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Cisco Bug: CSCvt38266 - occational false temperature alarms during XR VM bringup and steady state

Last Modified

Sep 02, 2020

Products (12)

  • Cisco Network Convergence System 5500 Series
  • Cisco Network Convergence System 55A2-MOD-HD-S
  • Cisco Network Convergence System 5504
  • Cisco Network Convergence System 5502-SE
  • Cisco Network Convergence System 5516
  • Cisco Network Convergence System 55A1-24H
  • Cisco Network Convergence System 5502
  • Cisco Network Convergence System 55A2-MOD-S
  • Cisco Network Convergence System 55A2-MOD-SE-S
  • Cisco Network Convergence System 5501-SE
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Known Affected Releases

6.3.3

Description (partial)

Symptom:
Temperature sensor alrams observed during XR VM bringup for a module.

Example : 

0/3/ADMIN0:Jan 13 09:48:05.117 : vm_manager[2762]: %INFRA-VM_MANAGER-4-INFO : Info: vm_manager started VM default-sdr--1

0/3/ADMIN0:Jan 13 09:48:24.102 : envmon[2657]: %PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :I2C access error :CLEAR :0/3: Denali2 Temp has cleared an alarm for I2C access error
0/3/ADMIN0:Jan 13 09:48:24.103 : envmon[2657]: %PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :temperature alarm :DECLARE :0/3: Denali2 Temp has raised a temperature alarm with value of 0

These are false alarms and have no functional impact. Sensors readings are good after initialization(after first OK value),  no issues observed during normal operation.

Conditions:
Module reboot or reseat, any operation that causes XR VM initialization.
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