改进的DSMCast区分服务组播方案  

Improved DSMCast Scheme of DiffServ Multicast

作　　者：黎明[1] 周杰[1] 高雪松[2] 刘晖[2] 刘淑英[2] 

机构地区：[1]华南理工大学广东省计算机网络重点实验室,广州510640 [2]华为技术有限公司网络预研部,北京100085

出　　处：《计算机工程》2008年第7期98-100,共3页Computer Engineering

基　　金：国家CNGI基金资助项目(CNGI-04-13-2T);2005年粤港关键领域突破基金资助重点项目“IPv6核心路由器研发与产品化”

摘　　要：给出DSMCast区分服务组播的一个改进方案,该方案只封装组播树上核心节点的复制、转发等信息,边界节点可维护各自的本地组播状态信息,保持了原有DSMCast方案中简化核心节点的优点,减少每个组播分组扩展头部的封装信息量,提高组播分组的有效利用率。仿真实验表明,改进的方案优于DSMCast方案。An improved approach of DSMCast is presented. In the approach, only the replicating and forwarding status information for the core nodes are encapsulated into the packets’ extended header, and the edge nodes should maintain local multicast informations. Core routers are simplified as it is in DSMCast, and the size of the extended header of multicast packets will descend dramatically. As a result, the utility ratio of each packet will be higher than DSMCast approach. According to the simulating result, the approach behaves better than DSMCast.

关 键 词：区分服务 组播 DSMCast方案 

分 类 号：TP393.07[自动化与计算机技术—计算机应用技术]