DHCP (Dynamic Host Configuration Protocol)
Technology Primer v1.1c
. Why do I need DHCP?
. How does DHCP work?
. To Get Going
Introduction : IP Address Assignment
We are familiar with the Internet as its reach continues to pervade even the most remote of homes
worldwide. Yet, one of the biggest challenges facing us in such a TCP/IP network is assigning IP addresses
and other configuration parameters for each device. No two devices on the same network may use the
same IP address without one being denied access, but this process of assigning and managing the IP
address resources can be a laborious and painstaking job for the network administrator. Hence, the arrival
of the Dynamic Host Configuration Protocol, or DHCP in short!
DHCP automatically allocates reusable network addresses, reducing the headache involved in the issuing
of new IP addresses and keeping track of the present set up. It also helps administrators make more
efficient use of limited IP address resources.
DHCP Technology Primer
Why do I need DHCP?
With the advent of many Internet appliances and peripherals, and the added connectivity between
computers within and without a business, assigning a unique IP address to each of these devices has
become an increasingly laborious task. In fact, without DHCP, the network administrator will have to keep a
manually-updated DNS database and assign addresses as required. It is also required that the addresses
be manually entered at each client computer, thus necessitating significant effort network-wide.
The typical network in an office has numerous desktop PCs and pockets of notebook/PDA users that will
require a very able network administrator who will keep track and manage the pool of available IP
addresses. Without a means to dynamically allocate IP addresses to these clients, whenever a client PC or
a notebook user goes offline, the IP address allocated to the user will never expire even though he ma