MPLS多播机制中模糊标签聚集的研究

计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (36): 147-149.

MPLS多播机制中模糊标签聚集的研究

杨琛,李秉智

重庆邮电大学计算机科学与技术学院，重庆 400065

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-12-21 发布日期:2007-12-21
通讯作者: 杨琛

Study on nonobjective label aggregation for multicast in MPLS networks

YANG Chen,LI Bing-zhi

College of Computer Science，Chongqing University of Posts and Telecommunications，Chongqing 400065，China

Received:1900-01-01 Revised:1900-01-01 Online:2007-12-21 Published:2007-12-21
Contact: YANG Chen

摘要/Abstract

摘要： 基于对LSP建立的触发方式、组播流的汇聚方案以及组播树的创建流程等问题的分析，提出了一种改进的流量驱动方式，以及在该触发方式下的组播流汇聚新方案——模糊标记聚合。该聚合的核心理念是为相似的组播树分配同样的标签，即对于不同的组播任务，只要组播树的入口、出口符合所定义的相似度，即使它们属于不同的FEC，也将获得相同的标签，从而为有限的标签空间极大地提高了资源利用率。该方案对于增强MPLS组播的可扩展性也同样适用。

关键词: MPLS, 模糊标记聚集, 组播树相似度, 组播树弹性

Abstract: Analyzing the way to inspire LSP’s setting up，label aggregation for multicast and how to build a specific LSP，this paper introduces an improved traffic driven mode，and a new scheme for multicast named nonobjective label aggregation.The main idea of such scheme is to allocate the same label for those similar multicast trees.That is to say，once the similarity among the multicast trees’ ingresses and exgresses fills the definition，the different tasks for multicast，even belong to different FECs，will get the same label.It can enhance the efficiency for the limited-label space，which may also be used to strengthen the expansibility for multicast in MPLS networks as well.

Key words: Multi-Protocol Label Switch（MPLS）, nonobjective label aggregation, similarity of multicast trees, expansion for multicast trees

杨琛,李秉智. MPLS多播机制中模糊标签聚集的研究[J]. 计算机工程与应用, 2007, 43(36): 147-149.

YANG Chen,LI Bing-zhi. Study on nonobjective label aggregation for multicast in MPLS networks[J]. Computer Engineering and Applications, 2007, 43(36): 147-149.