ZyXEL NBG-419N Guia Do Utilizador

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Appendix D Wireless LANs
NBG-419N User’s Guide
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with each other. When Intra-BSS is disabled, wireless station A and B can still 
access the wired network but cannot communicate with each other.
Figure 170   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.