Hi there,
I just bought the C8-Pro and have been unable to pair it. I've used the Go Hubitat URL included in the setup docs and the Find My Hub search tools. I also checked my ARP tables and couldn't find my device connected via Ethernet. When attempting to set up WiFi, the unit does not show the Hubitat Wi-Fi network to complete the setup. The status light is green, but it doesn't seem to be responsive. I've also tried a network reset, but I didn't notice any change in behavior.
Original Power Supply? Have you hit the Network Reset Button on the bottom? Only hole different shape than the others. Hold it for about 7 seconds.
Yes, using the original power supply, and have done a network reset with the circular button on the bottom of the unit. The unit is lighting up as green, but no network or setup wifi network.
When mine was new. after I connected it up, checked the port status lights, then checked the router for its IP address, I was able to connect right up to it with a browser. Since the hub is not endowed with ethernet port lights, you should check the connection on the other end of the ethernet cable to determine if the connect light is on and flashing. If it is, check the forwarding table in the switch/router for the hubs mac address and the router for the IP address of that mac address. Is the address within the IP mask of your PC? Other issues could be port settings mismatch. Since it is new, check that the switch/router port is set for auto.
The hub's Wi-Fi portal will not appear if the Ethernet port has a valid connection. The hub's light will not turn green unless the hub has a valid connection (either Wi-Fi or wired).
So I am going with the theory that your hub has obtained an andress, but you are unable to connect to it.
Can you describe your home network.
Do you have more than one router (ISP and personal)?
Do you have multiple subnets?
Do you have VLAN's?
Are you trying to connect via a guest Wi-Fi network?
For now I suggest connecting a PC, via Ethernet, to the same device the hub is connected to (switch ports or router LAN ports)
Download and run "Angry IP Scanner" to locate the hub.
I checked the switch's ARP tables and did not see an IP address. I may have to use more comprehensive strategies to determine the IP address. I do have multiple routers and switches with subnets but confirmed that they are on the same subnet. I do have VLANs on the network but I am on the same VLAN as well. I don't use a Guest or IoT wifi network. I will try connecting it to the same logical switch and see if I get an IP dealt out.
Regardless, even without connecting an ethernet cable the wifi setup does not appear either.
Yes you have a complex network and it would be easy to overlook some security setting.
Once the Ethernet port has been assigned an address, if the cable is disconnected, the LED will flash red/green, but the Wi-Fi portal will not automatically appear, if that is what you are expecting to see.
The Wi-Fi portal will not become active until you press and hold the hidden network reset button for 7 seconds or more, without an ethernet cable being connected.
You should probably try and do this to confirm your hub is functioning properly. If you can connect over the portal, then you can configure whatever static IP you would like.
As I said before, the lack of the WiFi portal, and the presence of the green LED, seems to indicate your hub has an address, but if you can connect via Wi-Fi, you can confirm this.
Hello,
Just for the process of elimination, anyway you can isolate you network for a few minutes...
Do you have a small 6-8 port switch (you get the idea) that you could connect just the C8-Pro and your PC / Laptop to? Set them both to DHCP class C 255.255.255.0 network and see if you can get to it that way. If so, hard code a known free IP on the C8-Pro and put it back on the network and see. Then check the logs to see what type of conflicts you may be be getting.
Just a 1/2 hour exercise to eliminate a lot quickly.
Thanks for that! I just pulled an extra RB3011 that I had lying around, completely isolated myself from the network, and was able to get an IP address on it. I'll have to explore further why it is not working on the main network.
However, now that I have an external IP, I am still not able to reach the C8-Pro on the go.hubitat.com URL, but I can reach it via it's IP address.
That's great! Now you have eliminated the hub (not that you may have been thinking that) and other things and can begin looking at other things on the network.
Looks like I had a corrupted database too, working on that and will see if I can get it fully up and running. 
Soft reset done and I am in! Thanks everyone!
I interpret this as you couldn't find the hub using http://go.Hubitat.com until you did a soft reset. But you could reach it by it's IP.
Was this while you were still connected to the RB3011, or were you able to connect via IP on your regular network?
If you were on your regular network, what do you think changed that allowed you to see it. Do you think it had obtained an address all along, but your device discovery tools failed to locate it? Did you give it a static IP while connected to the RB3011, making it easier to find once back on your regular network?
I'm just hoping to learn more about what happened in order to help others in the future.
Absolutely, Rick. Once I got it set up on the RB3011 and grabbed the IP directly from there, I was able to start the setup process. Having only two IPs to deal with allowed me to find the device much more quickly. I saw a corrupted database error that required a soft reset. When I did that, rebooted it, and plugged it back into my main network, it popped up on the advanced search. It's possible my tools failed to find it; I realized after way too much troubleshooting that nmap would have found it with ease. I am still using DHCP with a DHCP reservation on the main router/switch now that I have set up and identified it.
Thanks for the explanation. It would seem that the hub was capable of accepting a DHCP assignment, but did not respond to the discovery using http://go.Hubitat.com until after the software reset. Perhaps the mDNS services were not running originally.
BTW, I was not familiar with Zenmap, but it looks quite interesting.
Thanks.
Only one device should be the gateway (router) for a subnet or you will have all sorts of weirdness on your LAN.
not neccessarily depends as long as they are on separate subnets and one gatway is above the other it is fine.
i have 2 gateways as i have a public ip block and a router connected to that and then lower in the chain one wifi router that maps one of the public ips to my private block.. so in essence two gateways depending if you are on the private or public block
Download the Hubitat app
