Network Configuration
Infrastructure Wireless LAN for Roaming Wireless PCs
The Basic Service Set (BSS) defines the communications domain for each access point and its associated wireless clients. The BSS ID is a
The BSS ID is only set by the access point, never by its clients. The clients only need to set the Service Set Identifier (SSID) that identifies the service set provided by one or more access points. The SSID can be manually configured by the clients, can be detected in an access point’s beacon, or can be obtained by querying for the identity of the nearest access point. For clients that do not need to roam, set the SSID for the wireless card to that used by 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. All wireless network cards and adapters and wireless access points within a specific ESS must be configured with the same SSID.
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| Seamless Roaming |
| Between Access Points | |
| Server |
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Desktop PC | Switch |
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Switch |
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| Access Point |
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| Notebook PC |
| Notebook PC |
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| Access Point | <BSS 2> |
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| <BSS 1> | <ESS> |
| Desktop PC |
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