I haven't really done home networking since Windows XP / gnome only Ubuntu days, so rusty is an understatement.
Currently due to the layout of my apartment, I have my main PC in a bedroom connected to a gli.net Velica router, such then connects to the wall, which then connects to a TP-Link Switch (1), which is connected to the internet.
In the living room, where I want to stream to a Raspberry Pi that has Android TV (lineage os), I have the Pi and 2 Nintendo Switches connected to another TP-Link switch (2), which is then connected to another gli.net router, which connects to the wall and then to TP-Link switch (1) which is connected to internet.
How do I set up a local LAN network so that my computer can then stream to the Pi via Steam Link, Moonlight, Sunshine, or any other recommended option?
Layout
Bedroom
• Wall connection (port 3)
|
∆ Velica Router 2
|
§ PC
Living Room
• Wall connection (port 1)
|
∆ Velica Router 1
|
× TP Link Switch 2
|. |. |.
π ™ Nintendo Switch 1&2
Electrical Box
• Port 1, Port 3
|
× TP Link Switch 1
|
🌐 Internet
Networking hasn't fundamentally changed in decades, so your experience is not out of date.
I'm not sure why you have two routers, but you should only have one at the edge, then a switch feeding the wall ports, so that everything in the house is on the same subnet.