User manual

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Figure 2 Ad-Hoc Mode: Two or More PCs with 802.11b/g Wireless LAN Cards Configured to Same Radio
Channel and Network Name
Infrastructure Mode
When a WLAN access point is introduced into the WLAN, the access point and its clients (each PC) comprise
a Basic Service Set (BSS), whereby the access point serves as the connection to the wired LAN for each client.
Clients within the same BSS do not directly communicate between each other; rather they communicate to the
AP that routes the data to the appropriate destination.
The access point bridges both wired and wireless networks, allowing wired and wireless client communication.
This arrangement of WLAN access points and clients is commonly referred to as Infrastructure mode. An access
point also extends the range of the WLAN, double over that of client only networks because the access point
is able to forward data within its BSS.
Infrastructure mode enables the network clients to freely roam, once an ESS (Extended Service Set) is establi-
shed.
With all clients using the same radio channel and ESS ID (sometimes referred to as SSID which is a given name
to the network), users are fully mobile within the range of the access point signal. Access points should be situ-
ated in location to deliver the largest range of signals, with minimal interference. Best performance and signal
quality is often affected by building structures, walls, etc., and may require some trial-and-error to identify the
best location for access points.