Environment- This article applies to all Instant models and versions.
Answer- Instant has 2 partitions: Primary & BackupBoth these partitions would store image versions related to IAP or AOS.When we convert an IAP to CAP/RAP, the controller-based AP firmware is stored on partition Primary Partition.Similarly, when we upgrade the firmware of Instant, primary partition gets upgraded.Below is the command to check the partition and the image version stored when the unit is operating in Instant mode:00:24:6c:c8:68:98# show image versionPrimary Partition Build Time :2015-01-15 08:03:57 PSTPrimary Partition Build Version :126.96.36.199-188.8.131.52_48114Backup Partition Build Time :2015-02-15 12:54:42 PSTBackup Partition Build Version :184.108.40.206-220.127.116.11_4862900:24:6c:c8:68:98# show versionAruba Operating System Software.ArubaOS (MODEL: 105), Version 18.104.22.168-22.214.171.124Website: http://www.arubanetworks.comCopyright (c) 2002-2015, Aruba Networks, Inc.Compiled on 2015-01-15 at 08:03:57 PST (build 48114) by p4buildAs we see from the above command, primary runs 126.96.36.199 and backup runs 188.8.131.52. If at any point we want to change the boot partition of the Instant the below command needs to be executed from CLI. This is not available in GUI:00:24:6c:c8:68:98# switch-partition-reboot=========[now the AP will reboot]===========00:24:6c:c8:68:98# show versionAlcatel-Lucent Operating System-Wireless.AOS-W (MODEL: OAW-AP105), Version 184.108.40.206-220.127.116.11Website: http://enterprise.alcatel-lucent.com/All Rights Reserved (c) 2005-2015, Alcatel-Lucent.Compiled on 2015-02-15 at 12:54:42 PST (build 48629) by p4buildAP uptime is 2 minutes 8 secondsReboot Time and Cause: AP rebooted Fri Dec 31 16:40:17 UTC 1999; CLI cmd at uptime 0D 0H 40M 16S: switch-partition-reboot00:24:6c:c8:68:98# show image versionPrimary Partition Build Time :2015-02-15 12:54:42 PSTPrimary Partition Build Version :18.104.22.168-22.214.171.124_48629Backup Partition Build Time :2015-01-15 08:03:57 PSTBackup Partition Build Version :126.96.36.199-188.8.131.52_48114Now if an upgrade is performed, the new image will get stored in partition 0.
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