Dear @Dust95 ,

Dust95 wrote

I got the ER605 to use in a home office for the built in firewall and VPN capabilities.  Currently I've got three Deco M5's all hardwired.  Only one port is configured WAN.   The remaining ports are LAN.  When I connect the Deco's to the ER605 one connects and I can see the IP address it obtained when logged into the Er605.   That is the main deco.   The other two setup as access points won't obtain IP addresses from the ER605 and remain connected by Wi-Fi even though they are far enough away from the main deco that the Wi-Fi signal is very weak.  The link lights on the ER605 lan ports are lit up where the two deco access points are hardwired to the ER605.  I've tested the Ethernet wire by connecting other devices to it and they will connect so the wire is good.  My question is how do I get the deco's to see each other across the lan ports of the ER605 so the access points will connect to the main deco by Ethernet not Wi-Fi?

It is suggestion that you can use three Deco as main Deco seperately, and create three wifi networks for them, and all of them are used in Access Point mode.

Here is an article may help you: How to add a new Deco network through Deco app?

Best Regards!