Cisco Systems 3.6 specifications Event and Alarm Correlation Flow

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A P P E N D I X B

Event and Alarm Correlation Flow

This chapter describes in detail the flow of alarms and events during the correlation process.

•Software Function Architecture—Provides an event correlation flow diagram.

•Event Correlation Flow—Includes the following sections:

–Event Creation (VNE level)

–Event Correlation

–Correlation Logic (Event Correlator)

–Alarm Sending (Event Correlator)

–Post-Correlation Rule (Event Correlator)

Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1

	OL-14284-01	B-1

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Contents Americas Headquarters Page N T E N T S Multi Route Correlation Cloud VNE Alarm Sending Event Correlator Vii About This GuideViii Managing Events Fault Management OverviewBasic Concepts and Terms AlarmEvent Sequence EventFlapping Events Repeating Event SequenceTicket Correlation By Root CauseSequence Association and Root Cause Analysis Severity PropagationEvent Processing Overview OL-14284-01 Unreachable Network Elements Fault Detection and IsolationVNE Integrity Service Sources of Alarms On a DeviceAlarm Integrity Fault Detection and Isolation Integrity Service Cisco ANA Event Correlation and Suppression Event SuppressionCisco ANA Root-Cause Correlation ProcessCorrelation Flows Root-Cause AlarmsCorrelation by Key Correlation by FlowCorrelating TCA Using WeightsDC Model Correlation Cache Connectivity Test Device Unreachable AlarmAdvanced Correlation Scenarios Device Unreachable Example Device Fault IdentificationIP Interface Failure Scenarios IP Interface Status Down AlarmCorrelation of Syslogs and Traps IP Interface Failure Examples All IP Interfaces Down AlarmInterface Example 10.200.1.2 General Interface Example Ethernet, Fast Ethernet, Giga Ethernet Examples ATM ExamplesIp interface status down Parameters Interface Registry ParametersMulti Route Correlation Example Multi Route Correlation11 Multi Route Correlation Example Generic Routing Encapsulation GRE Tunnel Down/Up GRE Tunnel Down/Up Alarm14 GRE Tunnel Down Example 1 Single GRE Tunnel GRE Tunnel Down Correlation Example15 GRE Tunnel Down Example 2 Multiple GRE Tunnels 16 Alarms Correlation to GRE Tunnel Down Ticket LDP Neighbor Down Alarm BGP Process Down AlarmMpls Interface Removed Alarm OL-14284-01 Types of Unmanaged Networks Supported Correlation Over Unmanaged SegmentsCloud VNE Supported When Logical Inventory Physical Inventory Cloud Correlation Example Cloud Problem AlarmOL-14284-01 Alarm Type Definition Event and Alarm Configuration ParametersGeneral Event Parameters Event Sub-Type Configuration ParametersRoot Cause Configuration Parameters Network Correlation Parameters Correlation Configuration ParametersFlapping Event Definitions Parameters System Correlation Configuration ParametersImpact Analysis Options Impact AnalysisAffected Severities Impact Report StructureAffected Parties Tab Impact Analysis GUIViewing a Detailed Report For the Affected Pair Detailed Report For the Affected Pair Accumulating Affected Parties Disabling Impact AnalysisUpdating Affected Severity Over Time Accumulating the Affected Parties In an AlarmAccumulating the Affected Parties In the Correlation Tree OL-14284-01 BGP process up Shut down on a device Supported Service AlarmsAll ip interfaces Sent when all IP interfaces True Warnin Shelf Out Link Over Utilized Rx DormantTx Dormant OL-14284-01 Event and Alarm Correlation Flow Figure B-1 Event Correlation Flow VNE level Software Function ArchitectureEvent Correlation Event Correlation FlowEvent Creation VNE level Post-Correlation Rule Event Correlator Alarm Sending Event CorrelatorCorrelation Logic Event Correlator

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