Catalyst 3850 IOS...upgrade

[Kevin Smith]

I need to stack two Cisco 3850 switches...they are on different IOS....one is 03.02.02.SE and the other is 03.02.03.SE.....as you know for stack to work they need to be the same....so my question is has upgrading the IOS on these switches changed from the previous ways, and what is Digitally Signed?  and how does this impact the IOS-XE that comes on the new switches now?...also need a link to upgrade procedures....Thanks       

[Collin Clark]

Yes upgrading the software has changed. Here's a link on the upgrade process.

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps12686/deployment_guide_c07-727067.html#wp9000183

[Kevin Smith]

thank you for the reply....that worked....

[CrackedJack1]

See these two documents. I used the first one to update my 3850 (I did not the mode from the way it shipped so the first document is what i used)

https://supportforums.cisco.com/docs/DOC-36615

https://supportforums.cisco.com/docs/DOC-39667

[Kevin Smith]

also thak you for the reply.....it worked.

[Rasika Nayanajith]

Hi Kevin,

Not sure whether you experience this, I noticed TFTP transfer to my 3850s are very slow compare to USB flash method or FTP. Here is the reference post of that.

https://supportforums.cisco.com/thread/2242730

Here is switch upgrade process & set it up for wireless controller functionality if you are interested

http://mrncciew.com/2013/09/29/getting-started-with-3850/

HTH

Rasika

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[Kevin Smith]

Now that you mentioned it.....the tftp upgrade was slower than what I'm use too.....i will take note on the Forum.....

also thanks for the tech link on the wireless.....i will read it.