I am currently have an issue on a catalyst express 500 switch (POE) whereby the link to the rest of the network (link into 3560 switch) disconnects whenever i unplug or plug anything in to the ce500. the voice and data (dont ask why!!) are on the same vlan so essentially the switch doesnt need to be doing anything clever. all it needs to do is what a dumb switch would do. anyone have ideas as to why this would happen!?
I have this problem too.