ZyXEL p-330w User Guide

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ZyXEL P-330W User’s Guide
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Chapter 5 Wireless
Figure 20   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.