Multiple Rear Interfaces

Configuring your HA node to support multiple rear interfaces eliminates the possibility that either of the rear interfaces you configure for HA support will become a single point of failure. Using this feature, you can configure individual Oracle® Enterprise Session Border Controller s with multiple destinations on the two rear interfaces, creating an added layer of failover support.

When you configure your HA node for multiple rear interface support, you can use last two rear interfaces (wancom1 and wancom2) for HA—the first (wancom0) being used for Oracle® Enterprise Session Border Controller management. You can connect your Oracle® Enterprise Session Border Controller s using any combination of wancom1 and wancom2 on both systems. Over these rear interfaces, the Oracle® Enterprise Session Border Controller s in the HA node share the following information:

• Health
• Media flow
• Signaling
• Configuration

For example, if one of the rear interface cables is disconnected or if the interface connection fails for some other reason, all health, media flow, signaling, and configuration information can be checkpointed over the other interface.

Health information is checkpointed across all configured interfaces. However, media flow, signaling, and configuration information is checkpointed across one interface at a time, as determined by the Oracle® Enterprise Session Border Controller ’s system HA processes.