Explains channel restrictions on the XOR radio in Cisco Catalyst 9166 Series APs and how dynamic switching impacts channel availability based on region and device mode.
A channel restriction on an XOR radio is a regulatory and configuration constraint that
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limits the number of usable channels on the 5GHz or 6GHz bands based on region and device mode
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dynamically adjusts channel availability and power settings according to band selection and regional compliance, and
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enables optimized performance and access to all channels in supported configurations.
Starting with Cisco Catalyst IOS XE 17.12.5 release, you can restrict channels on slot 1 of Cisco Catalyst 9166 Series APs.
The Cisco 9166 Series AP includes dynamic XOR 5GHz or 6GHz radio band switching that optimizes performance and ensuring regulatory compliance. During startup, the XOR radio defaults to the 5GHz band in regions where 6GHz is not supported. Otherwise, it defaults to 6GHz. The AP actively adjusts and communicates channel power settings. It offers all full 5GHz channels when configured for 6GHz and restricted channels when in 5GHz mode.
The XOR radio infrastructure manages channel power payload adjustments when users switch between the 5GHz and 6GHz bands. The XOR radio can function as either a single 5GHz or a dual 5GHz setup. When operating in a single 5GHz mode, the AP provides a complete list of 5GHz channels available in the selected country. In dual 5GHz mode, the system configures and communicates channel power settings. It offers full 5GHz channels in one slot and restricted channels in the other.
If 6GHz is not supported in your country, use slot 2 in either 5GHz or 6GHz. Configure the AP to Client serving mode to prevent resets.
For 6G unsupported countries, you must use slot 1 as a full band and configure slot 2 to 6GHz in Client serving mode.