPearce · Accepted solution]

This means that FAN1 has failed.

Fan 1 Failed

Feb 14 07:31:01.996 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.

Feb 14 07:31:21.996 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.

Feb 14 07:31:41.995 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.

Feb 14 07:32:01.994 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported. Feb 14 07:31:01.996 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.
Feb 14 07:31:21.996 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.
Feb 14 07:31:41.995 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.
Feb 14 07:32:01.994 GMT: %FAN-3-FAN_FAILED: Fan 1 had a rotation error reported.

[Arun More]

Thanks John,

[natarajan.india]

Hi All,

In cisco 3845 router, we are using, in that totally 3 fan, but fan 1 is failed. how to find the serial no of the fan...By using the cli...

thank and Regards 

Natarajan