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Cisco Bug: CSCvv67857 - SG550X-48: Fans blasting when switches are stacked. No issue when standalone.

Last Modified

Sep 12, 2020

Products (1)

  • Cisco Small Business 500 Series Stackable Managed Switches

Known Affected Releases

2.5.5.x

Description (partial)

Symptom:
When Customer connect SG550X in stack mode, one of them report the following messages:

Alert 	%STCK SYSL-A-UNITTRP: UNIT ID 2,Trap:%Environment-A-ENV-MONITOR-CHNG: sensor 5 (Phy) temperature 92C .Temperature is back to normal threshold    
Alert 	%STCK SYSL-A-UNITTRP: UNIT ID 2,Trap:%Environment-A-ENV-MONITOR-CHNG: sensor 5 (Phy) temperature 96C .Temperature reached the warning threshold

And the fan runs at full speed.

Conditions:
Hardware: SG550X-48-K9-EU
Firmware: 2.5.5.47

SG550X in stack mode. No issue when in standalone mode.
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