Warning message

  • Cisco Support Forums is in Read Only mode while the site is being migrated.
  • Cisco Support Forums is in Read Only mode while the site is being migrated.

3750-24T-L randomly reboots without a cause

Unanswered Question
Sep 3rd, 2014
User Badges:

We have a WS-C3750X-24T-L switch that has 2 300W power supplies installed that is randomly rebooting its self about once a week. It is connected to a UPS, we have confirmed that the UPS and line power have not been interrupted at any time when the switch restarts. The logs show the switch was: Last reset from power-on. We have flipped the supplies positions in the switch and it still reboots. I have attached the output from running show tech.

Any ideas what may be going on?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
educruz Wed, 09/03/2014 - 09:10
User Badges:
  • Cisco Employee,



First off, I am trying to discard bug CSCtw50892, in which the switch shows "power-on" no matter what the actual cause is.

If there is a crash or anything, this bug does not allow us see the actual last reset reason.


Could you reload the switch via console out of business hours?


Proceed with reload? [confirm]  <<< (press enter)


Thereafter, you should see the following when typing "show ver"

Router uptime is 3 days, 18 hours, 39 minutes 
System restarted by [reload cause] 

System restarted by reload or system returned to ROM by reload






Let me go through the show tech and get back to you.


Kind regards,

- Ed

rdunton Wed, 09/03/2014 - 09:11
User Badges:


Thanks for the tip we can do that. I will let you know what the results are.


This Discussion