Chapter 4 Advanced Correlation Scenarios

IP Interface Failure Scenarios

Figure 4-2

ANA Unit

Device Unreachable Example 2

L1

SW1

 

L2

R1

 

 

 

L3

L4

Physical links

R2

SW2

 

 

Management connectivity

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Note If the device has a single link and it is being managed through that link (in-band management), there is no way to determine if the device is unreachable due to a link down, or the link is down because the device is unreachable. In this case, Cisco ANA shows that the device is unreachable due to link down.

In this case the system will provide the following report:

Root cause—Device Unreachable (R1)

Correlated events:

L2 down

Device Unreachable (R2)

L4 down

IP Interface Failure Scenarios

This section includes:

IP Interface Status Down Alarm

All IP Interfaces Down Alarm

IP Interface Failure Examples

IP Interface Status Down Alarm

Alarms related to subinterfaces, for example, line-down trap, line-down syslog, and so on, are reported on IP interfaces configured above the relevant subinterface. This means that in the system, subinterfaces are represented by the IP interfaces configured above them. All events sourcing from subinterfaces without a configured IP are reported on the underlying Layer 1.

An “ip interface status down” alarm is generated when the status of the IP interfaces (whether it is over an interface or a subinterface) changes from up to down or any other non-operational state. All events sourced from the subinterfaces correlate to this alarm. In addition an “All ip interfaces down” alarm is generated when all the IP interfaces above a physical port change state to down.

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

 

OL-14284-01

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Cisco Systems 3.6 specifications IP Interface Failure Scenarios, IP Interface Status Down Alarm

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.