公开(公告)号：US20070147372A1

公开(公告)日：2007-06-28

申请号：US11554310

申请日：2006-10-30

申请人： Enhui Liu ,  Chunyue Zhou ,  Yue Zhang ,  Hongke Zhang

发明人： Enhui Liu ,  Chunyue Zhou ,  Yue Zhang ,  Hongke Zhang

IPC分类号： H04B7/216 ,  H04L12/56

CPC分类号： H04L12/4641 ,  H04L12/18 ,  H04L12/4633 ,  H04L45/00 ,  H04L45/04 ,  H04L45/16 ,  H04L45/48 ,  H04L45/586

摘要： A method for implementing multicast in a Virtual Router-based Virtual Private Network (VR-VPN), including: establishing a local multicast tree in each VPN site and a Service Provider (SP) multicast tree connecting each VPN site; setting a Proxy Source/Rendezvous Point (RP) for a multicast source on each VR; the multicast source transmitting multicast data to the Proxy Source/RP on an ingress VR, the Proxy Source/RP forwarding the multicast data to a local receiver along the local multicast tree, and transmitting the multicast data to an egress VR along the SP multicast tree after encapsulating the multicast data; the egress VR de-encapsulating the multicast data and discarding the multicast data or forwarding the multicast data to the local site according to local state. The present invention may improve the transmission efficiency, and reduces multicast on backbone routers, thereby improving the scalability of the network.

摘要翻译： 一种在基于虚拟路由器的虚拟专用网（VR-VPN）中实现组播的方法，包括：在每个VPN站点建立本地组播树，以及连接每个VPN站点的服务提供商（SP）组播树; 在每个VR上为组播源设置代理源/集合点（RP）; 组播源在入口VR上向组播源/ RP发送组播数据，代理源/ RP沿着本地组播树将组播数据转发给本地接收者，并将组播数据沿SP组播树发送到出口VR 封装组播数据后; 出口VR根据本地状态解封装组播数据，丢弃组播数据或将组播数据转发到本地站点。 本发明可以提高传输效率，减少骨干路由器上的组播，从而提高网络的可扩展性。