How to setup a thread network with multiple OTBR?

[olavt]

I'm quite ok with the process of setting up a new thread network using one OpenThread Border Router running on a Raspberry Pi 4.

How do I add another OTBR to the network?

My goal is to extend the network to another part of the house where the Thread devices could route traffic via another OTBR.

[superwhd]

Basically you just need to set the second OTBR to use the same active operational dataset as the first OTBR.

On the first OTBR, copy the hex string output of ot-ctl dataset active -x.

On the second OTBR,

$ ot-ctl
> factoryreset                   # To clear the dataset if any
> dataset set active <the hex string you copied>
> ifconfig up
> thread start

Then the second OTBR should join the first OTBR's Thread network in a few seconds.

[olavt]

Great! How can I join a Raspberry Pi based OTBR to the same Thread network as Apple TV?

[abtink]

You need to get/set the credential (operational dataset) from Apple TV (or other devices)

To get or set the credential (operational dataset) from Apple TV, you'll likely need a mobile app. You can refer to the Apple APIs: https://developer.apple.com/documentation/threadnetwork

For Android devices, you can use similar APIs: https://developers.home.google.com/thread