User guide

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Cisco WLAN Controller Web Interface User Guide
OL-7416-04
Chapter 5 Wireless Menu Bar Selection
802.11a Global Parameters
Table 5-39 RF Channel Assignment
Parameter Description
Channel Assignment Method Dynamic channel assignment has three modes.
• Automatic - The channel assignment is periodically updated for
all access point that permit this operation.
• On Demand - Channel assignments are updated when the
Invoke Channel Update Now button is clicked.
• OFF - No dynamic channel assignments occur and value are set
to their global default.
Default is Automatic.
Avoid Foreign AP Interference Enabled or Disabled. Enable this Radio Resource Management
(RRM) foreign 802.11 interference-monitoring parameter to have
Radio Resource Management consider interference from foreign
(non-Cisco access point outside the RF/mobility domain) access
points when assigning channels to Cisco access points. Disable this
parameter to have Radio Resource Management ignore this
interference.
In certain circumstances with significant interference energy (dB)
and load (utilization) from Foreign APs, Radio Resource
Management may adjust the channel assignment to avoid these
channels (and sometimes adjacent channels) in access points close
to the Foreign APs to increase capacity and reduce variability for
the Cisco WLAN Solution.
Avoid Cisco AP Load Enabled or Disabled. Enable this Radio Resource Management
(RRM) bandwidth-sensing parameter to have controllers consider
the traffic bandwidth used by each access point when assigning
channels to access point. Disable this parameter to have Radio
Resource Management ignore this value.
In certain circumstances and with denser deployments, there may
not be enough channels to properly create perfect channel re-use. In
these circumstances, Radio Resource Management can assign better
re-use patterns to those access points that carry more traffic load.
Avoid non-802.11a Noise Enabled or Disabled. Enable this Radio Resource Management
(RRM) noise-monitoring parameter to have access points avoid
channels that have interference from non-Access Point sources,
such as microwave ovens or Bluetooth devices. Disable this
parameter to have Radio Resource Management ignore this
interference.
In certain circumstances with significant interference energy (dB)
from non-802.11 noise sources, Radio Resource Management may
adjust the channel assignment to avoid these channels (and
sometimes adjacent channels) in access points close to the noise
sources to increase capacity and reduce variability for the Cisco
WLAN Solution.