@Family_AM I don't have good advice anymore, maybe you can email their tech support and have them do a deep troubleshooting

@Slavco Strange phenomenon I think you can email their tech support, let them do in-depth analysis.

@Family_AM That's strange. What's your previous version of your controller ? Have you changed any network settings since the upgrade?

@ComputerWerken As far as I know, you can't manually modify the rate of the wan port, its mechanism should be auto-negotiation. You can check the network cable, make sure your cable is gigabit

@AlexVi I don't think load balance is so smart. You can consider using load balance together with policy routing, let the main fiber be your main network, and then set policy routing to let some...

@jandico Hi, I think you can use your existing network as a network source, make sure it has no IP conflicts with the ER7206, then you can connect the WAN port of the ER7206 to the front end network,...