Cisco Catalyst 3750-E - Configuring the Unix System Logging Facility

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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
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Chapter 32 Configuring System Message Logging
Configuring System Message Logging
Log in as root, and perform these steps:
Note Some recent versions of UNIX syslog daemons no longer accept by default syslog packets from the
network. If this is the case with 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.
Step 1 Add a line such as the following to the file /etc/syslog.conf:
local7.debug /usr/adm/logs/cisco.log
The lo
cal7 keyword specifies the logging facility to be used; see Table 32-4 on page 32-14 for
information on the facilities. The deb
ug keyword specifies the syslog level; see Table 32-3 on
page 32-10 for information on the severity levels. The syslog daemon sends messages at this level or at
a more severe level to the file specified in the next field. The file must already exist, and the syslog
da
emon must have permission to write to it.
Step 2 Create the log file by entering these commands at the UNIX shell prompt:
$ touch /var/log/cisco.log
$ chmod 666 /var/log/cisco.log
Step 3 Make sure the syslog daemon reads the new changes:
$ kill -HUP `cat /etc/syslog.pid`
For more information, see the man syslog.conf and man syslogd commands on your UNIX system.
Configuring the UNIX System Logging Facility
When sending system log messages to an external device, you can cause the switch to identify its
messages as originating from any of the UNIX syslog facilities.
Beginning in privileged EXEC mode, follow these steps to configure UNIX system facility message
l
ogging. This procedure is optional.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
logging host Log messages to a UNIX syslog server host by entering its IP address.
To build a list of syslog servers that receive logging messages, enter this
co
mmand more than once.
Step 3
logging trap level Limit messages logged to the syslog servers.
Be default, syslog servers receive informational messages and lower. See
Table 32-3 on page 32-10 for le
vel keywords.
Step 4
logging facility facility-type Configure the syslog facility. See Table 32-4 on page 32-14 for
facility-type k
eywords.
The default is lo
cal7.
Step 5
end Return to privileged EXEC mode.