Currently, I see the problem, that Speedfusion-tunnels on one of the WAN-interfaces are failing, but:
IC2 shows, that the tunnels are fine (as backup-WANs are in place)
Is there any possibility to monitor, if “Sub-Tunnels” are failing or that the router switches over to “higher-priority-WANs”, if WAN-alive-checks do not fail?
Please ensure your device is running latest firmware version. If the device is running the latest firmware version, it should be caused by the UDP 4500 is dropped between WAN1 and the remote peer. Then why WAN1 is showing connected on the Dashboard? This is due to the health check for WAN1 is using ICMP, UDP 53, or HTTP, not UDP 4500.
Please find the screenshot below. You may drill down further to confirm where the UDP 4500 is dropped (between local WAN1 and remote WAN of the SpeedFusion peer).
I am aware of the technical background, but monitoring is a problem. If a provider starts blocking 4500 UDP, i do not recogtnize it, until the other WAN connections drop.