Understanding Wi-Fi Performance
by Robin Layland
Posted 8/2004; Published 03/2004

 

Abstract:

 

Much has been said about the security of 802.11 wireless LAN (WLAN), or Wi-Fi. Less has been said about the true performance or capacity of Wi-Fi. Descriptions of the “maximum” throughput, either 11 Mbps (for 802.11b) or 54 Mbps (for 802.11a/g), are generally accompanied by a disclaimer about how your actual throughput will be less. Network managers and architects need to look seriously at Wi-Fi capacity because it will directly affect the user experience and network design, and it is not as easily fixed as security.

 

Network managers and architects must understand the reality of Wi-Fi capacity for several important reasons:

 

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So that the network can be properly designed in the first place.

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Because the Wi-Fi network will more than likely have to be expanded in the future to meet growing user demands.

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Probably most important, so users have realistic expectations.

 

About the author:

Robin Layland is president of Layland Consulting. He has more than 25 years’ experience in enterprise networking including technical and management positions at American Express and Travelers.

 

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