Table 3: Log Severity Descriptions; Log Verbosity; Persistent Logs - Juniper JUNOSE SOFTWARE 11.2.X - SYSTEM EVENT LOGGING REFERENCE GUIDE 6-29-2010 Reference Manual

JunosE 11.2.x System Event Logging Reference Guide

Log Verbosity

Persistent Logs

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NOTE: Not every event category supports every severity level. For a list of event
categories and the severity levels that each category supports, see "Event Categories"
on page 21.

Table 3: Log Severity Descriptions

Severity Number Severity Name
0 Emergency
1 Alert
2 Critical
3 Error
4 Warning
5 Notice
6 Info
7 Debug
The verbosity level determines the amount of information that appears in each message.
You can assign the verbosity level for the log category. Verbosity levels can be any of the
following:
Low—Terse
Medium—Moderate
High—Verbose
NOTE: Many event categories provide only low-verbosity detail regardless of the
verbosity setting.
Log messages can survive a system reboot. After a reboot, the system rebuilds the list
of log messages. However, if the system detects any problems or has gone through a
power cycle, the buffer is reset, and the log messages from the previous session are lost.
System Response
System unusable; shelf reset
Immediate action needed; card reset
Critical conditions exist; interface is down
Error conditions; nonrecoverable software error
Warning conditions; recoverable software error
Normal but significant conditions; nonerror,
low-verbosity information
Informational messages; nonerror, medium-verbosity
information
Debug messages; nonerror, high-verbosity information
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