DHCP is a network protocol that allows computers on a network to find each other. DHCP is used by networks to assign addresses to devices on the network. In Windows Server 2008 R2, DHCP is available in two modes: server mode and client mode. Server Mode In server mode, DHCP is used by the computer running Windows Server 2008 R2 to find and bind an address to a device on the network. This process can be completed automatically or you can use the dhcpcd command line tool to do it manually. The dhcpcd command line tool can be found in the C:\Windows\system32\dhcpcsvc folder. To use DHCP server mode, you must first create a new DHCP client object with the following command: New-DHCPClient -Name “MyClient” -Addresses 192.168.1.1 -DhcpServer

Continuing our series on learning IT basics, today we’re going to show you how to setup DHCP on Windows Server 2008 instead of using it on a router.

Note: this is part of our ongoing series teaching IT administration basics, and might not apply to everybody.

This guide assumes that you have Server 2008 up and running on a machine–if you don’t, you should check out our guide on how to install it. You should also have set a static IP address on the server before continuing.

To get started, fire up the Server Manager, right click on roles, and then select add roles.

You will be prompted with the normal “Before You Begin” screen, and after clicking Next you’ll be able to choose DHCP Server.

Next you’ll want to select the network connection to bind the DHCP protocol to.

Put in the IP address of your DNS Server, which in this case is the same machine–but be careful not to put the loopback address (127.0.0.1) as this will be the address your clients will go to for name resolution.

Click next again to skip the WINS setup, this will bring you to creating a DHCP Scope, where you can click the Add button.

Now you need to:

Give your scope a name Enter the first address that you want available to clients to use Enter the last address that you want available to clients to use Enter the subnet mask (usually 255. 255. 255. 0) Enter the IP address of your default gateway (usually your router IP at . 1)

Once you have clicked on OK, you can click next 4 times to get to the confirmation screen where you can finally click install.

Once the installation is complete your DHCP will be functioning, and you can start managing your DHCP server right away.