12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops最新文献_第3页

A hierarchical model to evaluate quality of experience of online services hosted by cloud computing 基于云计算的在线服务体验质量评价的层次模型

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990680

Haiyang Qian, D. Medhi, Kishor S. Trivedi

引用次数: 53

User behavior anticipation in P2P live video streaming systems through a Bayesian network 基于贝叶斯网络的P2P直播视频流系统用户行为预测

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990709

I. Ullah, G. Doyen, Grégory Bonnet, D. Gaïti

{"title":"User behavior anticipation in P2P live video streaming systems through a Bayesian network","authors":"I. Ullah, G. Doyen, Grégory Bonnet, D. Gaïti","doi":"10.1109/INM.2011.5990709","DOIUrl":"https://doi.org/10.1109/INM.2011.5990709","url":null,"abstract":"In recent years, Peer-to-Peer (P2P) architectures have emerged as a scalable, low cost and easily deployable solution for live video streaming applications. In these systems, the load of video transmission is distributed over end-hosts by enabling them to relay the content to each other. Since end-hosts are controlled by users, their behavior directly impact the performance of the system. To understand it, massive measurement campaigns covering large-scale systems and long time periods have been performed. In this paper, we gathered and synthesized results obtained through these measurements and propose a Bayesian network that captures and integrates all of them into a synthetic model. We apply this model to the anticipation of peer departures which is an important challenge toward the performance improvement of these systems and especially churn resilience. The validation of our proposal is performed through intensive simulations that consider a streaming system composed of thousand users over two hundred days. We especially study two deployment scenarios: a system-scale one and a local one. We also compare our proposal with two standard estimators and we show under which conditions an estimator outperforms the others.","PeriodicalId":433520,"journal":{"name":"12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127510422","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: 9

A middleware-based approach to supporting trust-based service selection 支持基于信任的服务选择的基于中间件的方法

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990540

C. Yew, H. Lutfiyya

引用次数: 7

Heterogeous resource description and management in generic resource federation frameworks 通用资源联合框架中的异构资源描述和管理

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990582

S. Wahle, T. Magedanz, S. Fox, Eamonn Power

引用次数: 7

SLA-aware placement of multi-virtual machine elastic services in compute clouds 支持sla的多虚拟机弹性服务在计算云中的部署

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990687

David Breitgand, Amir Epstein

{"title":"SLA-aware placement of multi-virtual machine elastic services in compute clouds","authors":"David Breitgand, Amir Epstein","doi":"10.1109/INM.2011.5990687","DOIUrl":"https://doi.org/10.1109/INM.2011.5990687","url":null,"abstract":"Elastic services comprise multiple virtualized resources that can be added and deleted on demand to match variability in the workload. A Service owner profiles the service to determine its most appropriate sizing under different workload conditions. This variable sizing is formalized through a service level agreement (SLA) between the service owner and the cloud provider. The Cloud provider obtains maximum benefit when it succeeds to fully allocate the resource set demanded by the elastic service subject to its SLA. Failure to do so may result in SLA breach and financial losses to the provider. We define a novel combinatorial optimization problem called elastic services placement problem (ESPP) to maximize the provider's benefit from SLA compliant placement. We observe that ESPP extends the generalized assignment problem (GAP), which is a well studied combinatorial optimization problem. However, ESPP turns out to be considerably harder to solve as it does not admit a constant factor approximation. We show that using a simple transformation, ESPP can be presented as a multi-unit combinatorial auction. We further present a column generation method to obtain near optimal solutions for ESPP for large data centers where exact solutions cannot be obtained in a reasonable amount of time using a direct integer programming formulation. We demonstrate the feasibility of our approach through an extensive simulation study. Our results show that we are capable of consistently obtaining good solutions in a time efficient manner. Moreover, if one is willing to trade precision to gain in computation time, our method allows to explicitly manage this tradeoff.","PeriodicalId":433520,"journal":{"name":"12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128768989","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: 85

Initial thoughts on business-driven IT management challenges in Cloud computing providers 关于云计算提供商中业务驱动的IT管理挑战的初步想法

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990507

J. O. Fitó, Jordi Guitart

{"title":"Initial thoughts on business-driven IT management challenges in Cloud computing providers","authors":"J. O. Fitó, Jordi Guitart","doi":"10.1109/INM.2011.5990507","DOIUrl":"https://doi.org/10.1109/INM.2011.5990507","url":null,"abstract":"Nowadays Cloud computing is recognized as the most emerging computing paradigm. Because of its promising benefits, every day more and more enterprises are relying on Cloud systems. Furthermore, new Cloud business models are appearing, most of them within the SaaS marketplace, which fully depend on PaaS and IaaS providers. In any case, the expectation from businesses that IT (Cloud) services and infrastructures should bring them closer to the achievement of their Business-Level Objectives (BLOs) is spreading. Due to this fact, the presence in Cloud providers of a self-management of Cloud services and infrastructures driven by business-level aspects is mandatory. In this direction, the Business-Driven IT Management (BDIM) discipline has been evolving as the most promising way in the sense of aligning IT (low-level) management decisions with business-level objectives coming from providers themselves, as well as from their users. In this paper, we expose several BDIM challenges on the Cloud computing paradigm. Consequently, we outline key issues for the inclusion of BDIM-related features into the core operation of Cloud providers.","PeriodicalId":433520,"journal":{"name":"12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115296942","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: 8

Leveraging IT project lifecycle data to predict support costs 利用IT项目生命周期数据来预测支持成本

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990698

B. Dalmazo, Weverton Cordeiro, A. L. R. D. Sousa, Juliano Araujo Wickboldt, R. C. Lunardi, R. Santos, L. Gaspary, L. Granville, C. Bartolini, M. Hickey

引用次数: 3

Practical IPv6 monitoring-challenges and techniques 实用的IPv6监控-挑战和技术

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990647

M. Grégr, P. Matoušek, M. Svéda, Tomas Podermanski

{"title":"Practical IPv6 monitoring-challenges and techniques","authors":"M. Grégr, P. Matoušek, M. Svéda, Tomas Podermanski","doi":"10.1109/INM.2011.5990647","DOIUrl":"https://doi.org/10.1109/INM.2011.5990647","url":null,"abstract":"Network monitoring is an essential task of network management. Information obtained by monitoring devices gives a real picture of the network in production including transmitted data volumes, top hosts, a list of frequently used applications etc. Deep analysis of data collected by monitoring can reveal network attacks or detect misuse of network services. In addition, Data Retention Act requires each ISP to track user's activities. Protocol IPv6 puts new challenges for network administrators in the context of user identification. Unlike IPv4, an IPv6 address no longer uniquely identifies a user or PC. IPv6 address can be randomly generated and keeps changing in time. PCs with IPv6 stack can also communicate via predefined tunnels over IPv4 infrastructure. That tunneled traffic mostly bypasses network security implemented via firewalls. In this paper, we identify major monitoring and security issues of IPv6 connectivity and propose a solution based on SNMP and Netflow data that helps to uniquely identify users. The solution requires an extended set of monitoring data to be collected from network devices. We present a new data structure based on extended Netflow records. Feasibility of the approach is demonstrated on the Brno University of Technology (BUT) campus network.","PeriodicalId":433520,"journal":{"name":"12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122655798","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: 8

VoIP quality monitoring in LTE femtocells LTE飞蜂窝网络电话质量监控

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990552

C. Olariu, Mícheál Ó Foghlú, Philip Perry, L. Murphy

引用次数: 19

BALG: Bypassing Application Layer Gateways using multi-staged encrypted shellcodes BALG:使用多级加密shell代码绕过应用层网关

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops Pub Date : 2011-05-23 DOI: 10.1109/INM.2011.5990539

S. Roschke, Feng Cheng, C. Meinel

引用次数: 0