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DHCP has been an unassuming network service as of late. The simplicity of the protocol is another reason for its success because it is not cursed by a high degree of administrative complexity. However, greater control over a DHCP environment can be achieved through the understanding of some advanced concepts regarding its use. Some of these concepts are new to Windows Server 2008 R2, and some were introduced in Windows 2000 Server, Windows Server 2003, and Windows Server 2008. These improvements can help you gain control over a DHCP environment and provide for more security and ease of use.
A DHCP superscope is used for environments in which multiple network subnets encompass a single scope environment. In these cases, a superscope can be created to contain multiple scopes. The individual scopes are subsequently dependent on the master superscope. If it is turned off, they will also be deactivated.