DHCP Instalaltion

Installing DHCP in Windows Server 2003:-
In my last artical I have discuss about the Basic of DHCP server , IP assignment process, DORA etc. Click here to know about the basic of DHCP and DORA process.
After completing this topic, you should be able to follow the steps to install the DHCP service. 1. DHCP installation:-
Before you install DHCP you need to ensure that there is a static IP address on the server and that you know the range of IP addresses that you will manually configure to be used in the IP address pool.
Note
To install DHCP, you need to have administrative rights on the server.
Installing DCHP involves
· accessing the Add/Remove Windows Components feature
· selecting DHCP from Networking Services
· running the DHCP wizard
To access the Add/Remove Windows Components feature, you select Start - Control Panel.
In the Control Panel window, you can access a range of configuration options. In this case, you double-click the Add/Remove Programs icon.
In the Add or Remove Programs window, you can add, change or remove programs and Windows components. You want to add the Windows DHCP option.
You click Add/Remove Windows Components or you press Alt+W.
The Windows Components Wizard allows you to add or remove Windows components.
In the Components list box you scroll to Networking Services to access the DHCP option for installation.
You select Networking Services and click the Details button or press Alt+D.
The Networking Services dialog box lists protocols that are subcomponents of Windows networking services.
In the Networking Services dialog box, you select Dynamic Host Configuration Protocol (DHCP) and then you click OK to confirm your choice
The Networking Services checkbox is selected and you could choose to add or remove other Windows components at this point.
In this case, you don't want to configure additional components and so you click Next to begin the installation.
The wizard automatically installs the DHCP components.
Once the installation is complete, the Finish page appears, and you click Finish to complete the installation.
You return to the Add or Remove Programs window and can now configure and authorize the DHCP server.
2. Authorizing DHCP
Historically, many network problems were caused by incorrectly configured DHCP servers being set up on the network. These rogue DHCP servers are active DHCP servers with incorrect IP address pools that can seriously disrupt network functioning.To prevent this, Windows Server 2003 requires you to authorize a DHCP server in Active Directory before it can become active on a network. Each time a DHCP service starts up, it checks in Active Directory to verify that it is authorized to do so.
Suppose that you have recently installed DHCP, and you now want to place the server online on the network. To do this you need to open the DHCP console, and authorize the DHCP server.
To open the DHCP console, you select Start - Administrative Tools - DHCP.
Because you have not yet configured the server, the DHCP console lists only the server and no other information is available.
To authorize the DHCP server, you select Authorize from the Action menu or you press Alt+A+Z.
In the console navigation pane, a green up-pointing arrow on the server icon indicates that the server is now authorized as a DHCP server.
When you select the DHCP node in the Navigation pane, the details pane shows the status of the server as running.
3. The DHCP console
Once the DHCP server software is installed, you can manage the DHCP service from the DHCP console.You can create, modify, and manage various DHCP scopes and TCP/IP configuration options. Once you created a scope on a newly installed DHCP server, you can access configuration options from the console.
The DHCP console lists servers in the navigation pane, so you can manage multiple DHCP servers from the console.It also lists a Server Options subfolder, in which you can create, list, and manage configuration options specific to each DHCP server.
Once you have created a scope, the DHCP console allows you configure and modify this range of DHCP options:
· Address Pool
· Address leases
· Reservations
· Scope Options
Address Pool
The Address Pool subfolder stores each address pool configured for a scope, including the exclusions defined when creating a scope.Description of Address Pool details pane - Description follows: The pane contains three columns – Start IP address, End IP address, and Description. .
Address leases :-
The Address Leases subfolder lists all address leases that the DHCP server issues. It provides the client IP address, the client name, the lease expiration date, the lease type, and the unique ID.Reservations
The Reservations subfolder lists IP addresses that you have reserved for specific DHCP clients. For example, you can specify particular IP addresses to DNS servers on the network.
Scope Options :-
The Scope Options folder lists any scope options that you have configured. These can include the default gateway for the scope or WINS servers for the scope. Scope options override server options and can be overridden by both Reservations and user class options.
Summary:-
Prerequisites for installing DHCP are a static IP address on the server and the range of IP addresses that should be used in the IP address pool.To prevent rogue DHCP servers, Windows Server 2003 requires you to authorize a DHCP server before it can become active on a network.You can manage the DHCP service from the DHCP console. The console lists all DHCP servers on the network, server options, and scopes.