Chapter 4 Advanced Correlation Scenarios

IP Interface Failure Scenarios

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

The root cause is device unreachable:

The ip interface status down alarm is correlated to the device unreachable alarm.

The syslogs and traps for the related subinterfaces are correlated to the ip interface status down alarm.

Interface Example 3

In this example there is a failure of multiple IP interfaces above the same physical port (mixed point-to-point and multipoint Frame Relay connectivity). CE1 (Router2) has a point-to-point connection to PE1 (Router10). CE1 and CE2 (Router3) have multipoint connections to PE1. The IP interfaces on PE1 that are connected to CE1, and CE2 are all configured above Serial0/0. The “keep alive” option is enabled. A link is disconnected inside the unmanaged network that has caused all the CEs to become unreachable.

Figure 4-5 Interface Example 3

unreachable

interface Serial0/0.100

Router2

point-to-point

10.222.1.2

10.200.1.2

 

 

interface Serial0/0.101

 

point-to-point

unreachable

10.200.1.3

Router2

 

10.222.1.3

 

 

interface Serial0/0.100

 

point-to-point

 

10.200.3.3

Mixed Multipoint and

Point-to-point

connectivity

 

interface Serial0/0.55

 

 

 

multipoint

 

 

Frame-Relay

10.200.1.10

Router10

 

cloud

 

10.222.1.10

 

interface Serial0/0.100

 

 

 

point-to-point

 

 

 

10.200.3.10

 

 

 

All IP interface

180436

 

state to "down"

 

above Serial0/0 change

 

The following failures are identified in the network:

All the CEs become unreachable.

An ip interface status down alarm is generated for each IP interface above Serial0/0 that has failed. The following correlation information is provided:

The root cause is All IP interfaces down on Serial0/0 port:

The ip interface status down alarms are correlated to the All IP interfaces down alarm.

The device unreachable alarms are correlated to the All IP interfaces down alarm.

The syslogs and traps for the related subinterfaces are correlated to the All IP interfaces down alarm.

Interface Example 4

In this example there is a link down. In a situation where a link down occurs, whether it involves a cloud or not, the link failure is considered to be the most probable root cause for any other failures. In this example, a link is disconnected between the unmanaged network and the PE.

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

 

OL-14284-01

4-7

 

 

 

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Cisco Systems 3.6 specifications 10.200.1.2

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 terms of security, Cisco Systems 3.6 integrates robust cybersecurity measures directly into its architecture. It incorporates Cisco's SecureX framework, which provides centralized visibility and control across the entire security stack. This feature allows organizations to respond rapidly to threats, leveraging threat intelligence and automated response mechanisms to mitigate risks effectively.

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Cisco Systems 3.6 also boasts enhanced collaboration tools, fostering improved communication across teams. Featuring advanced video conferencing and messaging capabilities, it enhances productivity and streamlines processes, regardless of employee location. These tools are designed to support remote work environments, which have become increasingly important in today's business landscape.

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.