Configuring continuous visibility of DHCP leases - Adaptive Applications - BlueCat Gateway - 22.7

BlueCat Overlay for Microsoft

Product name
BlueCat Gateway

For continuous visibility of DHCP leases, you must install an additional plug-in on the DNS/DHCP Server. The plug-in regularly polls Microsoft DHCP servers to check for recent DHCP activity. New leases are updated to the lease database on the DNS/DHCP Server and notified to Address Manager.

Unlike IP addresses imported using the BlueCat Overlay for Microsoft synchronization function where the state is assigned, the plug-in DHCP IP addresses are recorded with the same DHCP states that are used by BlueCat DHCP and the lease history is updated.


Before you begin, ensure that the following prerequisites are met:
  • You have a DNS/DHCP Server under Address Manager control. The DNS/DHCP Server must not provide DHCP service and must not have DHCP roles assigned to it within Address Manager.
  • You have a Windows DHCP server with audit logging enabled.

Preparing the Windows server for DHCP lease visibility

  1. Enable remote PowerShell access for the assigned credentials. For more information, refer to Configuring Non-Administrative Windows Accounts.
  2. Enable Audit Logging on the Windows DHCP Server by running the following command on the Windows DHCP Server:
    Set-DhcpServerAuditLog -Enable $True -Path <audit-log-path> -MaxMBFileSize <max-MX-file-size>
    Where the parameters are as follows:
    • <audit-log-path>: The path to the directory where the audit log files are created.
    • <max-MX-file-size>: The maximum disk space available for DHCP service audit log files in megabytes (MB).