You can extend the reach of hierarchical alerting beyond the basic platform-server-service hierarchy to top level platforms - network devices or virtual hosts upon which operating system platforms depend.

To enable vCenter Hyperic to consider a top-level platform's availability and alert status before firing an alert for a dependent resources, you must define the relationship between a top-level platform and the operating system platforms that depend on it.

Use the Network Host Dependency Manager, available in the Plugins section on the Administration tab of the user interface.