In order to develop important applications for CNGI,CNGI-CERNET2 planned to deploy SSM platform over IPv6,which supports multicast of streaming media,especially HDTV using SSM,in a large scale.Thus,establish an en-vironment of SSM/IPv6 in the lab,using open source software VLC to transmit and receive media,study about the re-alizability and relative performance of HDTV SSM over IPv6,which can be a reference and instruction for the deploy of SSM over CNGI-CERNET2.