Crossed Fibre cables
I had an issue today with four new fibre cables, LC to LC OM3 multimode, the correct type for short distance fibre storage, all good they should work…but they didn’t. No light was coming up on the port, maybe I had me the wrong cable?
I checked and the cable was indeed correct, but it seems at random and without cause your fibre cable can come “crossed over”, this is easy to pick once you’re on to it, the A and B in the connector should be the same colour. As per the above picture my cable was crossed, this is easy to fix as each strand can be removed from the clip and swapped over to match.