Please check the below detail and share the capture to find the root cause of the reboot issue,
# show switch detail # show diagnostic result switch # detail # show diagnostic switch # remote command # show log # show flash:
Example ------------------ show flash2: ------------------
Directory of flash2:/
431 drwx 64 Oct 11 2012 07:10:09 +00:00 crashinfo_ext 433 drwx 64 Mar 1 1993 00:00:31 +00:00 crashinfo
15998976 bytes total (530432 bytes free)
If you see that the crashinfo created on the switch, could you share the detail to reconfirm crashinfo which is available from the log message
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 switch 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 flash file system:
flash:/crashinfo_ext/. The filenames are crashinfo_ext_n where n is a sequence number.
Need the crashinfo file crashinfo_ext_1 from flash: and it will be helpful to investigate to find the root cause.
If you get show tech-support from the switch you can see the logs like which switch got crashed and will help to find the cause while seeing show log as well
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