Troubleshooting A Fan Failure Using The Cli - Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual

Troubleshooting Fan Issues
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Troubleshooting a Fan Failure Using the CLI

To troubleshoot a fan module problem using the CLI, follow these steps:
Step 1 Use the show environment fan command and verify the status of each fan type. (See
Example 4-2
switch# show environment fan
--------------------------------------------------------
Fan
--------------------------------------------------------
Chassis
PS-1
PS-2
If the fan status is failure, one or more fans are not operational. Replace the failed fan module before
Step 2
your switch overheats. You should see the following system message in the log:
Error Message PLATFORM-1-CASA_FAN_FAIL: Fan module [dec] Failed.
If the fan status is absent, the fan module has been removed. As soon as the fan module is removed, Cisco
Step 3
SAN-OS starts a five-minute countdown.
Caution
Software reads a byte on the SEEPROM to determine if the fan module is present. If the fan module is
partially inserted or if software is unable to access the SEEPROM on the fan module for any other reason,
then Cisco SAN-OS cannot distinguish this case from a real fan module removal. The switch will be shut
down in five minutes. The following priority 0 syslog messages are printed every five seconds:
Error Message PLATFORM-0-FAIL_REMOVED: Fan module removed. Fan module has been
absent for [dec] seconds.
Remove and reinstall or replace the fan module. If the Fan LED is still red, the system detects a fan
Step 4
module failure. Contact your customer service representative for instructions.
Note
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
4-10
show environment fan Output
Model
DS-9SLOT-FAN
--
--
Explanation Fan module failed and needs to be replaced. This can lead to overheating and
temperature alarms.
Enter the show platform internal info command to collect more information.
Recommended Action
If the fan module is not reinserted within five minutes, the entire switch is shut down.
Fan module was removed. This could lead to temperature alarms.
Explanation
Replace the fan module immediately.
Recommended Action
If you purchased Cisco support through a Cisco reseller, contact the reseller directly. If you
purchased support directly from Cisco, contact Cisco Technical Support at this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtm
Hw Status
1.2 ok
-- ok
-- absent
Chapter 4 Troubleshooting Hardware
Example 4-2.)
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