DNS/DHCP Management Console

Creating a Failover Peer

The Failover object defines methods for two servers to share common address pools and ensure continuous availability.

It defines a role of the Primary Server and the Secondary Server in event of a system failure. During a prolonged failure of the Primary Server, the Secondary Server recovers all the addresses that the Primary Server had available for allocation, and begins to reuse them.

To create Failover:

  1. Select  the service for which you want to create the Failover Peer object.
  2. Specify a name to identify the Failover Peer object.
  3. Specify the IP Address of the Primary Server.
  4. Specify the Port number of the Primary Server.
  5. Specify the IP Address of the Secondary Server.
  6. Specify the Port number of the Secondary Server.
  7. Specify the Max Client Lead Time. This is the length of time for which a lease may be renewed by either server without contacting the other. (Specify this on the Primary Server. This cannot be specified on the Secondary Server).
  8. Specify the Failover Split. This specifies the split between the Primary and Secondary Servers for the purpose of load balancing.
  9. Click Create.

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