Appendix B Event and Alarm Correlation Flow

Event Correlation Flow

If it is box-level correlation the event is stored in the application for the correlation delay period and during this period collects all possible root causes having the same correlation delay.

If it is flow-level correlation, then the flow will start after the correlation delay.

2.The flow starting and ending points are defined by the event correlation parameters (see Table B-1).

3.After the flow finishes it will get a message that contains all the collected alarms. Alarms are collected on every DC that the flow intercepts regardless of the original correlation key of the event that triggered it.

Correlation Logic (Event Correlator)

The correlation logic is used for determining the most fitting alarm to serve as a root cause for the specified event. It selects from the alarms, the most fitting alarm (root cause), based on the correlation filters and selects the root cause method.

Alarm Sending (Event Correlator)

Once an event has gone through the correlation process it will be transformed into an alarm and will be sent to the gateway.

Post-Correlation Rule (Event Correlator)

The post-correlation rule is used for performing logic which needs to be performed after the event had been sent. Usually the post-correlation rule is used for triggering additional behaviors such as search for affected services that where influenced by the alarm.

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Cisco Systems 3.6 specifications Correlation Logic Event Correlator, Alarm Sending Event Correlator
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3.6 specifications

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In conclusion, Cisco Systems 3.6 represents a comprehensive evolution in networking technology, focusing on automation, security, cloud integration, SDN, collaboration, and energy efficiency. These features position Cisco as a pivotal player in supporting organizations as they navigate the complexities of digital transformation and the future of networking.
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