IP multicast techniques based on MPLS domain
基于多协议标签交换的IP组播技术

Merging MPLS and multicast techniques can acquire two advantages: saving bandwidth of multicast and supporting high-speed,QoS,traffic engineering and VPN in MPLS.Multicast and MPLS are two complementary techniques.MPLS multicast is pre-requisite and urgent for multimedia real-time steaming traffic with QoS parameters(such as bandwidth,delay,etc).Basic principles and research results of implementing mechanism,multicasting tree foundation in MPLS multicast were summarized.The existed problems and future research prospects were discussed.