Multi WAN Load Balancer Issue

[krie9er]

Hello dear community,

I am currently running OPNSENSE 24.7.2 on a Proxmox server, the machine has 16 cores and 20 GB of RAM.

I have 1 LAN with a 10 Gbit uplink and 2x WAN with 2.5 Gbit for Deutsche Telekom and Deutsche Glasfaser.
Regarding the configuration, I have set up the Load Balancer according to this article:

https://docs.opnsense.org/manual/how-tos/multiwan.html

When I set the gateway group to DG and Telekom on Tier 1, I do not get the combined speed, but always either Telekom or DG, never both together. What could be the reason for this?

Kind regards

[Patrick M. Hausen]

How are you measuring?

For a single connection you will never get the combined speed. At best the system will distribute your internal clients over both connections. The more clients the better chance to actually max out all uplinks.

[krie9er]

Thank you for your feedback. I am coming from the pfSense world. I just do speedchecks/ big file downloads to validate.
In pfSense I configured a loadbalancer and in heavy load situation both connections were utilized. But in opnsense i can not get this working.

In the past I achieved ~1.2Gbit down and 600mbit upload. but with Opnsense I can get eigther 1gbit/500 mbit or 250/100. But not both combined, also not when multiple devices try to utilized the connections.

Maybe I have just a wrong configuration, because I changed in the interface group just to the same tier for both connections. But the rest of my configuration is still the same.

[Patrick M. Hausen]

I cannot imagine how a single file download over TCP would be able to utilise two WAN connections.

[krie9er]

Most servers in the internet did not give this speed.
I have seen combined speeds mostly on Steam downloads, Windows update and Speedtests.
My main challenge is, currently that although both wan connections are tier 1 the most times it'll take the slower connection and then caps the speed. Let me do some screenshots to show what I mean.

[krie9er]

So I just tested it. Both WAN Connections are on Tier 1.

I started on one computer a 100gb download to have constant load. Steam uses this on this computer around 980mbit.

When I start on another device a speedtest I get only measures up to 120mbit and the steam speed decreases it self by ~100mbit. In Opnsense dashboard ~1gbit is shown, but no utilization of the 2nd wan.

Alternativly I started 2 downloads 100gb plus on 2 devices but still only 1 wan connection is utilized.