3com 3CRWE850075A User Manual

10

The infrastructure configuration not only extends the accessibility of wireless PCs to 
the wired LAN, but also increases the effective wireless transmission range for 
wireless PCs by passing their signal through one or more access points.

A wireless infrastructure can be used for access to a central database, or for connection 
between mobile workers, as shown in the following figure.

The Basic Service Set (BSS) is the communications domain for each access point. For 
wireless PCs that do not need to support roaming, set the domain identifier (SSID) for 
the wireless card to the SSID of the access point to which you want to connect. 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.

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