I have a 3560G-48PS that seems to get hung up sometimes. It will stop responding to the network(no ping, no telnet). When physically looking at the switch, all port lights that have a device connected are solid green and all blink at the same time. They blink once every few seconds. I have to cycle the power to get the switch going again. I do not see any packet errors when the switch is functioning properly. This switch is connect to my "main" switch via a 1000BaseSX SFP fiber connector and Cat5/5e to the devices. Any suggestions on what may be causing this?
