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New Member

C3750 reboot

I have a switch stack of two 3750s. Recently the master in the stack rebooted. I am trying to determine why. Unfortunately the switch is only configured to log to the internal bufer and this has been overwritten with more recent events. Is there any way to find out why the restart occured (it wasn't planned).

  • LAN Switching and Routing
9 REPLIES
Cisco Employee

Re: C3750 reboot

Hi Leonard,

Can you check the output of "sh version" it should show you reload reason. This output may give you some idea.

HTH

Ankur

*Pls rate all helpfull post

New Member

Re: C3750 reboot

Hi Ankur

"sh version" tells you when the stack was reloaded and why which in our case was a power on a few weeks ago which I am aware of. The recent restart of the master switch is displayed at the bottom of the command output but it doesn't display a reason why.

Regards

Gary

Cisco Employee

Re: C3750 reboot

Hi Gary,

Can you issue a command "sh tech" and see if you get any stack trace? Also is it possible for you to post the output of "sh version"?

Regards,

Ankur

New Member

Re: C3750 reboot

Hi Ankur

Please see attached files

Regards

Gary

Cisco Employee

Re: C3750 reboot

Hi Gary,

With the outputs I cannot find anyting specific. Can you issue "sh tech" and then do you see any crash or stack trace?

Regards,

Ankur

New Member

Re: C3750 reboot

Hi Ankur

I've looked through the "sh tech". I can't see anything related to a crash. But I'm not 100% sure what to look for though.

Regards

Gary

New Member

Re: C3750 reboot

Ankur

Is there a way of configuring the switch so that it dumps info in the future?

Gary

Cisco Employee
New Member

Re: C3750 reboot

Thanks for your help Ankur

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