Network Failure

A network failure occurs when none of the cluster nodes can access each other using any of the network interface cards configured for the HACMP network.
To protect against network failures, we recommend that you have the nodes in the cluster connected by multiple networks. If one network fails, HACMP uses a network that is still available for cluster traffic and for monitoring the status of the nodes (heartbeating).
You can also specify additional actions to process a network failure—for example, re-routing through an alternate network.