I am running a domain with a windows 2003 server as my PDC. It is also the DHCP server. I have a superscope built with 2 scopes of IPs- 192.168.1.0 and 192.168.2.0. I am trying to add a third, 192.168.20.0, but whenever I add it, the computers that are pulling the address in that scope are cut off from the rest of the network. They are unable to ping anything. I double checked the router setting, dns setting..etc same as the other two scopes. There is no reason why it shouldn't work. The only thing I'm doing different is that on this scope I'm reserving IPs by using MAC addresses from computers because I want the computers in this scope to eventually be routed differently. Some assistance would be greatly appreciated. Thank you.