Configuring Unix Syslog Servers - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring System Message Logging
To change the level and history table size defaults, perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# logging history level
Step 3
Switch(config)# logging history size number
Step 4
Switch(config)# end
Step 5
Switch# show running-config
Step 6
Switch# copy running-config startup-config
1. Table 70-3 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.
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.

Configuring UNIX Syslog Servers

The next sections describe how to configure the UNIX server syslog daemon and how to define the UNIX
system logging facility.
Logging Messages to a UNIX Syslog Daemon
Before you can send system log messages to a UNIX syslog server, you must configure the syslog
daemon on a UNIX server. This procedure is optional.
Some recent versions of UNIX syslog daemons no longer accept by default syslog packets from the
Note
network. If applies to your system, use the UNIX man syslogd command to decide what options must
be added to or removed from the syslog command line to enable logging of remote syslog messages.
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
70-10
Purpose
Enters global configuration mode.
1
Changes the default level of syslog messages stored in
the history file and sent to the SNMP server.
See Table 70-3 on page 70-8
keywords.
By default, warnings, errors, critical, alerts, and
emergencies messages are sent.
Specifies 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.
Returns to privileged EXEC mode.
Verifies your entries.
(Optional) Saves your entries in the configuration file.
Chapter 70 Configuring System Message Logging
for a list of level