If the routing is happening on that L3 switch, then the Interface Vlans or the sub interfaces should be present for the connectivity..
On the Switch which is doing routing
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1> Int Vlans
2> Layer 2 Vlans
3> Required Vlans allowed on the trunk port connecting to the WLC
On the WLC
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1> DYnamic interfaces corresponding to the vlan.
2> WLAN with right dynamic vlan assignment.
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Regards
Surendra
Regards
Surendra BG