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| Provide custom DHCP options with user classes on the Windows 2000 Server |
| In the Windows 2000 Server DHCP service, user classes enable the server to provide specific |
| settings to clients that require custom settings. For example, portable computers might require a |
| shorter DHCP lease duration than fixed workstations. |
| Follow these steps to create user classes in the DHCP console: |
| Open the DHCP console, right-click the server, and choose Define User Classes. |
| Click Add in the DHCP User Classes dialog box and then specify a name, optional description, and |
| class ID. The class ID is the string you will configure on the client as that client's user class. |
| Right-click the Scope Options branch, choose Configure Options, and click Advanced. |
| Select the user class from the User Class drop-down list and, in the resulting Available Options |
| list, select and set the options that you want to apply to computers in the selected user class. |
| On a client workstation, open a command console and execute the following command: |
| ipconfig /setclassid <adapter> <ClassIDString> |
| Replace <adapter> with the interface name and <ClassIDString> with the user class. For example, |
| assuming Local Area Connection is the default interface name and portable is the user class string, |
| ipconfig /setclassid "Local Area Connection" portable |
| Configuring lease timeout for portable computers is just one of many applications for user classes. |
| Consider employing user classes any time you need to assign custom DHCP settings to a particular |
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