ZyXEL Communications NWA-3160 User Manual

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Chapter 8 Wireless Screen
NWA-3160 Series User’s Guide
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8.1.2  What You Need To Know About the Wireless Screen
The following terms and concepts may help as you read through this chapter.
BSS
A Basic Service Set (BSS) exists when all communications between wireless 
stations or between a wireless station and a wired network client go through one 
access point (AP). 
Intra-BSS traffic is traffic between wireless stations in the BSS. When Intra-BSS 
traffic blocking is disabled, wireless stations A and B can access the wired network 
and communicate with each other. When Intra-BSS traffic blocking is enabled, 
wireless stations A and B can still access the wired network but cannot 
communicate with each other.
Figure 74   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). 
A
B