Anybody who's ever worked with servers and even a small LAN environment knows (or should know) how messy things can get. Cables, routers, hubs, servers and so on.
Everything crawling where it shouldn't go, and good luck finding that one cable that's preventing John's PC to connect to the rest of the Intranet when John works on the first floor and the servers where you need to check it are on the third floor.
So, for everyone here who works in environments like this: how do you keep it clean? A clean environment means at least some improvement in efficiency, so what are you tricks? What are the absolute do's and don'ts and why?
Or do you enjoy some Spaghetti? 
Best Answer
Label both ends of every cable.
The cable should clearly show where each end is going, and you should be as specific as possible.
For example, a label in our data center looks like this:
The same label is put on both ends of the cable so no matter which end you are looking at you know exactly where the end point is.
With this simple process even a mess of spaghetti cables can easily be handled. The biggest problem with spaghetti cables is when you are forced to hand trace a cable to its end point.
However I do recommend cable management to avoid the physical mess :-)