I have a Windows 2008 server running DHCP. I'll be kicking the remaining XP systems off my network by the end of the month. I'm concerned that some of them might wander back in and get reconnected. I'd like to set up DHCP so it hands out bogus IP info to these systems making it impossible for them to communicate on the network. I set up a scope on my DHCP server for a bogus IP range. I then put in a reservation for a MAC address in that scope and activate the scope. I go to the machine with that MAC address and release the address, delete its lease from the server and renew its lease. It comes back with a lease from the good IP range instead of the bogus one. Is there something I can do to make this procedure work or am I just out of luck?
Thanks for your help. Curt
