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monitor start



Start displaying the system log or trace file and additional entries being added to those files.



Specific log or trace file.

Additional Information

Log files are generated by the routing protocol process or by system logging. The log files generated by system logging are configured with the syslog statement at the [edit system] hierarchy level and the options statement at the [edit routing-options] hierarchy level. The trace files generated by the routing protocol process are configured with traceoptions statements at the [edit routing-options], [edit interfaces], and [edit protocols protocol] hierarchy levels.


To monitor a log file within a logical system, issue the monitor start logical-system-name/filename command.

Required Privilege Level


Output Fields

Table 1 describes the output fields for the monitor start command. Output fields are listed in the approximate order in which they appear.

Table 1: monitor start Output Fields

Field Name

Field Description

***filename ***

Name of the file from which entries are being displayed. This line is displayed initially and when the command switches between log files.

Date and time

Timestamp for the log entry.

Sample Output

monitor start

Release Information

Command introduced before Junos OS Release 7.4.