| OSPF协议报文刷新机制的分析和改进 |
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| 引用本文： | 陈智波,徐明伟,崔勇,徐恪.OSPF协议报文刷新机制的分析和改进[J].清华大学学报(自然科学版),2005,45(7):966-968. |
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| 作者姓名： | 陈智波 徐明伟 崔勇 徐恪 |
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| 作者单位： | 清华大学计算机科学与技术系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目(90104002)，国家“九七三”基础研究项目(2003CB314801) |
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| 摘 要： | OSPF(open shortest path first)协议的报文刷新机制会产生大量的报文,给网络带来很大的突发流量。为了减少OSPF给网络带来的负载,该文对OSPF的报文刷新机制进行深入的分析,证明了延长OSPF报文刷新间隔不会影响协议行为和性能的结论。据此该文提出了ERR(enhanced randomized refresh)机制。ERR机制采用随机分散OSPF报文的刷新时间和延长OSPF报文刷新间隔的方法,消除了OSPF带来的突发流量和减少了OSPF报文的数量。该文采用VENUS模拟器进行模拟,实验结果显示:ERR机制比标准刷新机制减少了三分之一的报文,同时消除了OSPF刷新报文给网络带来的突发流量。
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| 关 键 词： | 计算机网络 路由协议 开发式最短路径优先 刷新机制 网络流量 |
| 文章编号： | 1000-0054(2005)07-0966-03 |
| 修稿时间： | 2004年6月28日 |
Improved OSPF refresh mechanism |
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| Chen Zhibo,XU Mingwei,CUI Yong,XU Ke.Improved OSPF refresh mechanism[J].Journal of Tsinghua University(Science and Technology),2005,45(7):966-968. |
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| Authors: | Chen Zhibo XU Mingwei CUI Yong XU Ke |
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| Abstract: | The OSPF (open shortest path first) refresh mechanism can cause periodic bursts of traffic on networks. Analysis of the OSPF refresh mechanism showed that extending the OSPF refresh interval does not change the OSPF behavior and weakens the OSPF performance. A new refresh mechanism, enhanced randomized refresh not only prolongs the OSPF refresh interval but also randomly sends refresh packets during the interval. This mechanism substantially reduces the packets sent by OSPF and avoids the traffic bursts due to the refresh mechanism. Tests on the VENUS simulator show that the number of refresh packets is reduced by one third compared with old refresh mechanism and that all the refresh packets are dispersed during the refresh interval. |
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| Keywords: | computer network routing protocol open shortest path first refresh network traffic |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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