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328 Brocade MLX Series and Brocade NetIron XMR Hardware Installation Guide
53-1002373-02
Managing the device
7
Static and dynamic buffers
The software provides a static buffer and a dynamic buffer:
• Static – logs power supply failures, fan failures, and temperature warning or shutdown
messages
• Dynamic – logs all other message types. In previous releases, power supply messages were
displayed in static logs only, with only the last event logged. Beginning with release 03.8.00,
power supply messages are displayed in both static and dynamic logs.
In the static log, new messages replace older ones, so only the most recent message is displayed.
For example, only the most recent temperature warning message will be present in the log. If
multiple temperature warning messages are sent to the log, the latest one replaces the previous
one. The static buffer is not configurable.
The message types that appear in the static buffer do not appear in the dynamic buffer. The
dynamic buffer contains up to the maximum number of messages configured for the buffer (50 by
default), then begins removing the oldest messages (at the bottom of the log) to make room for
new ones.
The static and dynamic buffers are both displayed when you enter the show logging command.
Brocade(config)# show logging
...
Static Log Buffer:
Aug 27 12:42:42:A:Power Supply 6, 1st right, failed
Dynamic Log Buffer (50 lines):
Aug 27 12:19:04:I:Interface ethernet3/4, state up
Aug 27 12:19:04:I:Interface ethernet6/3, state up
Aug 27 12:19:04:I:Interface ethernet3/2, state up
Aug 27 12:19:04:I:Interface ethernet6/1, state up
Aug 27 12:19:00:N:Module up in slot 6
Aug 27 12:19:00:N:Module up in slot 3
Aug 27 12:18:43:I:Warm start
When you clear log entries, you can selectively clear the either buffer, or you can clear both. For
example, to clear only the dynamic buffer, enter the clear logging command at the Privileged EXEC
level.
Brocade# clear logging dynamic-buffer
Syntax: clear logging [dynamic-buffer | static-buffer]
Specify the dynamic-buffer keyword to clear the dynamic buffer, or the static-buffer keyword to
clear the static buffer. If you do not specify a buffer, both buffers are cleared.