Matthew Stibbe's Homepage Writer Everything I've Written Wireless Networking

Wireless Networking

Headlines:
This review looks at 802.2b wireless networking products.

At IG, we spent a lot of money putting in network sockets throughout our building.  Like electricity sockets, the majority of these weren’t used but had to be there in case we changed the layout of the office.  How much better and cheaper if it had all been wireless?  Now several companies have come out with wireless networking solutions that would make this possible.  I looked at two offerings: 3Com’s Airconnect and Intel’s Pro/Wireless 2011 to see how suitable they would be for a small business.

Both systems are physically similar and use the same networking standards (IEEE 802.11b to be specific) so they are interoperable.  Like a cordless phone, they have a base station and a much smaller mobile unit in the form of a card that plugs into each PC.  The base stations are both smaller than a laptop and can be connected into a physical network hub, for instance to connect them to a file server or Internet connection.  Each base station can handle traffic from up to 63 individual PCs.  The network cards themselves are conventional credit-card sized PC Cards with a small bulge that sticks out of the computer containing the transceiver.  Both companies also do PCI cards that plug into desktop PCs but neither company could supply one for review – they’re rarer than a clear head on new year’s day.

At first I had some trouble setting up the 3Com system.  It was the first to arrive and I didn’t really give a lot of thought to how it would work.  I spent a morning trying to get my two Toshiba laptops to talk to one another but they absolutely refused.  However, this was more a problem with PC networking generally than the specific hardware.  The next day, I went back to basics.  I set up a simple wired network using a 3Com OfficeConnect four-port mini-hub, some bits of cable and conventional network cards.  I then set up the proper protocols on all the machines and made sure they actually worked properly.  Once this was done, it was easy to swap each wired network card for a wireless one and everything worked first time.  The mini-hub came with a very thorough CD-based tutorial in setting up a network which I think would have been very useful for a network neophyte and I think it is an omission that the wireless kits didn’t come with something similar.  The Intel system was just as easy to set up and also worked without any problems.  Indeed the two looked so similar that I did wonder whether they were, in fact, the same kit in different boxes.  In any case, there was nothing to differentiate them in terms of size, performance, drivers or capabilities.

Now the technical stuff: these wireless systems can handle up to 11mb/s which is about the same speed as most conventional networks but not nearly as fast as the newer 100mb/s networks that we used at IG.  However, the slower speed is okay for normal office use.  Performance degrades with distance and obstructions like walls but, in ideal conditions; ranges of up to 300 feet are claimed.  It is possible to install several base stations around a building and roam from one to another seamlessly.  On both systems, data transmitted over the network can be encrypted for security but, curiously, this is not the default option and you have to manually reconfigure the base station to enable it.

Although available as individual components, 3Com offer a wireless networking starter kit containing everything you need to wire up three laptops.  This costs about £900 (all prices exclude VAT) and each additional network card costs £115.  Although this is more than a conventional network solution, it doesn’t take into account any savings in cabling and hubs.  Intel’s base station costs £600 and each network cards costs about £120.  You should probably plan on buying at least a mini-hub if you don’t already have any network infrastructure so you can hook up file and print servers.  Mine was the simplest and cheapest I could find and it cost £30.

I write this on my laptop.  There are no wires connecting it to anything, yet I can access my ADSL Internet link (thanks to Internet Connection Sharing built into Windows 98), print things to my printer and save this file on my main desktop machine.  It’s very cool and, at the same time, tidy and efficient.  If, in the future, PCs can be hooked up to next-generation mobile phones the same way, this is a taste of the future and a very welcome one.  For businesses today, especially businesses with under a few dozen employees or in awkward and unwired buildings, wireless networking could be a great benefit.  

Websites

3Com:  http://www.3com.com/mobile/wireless/index.html

Intel:  http://www.intel.co.uk/network/products/wireless.htm