Add profile support for UNII-4 5GHz band on FortiAP G-series models

This information is also available in the FortiWiFi and FortiAP 7.4 Configuration Guide: Configuring UNII-4 5GHz radio bands

FortiAP profiles support UNII-4 5GHz bands for FortiAP G-series models. FortiAP-431G and FortiAP-433G operating in Single 5G mode can make use of the UNII-4 frequency band. The 5.85 GHz-5.925 GHz channels of "169", "173", and "177" become available when configuring the 5GHz radio.

There are a few important points to note about UNII-4 band usage:

1. UNII-4 5GHz channels are not available when FAP43xG models operate in Dual 5G platform mode.
2. Not all countries allow UNII-4 band usage.
3. For APs operating in Single 5G platform mode, note the following behavior changes based on Dedicated scan:

   • When Dedicated scan is enabled, UNII-4 5 GHz channels are available by default. Radio 3 does not work in AP mode and Radio 2 can utilize all UNII-4 5GHz channels.

   • When Dedicated scan is disabled, you can choose to enable or disable UNII-4 5GHz.

By default, FortiAP-431G and FortiAP-433G support UNII-4 5GHz channels when operating in Single 5G mode with Dedicated scan enabled; there is no need to configure anything. You can immediately select channels "169", "173", and "177" when configuring the 5GHz radio.

To configure UNII-4 5GHz band channels when the FortiAP is running in Single 5G mode with Dedicated scan disabled - GUI:

1. From the FortiGate GUI, navigate to WiFi & Switch Controller > FortiAP Profiles.
2. Select if you want to create a new profile or edit an existing FAP-43xG profile.
3. Set the Platform mode to Single 5G.
4. Disable Dedicated scan.

5. Enable UNII-4 5GHz band channels.

   

6. Under Radio 2, click Set Channels and select which channels you want to use.

   In the Set Channels window, you can see new channels "169", "173", and "177" under the UNII-4 category.

   

   Note: Enabling UNII-4 5GHz band channels will cause the UNII-5 and UNII-6 Channels to be disabled on Radio 3.

   

To configure UNII-4 5GHz band channels when the FortiAP is running in Single 5G mode with Dedicated scan disabled - CLI:

1. When DDSCAN is disabled, you can configure the new set unii-4-5ghz-band command in FAP-431G or FAP-433G wtp-profiles.

   config wireless-controller wtp-profile
     edit FAP_G
       config platform
         set  431G
       end
       set unii-4-5ghz-band ?
         enable     Enable UNII-4 5Ghz band channels.
         disable    Disable UNII-4 5Ghz band channels.

2. When you select enable, the following notification shows:

   set unii-4-5ghz-band enable
     Enabling UNII-4 will reset radio-3 channel lists, UNII-5 and UNII-6 channels will be unavailable
     Do you want to continue? (y/n)

3. Enter y to continue. The UNII-4 5Ghz channels become available under radio-2.

   config  radio-2
     set channel
     *wireless_channel    <36,40,44,48,149,153,157,161,165,169,173,177>

   Note: Enabling UNII-4 5GHz band channels will cause the UNII-5 and UNII-6 Channels to be disabled on radio-3.