Brocade Communications Systems 6650 manual About Syslog messages, Displaying Syslog messages

10 About Syslog messages

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 ICX 6650 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 ICX 6650 device to retain Syslog messages after a soft reboot (reload command). Refer to “Retaining Syslog messages after a soft reboot” on page 242.

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.

Brocade>#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

232	Brocade ICX 6650 Administration Guide
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