Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 306)

294 Brocade Mobility RFS Controller System Reference Guide
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QoS provides a data traffic prioritization scheme. QoS reduces congestion from excessive traffic. If
there is enough bandwidth for all users and applications (unlikely because excessive bandwidth
comes at a very high cost), then applying QoS has very little value. QoS provides policy enforcement
for mission-critical applications and/or users that have critical bandwidth requirements when
bandwidth is shared by different users and applications.
QoS helps ensure each WLAN receives a fair share of the overall bandwidth, either equally or as per
the proportion configured. Packets directed towards clients are classified into categories such as
Video, Voice and Data. Packets within each category are processed based on the weights defined
for each WLAN.
The Quality of Service screen displays a list of QoS policies available to WLANs. If none of the
exiting QoS policies supports an ideal QoS configuration for the intended data traffic of this WLAN,
select the Add button to create new policy. Select the radio button of an existing WLAN and select
Ok to map the QoS policy to the WLAN displayed in the banner of the screen.
Use the WLAN Quality of Service (QoS) Policy screen to add a new QoS policy or edit the attributes
of an existing policy.
NOTE
WLAN QoS configurations differ significantly from QoS policies configured for radios. WLAN QoS
configurations are designed to support the data requirements of wireless clients, including the data
types they support and their network permissions. Radio QoS policies are specific to the transmit
and receive characteristics of the connected radio’s themselves, independent from the wireless
clients the Access Point radios supported.
1. Select Configuration > Wireless > WLAN QoS Policy to display existing QoS policies available to
WLANs.