Reference Guide

Controller. Based on O-Channel Scanning (OCS) Sample Count in the Scanning and Configuration
screen, an average RSSI for each neighbor is determined from the overall attenuation of the
neighbors. The attenuation plus power threshold is the power setting. If a neighbor attenuation is
calculated at 80, and the threshold is set to -70, the radio power will be set to 10 (80 +(-70) =
10).
In environments that have excessive obstructions where neighboring radios may not be heard as
well, the Power Threshold may be lowered (example -65) in order to arrive at a better overall power
setting.
Dynamic Sample Recovery
The Dynamic Sampling Recovery parameter enables an administrator to define how Smart RF
adjustments are triggered by locking retry and threshold values. This parameter is disabled by
default. Select Dynamic Sample Enabled to enable this setting.
When Dynamic Sampling is enabled, the Smart RF managed radios perform extra sampling to avoid
excessive power changes. The Smart RF-managed radios keep track of the number of samples that
were processed without a power change. If a power change has not occurred in a while and the
Dynamic Sample Threshold has been exceeded, the Smart RF Managed radio can perform a power
change immediately. If a power change has occurred recently and another power changed is
required (within the Dynamic Sample Threshold), the Smart RF-managed radio sends additional
samples to see if the power change is still required. The power is changed only after confirming that
it is required. Configure the number of retries in the Dynamic Sample Retries field.
Interference Recovery
The Interference Recovery feature performs channel changes when noise from neighboring wireless
devices or outside interference is detected and the delta between the current channel energy and
the perceived energy from other signals falls below a threshold. The Channel Hold Time, Client
Threshold, and Channel Switch Delta parameters are automatically assigned the optimum values
based on the Sensitivity value selected in the Basic Configuration screen. These values can also be
modified when setting the Sensitivity value to Custom.
The following provides a detailed overview of each Interference Recovery parameter, which can be
defined for all Smart RF managed radios.
Recovery
Smart RF Policy
22 Extreme Campus Controller Smart RF Reference Guide for version 5.46.02