3850 POE Suddenly Stopped Working for Random Ports

[exd42062]

I have a stack of 3 3850 switches and suddenly a few ports stopped supplying POE.  After rebooting the switch, the POE started working again.  The version is 16.3.8.  Anyone sen this or have any clues that could help?

[vb10]

Hello,

There are multiple PoE bugs with such symptoms, for example, this one:

https://quickview.cloudapps.cisco.com/quickview/bug/CSCvd46008

And as far as I remember, there were couple of more.

It will be hard to troubleshoot it here, you better need to open case with TAC to check exact cause.

[balaji.bandi]

You can upgrade to Fuji the bug is fixed.

Fuji-16.9.3a MD

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-9/release_notes/ol-16-9-3850.html

[Leo Laohoo]

Raise a TAC Case.
There are two well-known MOSFET bugs: CSCvj76259 & CSCvd46008