Cisco Catalyst 9400 User Manual

CHAPTER 7
Configuring System Message Logs
• Information About Configuring System Message Logs, on page 259
• How to Configure System Message Logs, on page 261
• Monitoring and Maintaining System Message Logs, on page 269
• Configuration Examples for System Message Logs, on page 269
• Additional References for System Message Logs, on page 270
• Feature History for System Message Logs, on page 270
Information About Configuring System Message Logs
System Messsage Logging
By default, a switch sends the output from system messages and debug privileged EXEC commands to a
logging process. . The logging process controls the distribution of logging messages to various destinations,
such as the logging buffer, terminal lines, or a UNIX syslog server, depending on your configuration. The
process also sends messages to the console.
When the logging process is disabled, messages are sent only to the console. The messages are sent as they
are generated, so message and debug output are interspersed with prompts or output from other commands.
Messages appear on the active consoles after the process that generated them has finished.
You can set the severity level of the messages to control the type of messages displayed on the consoles and
each of the destinations. You can time-stamp log messages or set the syslog source address to enhance real-time
debugging and management. For information on possible messages, see the system message guide for this
release.
You can access logged system messages by using the switch command-line interface (CLI) or by saving them
to a properly configured syslog server. The switch software saves syslog messages in an internal buffer on a
standalone switch. If a standalone switch , the log is lost unless you had saved it to flash memory.
You can remotely monitor system messages by viewing the logs on a syslog server or by accessing the switch
through Telnet, through the console port, or through the Ethernet management port.
The syslog format is compatible with 4.3 BSD UNIX.
Note
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
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Cisco Catalyst 9400 Specifications

General

Brand	Cisco
Model	Catalyst 9400
Category	Switch
Language	English