Which Is Better, Ethernet Or Wireless?

This networking question was submitted by a reader recently, and I think it may be of interest to “everyone”.

Q: Paul, I am hoping for some guidance. I will soon be moving, and will have to set up a new network. I have three computers, a laser jet printer and a photo printer. My old network was wired and worked well, but I have heard that the new wireless is faster.

Which is better these days, wired or wireless?

A: I hate ambiguous answers, but in this situation I really must answer, “that depends”. And I must also say that it really isn’t a case of one being “better” than the other.
In my experience, a “blended” network (both wired and wireless) is the most common.

Consideration #1: Mega-bits-per-second:
1) Wire “speed” is typically either 10/100, or 1,000(Gigabit).
2) Wireless “speed” is either 54 (g) or 270 (n).
… and your Internet is coming into your home at.. 1.5? 3? 6 Mbps?
(My point here is that, as far as sharing your Internet is concerned, even a very old 10 Mbps network is “fast” enough.)

Consideration #2: Stringing cable:
Most newer homes are built with Ethernet wiring, and so your network is already there (to a large degree), but for older homes a very real concern — should you choose to go Gigabit wired — is where will the wires go? How will you get them upstairs?

This is not an insurmountable issue (and, you could hire a professional) but it may be that wireless is the best for you.

General advice:
* Networking gear defaults to the speed of the slowest component.
What that means is, let’s say you go and buy a brand-new Wireless -N router (technically, a “WAP”) that runs at 270 Mbps, and the adaptor on your 2 year-old laptop is a “G”, your connection will be at 54 Mbps.
And if the port on your Desktop is Gigabit, and your cable is Cat 5e or better (Gigabit capable), but there’s no Gigabit port on your router.. your LAN is running at 100 Mbps.

The trick is to make sure everything ‘matches’. For instance, in the first example (laptop), buying a Wireless-N PCMCIA card, or USB dongle, will now give you the 270 you bought the fast router for. And for the Gigabit example, a new router that has Gigabit ports will make things ‘match’ and give you a Gigabit LAN.

Last bit of advice: Buy the fastest gear you can afford. You may not get full advantage of it today, but it won’t be a bottleneck tomorrow.

Today’s free link: In today’s article I mentioned that there are alternatives to drilling holes in your wall/floor/ceiling, and one method is EoP (Ethernet over Power lines). This uses the electrical wires already in your home to send your 1’s and 0’s from device to device. Fellow Tech Blogger Bill Mullins has an informative article on this topic here, http://billmullins.wordpress.com/2008/06/16/easy-computer-networking-use-your-electric-wiring/

Copyright 2007-8 © Tech Paul. All rights reserved. post to jaanix

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Wireless standards and you–buying a new WAP

I have been keeping my eye (albeit vicariously) on the new products being premiered at the Consumer Electronics Show and watching for new trends and directions of product development. One trend that I think I should warn you about is happening in the area of wireless networking (aka “Wi-Fi”) for the home– and that is the push to Wireless-N. [note: There is going to be some jargon in this article.. but I promise to try to keep it to a minimum.]

Wireless networking is one of the “coolest” innovations in personal computing. For $50, or so, we can buy a little box (wireless router [technically speaking, a “WAP“]) to stick next to our modems, and then we can surf the Internet and check our e-mail from our laptops and PDAs from anywhere in the house. No longer are we pinned to one spot, or tripping over a tangled mess of Ethernet cables.
In its simplest terms, wireless networking is a type of radio.

To make sure that there was interoperability between WAPs, and computers and WAPs, the IEEE defined standards and assigned frequencies so that all the design engineers would be “on the same page”– and it called those specifications “802.11” (bear with me folks). The most common of these, today, is 802.11g.. and if you go and take a look at your router it will (most likely) have a label that says “Wireless-G”.
(Or, if you paid a little more, it might say, “Super-G”.)

Wireless technology is like any other technology in that the race is always on to make it faster and more capable. The “next generation” in wireless is going to be “Wireless-N” (Don’t ask me what happened to Wireless-H, I, or J…) and, in fact, several companies displayed Wireless-N routers at CES. (See how I tied that together?)
The trouble is, 802.11n is not even a ratified Standard yet. There is no “blueprint” for the engineers to work from. The people who want to sell routers haven’t let that stop them though, and if you go to your local electronics store you will see routers for sale labelled (politely) “pre-N”, or “draft-N”. The indications from CES show that soon they won’t be so polite and will market their newest models as “Wireless-N”.

Tip of the day: If the lure of faster wireless is simply too great for you to resist, and you really don’t care what they call something there are a couple of things you still need to be aware of, and take into consideration when making your purchase.
1) Your purchase will be a temporary one. Things will change when IEEE ratifies and releases the 802.11n Standard, and the router you buy today will probably not be compatible with routers of tomorrow. But that’s not as important as..

*2) If you combine the pre-N/N gear with your existing Wireless-G gear, both will take a serious performance hit, and the G will slow to crawl.

3) You will pay a premium for pre-N/N equipment over G. Prices for the newer routers are in the $100-$150 range (or more).

The solution: The trick here is to be watchful and selective of which model you buy, and look for one that is “dual-band”. That is, it ‘broadcasts’ in both the 2.4 GHz and the 5 GHz range at the same time. That way, you can assign your ‘Wireless-N’ high-speed devices to 5GHz and let your older Wireless-G devices continue to run in the 2.4 GHz range. This will eliminate the incompatibility and interference and allow you to retain the speeds you paid for.
There are several models offered by all the home networking manufacturers (Linksys, Netgear, D-Link) that do this, so the right wireless router will not be hard to find.

If you have purchased a new router, but not secured it yet, I invite you to read https://techpaul.wordpress.com/2008/01/01/how-to-secure-your-wireless-network/.

Today’s free link: C/Net has put together a “Security Starter kit” for those of you who have just acquired a new PC, or are somewhat new to the idea of protecting your computer from the bad guys. This collection of downloads have been featured, individually, here before and this is a sort of ‘one-stop’ collection of highly-rated free security products.

Copyright 2007-8 © by Tech Paul. All rights reserved.

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