I have a single router from Airtel. Wanted to check if I use a cable to connect TP-Link Deco to my existing Airtel router and then set it up with Deco in rooms with ethernet connection. I am not sure if Airtel router supports mesh network. Also wanted to check if I can setup with Ethernet as my other rooms have ethernet cables wired from the living room where the primary internet connection is coming in the house. I see Deco usually have two Ethernet ports so how can configure it to connect two ethernet cables from my rooms and one cable from Airtel router into the Deco router.