MPLS(Multi-Protocol Label Switching) VPN(Virtual Private Network) traffic has been deployed widely, but currently only supports unicast. This paper briefly introduces several available MPLS VPN multicast approaches, a...MPLS(Multi-Protocol Label Switching) VPN(Virtual Private Network) traffic has been deployed widely, but currently only supports unicast. This paper briefly introduces several available MPLS VPN multicast approaches, and then analyzes their disadvantages. A novel mechanism that uses two-layer label stack to support MPLS VPN explicit multicast is proposed and the process is discussed in detail. The scalability and performance of the proposed mechanism are studied analytically. The result shows that our solution has great advantage over the currently available scheme in terms of saving core network bandwidth and improving the scalability.展开更多
在分析了当前两种BGP/MPLS VPN组播方案可扩展性问题及其特点的基础上,提出了一种基于代理的组播改进方案。该方案使用代理VPN组播路由器将VPN上的组播局限在客户站点范围内,服务提供商(SP)网络上采用基于MPLS的P2MP(Point to MultiPoi...在分析了当前两种BGP/MPLS VPN组播方案可扩展性问题及其特点的基础上,提出了一种基于代理的组播改进方案。该方案使用代理VPN组播路由器将VPN上的组播局限在客户站点范围内,服务提供商(SP)网络上采用基于MPLS的P2MP(Point to MultiPoint)组播通道,有效地提高了组播在BGP/MPLS VPN上的可扩展性。最后针对提出的组播代理方案,采用当前流行的网络模拟器NS-2进行可扩展性仿真验证,网络仿真实验结果表明了该方案的可扩展性。展开更多
基金Supported by the National Natural Science Foundation of China(No.90204003)and National"863"Project(2001AAl21052)
文摘MPLS(Multi-Protocol Label Switching) VPN(Virtual Private Network) traffic has been deployed widely, but currently only supports unicast. This paper briefly introduces several available MPLS VPN multicast approaches, and then analyzes their disadvantages. A novel mechanism that uses two-layer label stack to support MPLS VPN explicit multicast is proposed and the process is discussed in detail. The scalability and performance of the proposed mechanism are studied analytically. The result shows that our solution has great advantage over the currently available scheme in terms of saving core network bandwidth and improving the scalability.
文摘在分析了当前两种BGP/MPLS VPN组播方案可扩展性问题及其特点的基础上,提出了一种基于代理的组播改进方案。该方案使用代理VPN组播路由器将VPN上的组播局限在客户站点范围内,服务提供商(SP)网络上采用基于MPLS的P2MP(Point to MultiPoint)组播通道,有效地提高了组播在BGP/MPLS VPN上的可扩展性。最后针对提出的组播代理方案,采用当前流行的网络模拟器NS-2进行可扩展性仿真验证,网络仿真实验结果表明了该方案的可扩展性。