Syslog; About Syslog Messages - Brocade Communications Systems FastIron Administration Manual

Syslog

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About Syslog messages................................................................................................285

● Displaying Syslog messages........................................................................................ 286
● Syslog service configuration......................................................................................... 287
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
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.
FastIron Ethernet Switch Administration Guide
53-1003625-01
on page 293.
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