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Nexus 5k - Fans maxed out all the time

B_Morling
Level 1
Level 1

Hi,

I've just plugged in 4 Nexus5548 switches and ran through the initial setup without any issues. However, the fans seem to be stuck on full speed. At the moment they're the loudest thing in the server room.

I know this isn't the most recent OS however I was hoping to avoid updating if necessary as I don’t have the service agreement linked to my account and can’t download the update without it. Is there anything else I can try first or anything I have missed?


Software
  BIOS:      version 3.5.0
  loader:    version N/A
  kickstart: version 5.1(3)N1(1a)
  system:    version 5.1(3)N1(1a)
  power-seq: Module 1: version v1.0
  Module 3: version v2.0
  uC:        version v1.2.0.1
  SFP uC:    Module 1: v1.0.0.0
  BIOS compile time:       02/03/2011
  kickstart image file is: bootflash:///n5000-uk9-kickstart.5.1.3.N1.1a.bin
  kickstart compile time:  2/7/2012 23:00:00 [02/08/2012 07:49:30]
  system image file is:    bootflash:///n5000-uk9.5.1.3.N1.1a.bin
  system compile time:     2/7/2012 23:00:00 [02/08/2012 12:44:33]


Hardware
  cisco Nexus5548 Chassis ("O2 32X10GE/Modular Universal Platform Supervisor")
  Intel(R) Xeon(R) CPU         with 8263880 kB of memory.
  Processor Board ID FOC16193NH1

  Device name: Switch
  bootflash:    2007040 kB

Kernel uptime is 5 day(s), 3 hour(s), 1 minute(s), 56 second(s)

Last reset
  Reason: Unknown
  System version: 5.1(3)N1(1a)
  Service:

plugin
  Core Plugin, Ethernet Plugin, Fc Plugin

Fan:
------------------------------------------------------
Fan             Model                Hw         Status
------------------------------------------------------
Chassis-1       N5548P-FAN           --         ok
Chassis-2       N5548P-FAN           --         ok
PS-1            N55-PAC-750W         --         ok
PS-2            N55-PAC-750W         --         ok


Temperature
-----------------------------------------------------------------
Module   Sensor     MajorThresh   MinorThres   CurTemp     Status
                    (Celsius)     (Celsius)    (Celsius)
-----------------------------------------------------------------
1        Outlet     67            58           39          ok

Thanks in advance!

1 Reply 1

InayathUlla Sharieff
Cisco Employee
Cisco Employee

Hi Blake,

In terms of troubleshooting, there is very little that can be done based on the symptoms

you described so let's proceed with the replacement.

Regards

Inayath


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