IP Availability Manager diagnoses root-cause problems and detects (computes) events from status changes gathered from or issued by devices in the managed environment. It uses the events as symptoms to diagnose root-cause problems.
Events used as symptoms to diagnose a failure can also be perceived as impacts resulting from the failure.
IP Availability Manager also generates exceptions, or aggregate events, where an exception is a collection of problems or events associated with a particular managed system, IPv6Network, or VLAN. IP Availability Manager generates an exception whenever any of the composite problems or events for the system, IPv6Network, or VLAN occur. For example, IP Availability Manager will generate an exception for a router when a card on the router has a problem or the router is down.
The Global Manager imports all problems diagnosed by IP Availability Manager and certain key events detected by IP Availability Manager. It also imports the IPv6Network inaccessible exception. The problem notifications (one problem per notification), notifications (one event per notification), and IPv6Network exception notifications (one exception per notification) are displayed in the Global Console.
IP Performance Manager generates exceptions, detects performance faults, and detects events. It uses the performance faults to generate exceptions.
A performance fault is an abnormal condition that occurs when a component of a managed system, Chassis, or VLAN exceeds a threshold. An exception, or aggregate event, is a collection of performance faults associated with a particular managed system, Chassis, or VLAN. IP Performance Manager generates an exception whenever any of the composite faults for the managed system, Chassis, or VLAN occur. For example, IP Performance Manager will generate a ResourceException whenever a router has exhausted most of its processor or memory resources.
The Global Manager imports all faults and events detected by IP Performance Manager. The fault notifications (one fault per notification) and the event notifications (one event per notification) are displayed in the Global Console.