We recently installed 3 2980X switches in a stack and now only after about 2 months we are getting reports of network disconnects. After researching we are seeing the following errors in the log on a handful of ports.
%ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi1/0/9: Power Controller reports power supply VEE under voltage and lockout
IOS Version 15.2(2)E4
These ports do not currently have POE devices plugged into them but each time the error occurs the port drops and the individuals lose network.
Thanks