ADS Unplugged

STEP 3. Install and Configure DHCP
For ADS to image source servers, the source server must be PXE bootable and a DHCP server must be on the network to provide IP address information. Because the mobile ADS solution will be isolated from your production network, the solution must provide the DHCP services.

You need to install DHCP before you install ADS so that the ADS installation will automatically configure DHCP to support ADS. To install and configure DHCP, you can use the Configure Your Server Wizard or the Control Panel Add or Remove Programs applet. The Configure Your Server Wizard is basically a scripted front end to the same process you would go through if you used the Add or Remove Programs applet. Here's how to use the wizard to install and configure DHCP:

1. Insert the Windows 2003 CD-ROM into the CD-ROM drive. Click Start, select Administrative Tools, then choose the Configure Your Server Wizard option.
2. On both the wizard's opening page and the Preliminary Steps page, click Next. In some instances, you might be prompted with a Configuration Options page. If you get this page, select Custom configuration and click Next.
3. In the Server Role page, which Figure 1 shows, select DHCP server, then click Next. You should be on the Summary of Selections page, which just lists all the roles that you selected for installation. Click Next to start the installation of DHCP.
4. A new wizard will appear. The New Scope Wizard walks you through creating a scope for the DHCP server. Click Next to start the process. The wizard first asks you for a unique name and description for the DHCP scope. Enter a name that you'll be able to easily recognize as the DHCP scope. After you enter a name and description, click Next to continue.
5. On the IP Address Range page, set the IP address range that the DHCP scope will hand out to any machine requesting an address. You need to allow for the number of active source machines plugged into the Gigabit Ethernet switch and possibly that many VMs running simultaneously, so 10 addresses should be sufficient for a four-port switch. Set the starting IP address to 10.10.10.25 and the ending IP address to 10.10.10.34, which gives 10 available DHCP addresses. Set the length to 24 bits (a subnet mask of 255.255.255.0), and click Next.
6. You don't need any statically assigned addresses in the DHCP address pool, so you don't need to specify any exclusions on the Add Exclusions page. Click Next to skip this page.
7. The Lease Duration page defines how long a client can use an IP address. The default lease duration of 8 days should be more than enough, so accept the default value and click Next.
8. In the Configuration DHCP Options page, you typically specify any additional options you want to provide to DHCP clients. In the mobile ADS solution, you need an option to support the PXE server location. However, the ADS installation will configure that option for you, so select No and click Next.
9. Click Finish to complete the installation of DHCP, then click Finish to close the Configure Your Server Wizard.
10. In the Manage Your Server summary display, the DHCP role should be listed as one of the roles configured for the server. Select the Manage this DHCP server option for the DHCP role to launch the Microsoft Management Console (MMC) DHCP snapin. You'll see MobileP2V listed in the left pane. Expand the display so that you see Scope [10.10.10.0] xxxxxxx (where xxxxxxx is the scope name you entered in Step 4) and Server Options listed. Select the scope, rightclick it, then select Activate. DHCP is now operational with a functioning DCHP scope that will serve addresses on the Gigabit Ethernet switch to enable PXE boots.

It's a good idea to test DHCP. After you make sure that your test server is configured to use DHCP, connect it to the switch and run the command

ipconfig /renew 

Make sure that the returned IP address is in the range from 10.10.10.25 to 10.10.10.34. You can also look in the DHCP snap-in to verify the address was assigned.

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