Good Site to Test Bandwidth Speed

When it comes to measuring bandwidth over a Wide Area Network (WAN), it's essential to identify the best method to troubleshoot speed-related issues on an IPsec tunnel. One effective way is by comparing the bandwidth over WAN between two sites connected through an IPsec tunnel.

To begin, you'll need to set up iPerf3 on both sites. On site A, run the Iperf commands as a FortiGate can only act in client mode. Define the Fortigate port (WAN port) using `iag traffictest client-intf port1`. Next, define the server interface and port using `iag traffictest server-intf port1` and specify the iPerf3 port running on the iPerf3 server with `iag traffictest port 5209`.

On site B, configure a corresponding policy with a Virtual IP (VIP) as the destination to allow traffic from site A's FortiGate to perform the test. This requires an unused public IP space on Site B so that a VIP can be configured and opened to any server where an IPerf server can be set up in server mode.

In this scenario, `port1` represents the WAN interface on both sites, while `port2` represents the LAN interface on both sites. The maximum throughput one can achieve over IPsec depends on how quickly resources can be accessed from location A to location B over the WAN.

IPsec packets travel as ESP (Encapsulated Security Payload) packets sent over the WAN. To troubleshoot speed-related issues, it's essential to identify any bottlenecks that may be affecting bandwidth performance.

By following these steps and configuring iPerf3 correctly on both sites, you can effectively measure bandwidth speeds and troubleshoot any issues related to IPsec tunnel performance.

Good site to test bandwidth speed