I have upgraded an AP 1121G from autonomous mode to Lightweight mode using the upgrade tool of Cisco. The operation was successfully terminated but the tool didn't generate the SSC certificate needed for authorizing the AP in the controller (WLC 2106). And the access point fails to discover the controller.
Console into the ap and watch the log... it will show the SSC hash info in the log.
-Scott *** Please rate helpful posts ***
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