Device recommendations

Sorry if im missing something stupid, but if you have a Cat5 cable going to the shed, would you not just buy another google nest for the shed and connect that via cable? You then have the same SSID for seamless roaming and can control everything from the Nest App? I have a similar set up with a garden cabin (Deco Mesh) and thats what i do, from reading the following article it seems like its supported and all Nest models have this capability? (Ethernet Port)

https://support.google.com/googlenest/answer/7215624?hl=en

From the house end, i presume that shed cable terminates back to where your internet router is and your main Google Nest is hard-wired into your router, so you would just need to plug in the ethernet port to your ISP Router,

Or if you dont have sufficient ports on your ISP router, then buy a mini 5 GB port switch, and plug in your nests and ISP router into it so they are all on the same LAN.

He says this…

"Current Set Up: I have a Google Nest WiFi mesh set up in my house. I have run a Cat 5 cable from the house to a shed, distance of approx 40m"

Oh right okay, so because you already have the Cat 5 to the shed you don’t want to use powerline all the way to the shed, you would use them in this way if you didn’t have Cat 5 running to the shed. So you only need an ordinary powerline kit, not one with an access point built in.

Google Nest Main Unit (Router) > Powerline adapter

Then the cat 5 to the shed, connect that to the other powerline inside of the house, I presume you’ll want it plugged in somewhere near the back door as to not have a wire showing too much inside the house.

You will still then need an access point inside of the shed to connect the other end of the Cat 5 to. A router put it in “Access Point Mode” is probably the easiest - https://amzn.eu/d/cLgusq5

You could just just connect that powerline to a socket inside the shed and not use the Cat 5 at all but it mightn’t have a great connection and when you have the Cat 5 it would be a shame not to use it.

Good to hear. Just to add that having the ISP router still connected with just the WiFi off would have double NAT, it’s not a big issue as long as you don’t need port forwarding but it is very straightforward to remove the ISP router all together.

Connect the Google router to NBI ONT. PPPoE username and passwords for all the ISPs are all over Boards and you just need VLAN ID 10. If you are with eir then you don’t need PPPoE, just select IPoE/DHCP.

Yeah you would remove the ISP router altogether