I'm working on a new setup for a house remodel. All the houses have zooz light switches and relays. I intentionally started with one C-8 Pro hub, but added a second to reduce device distance to the hubs. To test the system initially I included a zooz 72, , switch controlling my stair lights, then I included another zooz 72, , which is just a scene controller at the top of my stairs, they are not hooked as physical 3way switches. I did basic rules, The scene controller when switched on turns on the light control switch and when switched off turns off the light control switch. All worked as fine programed, 10 minutes later the rules stopped working. I could go in an hit configure on the device and it would work again for another 10 minutes and stop. I thought it was a device issue, so I excluded it, reset it and then re included it, but the same issue.
I then added a second C-8 Pro hub, for z-wave devices at another part of the house. I added the same type switches and a zooz dry contractor. Did the same basic program with the switches and had the same results. worked fine for about 10 minutes and then nothing, until I used the app to reactivate it. I find that the switches seem to disconnect to the from the hub, I tried again this morning, hit the switch and it didn't work nor did it record in the log for today.
Are you sure you needed the second hub? You can go a long way from the hub with enough repeaters. That is the beauty of the mesh networks, they will jump a command through other devices all the way back to the hub.
It sounds like you have mains powered devices mostly, so those should all be acting as repeaters down the line. Unless you have a dead spot in the middle that has no devices to repeat. Adding some mains devices in the middle, like ZWave outlet plugs, could extend your Zwave range so you do not need a second hub.
However, you now have two hubs. Are you using hub mesh, and is hub mesh enabled on the devices? Or do they disconnect from the second hub period, meshed or not?
It sounds more like some issue with the 2nd hub pairing Zwave, but hard to say with the info provided here.
I added the second Hub because once I get all the devices added I'll have close to 300 z-wave devices, so I wanted to split them between the hub. Yes, I am setting the devices to mesh, at the moment I haven't gotten the 2 hubs to see each other, but I'll worry about that later, for now I want to keep the devices on each hub talking. For now the hubs are acting independent. I can take one off line and still get the same issues with the connection.
There is an issue with the hub communication. I turned off Jumbo Frames on the Ubiquiti switch, no change. I removed the ubiquiti switch and hooked up both Hubitat Hubs to an old basic 5 port hub and it is having the same issue keeps dropping. I've followed the trouble shooting without success. The one hub hung on a bit longer than usual, but still dropped off.
I stripped the Network down to bare-bones. I installed a 10/100 5-port Fast Ethernet hub, with 2-C8 hubs on it. No other network device, no WIFI, and no router. The Hub connected for 10 minute and stopped controlling devices. I can see it and access it and if I refresh, it access the devices again, but only for about 10 minutes. The Problem is either with the C8 Hubs themselves or a traffic issues. I need some technical support on this one, at a loss.
I have the unit completely disconnected now, as I was trying to rule out all possible interference. I need to physically plug it back in to the router to pull the info. I post that as soon as I get back to the house.
Refresh was probably the wrong term. If I hard boot or soft boot, it will reconnect to the devices for about 10 minutes. Also if I hit "config" in the device on the hub it will allow all the programing to work again for 10 minutes or so. It's almost like it goes to sleep and needs to be woken back up.
Pulling the power was a concern, but when I could not get the unit to respond it was the only choice I had. I agree about the concerns with the database. At the moment I have just a small handful of switches attached until I can assure that the network is stable to add more. If the database is corrupted then I can easily rebuild at this point. I have 12 zooz switches, and 3 sets of rules.
Look up how to do a “Soft Reset” and “Database Restore”. That doesn’t require you to re-pair any devices, rewrite automations or anything like that.
Edit - managed to haul myself out of bed. Here's the link in the documentation on how to do a Soft Reset and Database Restore.
The log for Hub 1 show no activity today, although I physically turned the switch on and off and it did not record in the log.
The log for Hub 2 I ran the rule from the application and it then activated all of the switches and it logs that I turned on the physical switch and the rules all ran fine.
The hubs always see the switches and control the switched and run the rules, but the switches lose connection to the hubs after about 10 minutes or so. They all loose connection at the same time per hub and can't run rules any more. If I run a rule from the app for one switch then all the switches on that hub work again and connect for 10 minutes then drop back off all together. I think that has to be in the hubs.
