When we wire up a rack-mounted Ethernet switch, we use the Panduit style cable managers for a very clean look. Unfortunately with all the patch cords mounted in the wire manager, it’s very difficult to tell what patch cord is mounted to a given switch port. To get around this problem, we label both ends of the patch cord with the patch panel port number, which makes it easy to identify which patch cable is plugged into a given patch panel port and switch port. Often these labels can come loose and over time fall off. We have found that the Tyton wire marker tape labels stay on patch cables the best. Give them a try; they’re not cheap but they do stay on the patch cable. You can find more information at http://www.avsupplystore.com/wmtk.html.