user manual
Table Of Contents
- Cisco Active Network Abstraction Fault Management User Guide Version 3.6 Service Pack 1
- Contents
- About This Guide
- Fault Management Overview
- Fault Detection and Isolation
- CiscoANA Event Correlation and Suppression
- Advanced Correlation Scenarios
- Device Unreachable Alarm
- IP Interface Failure Scenarios
- Multi Route Correlation
- Generic Routing Encapsulation (GRE) Tunnel Down/Up
- BGP Process Down Alarm
- MPLS Interface Removed Alarm
- LDP Neighbor Down Alarm
- Correlation Over Unmanaged Segments
- Event and Alarm Configuration Parameters
- Impact Analysis
- Supported Service Alarms
- Event and Alarm Correlation Flow
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Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1
OL-14284-01
Chapter 1 Fault Management Overview
Basic Concepts and Terms
Figure 1-4 Flapping Event
Correlation By Root Cause
Root cause correlation is determined between alarms or event sequences. It represents a causal
relationship between an alarm and the consequent alarms that occurred because of it.
For example, a card-out alarm can be the root cause of several link-down alarms, which in turn can be
the root cause of multiple route-lost and device unreachable alarms, and so on. A consequent alarm can
serve as the root cause of other consequent alarms.
Figure 1-5 Root Cause Correlation Hierarchy Example
Ticket
A ticket represents the complete alarm correlation tree of a specific fault scenario. It can be also
identified by the topmost or “root of all roots” alarm. Both Cisco ANA NetworkVision and Cisco ANA
EventVision display tickets and allow drilling down to view the consequent alarm hierarchy.