DHCP exclusion is the process using which you can exclude a single IP address or a range of addresses from getting assigned to any computer on the network. Exclusions are used when you have assigned static addresses to the leading computers (servers) of your network and you do not want DHCP server to assign same address to the client computers hence creating IP conflicts. You can define exclusion range by following the steps given below:
- On DHCP server log on with Administrator account.
- Click on Start button.
- From start menu go to Administrative Tools and from the sub-menu click on DHCP.
- In DHCP snap-in expand the scope for which you want to define reservations and from the list right click on Address Pool.
- From the context menu select New Exclusion Range.
- On the Add Exclusion box type the first IP address of the range which you want to exclude. Also specify last IP address of the range. If you want to exclude only one IP address you can type that IP address in both Start IP address and End IP address text boxes.
- Click on Add button to create a new exclusion range and close Add Exclusion box by clicking on Close button.