1214 | E-Series TeraScale Debugging and Diagnostics
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Trace logs
In addition to the syslog buffer, FTOS buffers trace messages which are continuously written by various
FTOS software tasks to report hardware and software events and status information. Each trace message
provides the date, time, and name of the FTOS process. All messages are stored in a ring buffer and can be
saved to a file either manually or automatically upon failover.
Some trace files are automatically saved and stored in the
flash:/TRACE_LOG_DIR directory for SW and
HW Traces of the CP and for all Linecards. This directory contains the
TRACE_CURR_BOOT file which
in turn contains the saved trace buffer files.
The
TRACE_LOG_DIR/TRACE_CURR_BOOT files can be reached by FTP or by using the show file
command from the flash://TRACE_LOG_DIR directory.
Buffer full condition
When the Trace Ring Buffer fills up, trace logs are saved into the flash so the buffer can be clear for further
trace activity. The saved file is named hw_trace_RPM0CP.0, for example. If the buffer fills a second time,
a second file is created as hw_trace_RPM0CP.1 and saved to the flash. Following the fifth file created
(hw_trace_RPM0CP.4), the saved files are overwritten starting with the .1 version (hw_trace_RPM0CP.1).
These files will be saved in
flash:/TRACE_LOG_DIR/TRACE_CURR_BOOT. At reload this directory is
renamed as
flash:/TRACE_LOG_DIR/TRACE_LAST_BOOT and an empty flash:/TRACE_LOG_DIR/
TRACE_CURR_BOOT
directory is created.
Trace file hw_trace_RPM0CP.0 is not overwritten so that chassis bootup message are preserved.
The CP and LP trace file names are:
• CP [SW trace] : sw_trace_RPM0CP.0, sw_trace_RPM0CP.1, sw_trace_RPM0CP.2,
sw_trace_RPM0CP.3 and sw_trace_RPM0CP.4
• CP [HW trace] : hw_trace_RPM0CP.0, hw_trace_RPM0CP.1, hw_trace_RPM0CP.2,
hw_trace_RPM0CP.3 and hw_trace_RPM0CP.4
• LP [SW trace] : sw_trace_LPX.0, sw_trace_LP1.1, sw_trace_LP1.2, sw_trace_LP1.3 and
sw_trace_LP1.4
• LP [HW trace] : hw_trace_LPX.0, hw_trace_LP1.1, hw_trace_LP1.2, hw_trace_LP1.3 and
hw_trace_LP1.4
Trace files are saved in the directory
flash:/TRACE_LOG_DIR/TRACE_CURR_BOOT. Upon a system reload
this directory is renamed
flash:/TRACE_LOG_DIR/TRACE_LAST_BOOT, and an empty flash:/
TRACE_LOG_DIR/TRACE_CURR_BOOT
directory is created.
Note: At reload this directory is renamed to flash:/TRACE_LOG_DIR/TRACE_LAST_BOOT and a new
empty flash:/TRACE_LOG_DIR/TRACE_CURR_BOOT directory is created.
Note: Line card 1 is taken as the example for the following filenames.
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