Configuring A Wlan's Qos Rate Limit Settings - Motorola AP-6511 Reference Manual
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6.2.2 Configuring a WLAN's QoS Rate Limit Settings
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).
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) will be dropped resulting in intermittent outages and
performance problems.
To configure a QoS rate limit configuration for a WLAN:
1. Select
Configuration
WLANs.
2. Either select the
and select
Edit
3. Select the
WLAN Rate Limit
>
Wireless
>
WLAN QoS Policy
Add
button to define a new WLAN QoS policy, or select an existing WLAN QoS policy
to modify its existing configuration.
tab.
Figure 6-19 WLAN QoS Policy - WLAN Rate Limit screen
to display existing QoS policies available to
Wireless Configuration
6-41
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