I have many ISW 8gbp , 4-sfp , poe switch
There are several isw equipment, and suddenly since last week, one port in several isw is marked Invalid PD. The other port is normally marked as turned on. Both ports are connected to cctv.
Could this happen because the equipment gets cold due to the weather??
May I know several cases and solutions that are marked invalid pd??
please help me~.~
