I have a G1100 and it has had 2 Ethernet connections for the last 2 years. One of those connections was my Eero pro router.
A few weeks ago I added a third Ethernet connection to the gateway - a laptop for work. Last week my Eero network dropped off as disconnected. In the Fios gateway page I tried romping g it and it kept failing. I tried and tried to reconnect the Eero and thought that the LAN adapter must have been busted. Finally I disconnected all devices and restarted the gateway. I added the eero first to port 4 and it worked fine! So I added the laptops on 1 and 2 and the eero went back to disconnected! I disconnected the laptops and it came back up. What exactly is going on and how do I fix it?