A Client Joins a BSS
Suppose a wireless device is not currently joined to a wireless network. The device comes within range of two different APs that form a single ESS and offer a common SSID. The device performs an active scan and discovers the two APs. Through some algorithm, it decides that AP-1 is more preferable than AP-2. Figure 6-11 shows the steps that the device takes to join the network offered by AP-1.
Figure 6-11 A Wireless Client Joins a BSS.
Step 1. Host-1 sends an authentication request frame to AP-1’s BSSID address.
Step 2. If ...
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