ZyXEL Communications NBG-419N v2 - Basic Service Set (BSS) and Extended Service Set (ESS)

Appendix D Wireless LANs
NBG-419N v2 User’s Guide
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disabled, wireless client A and B can still access the wired network but cannot communicate with
each other.
Figure 165 Basic Service Set
ESS
An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an access
point, with each access point connected together by a wired network. This wired connection
between APs is called a Distribution System (DS).
This type of wireless LAN topology is called an Infrastructure WLAN. The Access Points not only
provide communication with the wired network but also mediate wireless network traffic in the
immediate neighborhood.