Quote Originally Posted by chris128 View Post
Yeah but what I'm saying is that on that classful version it wont let me provide 255.255.254.0 with a 192.168.10.X range, where as on the CIDR version it does and it matches what they have got in place (192.168.10 and 192.168.11) but just saying it uses CIDR doesnt change the way it actually works does it?
I might be wrong, but I a do not think that you can set IP addresses based on a CIDR range. The reason the subnet mask is not available is because it is not a valid class C subnet mask.