Cisco MDS 9000 NX-OS Software Upgrade and Downgrade
Each switch is shipped with the Cisco MDS NX-OS operating system for Cisco MDS 9000 family switches. The Cisco MDS NX-OS software consists of two images: the kickstart image and the system image. The images and variables are important factors in any install procedure. You must specify the variable and the respective image to upgrade or downgrade your switch. Both images are not always required for each install.
To select the kickstart image, use the KICKSTART variable.
To select the system image, ...
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