Thanks cjoseph.
Glad the answer is yes.. then i would exclude this as part of my concern as currently those APs are failed to up in the local controller.
The local controller is MC7205 with version 6.4.3.7 and AP is series 205. (Master controller is 7210 with same version)
I did console into the AP and it able to ping local controller.. but somehow it seems doesn't form the tunnel to the controller until i changed the master ip to master IP then it able to up in master.
Centralized licensing in turned on as this pair of controller will sharing the license pool.
Could you kindly advise me on this as I've run out of idea.
Thanks.