Hi,
I have on my TV SmartThings and the hub is active.
When I have my Matter bulb on the same WiFi network, I can easily add it to SmartThings, and see it there.
For some reasons that are personal, I would like to have the TV on WiFi SSID1, and move the bulb to WiFi SSID2, and still be able to control the bulb through smart things. All through the cloud. How can I do this?
Everything (phone, HV, bulb is very close one to the other).
Unfortunately, under the rules of the matter protocol, it can’t be done. The matter controller, in this case, the hub in the SmartThings TV, has to be on the same Wi-Fi network as the device. that’s part of what “operating locally“ means in this context. If they are on two different networks, they are no longer communicating locally under this meaning.
Does that rule still apply if both WiFi SSIDs are on the same lan?
One reason people have two ssids is that one is for guest use, however guest usage ssids when classed as such typically have client isolation which prevents different devices seeing each other. I have a separate 3 node mesh WiFi system distinct from my isp router and my devices on it show as Ethernet lan devices on my isp hub. My st hub is also connected via Ethernet, so is the communication between WiFi bulbs and my hub actually dependent on which ssid they are on. I’ve no idea, so it’s me trying to educate myself.
It depends on how your router handles the SSDIs. There are different options available.
Here’s a good description:
Common misconception is that your 5ghz and 2.4ghz are two different networks. 99.9% of home networks have one router and it is acting as your private networks dhcp server, access control , routing and all on the same subnet and and dhcp pool. So your 5ghz and 2.4 ghz are just two different radios not networks. And 99% of them default to them having the same network rights. Unless you have them configured to two different/independent iPad scopes and restrict/allow communication to each other then they are treated as the same network just as hardwired Ethernet connections are treated the same.
So you’re right, I should have asked more questions before posting my previous answer. If they aren’t really two different networks, it will be fine. But the original poster said that they wanted to communicate “through the cloud“ and that by definition means they aren’t local, which, under the matter protocol isn’t allowed.
But if the specific router being used hasn’t really set up two different networks, just two different radios, it will work. But it won’t be using the cloud.
Just to clarify my 2 networks are totally separate (separate routers), so the only way to meet is through the cloud, which I understand from your answer, is not possible with Matter.