About System Message Logging - Cisco DS-C9216I-K9 Configuration Manual

Configuring System Message Logging
This chapter describes how to configure system message logging on the Cisco MDS 9000 Family
switches.
This chapter contains the following topics:
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About System Message Logging

The system message logging software saves messages in a log file or directs the messages to other
devices. This feature provides you with the following capabilities:
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By default, the switch logs normal but significant system messages to a log file and sends these messages
to the system console. You can specify which system messages should be saved based on the type of
facility and the severity level. Messages are time-stamped to enhance real-time debugging and
management.
You can access logged system messages using the CLI or by saving them to a properly configured syslog
server. The switch software saves syslog messages in a file that can be configured to save up to 4 MB.
You can monitor system messages remotely by accessing the switch through Telnet, SSH, or the console
port, or by viewing the logs on a syslog server.
When the switch first initializes, the network is not connected until initialization completes. Therefore,
messages are not redirected to a syslog server for a few seconds.
Log messages are not saved across system reboots. However, a maximum of 100 log messages with a
severity level of critical and below (levels 0, 1, and 2) are saved in NVRAM.
Table 28-1
OL-7753-01
About System Message Logging, page 28-1
Configuring System Message Logging, page 28-3
Default Settings, page 28-6
About SNMP Events, page 28-7
About RMON Facilities, page 28-8
Provides logging information for monitoring and troubleshooting
Allows you to select the types of captured logging information.
Allows you to select the destination of the captured logging information.
describes the facilities supported by the system message logs.
C H A P T E R
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
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