| 一种基于MPLS网络的快速故障恢复算法 |
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| 引用本文： | 王焱,郑俊辉,刘念伯,易发胜.一种基于MPLS网络的快速故障恢复算法[J].小型微型计算机系统,2007,28(11):2024-2027. |
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| 作者姓名： | 王焱 郑俊辉 刘念伯 易发胜 |
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| 作者单位： | 1. 电子科技大学,计算机科学与工程学院,四川,成都,610054
2. 西南民族大学,计算机科学与技术学院,四川,成都,610041 |
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| 基金项目： | 国家自然科学基金;电子科技大学校科研和教改项目 |
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| 摘 要： | 现有的MPLS故障恢复方案存在不同的性能问题:Makam方案需要提前建立备份路径,浪费了大量网络资源;简单动态方案动态建立备份路径,资源利用率高,但是需要等待路由表收敛,恢复时间长,造成大量丢包.针对这些不足,提出了一种基于MPLS网络的快速故障恢复算法MBFR.MBFR算法在故障发生以后建立备份路径,但是不需要等待路由表收敛,只需根据PIL中信源树和当前故障信息就可以快速计算出备份路径,既不浪费网络资源,又缩小了恢复时间.仿真实验结果验证了MBFR算法的优越性.
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| 关 键 词： | 故障恢复 备份路径 信源树 |
| 文章编号： | 1000-1220（2007）11-2024-04 |
| 修稿时间： | 2006-07-27 |
Method of MPLS-based Fast Recovery |
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| WANG Yan,ZHENG Jun-hui,LIU Nian-bo,YI Fa-sheng.Method of MPLS-based Fast Recovery[J].Mini-micro Systems,2007,28(11):2024-2027. |
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| Authors: | WANG Yan ZHENG Jun-hui LIU Nian-bo YI Fa-sheng |
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| Affiliation: | 1.School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China;2.School of Computer Science and Technology,Southwest University for Nationalities ,Chengdu 610041,China |
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| Abstract: | Current MPLS-based recovery schemes have different performance problems:In Makam scheme backup path is established beforehand,so a great deal of resources are wasted;In Simple-dynamic scheme backup path is established dynamically so that the utilization ratio of resources is high.But it must wait for routing table's resume,so recovery time is long and loses a lot of packets.A method of MPLSBased Fast Recovery(MBFR) is presented.In MBFR backup path is established after failure happens.But it doesn't waiting for routing table's resume.It works out backup path based on Source Tree of PIL and current failure information,so it doesn't waste resources and shortens recovery time.The Simulation result validates the superiority of MBFR. |
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| Keywords: | MPLS |
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