Unexpected reload from stack

[afsharki2]

Hello, I have a stack of 2 3850s.  The active switch unexpectedly reloads, causing the standby to become active; they swap places.  I have a very large switch-report file that has been generated.  The switch-report file is a .gz file and apparently its compressed.  how do I uncompress this file?  also, lets say Cisco can't help me because I don't have a support contract...what would people do in this situation to investigate the problem?

Thank you

[Cisco Freak]

Hi afsharki2,

Please check the reason for the reload in 'Show version' output.

Also check if the switch generated a crashdump file in the flash when it rebooted. You can open a TAC case with that crashdump attached.

CF

[afsharki2]

Sh version doesn't give a reload reason other than the one that happened more than 6 months ago  when there was a "power failure".  I guess the whole stack has to be reloaded in order for sh ver to reset the switch up time.  As far as Cisco TAC: I can't submit it because I don't have it, that's why I asked what other method I can use to investigate this.

"sh version"

switchABC  uptime is 35 weeks, 25 minutes

Switch 01
---------
Switch uptime : 10 hours, 22 minutes

[Cisco Freak]

Use the remote command option:

remote command <switch num> sh ver

Find the peer switch num using the show switch command.

sw-01#sh switch
Switch/Stack Mac Address : 0023.abce.a380
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0023.abce.a380 1 0 Ready
2 Member 001b.8f73.5580 15 0 Ready

sw-01#remote command 2 show version
Switch : 2 :
------------