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What is a BSSID?
It's the password used to decrypt WEP, WPA or WPA2 in a WiFi broadcast.
It's a name given to a WIRED AP (access point), such as Kim's Network. Therefore, it's the wired equivalent of an SSID.
It's used to identify specific devices connected to the same WiFi network (WLAN.)
In a WiFi-connected device, it's a substitute for a MAC address.
Packets bound for devices within the WLAN need to go to the correct destination. The SSID keeps the packets within the correct WLAN, even when overlapping WLANs are present. However, there are usually multiple access points within each WLAN, and there has to be a way to identify those access points and their associated clients. This identifier is called a basic service set identifier (BSSID) and is included in all wireless packets.
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