I have a 9800 WLC with flexconnect enabled with a number of AP's associated. I am wanting to test the AP upgrade feature to see if it will allow for scheduled or at least staggered updates. Reason is the WLC will serve as a head end for remote sites. I am wanting to know of there is an alternative to having all remote sites upgrading at same time if WLC is upgraded
Under the Flex Profile make sure that u select "Efficient AP Upgrade", This will make sure that only 1 AP per model downloads the AP image over the WAN link and then distributes it to other AP's at the remote site. This will not work if all of your AP's are in default site tag.