I installed both VMware Legacy and VEPA.
In my environment I have to use VEPA.
I mixed it up and get confused before.
I have upgraded DP from v6.2 to V7.0 and follow the information provided by the integration guide.
After some trials it sloved.
Thanks the information provided by Sandeep and Christophe.
You guys really help me to figure out what wrong with my problem.