Hello! Apologies for writing in English, my Dutch not good at all! 😅
Since I moved to a new apartment I've been experiencing random connection drops to the ConnectBox TG2492LG. It's not only that I lose connection to the internet, I can't even ping the Connectbox IP (192.168.178.1) from any device in my network. Attached is my setup, it is a basic network with some extra switches to interconnect stuff across different rooms in the house. Wifi is provided by the Asus (better range) and DHCP is provide by pihole (privacy).
Everything works very neatly, until randomly the network goes down as the Connectbox cannot be pinged anymore. I reached several times to support but the answer is always the same "your line is up and fine".
Another thing I forgot to mention, because at some point I thought it could be some kind of network flood from one my devices, but when the router is in that state, I can still connect to the wifi of the Asus router and reach any of the local devices (pi hole, desktop computer, etc).
Eventually and after two or three power cycles of the ConnectBox, the problem "resolves" itself, but I usually are without internet for a couple of hours when this happens, which not ideal when working from home 😞
I would agree with this statement, if it wasn't for the fact that if the router is in that state, and I connect a cable directly from a computer to the router with a static IP, I still can't ping the 192.168.178.1 nor access the web configuration page.
I am attaching the events and values of the config page of the router.