@TechNetNube,

It will be easier than you imagine but will require a different configuration or an additional node.

Basically, you need all your switches, nodes, and client devices to fall under the "umbrella" of a single router since a router cannot manage devices upstream of itself.

In your proposed setup with fiber, your fire tv and deco node will all fight for the one IP address given by your ISP. With both Fiber and Coax active, you must be given two IPs to use from your ISP, but it would still be recommended to swap to just the fiber connection since it would be on a completely separate network technically.

Your Choices Are:

A) Move your Deco Node Between Your Fiber ONT and Your Unmanaged Switch as the Main Node (ONT > Deco > Switch)

B) Disconnect the Switch and Run a Cable from the ONT only to the Office Router, leaving your FireTV to use Wi-Fi or needing a new cable run. (ONT>Deco)

C) Add a Deco Node Between Fiber ONT and Switch (ONT > Deco > Switch > Deco)

D) Check for Additional Cable Runs in the office going back to the Switch - allows you to run a cable from your one deco in the office back to the switch, albeit inefficient since it almost creates a giant loop. (ONT > Office Deco > Back to Basement Switch > Other Runs and FireTV)