9-20
Cisco Wireless LAN Controller Configuration Guide
OL-8335-02
Chapter 9 Configuring Radio Resource Management
Configuring Dynamic RRM
The following non-configurable transmit power level parameter settings are also shown:
•Power Threshold and Power Neighbor Count—These parameters are used to fine tune the power
control. The objective is to limit power so that at most the neighbor count access points receive the
signal of each access point above a power threshold.
•Power Update Contribution—The factors used for changing power assignment levels: load (L),
signal (S), noise (N), or interference (I).
•Power Assignment Leader—The MAC address of the RF group leader, which is responsible for
power level assignment.
•Last Power Level Assignment—The last time RRM evaluated the current transmit power level
assignments.
Profile Thresholds—Lightweight access points send an SNMP trap (or an alert) to the controller when
the values set for these threshold parameters are exceeded. The controller’s RRM software uses this
information to evaluate the integrity of the entire network and makes adjustments accordingly.
Interference (0 to 100%) The percentage of interference (802.11 traffic from sources outside of
your wireless network) on a single access point.
Default: 10%
Clients (1 to 75) The number of clients on a single access point.
Default: 12
Noise (–127 to 0 dBm) The level of noise (non-802.11 traffic) on a single access point.
Default: –70 dBm
Coverage (3 to 50 dB) The signal-to-noise ratio (SNR) per access point. This value is also
used for reporting detected coverage holes.
Default: 12 dB (802.11b/g) or 16 dB (802.11a)
Utilization (0 to 100%) The percentage of RF bandwidth being used by a single access point.
Default: 80%
Coverage Exception
Level (0 to 100%)
The percentage of clients on an access point that are experiencing a low
signal level but cannot roam to another access point. This value is based
on the Coverage threshold and the Client Min Exception Level
threshold.
Default: 25%
Data Rate (1 to 1000
Kbps)
The rate at which a single access point transmits or receives data
packets.
Default: 1000 Kbps
Table 9-1 RRM Parameters (continued)
Parameter Description