SMC Networks SMC2552W-G2-17 manual Configuring Wi-Fi Multimedia, 113

Radio Interface 6

rogue-ap scan command. To view the database of detected access points, use the show rogue-apcommand from the Exec level.

Enterprise	AP(config)#interface wireless g		7-88
Enter Wireless configuration commands, one		per line.
Enterprise	AP(if-wireless g)#rogue-ap enable		7-110

configure either syslog or trap or both to receive the rogue APs detected.

Enterprise AP(if-wireless g)#rogue-ap duration 200				7-111
Enterprise	AP(if-wireless	g)#rogue-ap	interval 120	7-112
Enterprise	AP(if-wireless	g)#rogue-ap	scan	7-112

Enterprise AP(if-wireless g)#rogueApDetect Completed (Radio G) : 5 APs detected

rogueAPDetect (Radio G): refreshing ap database now

Enterprise AP(if-wireless g)#exit
Enterprise AP#show rogue-ap				7-113
802.11g Channel : Rogue AP Status
AP Address(BSSID)	SSID	Channel(MHz) RSSI
=======================================================
00-04-e2-2a-37-23	WLAN1AP	11(2462 MHz)		17
00-04-e2-2a-37-3d	ANY	7(2442	MHz)	42
00-04-e2-2a-37-49	WLAN1AP	9(2452	MHz)	42
00-90-d1-08-9d-a7	WLAN1AP	1(2412	MHz)	12
00-30-f1-fb-31-f4	WLAN	6(2437	MHz)	16
Enterprise AP#

Configuring Wi-Fi Multimedia

Wireless networks offer an equal opportunity for all devices to transmit data from any type of application. Although this is acceptable for most applications, multimedia applications (with audio and video) are particularly sensitive to the delay and throughput variations that result from this “equal opportunity” wireless access method. For multimedia applications to run well over a wireless network, a Quality of Service (QoS) mechanism is required to prioritize traffic types and provide an “enhanced opportunity” wireless access method.

The access point implements QoS using the Wi-Fi Multimedia (WMM) standard. Using WMM, the access point is able to prioritize traffic and optimize performance when multiple applications compete for wireless network bandwidth at the same time. WMM employs techniques that are a subset of the developing IEEE 802.11e QoS standard and it enables the access point to inter operate with both WMM- enabled clients and other devices that may lack any WMM functionality.

Access Categories — WMM defines four access categories (ACs): voice, video, best effort, and background. These categories correspond to traffic priority levels and are mapped to IEEE 802.1D priority tags (see Table 6-1). The direct mapping of the four ACs to 802.1D priorities is specifically intended to facilitate inter operability with other wired network QoS policies. While the four ACs are specified for specific types of traffic, WMM allows the priority levels to be configured to match any network-wide QoS policy. WMM also specifies a protocol that access points can use to communicate the configured traffic priority levels to QoS-enabled wireless clients.

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