6-1
Wireless Configuration
A Wireless Local Area Network (WLAN) is a data-communications system and wireless local area network
that flexibly extends the functionalities of a wired LAN. A WLAN links two or more computers or devices
using spread-spectrum or OFDM modulation based technology. A WLAN does not require lining up devices
for line-of-sight transmission, and are thus, desirable for wireless networking. Roaming users can be handed
off from one access point to another, like a cellular phone system. WLANs can therefore be configured
around the needs of specific user groups, even when they are not in physical proximity.
WLANs can be used to provide an abundance of services, including data communications (allowing mobile
devices to access applications), email, file and print services or even specialty applications (such as guest
access control and asset tracking).
Each WLAN configuration contains encryption, authentication and QoS policies and conditions for user
connections. Connected access point radios transmit periodic beacons for each BSS. A beacon advertises
the SSID, security requirements, supported data rates of the wireless network to enable clients to locate and
connect to the WLAN.
WLANs are mapped to radios on each access point. A WLAN can be advertised from a single access point
radio or can span multiple access points and radios. WLAN configurations can be defined to only provided
service to specific areas of a site. For example a guest access WLAN may only be mapped to a 2.4GHz radio
in a lobby or conference room providing limited coverage while a data WLAN is mapped to all 2.4GHz and
5GHz radios at the branch site providing complete coverage.
The wireless configuration is comprised the following policies:
• Wireless LAN Policy
• Configuring WLAN QoS Policies
• Radio QoS Policy
• AAA Policy
• Association ACL
• Smart RF Policy
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