Catalyst C9K : which power supply is in use ?

[mfradin]

Hello

I have Catalyst c9200 and c9300 whith  2 power suply 
How can I know which power supply is used?
maybe both at the same time?

Thanks
Marc

[Htonieto]

You can use the show environment power all to check, if you have redundat power supplies they will automatically switchover in case of failure or power disconnection.

#show environment power all
SW PID Serial# Status Sys Pwr PoE Pwr WattS
-- ------------------ ---------- --------------- ------- ------- ----
1A PWR-C1-715WAC-P DCC2348XXXX OK Good Good 715
1B Not Present
2A PWR-C1-715WAC-P DCC2422XXXX OK Good Good 715
2B Not Present
3A PWR-C1-715WAC-P DCC2422XXXX OK Good Good 715
3B Not Present
4A PWR-C1-715WAC-P DCC2348XXXX OK Good Good 715

[Reza Sharifi · Accepted solution]

Hi,

Usually, the power supplies are configured in redundant mode, meaning the switch uses the first power supply that powered up the system and uses the second one when the first one goes offline. I am not sure if there is a command that shows which one you are using.

HTH