Chapter 7 Impact Analysis

Disabling Impact Analysis

Disabling Impact Analysis

You can disable impact analysis for a specific alarm. This option can be set in the Cisco ANA Registry. If impact analysis is disabled the system will report the event with no impact information. The settings can be changed dynamically during system runtime.

The following alarms can be disabled:

Link down

Port down

Dropped or discarded packets

MPLS black hole

BGP neighbor loss

MPLS TE tunnel down

L2 tunnel down

Accumulating Affected Parties

This section describes how NetworkVision automatically calculates the accumulation of affected parties during automatic impact analysis. This information is embedded in the ticket along with all the correlated faults.

In the example below the following types of alarms exist in the correlation tree:

Ticket root-cause alarm (Card out).

An alarm which is correlated to the root cause and has other alarms correlated to it (Link A down).

An alarm with no other alarms correlated to it (Link B down and BGP neighbor loss).

An event sequence is correlated to each of these alarms.

Figure 7-3 Correlation Tree Example

Card out

----- Link A down

------BGP neighbor loss

 

----- Link B down

180110

NetworkVision provides a report of the affected parties for each type of alarm. This report includes the accumulation of:

The affected parties reported on all the events in the alarm event sequence. This also applies to flapping alarms.

The affected parties reported on the alarms that are correlated to it.

Each report includes the accumulation of the affected report of all the events in its own correlation tree.

For example, in the diagram:

BGP neighbor loss includes the accumulation of the affected report of its own event sequence.

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

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Cisco Systems 3.6 specifications Disabling Impact Analysis, Accumulating Affected Parties

3.6 specifications

Cisco Systems 3.6 marks a significant advancement in network technology, presenting an innovative suite of features and capabilities designed to enhance performance, security, and flexibility for modern networks. As a leader in networking solutions, Cisco continues to evolve its offerings, ensuring they meet the demands of businesses operating in increasingly complex environments.

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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.