I am working with one of our customers who has a 3750G-48TS. They recently noticed that on some of the ports the status LED blinks alternately green/amber under heavy load, and the "input errors" counter for that port increments.
According to the docs I've looked at, this indicates "link fault" and goes on to say that the "input errors" counter includes "runts, giants, no buffer, CRC, frame, overrun, and ignored counts" and "other input-related errors".
All of the counters specifically mentioned (runts, giants, etc.) are zero, so it's none of those. Can someone tell me definitively what "other input-related errors" encompasses so I know where to look next?