@MatschHasi I use Omada only for my APs. My switches and router are not under Omada since I want to know how they are really configured. Omada adds another layer of abstraction that obstracts the...

@rpiboy Maybe the switch blocks some ports because of a network loop? Maybe there is an issue with the IP configuration?

@C.Conklin I'm using my ER7206 standalone so I can't help you to set it up in Omada. However, I'm pretty sure it can be done. There is no need to buy any new equipment just because of these...

@C.Conklin They all support IEEE 802.1Q VLAN Tagging so you should be able to make it work. In my VLAN network, I have a mix of TP-Link, Netgear and CISCO devices and I have not experienced any...

@HSJ Diagram #2 Give the “ISP Modem” an IP address from a different subnet than ER605 is in, say 192.168.1.1, and enable its DHCP server.

@cncot Can you reset your ER605 to the factory defaults and take the following screenshots when the router is connected to the Spectrum modem? Status>System Status(tab) Network>WAN>WAN(tab)...