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Installing the DHCP Role

You use the Add Roles Wizard to install the DHCP server. Before you install DHCP on a server, you must configure the server with a static IP address.

By the Way

When you bring your first Windows Server 2008 domain controller online by installing Active Directory Domain Services (AD DS), you are given the option of installing DNS as you bring AD DS online and create the new domain controller. You may want to also install the DHCP role on that server, using the Add Roles Wizard. The instructions that follow would install the DHCP role on either a domain controller (running AD DS) or a standalone DHCP server running Windows Server 2008. The remainder of the hour then looks at useful configuration information that applies to both standalone DHCP servers and domain controllers also providing the DHCP role.

To add DHCP using the Add Roles Wizard, follow these steps:

1. Start the Add Roles Wizard; in the Initial Configuration Tasks window, click Add Roles in the Customize This Server section of the window or click Add Roles in the Server Manager Details pane (when the Roles node is selected). Then click Next to bypass the initial wizard screen.

2. The first screen reminds you to configure a strong password for the administrator’s account and configure a static IP address for the server. Click Next.

3. A list of server roles appears (see Figure 16.1). Select DHCP Server and then click Next.

Figure 16.1. The wizard provides a list of server roles.

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4. The next screen provides an introduction to the DHCP Server role and also provides a list of things to note such as configuring the server with a static IP address and creating a plan for your IP subnets scopes and exclusions. (More about IP addressing is discussed in Hour 7, “Working with the TCP/IP Network Protocol.”) Click Next to continue.

5. The next screen detects network connections on the server that have been configured with a static IP address. (The number of connections detected depends on the number of network interfaces on the server.) Select the network connection or connections that the DHCP server is to use for servicing clients (see Figure 16.2) and then click Next to continue.

Figure 16.2. Select the network connections to be used by the DHCP server.

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6. On the next screen, you need to specify the parent domain (that the clients will use for name resolution) and the preferred DNS server IPv4 address (see Figure 16.3). If the server is also configured with AD DS and DNS, this information is entered automatically. Click Next to continue.

Figure 16.3. Provide the parent domain name and the preferred DNS server IP address.

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Did you Know?

You can also provide the IP address of an alternate DNS server when you provide the parent domain and preferred DNS server IP address.

7. Some network applications may require a WINS server. (WINS is discussed in detail in Hour 20, “Understanding WINS.”) The default setting on this screen is WINS, which is not required for applications on this network (and so is not integrated with the DHCP settings transmitted to DHCP clients). If WINS is needed on your network, click WINS Is Required for Applications on This Network and then provide the IP address of your WINS server (you can enter IP addresses for both a preferred and alternate WINS server). Then click Next to continue.

The next step in configuring the DHCP server is to configure a scope of IP addresses. Because scopes require some background discussion, we will pick up the next wizard step in the next section.

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