Resource Limit Is Reached

The website is temporarily unable to service your request as it exceeded resource limit. Please try again later. Configuring a DHCP Superscope

508 Resource Limit Is Reached

Resource Limit Is Reached

The website is temporarily unable to service your request as it exceeded resource limit. Please try again later.

A superscope is an administrative feature of Dynamic Host Configuration Protocol (DHCP) servers running Windows Server 2008 that you can create and manage by using the DHCP Microsoft Management Console (MMC) snap-in. By using a superscope, you can group multiple scopes as a single administrative entity. With this feature, a DHCP server can:

In multinet configurations, you can use DHCP superscopes to group and activate individual scope ranges of IP addresses used on your network. In this way, the DHCP server can activate and provide leases from more than one scope to clients on a single physical network.

Superscopes can resolve specific types of DHCP deployment issues for multinets, including situations in which:

Superscope configurations for multinets

The following section shows how a simple DHCP network consisting originally of one physical network segment and one DHCP server can be extended to use superscopes for support of multinet configurations.

Example 1: Non-routed DHCP server (before superscope)

In this example, a small local area network (LAN) with one DHCP server supports a single physical subnet, Subnet A. The DHCP server in this configuration is limited to leasing addresses to clients on this same physical subnet.

The following illustration shows this example network in its original state. At this point, no superscopes have been added and a single scope, Scope 1, is used to service all DHCP clients on Subnet A.

Single subnet and DHCP server (before superscope)

Example 2: Superscope for non-routed DHCP server supporting local multinets

To include multinets implemented for client computers on Subnet A, the same network segment where the DHCP server is located, you can configure a superscope that includes as members the original scope (Scope 1) and additional scopes for the logical multinets for which you need to add support (Scope 2 and Scope 3).

This illustration shows the scope and superscope configuration to support the multinets on the same physical network (Subnet A) as the DHCP server.

Superscope for non-routed DHCP server

Example 3: Superscope for routed DHCP server with relay agent supporting remote multinets

To include multinets implemented for client computers on Subnet B, the remote network segment located across a router from the DHCP server on Subnet A, you can configure a superscope that includes as members the additional scopes for the logical multinets for which you need to add remote support (Scope 2 and Scope 3).

Because the multinets are for the remote network (Subnet B), the original scope (Scope 1) does not need to be part of the added superscope.

This illustration shows the scope and superscope configuration to support the multinets on the remote physical network (Subnet B) away from the DHCP server. A DHCP relay agent is used for DHCP servers to support clients on remote subnets.

Superscope for routed DHCP server

Create a superscope

You can use this procedure to create a DHCP superscope.

Membership in the Administrators or DHCP Administrators group is the minimum required to complete this procedure.

To create a superscope
  1. Open the DHCP snap-in.

  2. In the console tree, click the DHCP server you want to configure.

  3. On the Action menu, click New Superscope.

    This menu option only appears if at least one scope that is not currently part of a superscope has been created at the DHCP server.

  4. Follow the instructions in the New Superscope Wizard.

Additional Resources

For a list of Help topics providing related information, see Configuring DHCP Server Role Settings.

For updated detailed IT pro information about DHCP, see the Windows Server 2008 documentation on the Microsoft TechNet Web site.


508 Resource Limit Is Reached

Resource Limit Is Reached

The website is temporarily unable to service your request as it exceeded resource limit. Please try again later.