公开(公告)号：US06483832B1

公开(公告)日：2002-11-19

申请号：US09060292

申请日：1998-04-14

申请人： Seyhan Civanlar ,  Don Richard Coffield ,  William J. Leighton, III ,  Rustom K. Masalawala ,  Vikram R. Saksena

发明人： Seyhan Civanlar ,  Don Richard Coffield ,  William J. Leighton, III ,  Rustom K. Masalawala ,  Vikram R. Saksena

IPC分类号： H04L1228

CPC分类号： H04L12/1886 ,  H04L12/4608 ,  H04L12/5601 ,  H04L2012/5615 ,  H04L2012/5617 ,  H04L2012/5619 ,  H04L2012/5642 ,  H04L2012/5645 ,  H04L2012/5667 ,  H04Q11/0478

摘要： A method and a system for forwarding multicast data packets across a plurality of telecommunications subnets interconnected by routers in which a data packet is received within a subnet of the plurality of telecommunications subnets. When the data packet is a multicast data packet, a multicast IP address for the multicast data packet is determined. A multicast forwarding database is accessed for determining a LAN Emulation Client associated with the multicast IP address, and a Broadcast Unknown Server associated with the multicast IP address for the multicast data packet is determined. The multicast data packet is sent to the Broadcast Unknown Server associated with the multicast IP address for the multicast data packet through the LAN Emulation Client using a point-to-point connection. The Broadcast Unknown Server sends the multicast data packet inter-subnet to each router associated with the multicast IP address for the multicast data packet using a point-to-multipoint connection, with at least one multicast host being connected to a subnet that is different from the subnet in which the multicast data packet was received.

摘要翻译： 一种用于在由多个电信子网互连的多个电信子网中转发多播数据分组的方法和系统，其中数据分组在多个电信子网的子网内被接收。 当数据包是组播数据包时，确定组播数据包的组播IP地址。 访问多播转发数据库以确定与多播IP地址相关联的LAN仿真客户端，并且确定与组播数据分组的多播IP地址相关联的广播未知服务器。 组播数据包通过LAN Emulation Client使用点对点连接发送到与组播数据包的组播IP地址相关联的广播未知服务器。 广播未知服务器使用点对多点连接将组播数据分组子网发送到与组播数据分组的组播IP地址相关联的每个路由器，至少一个组播主机连接到不同于 接收组播数据包的子网。