I have a Cat6 network cable that doesn't seem to work in my switch or router. The cable in question is running within the walls of the building, so it's not as simple as just switching out the cable.
I put a new end on the cable. I've used a network tester that plugs into both ends of the cable and runs through each strand 1-8 and lights up on the tester. All 8 lights come on in sequence at both ends. But when I plug the cable into the switch or the router, the lights on the front of the switch or router don't light up for the jack I plug it into. I've plugged other cables into the open jacks, and the lights come on correctly. I've plugged the cable into multiple jacks on the switch and an open jack on the router. So I'm confident the issue is in the cable. But since the tester lights up all eight lines, i'm not sure where else the issue could be. The cable worked yesterday. But then I was "cleaning" up the cable box and it stopped working. I suspected that i messed up the jack, so that's when i put a new jack on the cable. I've put two new jacks on it, so i don't think a faulty jack is the issue.
Any ideas or suggestions?