70-291 – Managing DHCP Pt. 8

As I mentioned in a previous article, a DHCP server can assign parameters other than just an IP address and subnet mask to a DHCP client. A number of different options can be configured. To access the Server Options dialog box, highlight Server Options in the left pane of the DHCP management console and select Configure Options from the Action menu.

The following list provides a description of the commonly used DHCP options:

  • 006 DNS Servers - Specifies the IP address of the DNS servers available to clients on the network.

  • 015 DNS Domain Name - Specifies the DNS domain name used for client resolutions.
  • 003 Router - Specifies the IP address of the router or default gateway.
  • 044 WINS/NBNS Servers - Specifies the IP address of the WINS servers on the network available to clients.
  • 046 WINS/NBT Node Type - Specifies the name resolution type. The available options include 1= B-node (broadcast), 2 = P-node (peer), 4 = M-node (mixed), and 8 = H-node (hybrid).
  • 240 Classless Static Routes - Specifies a list of static routes, including the destination network IP address, the subnet mask, and the router that is responsible for forwarding messages to that network.

Most of the options outlined in the preceding list can also be configured locally on the client. By doing so, any options configured on the DHCP server will be overwritten by those configured locally. Although if you are using DHCP, it would not make sense to configure the options locally as well, especially in terms of administrative overhead.

With that, you should be a little more prepared to answer any DHCP related questions. Once you go through all the information, the best way to reinforce it is to install, configure, and experiment with DHCP.

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