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Wireless service
Wireless Local Area Networks (WLAN) have become very popular because they are very easy to setup
and use, and low cost. Generally, one or more access points (APs) can cover a building or an area.
The WLAN solution allows you to conveniently provide the following wireless access services to your
customers:
• WLAN client connectivity to conventional 802.3 LANs
• Secured WLAN access with different authentication and encryption methods
• Seamless roaming of WLAN clients in the mobility domain
Access service
Terminology
Client
A computer, a laptop with a wireless Network Interface Card (NIC), or a terminal supporting WiFi can
be a WLAN client.
Fat AP
A fat AP controls and manages all associated wireless stations and bridges frames between wired and
wireless networks.
SSID
The service set identifier. A client scans all networks at first, and then selects a specific SSID to connect to
a specific wireless network.
Wireless medium
A medium that is used for transmitting frames between wireless clients. Radio frequency is used as the
wireless medium in the WLAN system.
Wireless client access
A wireless client access process involves three steps: active/passive scanning surrounding wireless
services, authentication, and association, as shown in Figure 254.
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