Had a 3650 switch stack I needed to upgrade from IOS 16.6.5 to 16.6.8. The software upgrade procedure is quite different from the 3550/3560/3750s I’d done in the past.
First step is simply download the .bin file to the first switch’s onboard flash drive:
Switch# copy http://mysite/cat3k_caa-universalk9.16.06.08.SPA.bin flash:
I then verify the signature:
Switch#verify flash:cat3k_caa-universalk9.16.06.08.SPA.bin Starting image verification Digital signature successfully verified in package cat3k_caa-rpbase.16.06.08.SPA.pkg Digital signature successfully verified in package cat3k_caa-srdriver.16.06.08.SPA.pkg Digital signature successfully verified in package cat3k_caa-webui.16.06.08.SPA.pkg Digital signature successfully verified in package cat3k_caa-rpcore.16.06.08.SPA.pkg Digital signature successfully verified in package cat3k_caa-guestshell.16.06.08.SPA.pkg Digital signature successfully verified in file flash:cat3k_caa-universalk9.16.06.08.SPA.bin
The actual command to start the upgrade is quite a mouthful:
Switch#request platform software package install switch all file flash:cat3k_caa-universalk9.16.06.08.SPA.bin new auto-copy --- Starting install local lock acquisition on switch 1 --- Finished install local lock acquisition on switch 1 .... SUCCESS: Software provisioned. New software will load on reboot. : Finished install successful on switch 2 Checking status of install on [1 2] [1 2]: Finished install in switch 1 2 SUCCESS: Finished install: Success on [1 2]
This distributes the software as .pkg files on each stack member.
To proceed with the actual upgrade I simply rebooted the entire stack. Ideally I would have done a rolling upgrade similar to how I did 3750s a few years ago, but could not determine if this is supported on the 3650/3850
Other useful commands:
To copy the image on the fly during the upgrade process:
Switch# request platform software package expand switch all file http://mysite.com/mypath/cat3k_caa-universalk9.16.12.04.SPA.bin to flash: auto-copy
To clean up old packages to free up disk space:
Switch# request platform software package clean switch all file flash: