08-25-2018 06:39 PM - edited 03-08-2019 03:59 PM
I have a 3850 stack with 3 switches. They been up for half a year or so without any issues.
Today 3rd member switch shows v-mismatch.
I don't have autoupdate enabled.
What would be the best way for me to fix the issue with least amount of downtime.
I'm guessing image is still on the flash but I haven't consoled into that switch yet to verify
running denali 16.1.1
Solved! Go to Solution.
08-26-2018 12:22 AM
Check the uptime (sh version) of the stack. Maybe switch #3 had a crash/reboot and loaded a different IOS.
08-25-2018 07:07 PM
Is this a hardware mismatch or software? "show switch" will show you the hardware versions and "sh flash-1: and sh flash-2: will show you the IOS for each switch. Also, "sh ver switch 1" and 2 can show you what IOS each switch is running.
HTH
08-25-2018 07:36 PM
HW ver is V05 on all 3
both Flash1 and Flash2 has .bin that switch is booting with. Verified with sh boot
sh ver switch1 and 2 shows 16.01.01E.SPA pcks
08-25-2018 07:38 PM
How about switch 3?
08-25-2018 07:56 PM - edited 08-25-2018 08:03 PM
for flash-3: I see .bin as well.
if I do sh ver switch 3 Switch is not available. Please check if switch is in compatible state
08-25-2018 08:10 PM
It may be that the IOS is corrupted for some reason. Try reloading the same exact IOS version into switch-3 and during a maintenance window reload it.
HTH
08-25-2018 08:13 PM - edited 08-25-2018 08:33 PM
can I use archive copy-sw in this case
Also would I need to remove it from a stack?
08-25-2018 08:52 PM - edited 08-25-2018 08:54 PM
I think it is safer if you just remove it from the stack, load the IOS, make sure everything is fine and than add it back to the stack.
HTH
08-26-2018 12:22 AM
Check the uptime (sh version) of the stack. Maybe switch #3 had a crash/reboot and loaded a different IOS.
08-26-2018 06:53 AM
uptime is 39 weeks
08-26-2018 10:29 PM
08-29-2018 03:46 PM
it was the case of boot variable being changed for next reload. that switch took a reboot and booted into another version
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