Technical Tip: Troubleshooting scheduled speed test issues on FortiGate
| Description | This article describes troubleshooting commands when a scheduled speed test does not run on FortiGate. |
| Scope | FortiGate, SD-WAN. |
| Solution | Devices with an SD-WAN Network Monitor license can run WAN speed tests on a schedule. The relevant configuration is found in 'config system speed-test-schedule', see Scheduled interface speed test.
An SD-WAN Network Monitor license is required to use the speed test feature. The license status can be verified in GUI from the either the License widget or the System -> FortiGuard page.
Run the following command to confirm the FortiGate can download the speed test server: execute speed-test-server download Example of timeout output:
FortiGate # execute speed-test-server download Download timeout.
If Download timeout is seen, verify WAN connectivity and confirm the FortiGate has internet access. This may indicate a connectivity issue between the FortiGate and the speed test server.
Example of successful output:
FortiGate # execute speed-test-server download Download completed.
To verify whether the recurring speed test ran successfully or failed, filter the event log for entries such as Log Description: 'SD-WAN Bandwidth Monitoring Result'. See the document System Events log page.
These logs help confirm whether the scheduled speed test was triggered and whether it completed successfully.
If the issue persists, check for any related process crashes:
diagnose sys crashlog read | grep YYYY-MM
If the issue occurs intermittently, collect debug output while waiting for the problem to happen, see Technical Tip: How to create a log file of a session using PuTTY. Run the following commands from an SSH client connected to the FortiGate:
diagnose debug reset diagnose debug console timestamp enable diagnose debug duration 0 diagnose debug application speedtest -1 diagnose debug enable diagnose sniffer packet any "host 1.2.3.4 and not host 1.2.3.4" 4 0 l <----- This sniffer is not to capture any packets, but to keep the SSH session open.
show full system interface port1 | grep measure set measured-upstream-bandwidth 116183 set bandwidth-measure-time 1772495002 Note: The bandwidth-measure-time '1772495002' indicates when the bandwidth measurement was recorded and is stored in epoch time format. This value can be converted to a human-readable date and time using third-party timestamp converters such as Epochconverter.
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