The rate of processing in core node is still not matching the rate of transmission for optical burst switching(OBS).In order to improve capabilities of high-speed and high-capacity data exchange in core node,a traffic grooming mechanism which is called CDS-TG is proposed in optical burst switching networks.First of all,according to the advanced connected dominating set(CDS) algorithm,the grooming nodes were chosen from the OBS core networks; then in grooming nodes based on the multi-granularity ...