PfSense behind multi WAN with QoS possible?

wederer

Hello,

please take a look at my setup in the attachement.

Our DSL line is veeery unstable. That is why we have bought a LTE router which serves as a backup.
Right now we still have to manually unplug the DSL router and plug in the LTE router which can cause quite a lot of downtime.

In addition to that we use VOIP which is not integrated into our router, but managed by another hardware. This often results in a bad voice quality as the VOIP traffic is not being prioritized.

So question 1:
Is is possible to use the dsl router as the main router and the lte router as the backup and have this setup managed by pfSense? Can port forwarding, VPN and so on be managed by the pfSense or does it have to be configured in the dsl/lte router?

Question 2:
Is QoS management possible via the pfSense? Or do the other two routers "block" this feature?

Any help is greatly appreciated!

![Untitled Diagram.png](/public/imported_attachments/1/Untitled Diagram.png)
![Untitled Diagram.png_thumb](/public/imported_attachments/1/Untitled Diagram.png_thumb)

gazoo

I'm surprised no one answered you on this..looks like something PF does already. I've never done this, but I think the place to start is gateway and gateway groups. I know there's a way to sense pings down or packet loss and have it switch to the secondary router on this. I don't think that' necessarily QoS though.

ccmks

@wederer:

Hello,

please take a look at my setup in the attachement.

Our DSL line is veeery unstable. That is why we have bought a LTE router which serves as a backup.
Right now we still have to manually unplug the DSL router and plug in the LTE router which can cause quite a lot of downtime.

In addition to that we use VOIP which is not integrated into our router, but managed by another hardware. This often results in a bad voice quality as the VOIP traffic is not being prioritized.

So question 1:
Is is possible to use the dsl router as the main router and the lte router as the backup and have this setup managed by pfSense? Can port forwarding, VPN and so on be managed by the pfSense or does it have to be configured in the dsl/lte router?

Question 2:
Is QoS management possible via the pfSense? Or do the other two routers "block" this feature?

Any help is greatly appreciated!

Answer on question 1: Yes you can do that. But my question is which one is more stable internet, the DSL or LTE? if LTE is more stable connection, you can setup route based policy to route all voice traffic to LTE then the rest of network will be going to DSL. This is a very common setup for multi-wan. I also have similar setup where I have 3 ISP, one dedicated for guest and NAS and one is used by Voip and the rest of them is for data.

Answer question 2: you don't need QoS if you can setup like I mentioned on question 1 properly. The only QoS will be needed if you are using same internet for voice and data.