Sorry but your question is very vague. Can you get help re-writing it so we can assist you? Not sure whether you are trying to set the NIC on one server to the correct DHCP settings or setting up a server as a DHCP server. Please provide more details. Thanks.
If you want to configure a DHCP server, have a look at the following page:
DHCP server role: Configuring a DHCP server
Once your scope is configured make sure you activate and authorize it. If it is not authorized on your domain, it will not work.