Chapter 37 Configuring System Message Logging; Understanding How System Message Logging Works - Cisco WS-C2948G-GE-TX Configuration Manual

Configuring System Message Logging
This chapter describes how to configure system message logging on the Catalyst enterprise LAN
switches.
Note For complete syntax and usage information for the commands that are used in this chapter, refer to the
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Command
Reference.
This chapter consists of these sections:
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Understanding How System Message Logging Works

The system message logging software can save messages in a log file or direct the messages to other
devices. With the system message logging facility, you can do the following:
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By default, the switch logs normal but significant system messages to its internal buffer and sends these
messages to the system console. You can specify which system messages should be saved based on the
type of facility (see
enhance real-time debugging and management.
You can access logged system messages using the switch CLI or by saving them to a properly configured
syslog server. The switch software saves syslog messages in an internal buffer that can store up to
1024 messages. You can monitor system messages remotely by accessing the switch through Telnet or
the console port, or by viewing the logs on a syslog server.
Note When the switch first initializes, the network is not connected until the initialization completes.
Messages that are redirected to a syslog server are delayed up to 90 seconds.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
78-15908-01
Understanding How System Message Logging Works, page 37-1
Default System Message Logging Configuration, page 37-3
System Log Message Format, page 37-4
Configuring System Message Logging on the Switch, page 37-4
Get logging information for monitoring and troubleshooting
Select the types of captured logging information
Select the destination of captured logging information
Table 37-1) and the severity level (see
C H A P T E R
Table 37-3). Messages are time-stamped to
37
37-1