Ok I've read everything I can find (learning networking, Cisco website, here, The Cliff notes here, etc) but I am still having problem (but some headway) with getting this one Dahua IPC-HDW4231em-as to connect to lorex nvr (3 of 4 connected). I've reset, I've initialized with toolbox config tool, I can see it in web browser with 192.168.0.108 (reset from 192.168.1.108) subnet 255.255.255.0. I then connect it to nvr and it can't find it even tried manual add. I plug it back into laptop via ethernet and see it has changed ip address to 10.x.xx something. I dn't understand these addresses. I then put the 10.x.x.x something into browser with it connected via laptop and get nothing. Any help appreciated greatly.