Nerding out: how we wired our house for ethernet

Guestpost by Kellbot on Mar 28th

Snipped Ethernet © by GlennFleishman, used under Creative Commons license.

When we bought our new place in December we knew one of the first things we wanted to do was install wired ethernet connections. Not only will this make it easy to set up multiple wireless access points for better coverage, it will also provide a high speed backbone for data throughout the house.

In addition to bringing the internet connection to each room, the wired local network (LAN) will allow us to stream high quality video and audio throughout the house.

First, why hard-wire for ethernet at all?

Setting up a wired LAN in your house is somewhat unusual, because most people do just fine with a wireless connection. But it does offer some distinct advantages over an exclusively wireless network:

  • Faster speeds and lower latency: The wired network is about 20 times faster than a wireless one. It won't make our internet connection any faster, those speeds are limited by your ISP at much lower rates than even wireless data transfer, but it will make data transfer within the house super speedy. Wired networks also have lower latency, which is important for gaming and other real-time communications.
  • More reliable connection: Since wifi signals are radio waves, they're subject to interference from other devices and objects. A wired connection won't drop when you turn on the microwave.

Now, how to install the cables

Each room in the house needed two or more ethernet cables, all running down to a closet in the basement. I'm not going to lie, running thousands of feet of cable through our walls was not a small task. Our place has four floors including the basement, and at 7 months pregnant I'm not exactly handy around the house. We hired an electrician to run the wires, and then did all the terminating and finishing ourselves.

We installed a total of 34 drops (aka individual cables) and went
through about 4 boxes of Cat6 ethernet cable.

Cat6 wall

Here are two unterminated cables sticking out of the wall, just as the electrician left them. The orange ring is a bracket for the faceplate to screw into. Each cable gets a RJ45 keystone jack, which is the little plastic connector you plug your ethernet cable into. Cat6 cable is made up of 8 individual wires, each of which is arranged carefully in one of the slots on the keystone jack. In the photo below, the near side has been punched down, which pushes the cable into the slot and trims the excess. The far side is still waiting to be done. The black plastic holder makes it easier to keep the jack from flying out of your hand, as the punchdown tool requires a fair amount of pressure.

Cat6 Keystone

The keystone jacks snap into a faceplate, which is then screwed into the bracket in the wall.

Cat6 PlatedWires

All the cables run down through the house into our basement closet, which is where the router, switch, and media server live. Each drop has a small sticker on either end to help us keep track of which one goes where. To save my sanity, I used masking tape to temporarily keep the basement wires in alphabetical/numerical order while working on them.

Cat6 Sorted

Instead of individual keystone jacks, the basement ends are terminated into one of two patch panels. This makes them easy to access when we're ready to plug them in. Just like upstairs, the individual Cat6 wire strands are punched down into the slots of the patch panel. I placed some green felt down to protect the tile floor.

Cat6 PanelBeck

Once everything was punched down, the patch panels were mounted into a half-height server rack. If you're going for a more minimalist setup, there are smaller wall-mounted brackets you can use for your patch panels.

The lines from the walls (blue) go into the patch panels, and from there some short 6" ethernet cables (rainbow) connect each jack on the patch panel to a jack on the switch. The switch acts like a hub, connecting all the cables to the same network. We had so many lines we needed to get two switches. Each switch is plugged into our router (the small black box floating haphazardly on top of the rack). By plugging our Comcast modem into the router, we're able to share our internet connection with every device connected to the LAN anywhere in the house.

Patch Cables

Since we do still need wifi signal, we connected an old wifi access point to one of the jacks on the top floor. The router in the basement is also a wifi access point, and the two cover our house fairly well.

There's a little bit of configuration needed to keep the access points from interfering with the main router (specifically, turning off DHCP).

The next step for us is to set up the media server, which is a computer that will be mounted on the server rack to share all our videos and music with all the other computers on the network. We're using a program called XBMC to manage and watch our videos.

Why NOT hard wire for ethernet?

If a hard wired LAN is so awesome, why doesn't everyone have one?

  • Cost: Even if you do everything yourself, the cost of the materials adds up. You'll need faceplates and jacks for every drop and a patch panel for wherever it's all terminated. There are also a few specialized tools needed which are a bit pricey for a one-time job. On top of that, you'll need to purchase a switch and router to manage the network. The total price for hardware will run from around $500 up into the stratosphere, depending on how big your place is and how fancy you want to be.

  • Hassle of Installation: Dragging cable throughout the house is hard work. No matter what shape your house is in adding a LAN to an existing home will involve punching some holes in the wall, and If you've got insulation-filled walls like ours, you may end up needing to cut quite a few. If your place is small enough, you can get away with running the cables along the baseboards.

But if you decide this is right for you, I hope my overview of installing Ethernet helps!

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About Kellbot

Kellbot is a crafty hacker who is in the middle of a three part crash course on becoming a grownup by getting married, buying a house, and having a baby all in the same year.

http://home.kellbot.com