09-10-2013 06:33 AM - edited 03-07-2019 03:23 PM
Hi,
Is it possible to upgrade the IOS on a cisco 3850 stack in a non disruptive way?
Reloading 1 switch at a time?
Or do you need to reload the entire stack at once, like a 3750 stack?
Solved! Go to Solution.
03-13-2020 12:09 AM
Dears, Just you have to follow bug fix for this version.
03-10-2018 07:54 AM
I will proceed with this way. I hope it will work without any issues.
03-10-2018 07:55 AM
In case if i will use TFTP instated of USB it will work or not. Any idea !!!!!!
04-29-2015 10:31 AM
Hi Manny:
what happend with license after upgrade of IOS-XR, it does not lose ?
Thank.
Marco.
07-13-2015 07:11 AM
I don't think there is any change to your licensing with the image upgrade..You still retain the same license features as long as you downloaded the corresponding software.
Thanks,
Manny.
07-13-2015 07:02 AM
Slight modification. for switch 2 (running 03.03.05) there is a hyphen before the switch number
Switch#copy usbflash0:[image name] flash-2:
this works well and much quicker than TFTP.
Thanks,
04-24-2018 10:25 AM
Just a note to make sure you have enough free space in flash memory on all your switches. I had one stack that would load the image file on the first switch and fail when trying to deploy to the other switches. Turns out I had a bunch of old image clutter. Once i purged the old IOS version files the upgrade went smoothly.
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