Is there a non interruptive procedure to upgrade IOS-XE on redundant SUP engine Catalyst 9400

[aoster]

Hi all,

a supervisor engine in one of our Catalyst 9410R chassis has failed and needs to be replaced. We have a dual SUP setup so there is still one functioning active sup engine in the chassis. Cisco has sent a replacement part but the new one has a different IOS-XE version than the current active one. As this switch is acting as our central core/ditribution switch we would like/need  to avoid a chassis reload.

Does someone know of any possible way to upgrade the new sup engine from ROMMON to the same IOS-XE release which is currently active ?  We are using IOS-XE 16.11.1 in install mode, the new sup came with IOS-XE version 16.09.4

Thank you for your kind help.

Best regards

Andreas

[marce1000]

 - If this is not possible you could ask Cisco to deliver the spare part with the needed version.

    M.

[Leo Laohoo]

1. Plug the replacement supervisor into the chassis (it will boot into ROMMON).
2. Get a USB stick and load the firmware you want into it.
3. Tell the replacement supervisor to boot the IOS in the USB stick using the command "emergency-install usbflash0:filename.bin".

[aoster]

Hi Leo,


thank you very much for your reply.


When booting the new sup engine with this command does it only boot the new
image or will it also be installed ?


Best regards
Andreas

[Leo Laohoo]

Installed but check after boot to ensure the image is installed correctly or not.