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1. 发明授权

US06914907B1 Method and apparatus for providing multi-cast transmissions using a distributed router 有权
标题翻译：使用分布式路由器提供多播传输的方法和装置
公开(公告)号：US06914907B1
公开(公告)日：2005-07-05
申请号：US09368651
申请日：1999-08-05
申请人： Rajeev Bhardwaj , Pawan Singh , Curt Moffitt , Paul Grepps , Medhavi Bhatia , Sanjay Khanna
发明人： Rajeev Bhardwaj , Pawan Singh , Curt Moffitt , Paul Grepps , Medhavi Bhatia , Sanjay Khanna
IPC分类号： H04J3/26 , H04L12/18 , H04L12/56
CPC分类号： H04L12/1886 , H04L45/04 , H04L45/16
摘要： A method and apparatus that includes processing for providing multi-cast transmissions within a data network begins by determining, for a source virtual network, a list of downstream virtual sub-networks for multi-cast traffic based on a multi-cast routing protocol. The processing then continues by determining multi-cast group membership on as per downstream virtual sub-network, edge device, and port basis. The process continues when a data packet is received via the source virtual network. The processing then continues by generating a multi-cast session table entry based on the list of downstream virtual sub-networks and the multi-cast group membership. The process continues by establishing virtual connections between the source virtual network and edge devices coupled to virtual sub-networks identified in the list of downstream virtual sub-networks. Having generated the virtual connections, the processing continues by downloading the multi-cast session table to the edge devices. The edge devices utilize the multi-cast session table entry to determine where the received data packets are to be forwarded.
摘要翻译：一种包括用于在数据网络内提供多播传输的处理的方法和装置，首先通过基于多播路由协议来确定源虚拟网络中用于多播流量的下游虚拟子网的列表。然后通过根据下游虚拟子网络，边缘设备和端口基础确定多播组成员资格来继续处理。当通过源虚拟网络接收到数据分组时，该过程继续。然后通过基于下游虚拟子网络和多播组成员资格的列表生成多播会话表条目来继续处理。该过程通过在源虚拟网络和耦合到在下游虚拟子网络列表中标识的虚拟子网络的边缘设备之间建立虚拟连接来继续。在生成虚拟连接之后，通过将多播会话表下载到边缘设备来继续处理。边缘设备利用多播会话表条目来确定接收到的数据分组将在哪里被转发。

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