{"title":"IP/MPLS骨干网的恢复措施:快速路由对链路故障的影响","authors":"Gomathi Ramachandran, Len Ciavattone, A. Morton","doi":"10.1109/IWQOS.2011.5931348","DOIUrl":null,"url":null,"abstract":"In this paper we show data plane restoration measurements for restoration under backbone link failures for a large network with IP/MPLS OSPF routing and also for the same backbone with Traffic Engineering (TE) and Fast Reroute (FRR) deployed. Our study is unique as we analyzed a significant quantity of measurements obtained from a production network over a 14-month period encompassing many link failures. The results show that TE/FRR restoration reduces outage-induced loss-duration substantially as compared to OSPF restoration. We also note that for both OSPF and FRR the course of restoration is not as simple as is commonly believed. A detailed study of the data shows that while loss-duration and overall duration is much reduced, TE/FRR results in path changes with no detectable loss over a period of seconds. Thus implementation of TE/FRR in a network results in a vast improvement in behavior for all data flows.","PeriodicalId":127279,"journal":{"name":"2011 IEEE Nineteenth IEEE International Workshop on Quality of Service","volume":"31 6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Restoration measurements on an IP/MPLS backbone: The effect of Fast Reroute on link failure\",\"authors\":\"Gomathi Ramachandran, Len Ciavattone, A. Morton\",\"doi\":\"10.1109/IWQOS.2011.5931348\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper we show data plane restoration measurements for restoration under backbone link failures for a large network with IP/MPLS OSPF routing and also for the same backbone with Traffic Engineering (TE) and Fast Reroute (FRR) deployed. Our study is unique as we analyzed a significant quantity of measurements obtained from a production network over a 14-month period encompassing many link failures. The results show that TE/FRR restoration reduces outage-induced loss-duration substantially as compared to OSPF restoration. We also note that for both OSPF and FRR the course of restoration is not as simple as is commonly believed. A detailed study of the data shows that while loss-duration and overall duration is much reduced, TE/FRR results in path changes with no detectable loss over a period of seconds. Thus implementation of TE/FRR in a network results in a vast improvement in behavior for all data flows.\",\"PeriodicalId\":127279,\"journal\":{\"name\":\"2011 IEEE Nineteenth IEEE International Workshop on Quality of Service\",\"volume\":\"31 6 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2011-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2011 IEEE Nineteenth IEEE International Workshop on Quality of Service\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IWQOS.2011.5931348\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 IEEE Nineteenth IEEE International Workshop on Quality of Service","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IWQOS.2011.5931348","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Restoration measurements on an IP/MPLS backbone: The effect of Fast Reroute on link failure
In this paper we show data plane restoration measurements for restoration under backbone link failures for a large network with IP/MPLS OSPF routing and also for the same backbone with Traffic Engineering (TE) and Fast Reroute (FRR) deployed. Our study is unique as we analyzed a significant quantity of measurements obtained from a production network over a 14-month period encompassing many link failures. The results show that TE/FRR restoration reduces outage-induced loss-duration substantially as compared to OSPF restoration. We also note that for both OSPF and FRR the course of restoration is not as simple as is commonly believed. A detailed study of the data shows that while loss-duration and overall duration is much reduced, TE/FRR results in path changes with no detectable loss over a period of seconds. Thus implementation of TE/FRR in a network results in a vast improvement in behavior for all data flows.
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