I have several production facilities that I oversee. One Friday one of these facilities had a series of thunderstorms during which roughly 20 IP phones quit working as well as the plants internet connection. The ports where my IP phones are connected were reporting:
"Apr 17 09:20:47.968 CST: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi0/41: Power given, but Power Controller does not report Power Good"
We moved the phones to different ports and they were all working fine once moved. We tried resetting two of the switches and reconnecting phones to their original locations to no avail.
While the phones were connected if I did a "show power inline" those ports were showing faulty. This locations ASA also lost its internet connection due to a port getting shorted out as well.
My question is this, is it possible that there was a lightning strike to the plant that backfed surplus electricity through my ethernet network that would cause this action? All of the affected devices were connected to a UPS that was also doing power conditioning and surge suppression.
