I have a SG220 50P switch that lost all POE power to all ports. We have performed a reboot and and power rest on the switch with no results. POE was running VOIP phones. We had sporadic POE issue over the last few months. The Port Management POE pro...

I have a number of SG220 -48 POE Switches (1.0.0.8) where I find a grouping of ports stop working.Example Port 13-16 Ports 37-40I have checked the port status using the CLI and GUI and performed "shut , no shut"I have also checked the spanning-tree s...