¶ Introduction
Legacy 802.11b data rates (1, 2, 5.5, 11 Mbps) exist because Wi-Fi is designed to be backwards compatible with all potential clients. This means that frames which need to be heard by all clients (management and control frames) are transmitted at legacy data rates resulting in higher airtime utilization and lower data throughput. 802.11b is very old Wi-Fi technology, first introduced in 1999. It is unlikely that you will have any 802.11b clients on your network, so we recommend disabling these low data rates.
¶ Related Wyebot Signature
Identifying information (MAC addresses, SSIDs) have been removed from the below screenshot.
¶ Instructions
Instructions from Fortigate 60F running firmware 7.0.3
- Navigate to WiFi & Switch Controller > FortiAP Profiles
- Select the profile you wish to edit, then click the Edit button.
- Under Radio 1 under the Band drop down - select 802.11ax/n/g. (For 802.11ac APs, you would select 802.11n/g). This means that the 2.4GHz radio will support all WiFi standards except for 802.11b, which will implicitly disable the 802.11b rates of 1, 2, 5.5, and 11Mbps.
Be cautious with the other options, as disabling support for standards other than 802.11b can cause compatibility issues or performance degradation.
- Click OK at the bottom of the page to apply your changes.
