Dual and single 5G for tri-radio models

The Platform mode field on the FortiOS FortiAP Profiles page allows users to select either Dual 5G or Single 5G for tri-radio models (FortiAP U431F and U433F). The dual and single modes provide greater flexibility for 5 GHz, 2.4 GHz, and dedicated monitoring. There is a 160 MHz bandwidth option in the Channel width field to support 802.11ax. For 5 GHz radios, 160 MHz channel bonding is supported for 802.11ac and 802.11ax.

Platform mode	Radio allocation
Dual 5G	Two radios at 5 GHz One radio at 2.4 GHz or set to dedicated monitor mode
Single 5G	One radio at 5 GHz One radio at 2.4 GHz One radio set to dedicated monitor mode

To configure the platform mode in FortiOS:

1. Go to WiFi & Switch Controller > FortiAP Profiles and click Create New.
2. In the Platform field, select a tri-radio model.
3. For Platform mode, click either Dual 5G or Single 5G.
4. Configure the remaining settings for each radio as needed.

   Configuration for Dual 5G (radio 1 supports the lower 5 GHz channels and radio 2 supports the higher 5 GHz channels):

   

   Configuration for Single 5G (radio 3 is already set to Dedicated Monitor mode):

   

   

5. Click OK.