Ether net Ring Protection for ITU-T G.8032  

作　　者：Wang Bin Wang Wennai 

机构地区：[1]College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, P. R. China [2]Key Laboratory of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications), Ministry of Education, Nanjing 210003, P. R. China

出　　处：《China Communications》2012年第11期87-97,共11页中国通信（英文版）

基　　金：supported partially by National Science and Technology Major Project of the Ministry of Science and Technology of China under Grant No.2011ZX03005-004-03; a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions-Information and Communication Engineering,Natural Science Foundation of the Higher Education Institutions of Jiangsu Province,China under Grant No.10KJA510037; Open Research Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology（Nanjing University of Posts and Telecommunications）,Ministry of Education under Grant No.NYKL201108; Natural Science Foundation of Nanjing University of Posts and Telecommunications under Grant No.NY209002

摘　　要：Ethernet Ring Protection (ERP) introduced by ITU-T G.8032 Recommendation is a new type of packet-switched network protection technology, which can provide ring automatic protection switch. However, the Filtering Database (FDB) flush method adopted in the current ERP standard has the drawback of introducing a large amount of transient traffic overshoot caused by flooded Ethernet frames right after protection switching. In this article, we propose a G.8032 ERP scheme that uses FDB flush based on area to resolve this issue and investigate how the proposed scheme deals with the traffic flooding problem. The theoretical analysis and simulation show that the proposed scheme can effectively improve the performance of the Ethernet ring by decreasing the unnecessary FDB flush in comparison with the existing approaches.Ethernet Ring Protection （ERP） introduced by ITU-T G.8032 Recommendation is a new type of packet-switched network protection technology, which can provide ring automatic protection switch. However, the Filtering Database （FDB） flush method adopted in the current ERP standard has the drawback of introducing a large amount of transient traffic overshoot caused by flooded Ethernet frames right after protection switching. In this article, we propose a G.8032 ERP scheme that uses FDB flush based on area to resolve this issue and investigate how the proposed scheme deals with the traffic flooding problem. The theoretical analysis and simulation show that the proposed scheme can effectively improve the performance of the Ethernet ring by decreasing the unnecessary FDB flush in comparison with the existing approaches.

关 键 词：carrier ethernet ERP FDB flush markov chain 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] TN915.1[自动化与计算机技术—计算机科学与技术]