I like #2. Did the UDM auto-discover your devices, or did you add them?

@RickJamesBish It is weird. Is it perhaps something to do with SNMP responding/not responding?

@Douro For this, you can create two Policy Routes, one for your special device that allows failover, the other for all your other devices that doesn't. and

@Eric2022 Create a second LAN definition under Wired Networks. Configure this with your 192.168.3.1/22 settings. You can map the VLAN3 to a different physical LAN port on the 7206 (than the one used...

@sobonefnet Fix the IP of the ER605 and make it the DMZ of your primary router. Better yet, put your primary router in bridge mode if you can, and just have one router in your solution....

@Douro I'm not using my 605 in Standalone, so I can't show exact screen, but this is what it looks like under Omada control (since this is possible under Controller, you should be able to do it in...