It is a communications protocol that lets network administrators centrally manage and automate the assignment of Internet Protocol (IP) addresses in an organisation’s network. Using the Internet Protocol, each machine that can connect to the Internet needs a unique IP address, which is assigned when an Internet connection is created for a specific computer. Without DHCP the IP address must be entered manually at each computer in an organisation and a new IP address must be entered each time a computer moves to a new location on the network. DHCP lets a network administrator supervise and distribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network.