| 基于接口格式的稀疏组播转发状态压缩方案 |
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| 引用本文： | 黄奎,吴亦川,郑健平,吴志美.基于接口格式的稀疏组播转发状态压缩方案[J].计算机研究与发展,2005,42(9):1564-1570. |
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| 作者姓名： | 黄奎 吴亦川 郑健平 吴志美 |
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| 作者单位： | 中国科学院软件研究所多媒体通信中心,北京,100080;中国传媒大学数字化工程中心,北京,100024;中国科学院软件研究所多媒体通信中心,北京,100080 |
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| 基金项目： | 国家自然科学基金项目（60272078） |
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| 摘 要： | 组播转发状态随组播组个数线性增长导致组播路由协议的扩展性较差．分析了已有的用于稀疏模式组播的转发状态组内压缩方案存在的问题，提出了一个新的压缩方案．该方案根据组播树上分支路由器的位置和个数，动态调整组播转发表项中各个接口的格式，进一步减少了转发状态占用的存储空间．
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| 关 键 词： | 组播 稀疏模式 转发状态压缩 接口格式 |
| 收稿时间： | 2004-02-24 |
| 修稿时间： | 2004-02-242005-03-25 |
Forwarding State Reduction Scheme Based on Interface Format for Sparse Mode Multicast |
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| Huang Kui,Wu Yichuan,Zheng Jianping,Wu Zhimei.Forwarding State Reduction Scheme Based on Interface Format for Sparse Mode Multicast[J].Journal of Computer Research and Development,2005,42(9):1564-1570. |
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| Authors: | Huang Kui Wu Yichuan Zheng Jianping Wu Zhimei |
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| Abstract: | Forwarding state proportional to the number of multicast groups may cause the scalability problem of multicast routing protocols. Existing intra-group forwarding state reduction approaches for sparse mode multicast, which aim to remove forwarding states at non-branching routers, are analyzed, and some problems appearing in these schemes are presented. A new forwarding state reduction scheme is proposed, which reduces storage requirement of multicast forwarding state by dynamically modifying the format of each interface in the multicast forwarding table entries according to the location and number of branching points on the multicast tree. |
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| Keywords: | multicast sparse mode forwarding state reduction interface format |
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