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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Troubleshooting
Using On-Board Failure Logging
To clear all the OBFL data in the flash memory except for the uptime and CLI command information,
use the clear logging onboard privileged EXEC command.
In a switch stack, you can enable OBFL on a standalone switch or on all stack members by using the
hw-module module logging onboard [message level level] global configuration command.
In a switch stack, if you enter the hw-module module [switch-number] logging onboard command on
a stack member that does not support OBFL, such as a Catalyst 3750 switch, a message appears with that
information. If a Catalyst 3750 switch is a stack master in a mixed stack of Catalyst 3750-X and 3750
switches and you enter an OBFL command on the Catalyst 3750 switch, the command does not take
effect on the stack master, but the stack master sends the OBFL configuration information to the stack
members.
For more information about the commands in this section, see the command reference for this release.
Displaying OBFL Information
To display the OBFL information, use one or more of the privileged EXEC commands in Table 1-4:
For more information about using the commands in Table 1-4 and for examples of OBFL data, see the
command reference for this release.
Table 1-4 Commands for Displaying OBFL Information
Command Purpose
show logging onboard [module
[switch-number]] clilog
Displays the OBFL CLI commands that were entered on a standalone
switch or the specified stack members.
show logging onboard [module
[switch-number]] environment
Display the UDI information for a standalone switch or the specified
stack members and for all the connected FRU devices: the PID, the VID,
and the serial number.
show logging onboard [module
[switch-number]] message
Display the hardware-related messages generated by a standalone switch
or the specified stack members.
show logging onboard [module
[switch-number]] poe
Display the power consumption of PoE ports on a standalone switch or
the specified stack members.
show logging onboard [module
[switch-number]] temperature
Display the temperature of a standalone switch or the specified switch
stack members.
show logging onboard [module
[switch-number]] uptime
Display the time when a standalone switch or the specified stack members
start, the reason the standalone switch or specified stack members restart,
and the length of time that the standalone switch or specified stack
members have been running since they last restarted.
show logging onboard [module
[switch-number]] voltage
Display the system voltages of a standalone switch or the specified stack
members.
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