Is Wiring Your Home Worth It?
I just bought a new house, and while I'm going to miss not having to mow my lawn, one thing I certainly won't miss are all those Ethernet "alternatives". While Wi-Fi is fine for surfing the Internet on the couch while I watch TV, it doesn't cut it for always-on or high-bandwidth applications--like the Vonage line my wife uses for her home office or streaming video (especially high-def content). Powerline is OK, but the adapters are very expensive, and I continue to be concerned about the security of the format--the software you use to lock powerline adapters down is a big pain in the ass too.

Yes, this is a flattering shot. In an unusual twist, the entrance to my crawlspace is inside my pantry.
So, one of my first tasks in my new house (aside from painting the entire thing) was to rewire all the living areas and the garage for an old-school Cat5e network. This Sunday, I donned my coveralls, strapped on my kneepads, and turned on my headlamp before I crawled under the new house and pulled some wire. It took six full hours to pull the cable, but now that that is done, I'll be able to enjoy glorious gigabit file transfers everywhere in the house, and it was definitely worth that.
I'm going to writeup a full how-to (along with Michael Brown, who is in the midst of a similar project) for an upcoming issue of the magazine, but I'll walk you through the basic scheme here. The first thing to do is plan out your network. That means you need to determine where you want Internet to come into the house, which rooms you want ports in, and where you want to terminate your cable runs.
For my house, I placed my router, cable modem, home server, and Vonage box in my garage. The cable... um, cable comes into the house through the garage, and I have a handy little shelf in there (complete with a power outlet or three) for all the necessary gear. Unfortunately, I had to drill a hole through the poured concrete foundation of the house. Luckily, a footlong 3/8" bit was enough to handle the task.
Next, I determined the location for the home-run. Normally, you'd also terminate each of the cable runs near the router, however, I chose to do something a little different so that I didn't have to run wires from each of my rooms all the way out to the garage. My house is a little odd, with the crawlspace entry inside the house, in the floor of a closet. I chose to put my home run (the termination point for the runs from each of the rooms) there, and place a network switch in the crawlspace near the entrance. This meant I only needed to make the hole between the garage and the house big enough for a few cables, and I didn't have to run the cables from every room to the garage. Finally, to save $100, I made a hoopty patch block by hammering a standard new-construction mud ring into the floor joist, and mounting six standard Ethernet ports to a 6-port modular face plate instead of buying a 24-port "for corporate use" patch block.
The only catch with this scheme is that I don't have power in the crawlspace for the switch. To solve that hurdle, I'm actually using Power Over Ethernet equipment, which sends the necessary current over the two unused pairs of wire in the Ethernet line. The home kit I'm using includes both a transmitter and a receiver. I'll plug in a transmitter at an Ethernet port that's near power, then plug the reciever in at the other end, and split out the necessary voltage. I've never really used this before, so I'll be interested to see how much it affects available bandwidth between my server and the rest of the house. I have an electrician coming later in the week, and I'm probably going to get him to add power down there, just in case. I'll report back on the performance of the POE stuff once I've got it up and running.
Since I was under the crawlspace anyway, I decided to actually run multiple cables at the same time. For the normal rooms, I ran two Cat5e cables (one for voice and one for data) as well as a single RG6 cable (for cable or satellite). This will give me plenty of dead wire to exoand or add new capabilities, if I need them at a later date. I pulled two Cat5e and two RG6 to the garage, so that I'm satellite-ready, should I decide to upgrade to a dish.
Before pulling any cable, I measured out the appropriate lengths for each run, being careful to add at least ten feet to the maximum possible length I thought I'd need at either end. Then, I bundled all the cables going to each room together with masking tape, labelling both ends. I also should have labeled which Cat5e cable was each at both ends (voice and data), but I can figure out which is which fairly easily by wiring each jack multiple times.