We are migrating from a single flat class B subnet scope to multiple class C scopes on a VLAN'd network. We have our new Cisco class C network running in parallel with our class B network with Dell switches. At this point it is time to connect the clients to the new switches in the IDF's closets. Each IDF is setup as a seperate VLAN and scope. I have created a superscope in dhcp containing both the old and new scopes. If the switches are set to issue DCHP it works correctly. Disabling the dhcp on the switches and using Server 2003 to issue out the addresses is where the problem is occurring. If I setup a reservation or manually enter an IP on the new range when hooked into the cisco network the client has no problem. But when set to automatic the client will not receive a new address, it will actually get a local, then an address in the old scope. Any other questions please post.