My port fa 0/2 of WS-C3560 is down :
FastEthernet0/2 is down, line protocol is down (err-disabled)
I'm using the cable crossover with furukawa switch.
It was functioning before( 1 year) but now it started to give this message. Why?
Looks like a speed/duplex mismatch. Try hardcoding the speed/duplex of both device port connected to each other. This happens to me even the switches has been running fine for years but in the background they keep negotiating the speed/duplex.