Cisco Systems 3.6 specifications Interface Example

Page 30

Chapter 4 Advanced Correlation Scenarios

IP Interface Failure Scenarios

Interface Example 1

In this example there is multipoint connectivity between a PE and number of CEs through an unmanaged Frame Relay network. All the CEs (Router2 and Router3) have logical connectivity to the PE through a multipoint subinterface on the PE (Router10). The keep alive option is enabled for all circuits. A link is disconnected inside the unmanaged network that causes all the CEs to become unreachable.

Figure 4-3 Interface Example 1

unreachable

interface Serial0/0.100

Multipoint

 

connectivity

 

Router2

 

point-to-point

 

 

 

10.222.1.2

 

 

10.200.1.2

 

 

 

 

 

 

 

 

interface Serial0/0.55

 

 

 

multipoint

 

 

Frame-Relay

10.200.1.10

 

 

cloud

 

unreachable

 

 

multipiont

Router2

 

 

IP interface

10.222.1.3

 

 

State "down"

 

interface Serial0/0.101

 

 

 

point-to-point

 

 

 

10.200.1.3

 

 

Router10

10.222.1.10

180434

The following failures are identified in the network:

•A device unreachable alarm is generated for each CE.

•An ip interface status down alarm is generated for the multipoint IP interface on the PE. The following correlation information is provided:

•The root cause is IP subinterface down.

•All the device unreachable alarms are correlated to the ip interface status down alarm on the PE.

Interface Example 2

In this example there is point-to-point connectivity between a PE and a CE through an unmanaged Frame Relay network. CE1 became unreachable, and the status of the IP interface on the other side (on the PE1) changed state to down. The “keep alive” option is enabled. The interface is shut down between the unmanaged network and CE1.

Figure 4-4

 

Interface Example 2

 

 

unreachable

interface Serial1/0.500

Point-to-point

 

 

connectivity

 

Routing Protocol

CE1

 

 

point-to-point

 

 

 

 

neighbor down syslog

60.60.60.4

 

 

 

 

102.0.0.2

 

 

 

 

 

(BGF, OSPF)

 

 

 

 

 

 

 

 

 

 

 

 

 

interface Serial1/0.100

Point-to-point

 

 

point-to-point

 

 

Frame-Relay

102.0.0.1

PE1

IP interface

 

 

 

State unknown

cloud

Point-to-point

80.80.80.69

 

 

 

 

 

 

 

 

 

IP interface

180435

 

 

 

 

State "down"

 

 

 

 

 

The following failures are identified in the network:

•A device unreachable alarm is generated on the CE.

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

4-6

OL-14284-01

 

 

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Contents Americas Headquarters Page N T E N T S Multi Route Correlation Cloud VNE Alarm Sending Event Correlator About This Guide ViiViii Fault Management Overview Managing EventsAlarm Basic Concepts and TermsEvent Event SequenceRepeating Event Sequence Flapping EventsCorrelation By Root Cause TicketSeverity Propagation Sequence Association and Root Cause AnalysisEvent Processing Overview OL-14284-01 Fault Detection and Isolation Unreachable Network ElementsVNE Sources of Alarms On a Device Alarm IntegrityIntegrity Service Fault Detection and Isolation Integrity Service Event Suppression Cisco ANA Event Correlation and SuppressionRoot-Cause Correlation Process Cisco ANACorrelation by Key Root-Cause AlarmsCorrelation Flows Correlation by FlowUsing Weights DC Model Correlation CacheCorrelating TCA Device Unreachable Alarm Advanced Correlation ScenariosConnectivity Test Device Fault Identification Device Unreachable ExampleIP Interface Status Down Alarm IP Interface Failure ScenariosCorrelation of Syslogs and Traps All IP Interfaces Down Alarm IP Interface Failure ExamplesInterface Example 10.200.1.2 General Interface Example ATM Examples Ethernet, Fast Ethernet, Giga Ethernet ExamplesInterface Registry Parameters Ip interface status down ParametersMulti Route Correlation Multi Route Correlation Example11 Multi Route Correlation Example GRE Tunnel Down/Up Alarm Generic Routing Encapsulation GRE Tunnel Down/UpGRE Tunnel Down Correlation Example 14 GRE Tunnel Down Example 1 Single GRE Tunnel15 GRE Tunnel Down Example 2 Multiple GRE Tunnels 16 Alarms Correlation to GRE Tunnel Down Ticket BGP Process Down Alarm Mpls Interface Removed AlarmLDP Neighbor Down Alarm OL-14284-01 Correlation Over Unmanaged Segments Cloud VNETypes of Unmanaged Networks Supported Supported When Logical Inventory Physical Inventory Cloud Problem Alarm Cloud Correlation ExampleOL-14284-01 Event and Alarm Configuration Parameters Alarm Type DefinitionEvent Sub-Type Configuration Parameters Root Cause Configuration ParametersGeneral Event Parameters Correlation Configuration Parameters Network Correlation ParametersSystem Correlation Configuration Parameters Flapping Event Definitions ParametersImpact Analysis Impact Analysis OptionsImpact Report Structure Affected SeveritiesImpact Analysis GUI Affected Parties TabViewing a Detailed Report For the Affected Pair Detailed Report For the Affected Pair Disabling Impact Analysis Accumulating Affected PartiesAccumulating the Affected Parties In an Alarm Accumulating the Affected Parties In the Correlation TreeUpdating Affected Severity Over Time OL-14284-01 Supported Service Alarms BGP process up Shut down on a deviceAll ip interfaces Sent when all IP interfaces True Warnin Shelf Out Rx Dormant Tx DormantLink Over Utilized OL-14284-01 Event and Alarm Correlation Flow Software Function Architecture Figure B-1 Event Correlation Flow VNE levelEvent Correlation Flow Event Creation VNE levelEvent Correlation Alarm Sending Event Correlator Correlation Logic Event CorrelatorPost-Correlation Rule Event Correlator
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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.

One of the standout features of Cisco Systems 3.6 is the introduction of enhanced automation capabilities. Automation reduces the manual effort required for network management, allowing IT teams to focus on strategic initiatives rather than routine maintenance. The system leverages advanced machine learning algorithms to analyze network behavior, detect anomalies, and suggest optimizations, which enhances operational efficiency and uptime.

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Another notable characteristic is improved compatibility with cloud environments. With the rise of hybrid cloud models, Cisco Systems 3.6 offers seamless integration capabilities that enable businesses to connect their on-premises networks with public and private cloud infrastructures. This ensures greater flexibility and enhanced performance for cloud-based applications.

Cisco also emphasizes software-defined networking (SDN) with its updated platform. This approach allows for greater agility, enabling network administrators to programmatically manage resources through a centralized interface. SDN facilitates rapid deployment of services and applications, optimizing the overall user experience.

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Furthermore, energy efficiency is a core aspect of Cisco Systems 3.6. The system is designed to optimize power consumption and reduce overall operating costs, aligning with global sustainability goals. The efficient design prioritizes environmentally friendly practices while still delivering high performance.

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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