WESM zl Management and Configuration Guide WT.01.28 and greater

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Wireless Local Area Networks (WLANs)
Traffic Management (QoS)
Figure 4-53. Using WMM to Prioritize Traffic Transmitted from RPs to Wireless
Stations
Priority Queuing on Traffic Transmitted from Wireless Stations to RPs. Only
when you enable WMM on a WLAN, WMM-enabled stations also implement
priority queuing on traffic they transmit.
RPs broadcast station WMM parameters throughout the WLAN. WMM-enabled
stations queue traffic according to 802.1p or DSCP value, using the WMM parame-
ters to determine how to handle traffic in each queue. (Non-WMM stations continue
to handle all traffic normally.) Figure 4-54 illustrates the affect of WMM on wireless
station to RP traffic.