通信学报 ›› 2013, Vol. 34 ›› Issue (Z2): 17-22.doi: 10.3969/j.issn.1000-436x.2013.Z2.005

• 网络工程 • 上一篇    下一篇

AS路径环路的研究

张圣林1,2,刘莹1,2   

  1. 1 清华大学 网络科学与网络空间研究院,北京 100084
    2 清华大学 清华信息科学与技术国家实验室,北京 100084
  • 出版日期:2013-12-25 发布日期:2017-06-16
  • 基金资助:
    国家自然科学基金资助项目;国家重点基础研究发展计划(“973”计划)基金资助项目;国家重点基础研究发展计划(“973”计划)基金资助项目

Analysis of AS path looping

Sheng-lin ZHANG1,2,Ying LIU1,2   

  1. 1 Institute for Network Science and Cyberspace,Tsinghua University,Beijing 100084,China
    2 Tsinghua National Laboratory for Information Science and Technology,Tsinghua University,Beijing 100084,China
  • Online:2013-12-25 Published:2017-06-16
  • Supported by:
    The National Natural Science Foundation of China;The National Basic Research Program of China (973 Program);The National Basic Research Program of China (973 Program)

摘要:

AS(自治域)路径环路是指在一个AS路径中出现相同的AS号且这2个或多个AS号是不相邻的。通过对RouteViews中统计的全球路由数据进行处理分析,统计了从2011年6月1日到2013年5月31日AS路径环路在IPv4和IPv6中每天发生的数量以及其在总路由条目中所占的比例。另外,统计了AS路径环路的持续时间分布以及前缀长度的分布。根据统计的数据,分析了AS路径环路发生的原因:路由信息不一致、跨国企业、有意或无意的错误配置,井为BGP的配置提供了建议。

关键词: AS路径, RouteViews, 路径环路, IPv6

Abstract:

AS (autonomous system) path looping occurs when there are two or more same AS numbers in a AS path vector and these numbers are not adjacent to each other.After processing and analyzing the global route data from RouteViews,statistics of the total number and the ratio of AS path looping conflicts were kept every day from June 1,2011 to May 31,2013.What’s more,distribution of the duration of AS path looping conflicts and the length of prefixes where AS path looping occurs were also analyzed.On the basis of these statistics,some possible causes of AS path looping were discussed,including routing information inconsistency,multi-national companies and faulty or malicious misconfiguration.What’s more,some advices were also provided for the configuration of BGP protocol.

Key words: AS path, RouteViews, path looping, IPv6

No Suggested Reading articles found!