SETTING THE COMMUNICATION DOMAIN

29

Setting the Communication Domain

Stationary Wireless PCs

The Basic Service Set (BSS) is the communication domain for
each access point. For wireless PCs that do not need to support
roaming, set the Service Set Identifier (SSID) for the wireless
card to the SSID of the access point to which you want to
connect. Check with your network administrator for the SSID.

Roaming Wireless PCs

A wireless Infrastructure can also support roaming for mobile
workers. More than one access point can be configured to create
an Extended Service Set (ESS). By placing the access points so
that a continuous coverage area is created, wireless users within
this ESS can roam freely. All wireless adapters and access points
within a specific ESS must be configured with the same SSID and
to the same radio channel.
File
Server
Switch
DesktopPC
AccessPoint
Notebookswith Wireless
PCCard Adapters
Seamless Roaming
<BSS2>
<ESS>
<BSS1>
Notebookwith Wireless
PCCard Adapter
AccessPoint
WirelessCell
CoverageArea
PCwith Wireless
PCIAdapter
PCwith Wireless
PCIAdapter