Hi,

Interesting, I have exactly the same question, however with the three Deco, out of wireless reach from eachother. All three Deco are connected via Ethernet on a switch in my garage. On the same switch, I have the internet box. In addition, I want the three Deco to work as Access Point instead of router mode. What I did is first bring the three Deco close to eachother to peer them, and then placed them in their finmal location in the house, each with an Ethernet connection... It worked until I tried to reboot them to see what happens. They did not recognized them anymore and all Deco began to flash red...
As a network engineer, I thought the Deco can support this setup, as it is the case with Cisco access points for instance. Let see if someone has an explanation !

When the Deco is working under "Router" mode, it is required to have the main Deco in a leading position, and the other satellite Decos all behind it, like in the below diagram:
Internet---Front end modem--- main Deco--- Deco satellite(ethernet).
----------------------------------------------------------(()) Deco satellite(wireless)