Hello Susana
I think that gtacknowledge article which BigRic referenced will help you.
Just for your information about upgrading the software on the stack
To run the upgraded software, you must reboot the stack after installation with the image partition that received the software being selected.
If both primary and secondary partitions have the same ExtremeXOS release, you may use the following commands to cause a node to use the same active image as the rest of the stack:
use image {primary | secondary} slot slot-number
reboot slot slot-number
If you are using the primary image on your master node and some other node primary image does not contain the same ExtremeXOS version as your master node's primary image, you may use the command:
synchronize slot slotid to cause the node to contain the same ExtremeXOS versions in both partitions as it is on the master node, and to reboot the node into the primary partition.
http://documentation.extremenetworks.com/exos_22.2/exos_21_1/stacking/t_upgrade-the-software-on-all-...
Best regards
