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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring System Message Logging and Smart Logging
Configuring System Message Logging
Beginning in privileged EXEC mode, follow these steps to change the level and history table size
defaults. This procedure is optional.
When the history table is full (it contains the maximum number of message entries specified with the
logging history size global configuration command), the oldest message entry is deleted from the table
to allow the new message entry to be stored.
To return the logging of syslog messages to the default level, use the no logging history global
configuration command. To return the number of messages in the history table to the default value, use
the no logging history size global configuration command.
Enabling the Configuration-Change Logger
You can enable a configuration logger to keep track of configuration changes made with the
command-line interface (CLI). When you enter the logging enable configuration-change logger
configuration command, the log records the session, the user, and the command that was entered to
change the configuration. You can configure the size of the configuration log from 1 to 1000 entries (the
default is 100). You can clear the log at any time by entering the no logging enable command followed
by the logging enable command to disable and re-enable logging.
Use the show archive log config {all | number [end-number] | user username [session number] number
[end-number] | statistics} [provisioning] privileged EXEC command to display the complete
configuration log or the log for specified parameters.
The default is that configuration logging is disabled.
For information about the commands, see the Cisco IOS Configuration Fundamentals and Network
Management Command Reference, Release 12.3 T.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
logging history level
1
1. Table 1-3 lists the level keywords and severity level. For SNMP usage, the severity level values increase by 1. For example, emergencies equal
1, not 0, and critical equals 3, not 2.
Change the default level of syslog messages stored in the history file and
sent to the SNMP server.
See Table 1-3 on page 1-10 for a list of level keywords.
By default, warnings, errors, critical, alerts, and emergencies messages
are sent.
Step 3
logging history size number Specify the number of syslog messages that can be stored in the history
table.
The default is to store one message. The range is 0 to 500 messages.
Step 4
end Return to privileged EXEC mode.
Step 5
show running-config Verify your entries.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
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