ZyXEL Communications ZyAIR B-500 User Manual

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ZyAIR B-500 Wireless Access Point User’s Guide 
5-2 
 
                        
 
 
        Wireless Configuration and Roaming         
 
Figure 5-2 Basic Service set 
5.1.3 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). An ESSID (ESS IDentification) uniquely identifies each ESS.  All access points 
and their associated wireless stations within the same ESS must have the same ESSID in order to 
communicate.