If operating system platforms in your environment depend on the Network Device platform, you can define those dependencies using the Network Host Dependency Manager. This optional configuration is useful when vCenter Hyperic's hierarchical alerting feature is enabled.

With hierarchical alerting, the alert evaluation process for a resource takes into account the availability and alert status of the resource's parent. If you configure the relationship between a Network Device and the operating system platforms that depend on it, vCenter Hyperic will take the availability of the Network Device into account when evaluating alerts triggered for the operating system platforms - and so avoid firing redundant alerts when a problem with the Network Device makes dependent resources unavailable.

To define dependency relationships:

From the Plugins section on the Administration tab of the vCenter Hyperic user interface, select the Network Host Dependency Manager.