So... curiosity for the day. We recently installed some TL-SG1024 switches that replaced older versions. Everything works as intended except I experienced something I've never had happen. Since this is a first I wanted to ask if I'm missing something. I did a quick search which yielded no results.

We needed to trace a cable today in one of the offices. We used a Network Fluke and Wand. After many failed attempts of locating the cable I started a process of elimination. All failed to be fruitful until I attempted to retrace my own cable, which I had done twice the previous week. Since I knew where it was I tested it directly and it failed to trigger a response from the Fluke Wand.

Finally I unplugged my cable from the TL-SG1024 and the wand started chirping immediately. I then decided to use a different network tracing tool to locate the original that was having an issue. It located the cable but with intermittent / flaky results but I was able to identify the correct cable after some time. After I verified this was the correct cable I unplugged and tested. The fluke wand started chirping.

Next I plugged the cable into a completely different switch and it located it fine. I plugged the cables back into the TL-SG1024 and had dead silence. We installed 2 of these units. I tried both with same results. Unable to trace cables plugged into the TL-SG1024, but able to find them if unplugged or in a different set of switches

Can someone point me into the explanation as to why these routers cause an issue tracking the cables where others do not?

Thanks in advance!