logging logfile

To configure the name of the log file used to store system messages and the minimum severity level to log, use the logging logfile command. To disable logging to the log file, use the no form of this command.

logging logfile logfile-name severity-level [ size bytes ]

no logging logfile [ logfile-name severity-level [ size bytes ]]]

Syntax Description

Name of the log file to be used to store system messages.
Number of the desired severity level at which messages should be logged. Messages at or numerically lower than the specified level are logged. Severity levels are as follows:
  • 0 —emergency: System unusable
  • 1 —alert: Immediate action needed
  • 2 —critical: Critical condition—default level
  • 3 —error: Error condition
  • 4 —warning: Warning condition
  • 5 —notification: Normal but significant condition
  • 6 —informational: Informational message only
  • 7 —debugging: Appears during debugging only
size bytes
(Optional) Specifies a maximum file size. The default file size is 4194304 bytes and can be configured from 4096 to 4194304 bytes.

Command Default


Command Modes

Global configuration mode

Command History

This command was introduced.


This example shows how to configure a log file called logfile to store system messages and set its severity level to 4:

switch(config)# logging logfile logfile 4

Related Commands

show logging logfile
Displays the log file.