By default, a switch does not generate events of severity Debug-Summary,
Debug-Verbose, and Debug-Data unless the switch is in debug mode. Debug mode causes a
performance penalty, so it should only be enabled for specific cases where it is
needed.
Place the switch in debug mode using the command:
enable log
debug-mode
When the switch is in debug-mode, any
filters configured for your targets still affect which messages are passed on or
blocked.