Technical Tip: How to perform interface speed test

Description

This article describes how to do a speed test on the WAN interface from the GUI.

Scope

FortiGate.

Solution

The results of the test can be added to the interface's estimated bandwidth.
An SD-WAN Network Monitor license is required.

The License widget and the System -> FortiGuard page display the SD-WAN Network Monitor license status.

To run an interface speed test from the GUI:

1. Go to Network -> Interfaces.

2. Edit a WAN interface. The interfaces can be grouped by role using the grouping drop-down on the right side of the toolbar.

3. Select 'Execute speed test' in the right pane. (This button is only available with the 'super_admin' profile).

4. When the test completes, select 'Apply' results to estimated bandwidth.

5. The speed test results are used to populate the estimated bandwidth fields.

Select 'OK'.

Note:
The FortiGate has to be connected to FortiGuard and able to reach either the AWS or Google speed test servers.

To run a speed test in the CLI, the following commands can be used: 

To download the speed test servers list: 

execute speed-test-server download

To view the speed test servers list: 

execute speed-test-server list

To run a speed test:

execute speed-test <interface> <server> {Auto | TCP | UDP}

Example:

diagnose netlink interface speed-test <interface> <server> {Auto | TCP | UDP}

Example:

If the FortiGate does not have a valid SD-WAN Network Monitoring License, the following error will be generated:

FGT # execute speed-test 
Failed to get a valid SD-WAN Monitoring (SWNM) license to execute speed test.
Command fail. Return code 25

For more information, refer to the admin guide: Speed test examples.

Notes:

The following checks may be needed if the interface speed test result shows an abnormal zero-byte download speed.  

• Run the interface speed test in CLI to ensure the reverse downloading mode is running.

• Check FortiGuard and FortiCloud connectivity on the running firewall.

• Check AWS or Google speed test servers' connectivity on the running firewall.

• Check that the HTTPSD daemon is running normally when performing the interface speed test.

Related article:

Technical Tip: How to perform bandwidth tests