A Quick Tip To Modify The Interval For DHCP Database Cleanup

DHCP Server must delete the "expired records" from its database (dhcp.mdb file) so that it releases space for new IP Addresses. By default, it does every 4 hours. You can modify this value by hacking the following registry entry:

  • KEY Name: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer
  • Entry Name: DatabaseCleanupInterval
  • Type: REG_DWORD
  • Value: (in minutes), default is 4 hours.


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