Dell PowerConnect Brocade M6505 Brocade 7.1.0 Web Tools Administrator's Guide - Page 151
Working with Diagnostic Features, In this Trace dumps
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Chapter Working with Diagnostic Features 9 In this chapter •Trace dumps 123 •Displaying switch information 125 •Defining Switch Policy 128 •Port LED interpretation 130 Trace dumps A trace dump is a snapshot of the running behavior within the Brocade switch. The dump can be used by developers and troubleshooters at Brocade to help understand what might be contributing to a specific switch behavior when certain internal events are seen. For example, a trace dump can be created each time a certain error message is logged to the system error log. Developers can then examine what led up to the message event by studying the traces. Tracing is always "on." As software on the switch executes, the trace information is placed into a circular buffer in system RAM. Periodically, the trace buffer is "frozen" and saved. This saved information is a "trace dump." A trace dump is generated when: • It is triggered manually (use the traceDump command). • A critical-level LOG message occurs. • A particular LOG message occurs (use the traceTrig command to set up the conditions for this). • A kernel panic occurs. • The hardware watchdog timer expires. (For information about the traceDump and traceTrig commands, refer to the Fabric OS Command Reference.) The trace dump is maintained on the switch until either it is uploaded to the FTP host or another trace dump is generated. If another trace dump is generated before the previous one is uploaded, the previous dump is overwritten. When a trace dump is generated, it is automatically uploaded to an FTP host if automatic FTP uploading is enabled. Using the Trace tab of the Switch Administration window, you can view and configure the trace FTP host target and enable or disable automatic trace uploads. Web Tools Administrator's Guide 123 53-1002756-01