So I tried your solution but again no success. I did excactly as you show in the picture, I even added about 5 of these still nothing. I tried one every 2 meters of the cable, nothing. I tried to install them also down on the rack side again nothing changes. I tried with 3 different 3000L all exactly the same behaviour. Yesterday we had a light rain and it went completely down, no link at all. After the rain stoped it came back by itself at 100Mbps HALF Duplex.
I don't know if we are missing something or doing something wrong but putting an 1000 there has no problem at all. We are kind of desperate with the 3000L...