Sonos on Guest network
Why doesn't the Sonos (connect amp) work in the eero guest Network, even with my phone on the guest Network as well?
I have all of my IoT devices (ecobee, echo, etc.) and the family cell phones in the guest Network, keeping only the true computers in the full Network. Everything else works great, but I can't get the Sonos app to recognize the Sonos if it is in the guest Network after successfully setting it up?
This is because all the devices in your guest network are isolated from each other (this is for security measures). They can’t see other devices on the same network. Your other IoT devices work because you are connecting to them over the internet and not your local network. The Sonos works differently though where it has to be able to see the devices on the local network. If you move the Sonos to the local network (along with whatever other devices that need to see it like your phone), then it will work properly.
I know this is an old thread. I believe the reason you are not able to use Sonos speakers on the guest network is due to multicast being blocked.
I am linking this thread to a feature request to enable multicast on the guest network (which would allow Sonos speakers to work on guest networks).