Help with OPNsense failover

[RavenLunatic]

I am having an issue with OPNsense failover.

I currently have two internet connections connected to a gateway group. Tier 1 Being Zen Openreach FTTP and Tier 2 Being Virgin Media DOCSIS. Trigger is high latency and packet loss.

My issue is when the Virgin Media connection goes down OPNsense resets both WAN’s resulting in a blackout for around a minute, even if the Zen connection is fine.

Is there anything I can do to prevent this from happening?

 

[Steveocee]

I am having an issue with OPNsense failover.

I currently have two internet connections connected to a gateway group. Tier 1 Being Zen Openreach FTTP and Tier 2 Being Virgin Media DOCSIS. Trigger is high latency and packet loss.

My issue is when the Virgin Media connection goes down OPNsense resets both WAN’s resulting in a blackout for around a minute, even if the Zen connection is fine.

Is there anything I can do to prevent this from happening?

This sounds like a "killstates" setting.
Have a look in Gateway Config.

 

[RavenLunatic]

This sounds like a "killstates" setting.
Have a look in Gateway Config.

Thank you!

I found an option to "Disable Gateway Monitoring" on the Virgin Media WAN_GW which I think solves my problem of OPNsense resetting when Virgin Media has a wobbly .

Copilot also confirms this setting

What happens when you enable “Disable Gateway Monitoring Action”
When you tick Disable Gateway Monitoring Action on a WAN gateway:
• dpinger still monitors latency/loss
• the gateway still shows as UP/DOWN
• gateway groups still fail over normally

• BUT OPNsense does NOT:
• kill states
• reset interfaces
• restart routing
• bounce WANs
• trigger global network events

In other words:
✔ Failover still works
✔ Virgin can die without taking Zen down
✔ No more 60‑second blackout
✔ No more global state resets
This is exactly what you want in a dual‑WAN setup where one ISP (Virgin) is noisy and prone to link flaps.