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Appendix B Wireless LANs
V660 User’s Guide
166
Intra-BSS traffic is traffic between wireless clients in the BSS. When Intra-BSS is enabled,
wireless client A and B can access the wired network and communicate with each other. When
Intra-BSS is disabled, wireless client A and B can still access the wired network but cannot
communicate with each other.
Figure 108 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.
An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their
associated wireless clients within the same ESS must have the same ESSID in order to
communicate.