@David-TP Yes it is PPPoE. And yes the Deco light goes red (solid) when the internet drops. I have run a ping test from my WiFi connected laptop: ping 8.8.8.8 -f -l 1452 and found the maximum size...

I was having internet drops that I believe were a problem on the WAN between my ISP provided router and my ISP's modem. Rebooting the ISP's modem always restored internet. The ISP replaced the modem,...