Zyxel-communications Internet Security Appliance ZyWALL5UTM 4.0 Manuel d'utilisateur télécharger pdf (Page 705)

ZyWALL 5/35/70 Series User’s Guide

705 Appendix H Wireless LANs

Figure 446 Basic Service Set

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 stations within the same ESS must have the same ESSID in order to

communicate.

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Zyxel-communications Internet Security Appliance ZyWALL5UTM 4.0 Manuel d'utilisateur Page 705