In this article, you will find tips to improve the data transfer speed over a VPN connection, as well as the speed of HTTP EasyControl, VNC EasyControl, RDP StationAccess, SSH StationAccess, and RTSP LiveView. Please note that if there is no significant improvement, it is recommended to restore the previous settings.

• Tip 1: Choose a different VPN server
• Tip 2: Change the VPN connection to UDP or TCP
• Tip 3: Change the HTTP EasyControl protocol
• Tip 4: Improve the signal quality
• Tip 5: Upgrade your software

Tip 1: Choose a different VPN server

• Applies to: VPN, HTTP EasyControl, VNC EasyControl, RDP StationAccess, SSH StationAccess, and RTSP LiveView

Changing to a different VPN server may improve the connection between your computer and the edge gateway.

By default, the edge gateway connects to the closest IXON VPN server. However, this location may not always provide the best connection between your computer and the edge gateway. For example, if you are in The Netherlands and the edge gateway is in India, the geographically closest VPN server to the edge gateway is in Singapore. This means the connection from your computer to the edge gateway travels from The Netherlands > Singapore > India. So the network traffic is basically taking a detour via Singapore. A directer route would be from The Netherlands > Vienna > India. This directer route means a shorter distance to travel and thus generally a faster connection.

1. Check which VPN server the edge gateway is currently connected to.
   • This information is available in the Cloud connection status component. For example, VPN server AM12 indicates the location Amsterdam.
   • An overview of our VPN server locations can be found on status.ixon.cloud.
2. Using the world map on status.ixon.cloud, find a server location that is geographically located between your computer and the edge gateway.
3. Change the location in the edge gateway settings to the new location.

4. To effectively make the edge gateway use the new location, make the edge gateway reconnect:

Tip 2: Change the VPN connection to UDP or TCP

• Applies to: VPN, HTTP EasyControl, VNC EasyControl, RDP StationAccess, SSH StationAccess, and RTSP LiveView

Changing the connection type from the default TCP to UDP can positively improve the connection performance to your machine (PLC, HMI, etc).

In unstable or slow connections a phenomenon may occur that is called a TCP meltdown, which effectively causes delays and problems with the transfer of data. To prevent this from happening, the connection type needs to be changed to UDP in both the edge gateway and VPN Client settings.

See the article Change the VPN connection to UDP or TCP for more information and instructions.

Tip 3: Change the HTTP EasyControl protocol

• Applies to: HTTP EasyControl

If the web server of your machine supports both HTTPS and HTTP, try setting the HTTP EasyControl settings to HTTP. This may positively impact the performance.

Tip 4: Improve the signal quality

• Applies to: VPN, HTTP EasyControl, VNC EasyControl, RDP StationAccess, SSH StationAccess, and RTSP LiveView

The most impactful external factors are both your own internet connection and the on-site internet connection. These may not always be within your control. However, if the edge gateway is connected to cellular or Wi-Fi, follow the tips below to improve the signal strength and stability.

Tip 5: Upgrade your software

• Applies to: VPN

There is a known issue with slowness when using Rockwell Studio 5000. Upgrade your Rockwell Studio 5000 to version 34 or higher. For more information, see the article Slow connection in Rockwell Studio 5000 to Allen-Bradley devices.