Controller rebooted on 10.11 firmware when Access Points are approved or released to it in bulk
A controller reboots after new AP's are approved all at once, in a large amount.
A controller reboots after upgrade or failover, when a large amount of AP's are released back to it.
Version 10.11.01 or 10.11.02
This is a condition that is not likely to occur, and is caused by a problem in a hashing algorithm performed when the controller is checking the mac addresses of bulk AP's.
Resolved in firmware 10.21.03 or higher Release Note: wns0015950 Corrected debug statement that could create a stack overflow by printing a value out of bounds, resulting in instability of wireless appliance (controller)