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Wireless Networking Guide
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Original article found
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The Dawn of the Wireless Networking Renaissance It's Time to Go Wireless!
Although we're constantly hearing about the miracle of wireless
technology, we're merely at the dawn of the Wireless Renaissance. From
Auckland New Zealand to Mt. Everest, Internet cafes and other wireless hot
spots dot our increasingly interconnected globe (yes, there really is an
Internet Café at a Mt. Everest base camp), but the best and most ingenious
use of this breakthrough innovation is yet to come. For now, the wireless
gold standard is 802.11g - - the newest, fastest and most powerful 802.11
radio technology that broadens bandwidths to 54 Mbps within the 2.4 GHz
band. Because of backward compatibility, older and slower 802.11b radio
cards can interface directly with an 802.11g access point and vice versa at
11Mbps or lower, depending upon range.
We've come a long way, baby - just in the past couple of months. That's
how rapidly the wireless net that will someday encompass the entire globe is
morphing. Much quicker than we write these words, technicians are gleaning
new ideas that will revolutionize the way we communicate. From Marconi (the
inventor of wireless communication back in the late 19th Century) to 802.11g
- the sky is not the limit for how far we will take the wireless renaissance
- it was merely a suggestion that we rejected long ago.
Rating
the 802.11 Wireless Standards
In 1997, when the Institute of Electrical and Electronics Engineers (IEEE)
created the first WLAN standard they called it 802.11. Because it could only
support a maximum bandwidth of 2Mbps - far too slow for most of today's
applications - ordinary 802.11 wireless products are no longer being
manufactured. The next wireless incarnation was 802.11b, which supports
bandwidths of up to 11Mbps, followed by the creation of 802.11g, which
supports bandwidth up to 54 Mbps and signals in a regulated 5 GHz range.
While 802.11g is the fastest wireless technology, is it the best for your
home or business? Here is a brief synopsis of the three primary 802.11
standards:
- 1.
802.11b - This technology supports bandwidth up to 11MBps, which is
comparable to the speeds of traditional Ethernets. 802.11b uses the same
2.4GHz radio signaling as the original 802.11 standard. Because it is an
unregulated frequency,
802.11b devices run the risk of incurring
interference from appliances that use the same 2.4 GHz range, such as
microwaves and cordless phones. However, if you install
802.11b devices
out of range of other appliances, you can avoid the interference. Some
manufacturers prefer using unregulated frequencies, such as
802.11b to
lower their production costs. On the negative side,
802.11b is relatively
slow and supports fewer simultaneous users.
- 802.11a - IEEE created 802.11a at the same time it made
802.11b.
802.11a supports bandwidth up to 54 Mbps and signals in a regulated 5 GHz
range. This higher frequency limits the range of 802.11a in comparison to
802.11b, and due to its higher cost it's used primarily in the business
sector rather than in homes. 802.11a's higher frequency also causes its
signals to have difficulty penetrating walls and other obstructions.
Because they utilize different frequencies, 802.11a and 802.11b devices
are incompatible with each other.
-
802.11g - This technology supports of up to 54 Mbps, uses the 2.4 GHz
frequency and is backwards compatible with 802.11b devices. 802.11g
supports more simultaneous users, offers the best signal range and is not
easily obstructed. The disadvantages of 802.11g is higher cost and
possible interference with appliances on the unregulated signal frequency.
The Evolution of 802.11 Wireless Technology
1997 - 802.11 - 2 MBps
1999 - 802.11a - 54 Mbps in regulated 5 GHz range. Pro: Fast access. Con:
Limited range
1999- 802.11b - 11Mbps in 2.4 GHz range
2002 - 802.11g - 54 Mbps in 2.4Ghz range and is backwards compatible with
802.11b, meaning that 802.11g access points will work with 802.11b wireless
network adapters and vice versa. Pro: Faster access and backwards
compatibility. Con: Higher cost than 802.11b.
Why
Connect?
According to International Data Corp. (IDC), about half of all U.S.
households have a computer, and a much higher percentage of businesses use
PCs. Tens of millions of these homes and businesses have more than one
computer one. In fact, market research shows that current PC owners buy most
of the new computers. This means that multi-computer households are becoming
increasingly more common. If you are one these multiple-PC owners, you have
probably thought about how great it would be if your computers could talk to
each other. With your computers connected, you could:
- Share a single printer between computers
- Share a single Internet connection
- Share files such as images, spreadsheets and documents
- Play games that allow multiple users at different computers
Here are the advantages of wireless networking:
It's fast (11 - 108Mbps).
It's reliable.
It has a long range (5,000 feet in open areas, 250 to 400 ft / 76 to 122 m
in closed areas)
It's easily integrated into existing wired-Ethernet networks.
Virtually all 802.11g wireless networking products work with each other no
matter what brand or model. Wireless offers Ethernet speeds without the
wires. Access points vary greatly in cost, from about $59.99 to $1,400.
Access points have an integrated Ethernet connection to connect to an
existing wired-Ethernet network or routers provide connectivity to a
high-speed data connection (DSL or cable modem). It also has an
omni-directional antenna to receive the data transmitted by the wireless
transceivers. Integrating PCs and Apple systems on the same network is also
possible with the 802.11g standard. The majority of wireless network
adapters used are in
PCMCIA card form. But some manufacturers do offer USB
adapters or
PCI format cards. The cost per card ranges from $39 to more than
$300. They are not typically sold in "do-it-yourself" kits. Instead,
everything is a la carte, allowing customers to build a system that exactly
meets their needs.
For
businesses, the benefits of wireless technology are dramatic; we are not
using hyperbole when we assure you that it will revolutionize your company.
A wireless infrastructure makes it easier for you to adapt your office space
as your company evolves. And the productivity gains you will reap dwarf the
relatively inexpensive cost of setting up a wireless local area network
(LAN). Here are the primary benefits your business will receive by going
wireless:
- Reduced Installation Costs - It's less expensive to install
wireless access points than wiring your office with
Ethernet capabilities.
Plus, you will not have to knock holes in walls to set up your network.
- Flexibility - If your company is growing rapidly and you need
to constantly reorganize your space to accommodate ever-changing
networking configurations, wireless networking provides rapid transition
times, reduced down time and will not cost you as much as you would have
to pay to rewire your office space. By setting up a network, you will be
able to easily share devices, programs and technology with multiple
computers. You can share peripheral devices, programs and technology to
streamline your business and make it much more efficient.
- Convenient Information Access and Increased Productivity -
Wireless delivers information access to anyone on your staff, from
anywhere in your office. Most offices that have made the transition from
wired networks to wireless systems have experienced remarkable increases
in productivity.
It's Not as Complicated as You Think!
Most people think that networking your home or small office can be painful,
with lots of wires, connections and other challenges. Plus, you have to make
everything talk to each another. Don't fret, because it's not as much of a
challenge as you might think. With most people using Microsoft Windows
operating systems, networking has been built-in since Windows 3.11.
Introduced in Windows 98, "Internet Connection Sharing" is a standard part
of the operating system, allowing one computer to share an Internet
connection with all computers on the home network. So, if you are running
Windows, you can share files, printers and resources across your network
without too much of a hassle. Following are 3 easy steps that will allow
even a novice to setup a wireless network.
Wireless Networking Made Simple
3 Easy Set Up Steps Even the Novice Can Master
1. Plan Your System - Before you dive into the wireless world,
make sure you know what lies ahead of you. Make a thorough analysis of your
networking needs, what you need to accomplish, and what you expect to
receive as a reasonable return on your investment. Assess your networking
needs; determine how many workstations you'll need to connect and where you
can best utilize them. Also, take an inventory of what upgrades you will
have to make to your existing computer equipment and decide what equipment
you will need to purchase. These are the types of devices required for your
wireless network:
-
Wireless Access Point - This is the
"controller" of your wireless network. There are two types of access
points - hardware access points and "integrated" access points. Hardware
access points are used as an extension of an existing wired network.
"Integrated" access points also provide the features of a router, and are
connected to a high-speed connection (i.e.: DSL or cable modem. Access
points generally can serve at least 50 users, so exceeding the connection
limits is rarely an issue. Remember that when you are networking, your
connection is shared with all active users. Having an 11, 22, 72, 108 Mbps
network connection does not make your Internet connection "faster,"
however, it will allow faster data transmission between the users on the
same wireless network. So, if you are planning on copying a bunch of files
from your bedroom computer to the living room computer, or watching a
video you recorded in your living room on your bedroom computer, the data
transfer speed is great. While surfing the Internet, you may see a
decrease in access speed to the Internet if your son is downloading MP3s
in his bedroom and you are trying to watch an online video. Your wireless
connection speed will vary based upon your location (i.e. out by the pool
vs. across the room from the access point), however proper placement of
your access point can assist in providing the best service to all areas
you intend on using a wireless connection. We carry a wide-range of
wireless access points, including some which combine a multi-port wired
hub so you can utilize one device for both your wired and wireless
connections.
-
PCMCIA Wireless Adapter - This is
generally used for laptops. A PCMCIA card simply plugs into your notebook
PC Card slot, and after configuration with the software provided with the
card, will connect to any detected network. Some access points allow for
configuration of security so only "allowed" cards are provided access.
This will alleviate any problems if your neighbor decides to ride on your
Internet service for free once they see you using the Internet out by your
pool. Desktop PCs can also be connected to a wireless network by using an
inexpensive PCMCIA-to-PCI adapter, which allow for fast, easy connection
of a desktop PC through the use of an internal adapter card that the
PCMCIA card slides into.
- Compact Flash Wireless Network Adapters -
If you have a handheld device, which includes a CF Type II slot, you can
connect it to your wireless network using a Compact Flash Wireless Network
adapter.
-
USB Wireless Adapter -Great for use with
desktop PCs, a USB wireless adapter allows you to
connect your system to the wireless network without installing any adapter
cards or opening your PC whatsoever. These are a convenient and easy way
to add wireless networking to an existing PC in your home. Additionally,
based on user feedback, an external USB device has better reception than
an internal PCMCIA card in the back of your computer, as you can move it
around for the best reception.
- "Wired" And "Wireless" Together - "You
can actually build a network comprised of Integrated access points, for
both wired and wireless communications. Why would you want this? Well,
let's say that you have the ability to run wire for the systems in your
home. The cost is less per computer (an Ethernet NIC runs about $10.00 and
the
cable anywhere from $5-10) and you may have them easily accessible via
cable. There are many mixed-mode devices, or "Gateways" available. For our
full selection of Integrated Access Points. This device allows you to
connect to a high-speed Internet connection (via the WAN port) and up to
three wired devices (on the Ethernet ports) and up to 253 devices via the
wireless access point built into the unit. This allows you to have
standard desktops connecting with roaming notebooks and other devices
where wiring is just not possible.
In summary, if you want to run a network in your home or office, it really
isn't that tough! Pick the right parts to your network "puzzle" and get
the best deal available. They'll work together and you'll make better use
of ALL your resources
2.
Setting Up Your System - Now that you have a plan in place that
defines exactly what your equipment needs will be, how you will configure
your network and what goals you expect to accomplish with wireless
technology, it's time to set up your network. Before you take this step
(don't worry, it's much easier than it seems), you must develop a good
working understanding of the equipment involved in a wireless network.
Wireless LAN equipment consists of wireless clients - the notebook
computers, printers or handheld devices that can communicate over a wireless
LAN - and access points, which are the points that accept the wireless radio
signals and then connect the LANs. Your access point is the central
communications point for your computers. These
Now it's time to build the wireless LAN! Again, don't panic - you will be
amazed how simple it is. Here is what you have to do:
- Determine how many people will use your network; this will tell you
how many access points you will need.
- Choose a central location for your LAN connection. If possible, this
should be in an open environment to maximize your wireless range. Walls,
cables, pipe, etc. within your existing environment can compromise your
range.
- Configure your wireless network to work with your network.
- Test your installation before going live. With link test software you
can find out what percent of your data is being sent correctly, how much
time it takes to receive a response from the destination device, how the
strength of the transmitted signal.
- Establish a protocol for managing your wireless LAN.
3. Implement security measures to protect the integrity of your wireless
network - Remember, wireless communications transmit through the air rather
than over a closed capable. Therefore, maintaining security over your system
requires measures that are specific to wireless. Wireless security solutions
include Media Access Control (MAC), WEP encryption and Traditional VPN
(Virtual Private Network) securities controls. Following are brief summaries
of these solutions:
- MAC - Media Access Control restricts network access by unauthorized
devices by assigning each network card a unique hardware identification
number.
- WEP Encryption - A software algorithm that scrambles outgoing data and
unscrambles it when it is received, maintaining its integrity while en
route.
- Traditional VPN (Virtual Private Network) security controls - Allows
users outside your system to gain access to your network. VPNs encrypt
data prior to transmission over a wireless link, ensuring data security
even if it is intercepted. VPNs are particularly critical when you are
using a public hot spot.
Three simple steps - that's all it takes to join the wireless revolution
- along with a relatively small investment in new technology that you will
recoup many times with your exponentially improved efficiency and
streamlined operation. We have the expertise, incomparable product line and
unparalleled pricing to help you become experience all the advantages of
benefits of wireless technology.
Installing your Wireless Network in Nine Easy Steps |

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