WLAN Basic Topology
As previously discussed, even though the distribution system and the wired medium could be different, usually there are only two infrastructures: a wireless environment/infrastructure consisting of STAs/clients that is connected to a wired environment/infrastructure through APs.
Figure 4-3 shows one possible simplified topology as a perspective to compare and contrast functionalities of DS and WLAN.
The authentication, authorization, and accounting (AAA) infrastructure is part of the distribution system. Usually the RADIUS server is specific to the WLAN ...
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