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Windows 2000 Configure DHCP Server

After installing the DHCP-server, you will need to configure it before you can use it:

Select "DHCP" , which is part of the
Windows menu "Administrative Tools".

In the left plane, you will see the name
and IP-address of the DHCP-server.
After installation, a DHCP
server is not authorized.
Do not forget this later !
see below )

You need to define the range of IP-addresses to be assigned (=distributed) by the DHCP-server.
A definition of a range of IP-addresses (with or without additional options) is called a "Scope":
select your DHCP-server and then either with a right-click or from the menu "Actions" select to
define a "New Scope":

Up comes the Wizard

select "Next"
Define a name for your

continue with "Next"
Define the range of IP-address
and the

Select a range, which does
not include the IP-address of
the server itself or any other
device with a manually
assigned IP-address (like:
network printers).

Although you could exclude
them in the next step, usually
a range is reserved for such
manually assigned addresses
and then the rest (in this case:
100 - 199 ) is given to the
DHCP-server for automatic
If you could not define separate
ranges for manually assigned
and DHCP-assigned
IP-addresses, then you could
here define IP-addresses or
ranges of IP-addresses to be
excluded: not to be used by
the DHCP-server.
Typically, an IP-address is
assigned (= "leased" ) for a
limited time.
This avoid running out of
addresses, when visitors to you
office connect to the network
and get an IP-address assigned.
Without a time-limit, such an
IP-address could not be reused.

usually, 8 days is a good choice and will
ensure that people every day in the
office will |continue to use the same
IP-address once assigned to them,
since their systems will in time extend
the "lease". And if they come back from
a 2 week vacation and the "lease" has
expired, then the DHCP-server will
assign a new IP-address to them.
In addition to the IP-address
Sub-Netmask, a DHCP-
server can also be use to
define other TCP/IP configuration
items on the Client systems.
Is your office network part of
a larger company
network (WAN )
Then you need to configure
the client computers with the
IP-address of the
(or Router)
to be able to
communicate with systems
on the WAN.

Enter the IP-address and then
click on "Add" to enter the
address to the list of Gateways.
Are you using a WAN and need
to help your clients to locate the
IP-addresses of servers
(like WebServers) on the WAN ?
Or do you intend to have clients
connected to the Windows2000
server via the new
:"Active Directory" method ?

Then you must configure the
clients for use of a

Enter the name of your server
and the IP-address and click on
"Add" to enter the value on the
You can also configure
the WINS server address
You need to activate the scope,
( which you can do later with a
right-click on the scope and selecting :
"Activate"/"Deactivate" :


You still have to "Authorize" the DHCP-server:
select the server and either right-click or from the menu "Action" select "Authorize" :

Note: on my system, I had to close now the DHCP-windows and open it up again to see,
that the DHCP-server is now "Running" :

a quick check on the "Scope Options", which we have configured already:

If required, you can change or add
the options of the scope.

You can configure in the "Properties" of the scope, tab : DNS, that once the DHCP-server
has assigned an IP-address the address will be updated in the DNS-server, allowing now
other systems on the network to locate your system :

Once the DHCP-server is configured and authorized and the scope is activated, IP-addresses
will be distributed . You can then
view the list of assigned IP-addresses.

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