Wide-area heartbeats

There must be at least one wide-area heartbeat going from each cluster to every other cluster. VCS starts communicating with a cluster only after the heartbeat reports that the cluster is alive. VCS uses the ICMP ping by default, the infrastructure for which is bundled with the product. VCS configures the ICMP heartbeat if you use Cluster Manager (Java Console) to set up your global cluster. Other heartbeats must be configured manually.