upgrading firmware on 3850 via usb

[robertkwild]

hi all,

got a good how to to follow

https://www.rogerperkin.co.uk/cisco/software-upgrade-guides/upgrade-software-cisco-3850-switch/

thing is im upgrading all switches already in stack and just wondering if i upgrade them to all new versions, will it lose stacking as i heard stacking requires a license and obviously for all them to be on the right version

thanks,

rob

edit -

software install file flash-1:cat3k_caa-universalk9.16.03.07.SPA.bin new force switch 1-4

"new force" to get past compatibility errors, but do i want to do that?

also

after the upgrade, do i need to do

"software clean" to clean up old files?

[Leo Laohoo]

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@robertkwild wrote:

I see on any software install statements you don't specify what switches to install on ie switch 1,2,3,4 or all etc, don't you need to specify this, if you want to install on stack

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Not needed. 

The generic command is smart enough to determine which switch member(s) need the firmware.

[robertkwild]

I think the bug is resolvable if you do a clean of your flash BEFOFE you start the new install of firmware isn't it

[Leo Laohoo]

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@robertkwild wrote:

I think the bug is resolvable if you do a clean of your flash BEFOFE you start the new install of firmware isn't it

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No, it does not.

[robertkwild]

Do I need to still do this

software auto-upgrade enable

as on the new howto I don't see the command

[Leo Laohoo]

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@robertkwild wrote:

as on the new howto I don't see the command

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This is all up to you.