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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 51 Troubleshooting Troubleshooting Tables
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 51-3:
For more information about using the commands in Table 51-3 and for examples of OBFL data, see the
command reference for this release.
Troubleshooting Tables
These tables are a condensed version of troubleshooting documents on Cisco.com.
• “Troubleshooting CPU Utilization” on page -28
• “Troubleshooting Power over Ethernet (PoE)” on page -29
• “Troubleshooting Stackwise (Catalyst 3750-X Switches Only)” on page -32
Tab le 51-3 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.