Created on
07-15-2024
12:25 AM
Edited on
01-23-2025
07:32 AM
By
Jean-Philippe_P
Description | This article provides a step-by-step guide to diagnose and optimize FortiWifi speed. |
Scope | FortiAP managed through FortiGate. |
Solution |
Step 1: Optimal Placement. Make sure that the AP placement is done as per a per-site survey to identify and address coverage gaps and interference sources.
Step 2: Optimize Wi-Fi Settings.
Interference from other Wi-Fi networks can affect speed. Use a less crowded channel. Refer to the below KB article to see the nearby interfering sources: Troubleshooting Tip: Channel utilization is reported high on FortiAP (Managed by FortiGate)
On the FortiAP profile, radio resource provisioning should be enabled on the radios.
Navigate to the FortiAP profile -> Go to each radio -> Choose the Channel width.
Encourage dual-band devices to use the 5 GHz band for better performance. The wireless controller monitors the usage of 2.4GHz and 5GHz bands and signals clients to switch to the lesser-used frequency. Navigate to FortiAP profile -> Enable Frequency handoff.
The wireless controller signals a client to switch to another access point. Navigate to FortiAP profile -> Enable AP handoff.
Caution: Enabling Frequency Handoff and AP Handoff on areas where this feature is not needed, or WiFi networks with lack or no tuning at all, might cause unexpected disconnections on the wireless clients. Proceed with caution and preferably on high density environments only. See Technical Tip: How frequency handoff works and when to configure it
Adjust transmit power to balance coverage and minimize interference. Avoid setting the power to maximum unless necessary.
Set the right Tx power on each radio as recommended in the initial site survey report.
Do not broadcast all APs at 100% power, instead set the Transmit power mode to 'Auto' and choose the power range as per the survey report. FortiGate will auto-adjust the power range based on nearby APs.
Make sure that the test client is near the FortiAP and that the signal strength is good on the FortiGate GUI.
To list the particular station station to the WIFI:
diagnose wireless-controller wlac -d sta | grep -v x.x.x.x
If the issue still exists, capture the below logs and raise a case with the TAC team:
sta fap-get-status cw_diag -c his-chutil cw_diag -c all-chutil cw_diag ksta fap-tech
FAP profile configuration screenshot get wireless-controller scan --> List all discovered neighboring APs get wireless-controller rf-analysis --> RF conditions around all APs. get wireless-controller status –-> Show client load over time.
Related document: |
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