Adding failover relationships for MS DHCP - User Guide - BlueCat Horizon

BlueCat Horizon User Guide
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BlueCat Horizon

DDI orchestrator manages failover relationships at both the scope and server levels. Scopes group IP addresses logically and help to manage failover efficiently. You can customize DHCP configurations per scope to suit the specific requirements of different network segments.

When adding failover relationships for Microsoft (MS) DHCP servers, scopes are not added to the relationship. Instead, you must add the scopes later using the Add scope to failover action.

Adding a failover relationship for MS DHCP in DDI orchestrator

To add a failover relationship for MS DHCP in DDI orchestrator:

  1. On the Admin page, select the Service management tab.
  2. In the left sidebar, under DHCP services, select Microsoft DHCP.
  3. Select the server that you want as the primary server in the failover relationship.
  4. Use either the Action menu or the ellipses in the row to select Manage failover.
  5. Select + Add relationship.
  6. In the Initial setup step, enter the following information:
    The Initial setup step of the Add relationship dialog.
    • Failover name: The name for the relationship.
    • Failover mode: Select the failover mode you want to use,such as Hot standby and Load balance.
    • Partner server: Select the partner server for the failover configuration.

    Then select Next.

  7. In the Options step, enter the following information:
    • Local server load balance percentage: If you selected the Load balance mode, you must specify the load balance percentage for the local server. The remaining percentage will be used on the partner server.
    • Addresses reserved for standby server: If you selected the Hot standby mode, you must set the percentage of addresses reserved for the standby server.
    • Maximum client lead time: Enter a value, in seconds, if different from the default.
    • State switchover interval: Specify an interval, in seconds, for Automatic State Switchover. If you set the value to zero, Automatic State Switchover is disabled.
    • Shared secret for message authentication: If you want to use message authentication between the DHCP servers, you must enter a shared secret for the message authentication.
  8. After confirming the details in the Summary step, select Add.