Multicast deployment with WDS 2012R2

Hi,

Testing WDS multicast deployment using Server 2012 R2. DHCP is also on the same box.

Unicast deployment work fine. Tested multicast scenarios but didn't helped.
Following the URL: http://social.technet.microsoft.com/forums/windowsserver/en-US/bba1f5d1-41ff-4351-8d6c-3070b2052a59/wds-and-multicasting-session-is-starting-too-soon

But it didn't helped either, nothing found in logs we well, even there were no log generated for multicast transmission.

Note: I don't have configured anything on Switch right now.

Any suggestions?

N.A.Malik