The PIM architecture for wide-area multicast routing
The PIM architecture for wide-area multicast routing
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DOI：
10.1109/90.490743
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发表时间：
1996-04-01
影响因子：
3.7
通讯作者：
Wei, LM
中科院分区：
文献类型：
--
作者：
Deering, S;Estrin, DL;Wei, LM
组播路由的目的是减少向多个接收者发送相同数据的应用程序的通信成本。现有的组播路由机制旨在在组广泛代表或带宽普遍充足的区域内使用。当组成员以及这些组成员的发送者稀疏分布在广阔的区域时，这些方案效率不高； data packets or membership report information are occasionally sent over many links that do not lead to receivers or senders, respectively, We have developed a multicast routing architecture that efficiently establishes distribution trees across wide area internets, where many groups will be sparsely represented, Efficiency is measured in terms of the router state, control message processing, and data packet processing, required across the entire network in order to deliver data packets to the members of the group, Our protocol independent multicast (PIM) architecture: a) maintains the traditional IP multicast service model of接收者发起的成员资格，b) 支持共享和特定源（最短路径）分发树，c) 不依赖于特定的单播路由协议，d) 使用软状态机制来适应底层网络条件和组动态。该架构的鲁棒性、灵活性和可扩展性使其非常适合大型异构互联网络。
The purpose of multicast routing is to reduce the communication costs for applications that send the same data to multiple recipients, Existing multicast routing mechanisms were intended for use within regions where a group is widely represented or bandwidth is universally plentiful, When group members, and senders to those group members, are distributed sparsely across a wide area, these schemes are not efficient; data packets or membership report information are occasionally sent over many links that do not lead to receivers or senders, respectively, We have developed a multicast routing architecture that efficiently establishes distribution trees across wide area internets, where many groups will be sparsely represented, Efficiency is measured in terms of the router state, control message processing, and data packet processing, required across the entire network in order to deliver data packets to the members of the group, Our protocol independent multicast (PIM) architecture: a) maintains the traditional IP multicast service model of receiver-initiated membership, b) supports both shared and source-specific (shortest-path) distribution trees, c) is not dependent on a specific unicast routing protocol, and d) uses soft-state mechanisms to adapt to underlying network conditions and group dynamics, The robustness, flexibility, and scaling properties of this architecture make it well-suited to large heterogeneous internetworks.