Nortel Networks 2300 manual Logging Destinations and Levels

576Appendix A: Troubleshooting a WS Switch

Logging Destinations and Levels

A logging destination is the location to which logged event messages are sent for storage or display. By default, only session logging is disabled. You can enable or disable logging to each destination and filter the messages by the severity of the logged event or condition. (For details, see Table 38.)

System events and conditions at different severity levels can be logged to multiple destinations. By default, events at the error level and higher are posted to the console and to the log buffer. Debug output is logged to the trace buffer by default. Table 37 summarizes the destinations and defaults for system log messages.

Table 37: System Log Destinations and Defaults

Destination	Definition	Default Operation and Severity Level
buffer	Sends log information to the	Buffer is enabled and shows error-level events.
	nonvolatile system buffer.
console	Sends log information to the	Console is enabled and shows error-level events.
	console.
current	Sends log information to the	Settings for the type of session that the user is
	current Telnet or console session.	currently having with the WSS

server	Sends log information to the
ip-address	syslog server at the specified IP
	address.

Server is set during configuration and displays error-level events.

sessions	Sets defaults for Telnet sessions.	Logging is disabled and shows information-level
		events when enabled.
trace	Sends log information to the	Trace is enabled and shows debug output.
	volatile trace buffer.

Specifying a severity level sends log messages for events or conditions at that level or higher to the logging destination. Table 38 lists the severity levels and their descriptions. (For defaults, see Table 37.)

Table 38: Event Severity Levels

Severity	Description
emergency	The WSS switch is unusable.
alert	Action must be taken immediately.
critical	You must resolve the critical conditions. If the conditions are not
	resolved, the WSS can reboot or shut down.
error	The WSS is missing data or is unable to form a connection.
warning	A possible problem exists.
notice	Events that potentially can cause system problems have occurred. These
	are logged for diagnostic purposes. No action is required.

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