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Object
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Description
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Node |
Represents either a workstation, server, or a network device, such as a router, hub, or bridge. |
Property |
A text string that describes the type of node or one of the node's MIB objects. Polls and alarms use properties to target specific nodes. |
Property group |
A group of properties assigned to a node. The properties in the group allow behavior models to target the node. |
Trigger |
An internal event that is generated when a defined network event has been detected or a condition satisfied. Triggers are generated by polls and trap masks, as well as by other NerveCenter objects such as Perl subroutines and NerveCenter alarms. |
Poll |
Periodically solicits defined SNMP values from the agents running on targeted nodes and fires a trigger when specified conditions are met. Polls can fire multiple triggers, which can be detected by one or more alarms. |
Trap mask |
Detects a predefined type of SNMP trap. Trap masks can specify generic and specific trap numbers, enterprise OIDs, and variable binding data to match against incoming traps. A trap mask fires a trigger when the specified type of trap is detected. |
Alarm |
Detects triggers that cause the alarm to transition from one state to the next. Each transition is triggered by its own set of network data, which is defined in the poll or mask that generates the associated trigger. The alarm performs any actions assigned to a transition. |