https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/configure-guide/b_wi_16_10_cg/radio-resource-management.html Check the Avoid Non-802.11a (802.11b) Noise check box to cause the controller's RRM algorithms to consider noise (non-802.11 traffic) in the channel when assigning channels to lightweight access points, or uncheck it to disable this feature. For example, RRM may have access points avoid channels with significant interference from nonaccess point sources, such as microwave ovens. The default value is selected.
Check the Avoid Persistent Non-WiFi Interference check box to configure the controller to stop ignoring persistent non-Wi-Fi interference in new channel calculation. The persistent non-Wi-Fi interference is considered during the metric calculation for channels.
https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-6/config-guide/b_cg86/radio_resource_management.html