Wlan Qos Deployment Considerations - Motorola WiNG 5.6 Reference Manual

Automatically Detect
Multicast Streams
Manually Configure
Multicast Addresses
8. Select OK when completed to update this WLAN's Multimedia Optimizations settings. Select
back to its last saved configuration.

6.2.3.1 WLAN QoS Deployment Considerations

WLAN QoS Policy
Before defining a QoS configuration on a WLAN, refer to the following deployment guidelines to ensure the configuration is
optimally effective:
• WLAN QoS configurations differ significantly from QoS policies configured for associated access point 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 these access point radios support.
• Enabling WMM support on a WLAN only advertises WMM capability to wireless clients. The wireless clients must be also
able to support WMM and use the parameters correctly while accessing the wireless network to truly benefit.
• Rate limiting is disabled by default on WLANs. To enable rate limiting, a threshold must be defined for WLAN.
• Before enabling rate limiting on a WLAN, a baseline for each traffic type should be performed. Once a baseline has been
determined, a minimum 10% margin should be added to allow for traffic bursts.
• The bandwidth required for real-time applications such as voice and video are very fairly easy to calculate as the bandwidth
requirements are consistent and can be realistically trended over time. Applications such as Web, database and E-mail are
harder to estimate, since bandwidth usage varies depending on how the applications are utilized.
Select this option to convert multicast packets to unicast to provide better overall airtime
utilization and performance. The administrator can either have the system automatically
detect multicast streams and convert all detected multicast streams to unicast, or specify
which multicast streams are converted to unicast. When the stream is converted and
queued for transmission, there are a number of classification mechanisms that can be
applied to the stream and the administrator can select what type of classification they
want.
Select this option and specify a list of multicast addresses and classifications. Packets are
accelerated when the destination addresses matches.
Wireless Configuration 6 - 61
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