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ZyXEL G-560 User’s Guide
Wireless LAN and IEEE 802.11 C-3
The Extended Service Set (ESS) shown in the next figure consists of a series of overlapping BSSs (each
containing an Access Point) connected together by means of a Distribution System (DS). Although the DS
could be any type of network, it is almost invariably an Ethernet LAN. Mobile nodes can roam between
access points and seamless campus-wide coverage is possible.
Diagram C-2 ESS Provides Campus-Wide Coverage