70-282 Exam Cram: Configure DHCP

Howdy – I am the publisher for the 70-282 exam cram book also known as the Microsoft Small Business Specialist Primer book. I am holding this virtual book reading by posting up a passage on DHCP configuration.

Configure DHCP and IP Addressing

SBS 2003 automatically installs the DHCP server service during setup at mid­point when a screen titled Windows Components is displayed. DHCP simplifies the administration of IP address assignments to client computers on the local network. If an existing DHCP service is detected, you are prompted to choose whether you want to use the existing service (say on your hardware-based router) or disable the service and use the DHCP Server service provided with SBS. It is recommended that you disable the existing DHCP service (again-on your hardware-based router as an example) and utilize the DHCP service in SBS. This way you ensure that the DHCP settings for your local network are properly configured. During setup, if you click NEXT, NEXT, NEXT in the SBS Setup Wizard, SBS creates an IP Address scope of to Addresses from to are excluded from DHCP assignment.

IMPORTANT: The default private IP address range is 192.168.16. x in SBS 2003. However, you could use another private IP address range such as 10.0.0.x without any major drama on your SBS 2003 network. You would make this type of private IP address range deci­sion when you encounter the Local Network Adapter Configuration screen (technically Step 29) during the SBS 2003 setup process. It is important for 70-282 testing purposes to understand that different private address ranges are allowed.

To view the DHCP scope:

  • 1. Go to Start.
  • 2. Click Run.
  • 3. Type dhcpmgmt .msc and hit Enter.

Don’t despair, the DHCP fun-wagon is not over yet. You will find much more detailed information under the heading DHCP in Chapter 10, Installing and Configuring Windows Server 2003.

Configuring an Existing DHCP Service or Firewall Device

Time to get manual, baby! If you have an existing device on the local network that assigns IP addresses to client computers using DHCP, it must be configured with the necessary settings for your local network. If the device supports Universal Plug and Play (UPnP), Setup will prompt you to configure the device automatically. If the device is not a UPnP device, you will have to configure it manually. In this case, settings have to be configured as follows:

Default Gateway

If the SBS 2003 Server has two NICs, enter the internal NIC IP address as the default gateway.

IMPORTANT: Now is as good a time as any to slip in this SBS DHCP
factoid! This is fair game on the 70-282 exam, so please read and
heed. The external NIC card on an SBS server machine in a two

Chapter 7Configuring Windows Small Business Server 2003

NIC card scenario may receive its external address from an external source, namely being assigned a dynamic IP.

Try this on for size. Imagine your client doesn’t want to pay for a static IP address. In that situation you can have a dynamically assigned IP address on the external NIC card. This would bring some challenges with it, especially if you want to use Exchange or require an assigned IP for hosting a website. In this case you could revert to a third party like www.dyndns.com (which you would not find questions like this on the 70-2 82 exam and is provided here as a mere factoid!).

If the SBS 2003 Server has one NIC and you are using the router device to connect to the Internet, use the IP address of the router’s internal interface as the default gateway.


Harry Brelsford, CEO at SMB Nation

MBA, MCSE, CNE, CLSE, CNP, MCP, MCT, SBSC (Microsoft Small Business Specialist)

PS – my Small Business Server 2008 (SBS 2008) book is now here! J

PPS – my spring show, SMB Nation Spring 2009, is in the NYC-area on May 1-3, 2009.


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