Using Syslog - HP ProCurve 9304M Installation And Configuration Manual

Routing switches
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This appendix describes how to display Syslog messages and how to configure the Syslog facility, and lists the
Syslog messages that an HP Routing Switch can display during standard operation.
NOTE: This appendix does not list Syslog messages that can be displayed when a debug option is enabled. For
information about Syslog messages that are displayed by a debug option, see the Diagnostics Guide .
Overview
An HP device's 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. In software release earlier than 07.6.04, the local buffer can hold
up to 100 entries. Beginning with software release 07.6.04, the buffer can hold up to 1000 entries.
You also can specify the IP address or host name of up to six Syslog servers. When you specify a Syslog server,
the HP 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 HP device's
local Syslog buffer is cleared during a system reload or reboot, but the Syslog messages sent to the Syslog server
remain on the server.
The Syslog service on a Syslog server receives logging messages from applications on the local host or from
devices such as a Routing 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
Appendix A

Using Syslog

A - 1

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