Ok, I live in Toronto, Canada, and I signed up for Bell's FibeTV service (includes phone & Internet ofc).
They had their wireless router sit in my living room which is connected to their Modem in the basement via ethernet cable.
But these Bell routers don't really have a good signal strength, so I decided to buy a router. I ended up purchasing a D-Link DIR-815 DUAL N600.
I followed the steps here: http://www.labnol.org/software/add-router-to-wireless-network/
I have an ethernet cable going from the modem in the basement, to the internet port of the BELL router (now in the basement also). Then from the LAN port of BELL router, the ethernet cable goes up to my living room and into a free LAN port in my D-Link router. Then, from another free LAN port on D-Link to the Bell TV Box Ethernet port.
Internet browsing is just fine; however, the TV now says "Television signal has been lost."
If I change channel, the picture appears but after a few seconds I get the message again.
Is my D-Link router not fast enough? i.e. do I need a gigabit router, maybe?
UPDATE If I take the ethernet cable out of the D-Link (the one coming from Bell Router downstairs) and plug directly into Bell TV box, I get uninterrupted TV. The D-Link router is definitely the choking point it seems. Question is... is it configuration or hardware?