Motorola WiNG 5.6, Reference Manual

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6 - 54 WiNG 5.6 Access Point System Reference Guide
11. Select OK when completed to update this WLAN’s QoS settings. Select Reset to revert the screen back to its last saved
configuration.
6.2.2 Configuring a WLAN’s QoS Rate Limit Settings
WLAN QoS Policy
Excessive traffic can cause performance issues or bring down the network entirely. Excessive traffic can be caused by numerous
sources including network loops, faulty devices or malicious software such as a worm or virus that has infected on one or more
devices at the branch. Rate limiting limits the maximum rate sent to or received from the wireless network (and WLAN) per
wireless client. It prevents any single user from overwhelming the wireless network. It can also provide differential service for
service providers. The uplink and downlink rate limits are usually configured on a RADIUS server using vendor specific
attributes. An administrator can set separate QoS rate limit configurations for data transmitted from the access point
(upstream) and data transmitted from a WLAN’s wireless clients back to their associated access point radios (downstream).
AP6511 and AP6521 model access points do not support rate limiting on an individual client basis.
Before defining rate limit thresholds for WLAN upstream and downstream traffic, Motorola Solutions recommends you define
the normal number of ARP, broadcast, multicast and unknown unicast packets that typically transmit and receive from each
supported WMM access category. If thresholds are defined too low, normal network traffic (required by end-user devices) is
dropped, resulting in intermittent outages and performance problems.
To configure a QoS rate limit configuration for a WLAN and connected clients:
1. Select the Configuration tab from the Web UI.
2. Select Wireless.
3. Select Wireless LAN QoS Policy to display a high level display of existing WLANs QoS policies.
4. Either select the Add button to define a new WLAN QoS policy, or select an existing WLAN QoS policy and Edit to modify
its configuration.
5. Select the Rate Limit tab.