Reference Guide

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Understanding Smart RF and Channel Width on page 18
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Understanding Smart RF and Channel Width
Extreme Campus Controller Smart RF can ensure that the operating channel width does not conflict
with radio band compliance limitations. Your channel width selection is considered when determining
the optimum channel width, but it is not guaranteed. Extreme Campus Controller Smart RF uses data
from the Neighbor Report to determine the best channel width. If your selected channel width is
restricted by radio band compliance, Smart RF selects the next lower channel width. The minimum
width is 20 MHz.
Important
If the channel plan does not include a channel width that meets compliance restrictions, the
radio channel is disabled.
Smart RF runs the assessment for best channel while considering your desired channel width. The
highest channel width (160 MHz) is selected by default for 5 GHz and 6 GHz radios. To allow Smart RF
to determine the best possible channel width without you providing a desired width, select 160 MHz
and Smart RF will automatically reduce the width as appropriate to configure the optimum width,
provided that the AP model supports 160 MHz.
Note
Imported configurations previously set to Auto automatically convert to 160 MHz and are
reduced appropriately.
Scanning Configuration
The Scanning Configuration screen in the Smart RF Policy includes the following configuration
sections:
• Monitoring Configuration – Enables / disables O-Channel Scanning (OCS) for Neighbor Recovery
and Interference Recovery features.
• Scanning Configuration – Determines the frequency of O-Channel Scanning (OCS), deciding
which channels are scanned, and how Smart RF uses OCS when Voice or Power Save Poling wireless
clients are detected.
OCS Monitoring Awareness
Smart RF relies on O-Channel Scanning (OCS) to monitor the RF environment in real-time,
enabling the Smart RF-managed radios to adapt to changes in the RF environment in real-time.
Smart RF-managed radios that go o-channel can impact certain devices; therefore, Smart RF is
adaptive. By default it prevents OCS on a Smart RF-managed radio if it detects an active voice call
or if packets are queued for clients in Power Save (PS) dozing state.
Voice and PS awareness is set to dynamic mode by default. When in dynamic mode, a Smart RF-
managed radio can avoid going o-channel when a voice call is in progress, or packets are queued
for PS clients. You can also set Voice or PS awareness to strict mode. Strict mode prevents OCS
when a Voice or PS wireless client is associated to a Smart RF-managed radio. Additionally, to
prevent OCS, you can define a Client Aware Scanning threshold to determine the number of
associated wireless clients on a given Smart RF-managed radio.
Understanding Smart RF and Channel Width
Smart RF Policy
18 Extreme Campus Controller Smart RF Reference Guide for version 5.46.02