北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (2): 80-83.doi: 10.13190/jbupt.200702.80.songl

• 论文 • 上一篇    下一篇

MPLS组播树的构建方法

宋 玲,李海霞   

  1. (广西大学 计算机与电子信息学院, 南宁530004)
  • 收稿日期:2006-05-08 修回日期:1900-01-01 出版日期:2007-04-30 发布日期:2007-04-30
  • 通讯作者: 宋 玲

Research and Simulation of Constructing MPLS Multicast Tree

SONG Ling , LI Hai-xia   

  1. (School of Computer and Electronics and Information, Guangxi University, Nanning 530004, China)
  • Received:2006-05-08 Revised:1900-01-01 Online:2007-04-30 Published:2007-04-30
  • Contact: SONG Ling

摘要:

对多协议标签交换(MPLS)和组播结合的关键技术和问题进行了研究,提出了一种基于接收方数据流驱动的标签分配机制构建MPLS域中标签交换路径(LSP)组播树的方案,给出了MPLS网络中成员加入和退出组播组以及组播包的复制和转发算法,并对网络仿真器(NS2)中的单播MPLS模块进行了扩展以支持所提出的组播算法。性能分析和仿真实验结果表明,与传统组播相比,MPLS组播技术能利用MPLS的快速转发能力有效地减少组播包的传输时延。

关键词: 多协议标签交换, 组播, 标签交换路径

Abstract:

The problems of combining multi protocol label switching (MPLS) with multicast were studied. Based on the receiver data-driven label distribution, a new mechanism was proposed about how to construct a label switched path (LSP)multicast routing tree in the MPLS domain. The joining, pruning and multicast packets forwarding algorithms were presented. In addition, the MPLS module of network simulator was modified for the MPLS multicast simulation. Analysis of performance and simulation results show that, comparing with traditional multicast, MPLS multicast can take advantage of the fast forwarding feature of MPLS to reduce the packet-delay from source to destination effectively.

Key words: multi protocol label switching, multicast, label switched path

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