How do I put smart devices such as Nest, Smart Lights etc on a different network?

[Ricochet J]

The advice I keep hearing is that smart devices such as Nest, Smart Lights, Alexa/Google hub etc need to be on a separate network.

I have a bog standard BT Router with one WiFi SSID. How do I put my smart devices on a separate network? Do they mean having 2 WiFi SSID's?

Also if Chromecast is on SSID1, and my phone is connected to SSID2, how will I be able to cast to Chromecast - don't they need to be connected to the same network SSIDs?

 

[Ricochet J]

Thanks for responding - what you described sounds like a real PITA!

Is it worth it?