When you tag a vlan on controller management, make sure that vlan is tagged on your switch as well. For example wlc management should NOT be on vlan x if your switchport configuration is like this.
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan X
switchport mode trunk
This document should help you
http://www.cisco.com/c/en/us/support/docs/wireless/2500-series-wireless-controllers/113034-2500-deploy-guide-00.html
HTH
Rasika
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