Cisco Systems 3560 Manual De Usuario

This chapter describes how to configure system message logging on the Catalyst 3560 switch.

For complete syntax and usage information for the commands used in this chapter, see the Cisco IOS 
Configuration Fundamentals Command Reference, Release 12.2 from the Cisco.com page under 
Documentation > Cisco IOS Software > 12.2 Mainline > Command References.

This chapter consists of these sections:

Logging messages to the console at a high rate can cause high CPU utilization and adversely affect how 
the switch operates. 

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. 

The syslog format is compatible with 4.3 BSD UNIX.

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 console 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.