2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)最新文献_第2页

Content distribution in Elastic Optical Networks with Dedicated Path Protection 具有专用路径保护的弹性光网络中的内容分布

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014940

K. Walkowiak, Róża Goścień, Wojciech Kmiecik, M. Klinkowski

{"title":"Content distribution in Elastic Optical Networks with Dedicated Path Protection","authors":"K. Walkowiak, Róża Goścień, Wojciech Kmiecik, M. Klinkowski","doi":"10.1109/RNDM.2014.7014940","DOIUrl":"https://doi.org/10.1109/RNDM.2014.7014940","url":null,"abstract":"Recently, the Content Oriented Networking (CON) has become a recognized approach that is gaining extensive acceptance and deployment. At the same time, Elastic Optical Networks (EONs) are considered as a very promising approach for effective bandwidth allocation in optical networks. In this paper, we consider various approaches to content distribution in EON protected by the Dedicated Path Protection (DPP) scheme. We evaluate impact of these approaches on the performance of survivable EON with respect to CAPEX cost, power consumption and spectrum usage. We run numerical experiments on two representative network topologies with traffic patterns based on the Cisco predictions. The results show that the additional overhead of using the DPP protection in the EON for the analyzed performance metrics is from 2.1 to 3.5, depending on the metric and considered content delivery scenario. Moreover, the obtained results prove that the content delivery scenario has a large impact on the performance of the EON used in the physical layer and its suitable choice can bring up to 50% savings in all considered metrics.","PeriodicalId":299072,"journal":{"name":"2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132583937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Fragmentation-aware survivable Routing and Spectrum Assignment in elastic optical networks 弹性光网络中碎片感知存活路由和频谱分配

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014937

Christian Thiessen, C. Cavdar

{"title":"Fragmentation-aware survivable Routing and Spectrum Assignment in elastic optical networks","authors":"Christian Thiessen, C. Cavdar","doi":"10.1109/RNDM.2014.7014937","DOIUrl":"https://doi.org/10.1109/RNDM.2014.7014937","url":null,"abstract":"Transparent elastic optical networks (EON) allow provisioning connections with different bandwidth requirements in an efficient way. To achieve the high spectrum efficiency under dynamic traffic scenario, fragmentation-aware Routing, Modulation and Spectrum Assignment (RMSA) decisions is essential. Since fiber cuts are common, resiliency against single-link failures is another important topic. This can be provided efficiently through shared-path protection, which in turn complicates the connection provisioning problem. Unlike existing algorithms that decide first the primary and then the backup path, we introduce an algorithm in this paper that considers pairs of primary and backup paths. To select a candidate pair, we use a hybrid cost function that combines three different objectives: (1) the separation of primary and backup connections to different ends of the spectrum; (2) fragmentation-awareness as a pro-active provisioning objective trying to avoid fragmentation especially among primary resources and (3) maximization of shareability of backup resources among primary paths of link-disjoint connections. Using network level simulations in a scaled-down sample US network with load values of 190-240 Erlang, and bandwidth requests corresponding to 1% blocking probability, an average improvement of 79% compared to a recently presented reference algorithm is shown.","PeriodicalId":299072,"journal":{"name":"2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121062654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Reliability-aware virtual data center embedding 可靠性感知虚拟数据中心嵌入

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014945

Cheng Zuo, Hongfang Yu, V. Anand

引用次数: 7

Cost-Efficient network improvement to achieve maximum path diversity 成本效益的网络改进，以实现最大的路径多样性

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014952

Mohammed J. F. Alenazi, Egemen K. Çetinkaya, J. Sterbenz

引用次数: 10

On the impact of software failures on time division multiplexed Passive Optical Networks dependability 软件故障对时分多路无源光网络可靠性的影响

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014953

Alvaro Fernández, N. Stol

{"title":"On the impact of software failures on time division multiplexed Passive Optical Networks dependability","authors":"Alvaro Fernández, N. Stol","doi":"10.1109/RNDM.2014.7014953","DOIUrl":"https://doi.org/10.1109/RNDM.2014.7014953","url":null,"abstract":"Passive Optical Networks (PONs) are widely regarded as the best suited technology for deploying broadband access networks. As new services emerge, the dependability of PONs has become critical as end users expect access networks to be highly reliable. Although PONs dependability regarding hardware failures has been extensively studied, very little attention has been drawn to software failures in PONs. Chiefly, this paper aims at performing an exhaustive analysis of the effect of software failures in PONs dependability and failure-related costs. Additionally, hardware failures are also included for the sake of completeness and comparison. By applying Duane's model for reliability growth to current literature results, the PON software dependability is estimated as a function of the testing phase duration. Then, a Markov cost model, accounting for both hardware and software failures is developed and solved by means of Monte Carlo simulations. Hence, the effect of software failures in PONs asymptotic availability, failure impact and dependability-related costs is detailed; revealing to be of utmost importance. Moreover, how the testing process duration affects these three parameters is also pinpointed.","PeriodicalId":299072,"journal":{"name":"2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127683109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Risk mitigation in resilient networks 弹性网络中的风险缓解

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014927

P. Chołda, Piotr Guzik, Krzysztof Rusek

{"title":"Risk mitigation in resilient networks","authors":"P. Chołda, Piotr Guzik, Krzysztof Rusek","doi":"10.1109/RNDM.2014.7014927","DOIUrl":"https://doi.org/10.1109/RNDM.2014.7014927","url":null,"abstract":"This article proposes shifting the perspective for the design of resilient networks from cost-focused to one suited for business purposes. Risk engineering is used as a basis to enable us to monetarily express not only the cost of recovery, but also the impact of failures affecting connections (expressed with use of penalties imposed on an operator), and then to find the tradeoff between the cost of the assigned recovery methods and the improved level of resilience. During risk assessment, monetary quantification of penalties is applied with compensation policies, and business relevant risk measures are used. Then, risk response selection is based on various risk mitigation strategies (involving profit maximization, total benefit coverage, cost balance, and risk minimization) proposed in the security risk management. Looking for the cost-risk trade-off related to the assumed mitigation strategy is a complex optimization problem that cannot be modeled with deterministic linear programming. Therefore, to be able to choose recovery options, we develop a genetic algorithm. The results show diversity of recovery procedures selected for various selected mitigation strategies.","PeriodicalId":299072,"journal":{"name":"2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115580743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Power efficient service differentiation based on traffic-aware survivable elastic optical networks 基于流量感知的可生存弹性光网络的功率高效业务划分

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014936

Ioan Turus, A. M. Fagertun, L. Dittmann, A. Morea, D. Verchère, J. Kleist

{"title":"Power efficient service differentiation based on traffic-aware survivable elastic optical networks","authors":"Ioan Turus, A. M. Fagertun, L. Dittmann, A. Morea, D. Verchère, J. Kleist","doi":"10.1109/RNDM.2014.7014936","DOIUrl":"https://doi.org/10.1109/RNDM.2014.7014936","url":null,"abstract":"This study assesses the feasible energy savings when defining different service classes based on protection schemes in core optical networks. We propose a dedicated energy saving strategy for each of the service classes in order to minimize the overall power consumption of the network. Four Classes of Service are considered: platinum, gold, silver and best effort. Platinum connections benefit from a 1+1 protection scheme, gold connections and silver connections are assigned to a 1:1 protection with the difference that in case of gold connections the same pair of transponders is shared by the working and protection sections. Best-effort connections do not have any associated protection. Two scenarios are implemented and compared. The first, the baseline approach, does not take into account any traffic-aware strategies while the second one, the proposed approach, includes energy reduction strategies taking into account the sleep-mode capability of the opto-electronic devices as well as the elastic data-rate adaptation based on symbol-rate and modulation-format reconfigurations. The results show that in the baseline approach the power consumption is strongly dependent on the ratio between the different service classes while for the proposed approach the difference in power consumption is almost negligible. Moreover, in case of the proposed approach, silver service class can benefit for superior quality of service compared to the gold service class, due to the grooming mechanism.","PeriodicalId":299072,"journal":{"name":"2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130306875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Cost-constrained and centrality-balanced network design improvement 成本约束和中心平衡的网络设计改进

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014951

Mohammed J. F. Alenazi, Egemen K. Çetinkaya, J. Sterbenz

引用次数: 10

Gains of anycast demand relocation in survivable elastic optical networks 可生存弹性光网络中任意播需求重定位的研究进展

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014939

Róża Goścień, K. Walkowiak, M. Klinkowski

引用次数: 8

Using genetic algorithms to improve the reliability of dual homed wireless critical services 利用遗传算法提高双户无线关键业务的可靠性

2014 6th International Workshop on Reliable Networks Design and Modeling (RNDM) Pub Date : 2014-11-01 DOI: 10.1109/RNDM.2014.7014946

E. L. Følstad, B. Helvik

引用次数: 1