Skip to main content
NetApp Knowledge Base

"SwitchFanNotPresent_Alert reported" by CSHM for Cisco cluster network switches

  1. Last updated
  2. Save as PDF
Views:
1,460
Visibility:
Public
Votes:
0
Category:
fabric-interconnect-and-management-switches
Specialty:
hw
Last Updated:

 

Applies to

Cisco cluster network switches

Issue

The following “SwitchFanNotPresent_Alert” is reported by CSHM for all the fan modules of the cluster network switch:

Wed Apr 29 15:53:23 AEST [nodename: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process cshm: SwitchFanNotPresent_Alert[switch(XXXXXXXXXXX)/Fan Module-1].
Wed Apr 29 15:28:23 AEST [nodename: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process cshm: SwitchFanNotPresent_Alert[switch(XXXXXXXXXXX)/Fan Module-2]

Cause

  • This issue is likely to occur when the cluster switches fail to fetch fan related information.
  • The cluster switch health monitor (CSHM) can only detect that a fan or a power supply is missing when the queries to the switch fail to return information about all the fans or power supplies.

Solution

  • Check if any maintenance activity was performed during the time the alert was reported by CSHM
  • Verify if the alerts are cleared after some time, in the event logs:

cluster::> event log show
Time                Node             Severity      Event
------------------- ---------------- ------------- ---------------------------
4/29/2020 15:49:12  nodename         ALERT         hm.alert.raised: Alert Id = SwitchFanNotPresent_Alert , Alerting Resource = switch(XXXXXXXXXXX)/Fan Module-1 raised by monitor cluster-switch
4/29/2020 16:10:20  nodename         NOTICE        hm.alert.cleared: Alert Id = SwitchFanNotPresent_Alert , Alerting Resource = switch(XXXXXXXXXXX)/Fan Module-1 cleared by monitor cluster-switch

  • Login to both the cluster switches and verify if all the fan modules are operating in good condition, by running the following command:

Switch>enable
Switch#show environment fan detail
Fan:
---------------------------------------------------------------------------
Fan             Model                Hw     Direction       Status
---------------------------------------------------------------------------
Fan1(sys_fan1)  NXA-FAN-30CFM-F      0.0    front-to-back   Ok 
Fan2(sys_fan2)  NXA-FAN-30CFM-F      0.0    front-to-back   Ok 
Fan3(sys_fan3)  NXA-FAN-30CFM-F      0.0    front-to-back   Ok 
Fan4(sys_fan4)  NXA-FAN-30CFM-F      0.0    front-to-back   Ok 
Fan_in_PS1      N2200-PAC-400W       --     front-to-back   Ok
Fan_in_PS2      N2200-PAC-400W       --     front-to-back   Ok
Fan Zone Speed: Zone 1: 0x32

  • If this is a one time event and the alerts are cleared on its own, then this can be safely ignored and no further action is required.
  • If the issue persists, contact NetApp Technical Support for further assistance.

 

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.