Brocade FastIron Ethernet Switch Administration Guide - Manual (Page 218)

This chapter describes how to display Syslog messages and how to configure the Syslog facility, and
lists the Syslog messages that Brocade devices can display during standard operation.
About Syslog messages
Brocade software can write syslog messages to provide information at the following severity levels:
• Emergencies
• Alerts
• Critical
• Errors
• Warnings
• Notifications
• Informational
• Debugging
The device writes the messages to a local buffer.
You also can specify the IP address or host name of up to six Syslog servers. When you specify a
Syslog server, the Brocade device writes the messages both to the system log and to the Syslog
server.
Using a Syslog server ensures that the messages remain available even after a system reload. The
Brocade local Syslog buffer is cleared during a system reload or reboot, but the Syslog messages sent
to the Syslog server remain on the server.
NOTE
To enable the Brocade device to retain Syslog messages after a soft reboot (reload command). Refer
to
Retaining Syslog messages after a soft reboot on page 226.
The Syslog service on a Syslog server receives logging messages from applications on the local host
or from devices such as a Layer 2 Switch or Layer 3 Switch. Syslog adds a time stamp to each
received message and directs messages to a log file. Most Unix workstations come with Syslog
configured. Some third party vendor products also provide Syslog running on NT.
Syslog uses UDP port 514 and each Syslog message thus is sent with destination port 514. Each
Syslog message is one line with Syslog message format. The message is embedded in the text
portion of the Syslog format. There are several subfields in the format. Keywords are used to identify
each subfield, and commas are delimiters. The subfield order is insensitive except that the text
subfield should be the last field in the message. All the subfields are optional.
Displaying Syslog messages
To display the Syslog messages in the device local buffer, enter the show logging command at any
level of the CLI. The following shows an example display output.
device>#show logging
Syslog logging: enabled (0 messages dropped, 0 flushes, 0 overruns)
Buffer logging: level ACDMEINW, 3 messages logged
level code: A=alert C=critical D=debugging M=emergency E=error
I=informational N=notification W=warning
Static Log Buffer:
Dec 15 19:04:14:A:Fan 1, fan on right connector, failed
About Syslog messages
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