Hi, i 'm new to the deco system. i just bought the ax1500 deco with 2 units. I would like to connect both of them via ethernet in router mode and i made this connection type: 

That switch was originally connected to main router so it can give my TV, Apple TV, and other equipment in the living room internet connection. Now, i unpluged cable from main router to switch, and connected main Deco to switch. Just like the diagram above. Both Deco units shows wired connected, fine....BUT now i don't have internet on my other equipment. 

Is that behaviour expected? is there anyway i can have that topology and have internet over the other switch ports so i can feed internet to my other equipment? Switch is a 10 year old TP-LINK TL-SG1008D if that helps.

Like this one: 

Regards.