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首页> 外文会议>International Conference on Information Networking: Wired Communications and Management ICOIN 2002, Jan 30-Feb 1, 2002, Cheju Island, Korea >A Router Assisting Control Tree Configuration Mechanism for Reliable Multicast
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A Router Assisting Control Tree Configuration Mechanism for Reliable Multicast

机译：可靠的组播路由器辅助控制树配置机制

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摘要

For reliable multicast service, the mechanism based on hierarchical control tree can be a promising solution to avoid well-known feedback implosion. However, configuration of an efficient control tree is very difficult for IP Multicast because it does not provide explicit membership and routing topology information to upper layer protocol. If the transport layer tree and the network layer tree are very different, it may take large cost to handle control messages. Especially, when a node at a downstream link of the network routing tree becomes a parent node of an upstream link at the control tree of transport layer, the discrepancy between routing tree and control tree causes to waste network resources by redundant messages. This problem can be solved if router that knows the information on routing topology can support configuration of a control tree and reliable delivery. However, the change of router function embraces deployment problem. Thus, this paper proposed a very simple method of router assist to minimize change of router functions. With this method, routers are only required to recognize message types of control messages in order to forward the messages to correct direction: upstream or downstream.
机译：对于可靠的多播服务，基于分层控制树的机制可以成为避免众所周知的反馈内爆的有前途的解决方案。但是，对于IP组播来说，高效控制树的配置非常困难，因为它没有提供明确的成员资格并将拓扑信息路由到上层协议。如果传输层树和网络层树非常不同，则处理控制消息可能会花费大量成本。特别是，当网络路由树的下游链路上的节点成为传输层的控制树上的上游链路的父节点时，路由树与控制树之间的差异会导致冗余消息浪费网络资源。如果知道路由拓扑信息的路由器可以支持控制树的配置和可靠的传递，则可以解决此问题。但是，路由器功能的改变包含部署问题。因此，本文提出了一种非常简单的路由器辅助方法，以最大程度地减少路由器功能的变化。使用此方法，只需要路由器识别控制消息的消息类型，即可将消息转发到正确的方向：上游还是下游。

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