802.11 uses the same Ethernet frame format but rides on radio. This chapter explains the autonomous vs split-MAC architectures, the SSID/BSSID/ESSID terminology, channel planning, and where the WLAN controller fits.
SSID — the human-readable network name (e.g. 'CORP-WIFI'). BSSID — the MAC address of a single AP's radio. ESSID — the same SSID broadcast by multiple BSSIDs so a client can roam between them seamlessly.
2 more sections in this chapter, plus a 3-question quiz.
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