I bought a house from someone who had setup a lot of cool stuff with Smarthome / Universal Devices.  He gave me the IP of the ISY to login to, but it didn't work.  I had lots of other stuff going on (new house and all) so I didn't worry about it since I didn't need it right away.

Fast-forward a year, and about 20% of our light switches have stopped working.  They are dimmable switches and the little status light next to the switch just shows nothing.  Also, a lot of other lights behave weirdly (like turning on a light in one area of the house turns on/off lights in other areas).  So I guess it's time to figure out the ISY.

I have an ISY-994i Pro.  It is plugged in via cable to my router from my cable provider (Spectrum).  The other ethernet cable is plugged into a Smartlabs Power Line modem #2412S which in turn has a Smartlabs access point #2443 plugged into it.  The modem is also plugged into a power outlet (which is live, I've tested it).

When I login to my router's admin console I can see that the ISY is showing up on Port 3 (or Port 4, I've tested different ones) but it doesn't get an IP address.  I'm not sure where to begin with this?  Any pointers?

TIA!

Welcome to the UDI forums!

Chances are that your ISY has a specific NAT'd local address, and your new spectrum router routes a different set (subnet) of addresses.

Did the previous owner leave you with a backup of the ISY? If so, Give this a read, and let us know if it helped

Paul

Thanks @paulbates!  You were correct and I had to adjust my router's DHCP and then it worked.  Now on to the next problem.

Great! glad to hear it!

Paul