Configuring Logging And Logging Correlation; Logging Locations And Severity Levels - Cisco Router IOS XR Getting Started Manual

Chapter 5 Configuring Additional Router Features
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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:
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Logging Locations and Severity Levels

Error messages can be logged to a variety of locations, as shown in
Table 5-1
Logging Destination
console
vty terminal
external syslog server
internal buffer
You can log messages based on the severity level of the messages, as shown in
Table 5-2
Level
Level 0—Emergencies
Level 1—Alerts
Level 2—Critical
Level 3—Errors
Level 4—Warnings
Level 5—Notifications
Level 6—Informational
Level 7—Debugging
OL-10957-02
Logging Locations and Severity Levels, page 5-9
Alarm Logging Correlation, page 5-10
Configuring Basic Message Logging, page 5-10
Logging Locations for System Error Messages
Logging Severity Levels for System Error Messages
Command (Global Configuration Mode)
logging console
logging monitor
logging trap
logging buffered
Description
System has become unusable.
Immediate action needed to restore system stability.
Critical conditions that may require attention.
Error conditions that may help track problems.
Warning conditions that are not severe.
Normal but significant conditions that bear notification.
Informational messages that do not require action.
Debugging messages are for system troubleshooting only.
Cisco IOS XR Getting Started Guide

Configuring Logging and Logging Correlation

Table 5-1.
Table 5-2.
5-9