
10-17
Cisco Wireless LAN Controller Configuration Guide
OL-13826-01
Chapter 10 Configuring Radio Resource ManagementWireless Device Access
Configuring Dynamic RRM
Avoid Cisco AP Load Causes the controller’s RRM algorithms to consider 802.11 traffic from
Cisco lightweight access points in your wireless network when
assigning channels. For example, RRM can assign better reuse patterns
to access points that carry a heavier traffic load.
Options: Enabled or Disabled
Default: Disabled
Avoid Non-802.11a
(802.11b) Noise
Causes the controller’s RRM algorithms to consider noise (non-802.11
traffic) in the channel when assigning channels to lightweight access
points. For example, RRM may have access points avoid channels with
significant interference from non-access point sources, such as
microwave ovens.
Options: Enabled or Disabled
Default: Enabled
The following non-configurable RF channel parameter settings are also shown:
• Signal Strength Contribution—This parameter is always enabled. RRM constantly monitors the
relative location of all access points within the RF group to ensure near-optimal channel reuse.
• Channel Assignment Leader—The MAC address of the RF group leader, which is responsible for
channel assignment.
• Last Auto Channel Assignment—The last time RRM evaluated the current channel assignments.
• DCA Sensitivity Level—The configured DCA sensitivity setting: low, medium, or high. This
setting determines how sensitive the DCA algorithm is to environmental changes, such as signal,
load, noise, and interference, when determining whether to change channels.
Note See the config advanced {802.11a | 802.11b} channel dca sensitivity {low | medium |
high} CLI command in the “Using the CLI to Configure Dynamic RRM” section on
page 10-22 for more information.
Note To see why the DCA algorithm changed channels, click Monitor and then View All under
Most Recent Traps. The trap provides the MAC address of the radio that changed channels,
the previous channel and the new channel, the reason why the change occurred, the energy
before and after the change, the noise before and after the change, and the interference
before and after the change.
Table 10-1 RRM Parameters (continued)
Parameter Description
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