I have a Linksys SGE2000P switch that was installed 3 yrs. ago in one of my IDF's. About a year ago, the power LED started flashing red which indicates the switch is getting power from a remote power supply. Although this was not the case, everything connected to the switch worked so I left it alone. Last week I was recabling some of the switches in this IDF and everytime I unplugged a cable from the SGE2000P it would reboot. Is this a bad swtich or something else?