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.