§ All controller should be in AOS 6.3 code
§ Master controller has to be first upgraded with the 6.3.x Image
§ Configuration has to be enabled on the master controller
§ No local file upgrade possible
§ The server should be reachable for the master and local/standby controller that are specified in the target list.
§ When we initiate the upgrade from master the upgrade it will always upgrade the alternate boot partition present on the Local/Standby controllers.
§ Currently we cannot specify which boot partition to be upgraded
§ When the upgrade is initiated via server, files will not be directly upgraded to the partition; files would be downloaded to flash and then would be loaded to the partition.
§ Maximum of 100 controllers can be simultaneously upgraded
§ Auto-reboot; When “autoreboot” is enabled any configuration from the local/ standby controller should be saved since when an auto-reboot option is enabled it would reboot target controller automatically without doing “write memory”
§ Always chooses alternate boot partition of the local/standby controllers when the upgrade is initiated