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Lesson 4
Assigning IP Addresses
2-35
Lesson 4: Assigning IP Addresses
Once you have calculated the IP addresses and subnet mask for the computers
on your
network, you should include in your plan just how the actual TCP/IP
configuration
process for each of the computers is going to proceed. There are two basic
alternatives
from which to choose. You can manually configure each computer, or you can
use
DHCP, an automated TCP/IP configuration service included with Windows Server
2003
and many other operating systems.
After this lesson, you will be able to
■ List the drawbacks of manual TCP/IP client configuration
■ Understand how DHCP automatically configures TCP/IP clients
Estimated lesson time: 15 minutes
Manually Configuring TCP/IP Clients
Configuring the TCP/IP client on a Windows computer by hand is a relatively
simple
task, but when compounded by hundreds or thousands of computers, it can
become
an administrative nightmare. Not only does an administrator have to travel
to each
computer to configure its settings, but the administrator must also take
steps to ensure
that each computer is assigned an IP address that is appropriate for the
subnet on
which the computer is located and that does not duplicate the IP address of
any other
computer in the enterprise. For a large network installation in which time
is at a pre-
mium, you might have to bring in temporary personnel to help with the TCP/IP
con-
figuration chores.
Planning
Keep in mind that in addition to the time and staff needed to perform the
initial
TCP/IP configurations, you will also need to spend time to manually
reconfigure a computer if
you later decide to move it to a different subnet.
Off the Record For a large network installation, manually configuring TCP/IP
clients is
time-consuming, inefficient, and prone to errors. DHCP enables you to
automatically configure
your computers and reconfigure them each time they start up. If you decide
to move a com-
puter to a different subnet, DHCP assigns it a new address and reclaims the
old one for
assignment to another computer.
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