Description

Have made zero changes to switches - noticed both Master and backup are showing red alarms - Got into the CLI and "show system alarms" shows the following: FPC 0 PEM 0 is not supported Means nothing to me. All 6 power modules are showing green. Fans also showing green

Symptoms

Following alarm will appear, 
Major  FPC 0 PEM 0 is not supported/powered
Even though, PEM will be showing green lights.

Solution

Once we realized about the alarm showing PEM not supported but the PEM modules were showing green we came up with following PR,

https://prsearch.juniper.net/problemreport/PR1718825

 

Device was upgraded to one of the fixed codes and the alarm disappeared

Modification History

2023-10-10 : Article Created