WS-C3850 Stack Upgrade

[RaghulCR94351]

Hi,

Any good document for the upgrade procedure of IOS XE from  03.07.05E to 16.9.6 for 3850 stack?

[Spooster IT Services]

@RaghulCR94351 

Here is the link to Cisco's document to upgrade IOS on 3850.

Catalyst 3850 Series Switch Upgrade, Management, and Recovery Techniques - Cisco

Also, I would recommend to through the release notes of IOS 16.9.x below:

Release Notes for Cisco Catalyst 3850 Series Switches, Cisco IOS XE Fuji 16.9.x - Cisco

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[balaji.bandi]

Cisco 3850 got USB stick - download the Latest Image from Cisco side copy to USB

make sure check  Cat 3850 install mode ? or bundle mode ?

Always offload the configuraiton out of the box to your Local download.

I prefer install mode  as below :

dir usbflash0:

This should list all the files on your USB

You now need to copy the image from the USB to the Flash of the switch.

copy usbflash0:cat3k_caa-universalk9.XXXXX.bin flash:

Now proceed to the software install

#software install file flash:cat3k_caa-universalk9.SPA.03.07.02.E.152-3.E2.bin switch 1-3 (switch 1-3 thinking that you have 2 switches in stack - change the number based on the number of devices in the stack)

It upgrade micro code, so allow more time for maintenance and reboot the stack.

read the relase notes also :

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-9/release_notes/ol-16-9-3850.html#id_77758