Chapter 4 Configuring Additional Router Features

Configuring Logging and Logging Correlation

F I N A L D R A F T — C i s c o C o n f i d e n t i a l

Configuring Logging and Logging Correlation

System messages generated by the Cisco IOS XR software can be logged to a variety of locations based on the severity level of the messages. For example, you could direct information messages to the system console and also log debugging messages to a network server.

In addition, you can define correlation rules that group and summarize related events, generate complex queries for the list of logged events, and retrieve logging events through an XML interface.

The following sections describe logging and the basic commands used to log messages in

Cisco IOS XR software:

•Logging Locations and Severity Levels, page 4-12

•Alarm Logging Correlation, page 4-13

•Configuring Basic Message Logging, page 4-13

•Disabling Console Logging, page 4-15

Logging Locations and Severity Levels

Error messages can be logged to a variety of locations, as shown in Table 4-1.

Table 4-1

Logging Locations for System Error Messages

 

 

Logging Destination

Command (Global Configuration Mode)

 

 

 

console

 

logging console

 

 

 

vty terminal

 

logging monitor

 

 

external syslog server

logging trap

 

 

 

internal buffer

 

logging buffered

 

 

 

You can log messages based on the severity level of the messages, as shown in Table 4-2.

Table 4-2

Logging Severity Levels for System Error Messages

 

 

 

Level

 

Description

 

 

Level 0—Emergencies

System has become unusable.

 

 

Level 1—Alerts

Immediate action needed to restore system stability.

 

 

Level 2—Critical

Critical conditions that may require attention.

 

 

Level 3—Errors

Error conditions that may help track problems.

 

 

Level 4—Warnings

Warning conditions that are not severe.

 

 

Level 5—Notifications

Normal but significant conditions that bear notification.

 

 

Level 6—Informational

Informational messages that do not require action.

 

 

Level 7—Debugging

Debugging messages are for system troubleshooting only.

 

 

 

 

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Cisco Systems A9K24X10GETR, ASR 9000 Configuring Logging and Logging Correlation, Logging Locations and Severity Levels
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A9KMOD80TR, A9K24X10GETR, ASR 9000 specifications

Cisco Systems has long been a leader in networking technology, providing cutting-edge solutions for service providers and enterprise organizations alike. Among their standout products is the Cisco ASR 9000 Series Aggregation Services Routers, notably the A9K24X10GETR and the A9KMOD80TR models. These routers are engineered to deliver unmatched performance, scalability, and versatility for networks that require high bandwidth and low latency.

The Cisco ASR 9000 Series is built for the needs of today's complex service provider and enterprise networks. A significant feature of the A9K24X10GETR is its 24-port 10-Gigabit Ethernet module. This functionality allows for high-density connectivity, making it ideal for aggregating numerous connections to different parts of a network while maintaining optimal performance. Whether used for Internet service providers delivering high-speed connectivity or for enterprises looking to connect multiple branches, the A9K24X10GETR provides robust and reliable data transmission.

Further enhancing the capabilities of the ASR 9000 is the A9KMOD80TR module, which supports an extensive range of services. This module is designed to run a variety of technologies, including Layer 2 and Layer 3 services, MPLS (Multiprotocol Label Switching), and IPv6. Its ability to integrate seamlessly into existing infrastructures while providing the advanced features customers demand makes it an invaluable asset for network engineering teams.

Another cutting-edge technology present in the ASR 9000 Series is its support for eBGP (External Border Gateway Protocol), which plays a critical role in managing traffic across multiple networks. The routers are equipped with advanced telemetry features, empowering operators with real-time insights into network performance and health. Additionally, they come with integrated security features that protect against DDoS threats and other vulnerabilities.

In summary, Cisco's ASR 9000 Series, particularly the A9K24X10GETR and A9KMOD80TR, combines high-density connections, extensive service support, and advanced security and telemetry capabilities. These routers are perfect for demanding environments where reliable performance and adaptability are crucial. With their focus on innovation and performance, Cisco continues to shape the future of networking technology.
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