Overview

The previous modules covered the basic theory and operation of wireless technology, as well as wireless NICs and clients. Module 4 will begin to address the design, integration, and practical implementation of WLANs. Module 4 provides a transition from theory to real world WLAN scenarios of new or existing LANs.

Topologies and components of WLANs will be presented first. This will provide prerequisite knowledge, before the network design and deployment phases are introduced. Client adapters or wireless NICs are discussed. The primary function of the client adapters is to transfer data packets transparently, through the wireless infrastructure. These wireless NICs provide transparent data communications between fixed, portable, or mobile wireless devices, and other devices, both wireless and wired. Access points and bridges are also introduced before the student gets experience in designing and implementing wireless networks.

After examining the different types of wireless topologies, channel setup and usage is discussed. As with any good networking setup, a proper design is necessary. There are two critical steps to a good WLAN deployment. First, the placement of access points or bridges must be determined. Second, the channel assignments should be mapped out.

Finally, a number of sample configurations are introduced. The student will have the opportunity to work with the Cisco Network Designer to configure and design different network topologies. This activity will allow the student to determine the feasibility of various network topologies.