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Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter47 Troubleshooting Using On-Board Failure Logging
file is created, you can use the rename privileged EXEC command to rename it, but the contents of the
renamed file will not be displayed by the show stacks or the show tech-support privileged EXEC
command. You can delete crashinfo files by using the delete privileged EXEC command.
You can display the most recent basic crashinfo file (that is, the file with the highest sequence number
at the end of its filename) by entering the show stacks or the show tech-support privileged EXEC
command. You also can access the file by using any command that can copy or display files, such as the
more or the copy privileged EXEC command.

Extended crashinfo Files

The switch creates the extended crashinfo file when the system is failing. The information in the
extended file includes additional information that can help determine the cause of the sw itch failure. You
provide this information to the Cisco technical support representative by manually accessing the file and
using the more or the copy privileged EXEC command.
Extended crashinfo files are kept in this directory on the fla sh file syste m:
flash:/crashinfo_ext/.
The filenames are crashinfo_ext_n where n is a sequence number.
You can configure the switch to not create the extended creashinfo file by using the no exception
crashinfo global configuration command.
Using On-Board Failure Logging
You can use the on-board-failure logging (OBFL) feature to collect information about the switch. The
information includes uptime, temperature, and voltage information a nd hel ps Cisco t ech ni cal s uppo rt
representatives to troubleshoot switch problems. We recommend that you keep OBFL enabled and do
not erase the data stored in the flash memory.
This section has this information:
•Understanding OBFL, page 47-21
•Configuring OBFL, page 47-22
•Displaying OBFL Information, page47-22

Understanding OBFL

By default, OBFL is enabled. It collects information about the switch and small form-factor pluggable
(SFP) modules. The switch stores this information in the flash memory:
•CLI commands—Record of the OBFL CLI commands that are entere d on a st anda lone swit ch or a
switch stack member
•Environment data—Unique device identifier (UDI) information for a standalone s wit ch or a stac k
member and for all the connected FRU devices: the product identification (PID) , the version
identification (VID), and the serial number
•Message—Record of the hardware-related system messages generated by a stand alone sw itch or a
stack member
•Temperature—Temperature of a standalone switch or a stack member