Switch Self Reset - Cisco Catalyst 9404R Switch Hardware Installation Manual

Switch Self Reset

• Make sure that the supervisor module properly seats in the backplane connector and that you have
•
• Make sure that these configurations are synchronized between the active and redundant supervisor
If a software upgrade is performed on both the active and standby supervisor module, verify that both supervisor
modules are running the same new software image. If the software images are not the same, upgrade the
software image. Use the procedure in the software configuration guide for your release.
If the standby supervisor still does not come on line, create a service request with Cisco Technical Support.
Use the log of the switch output that you collected from the previous troubleshooting steps.
Switch Self Reset
If the switch has reset or rebooted on its own, verify that the power source for the switch did not fail. If you
use an uninterruptable power supply (UPS), make sure that the UPS does not have any problems.
The switch might have had a software crash. Enter the more crashinfo:data command to display the crash
information including date and time of the last time that the switch crashed. To display the standby supervisor
engine crash data, enter the more slavecrashinfo:data command. Crash data is not present if the switch has
not crashed.
If the output indicates a software crash at the time that you suspect that the switch rebooted, the problem can
be something other than a hardware failure. Contact Cisco Technical Support with the output of these
commands:
• show tech-support
• show logging
• more crashinfo:data
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
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and check if it is in ROMMON mode or in continuous reboot. If the standby supervisor is in either of
these two states, refer to the System Management > Troubleshooting the Software Configuration section
of the Software Configuration Guide
completely screwed down the captive screws for the supervisor module.
Switch# redundancy reload peer
In order to determine whether the standby supervisor module is faulty, enter the redundancy reload
peer command from the active supervisor and through the console to the standby supervisor. Observe
the bootup sequence in order to identify any hardware failures. Currently, the active supervisor module
cannot access the power-on diagnostics results of the standby supervisor module.
modules:
• Startup configuration
• Boot variable
• Configuration register
• Calendar
• VLAN database
Troubleshooting