Cisco Catalyst 3560-X Series, Руководство по настройке программного обеспечения

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C H A P T E R
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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
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Configuring System Message Logging and Smart
Logging
This chapter describes how to configure system message logging on the Catalyst 3750-X or 3560-X
switch. The switch also supports Smart Logging to capture packet flows based on configured triggers.
Note
For complete syntax and usage information for the commands used in this chapter, see the Cisco IOS
Configuration Fundamentals Command Reference, Release 12.4 and the command reference for this
release.
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Understanding System Message Logging, page 1-1
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Configuring System Message Logging, page 1-2
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Configuring Smart Logging, page 1-14
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Displaying the Logging Configuration, page 1-17
Caution
Logging messages to the console at a high rate can cause high CPU utilization and adversely affect how
the switch operates.
Understanding System Message Logging
By default, a switch sends the output from system messages and debug privileged EXEC commands to
a logging process. Stack members can trigger system messages. A stack member that generates a system
message appends its hostname in the form of
hostname-n , where n is a switch number from 1 to 9, and
redirects the output to the logging process on the stack master. Though the stack master is a stack
member, it does
not append its hostname to system messages. 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.
Note
The syslog format is compatible with 4.3 BSD UNIX.