2012 IEEE Network Operations and Management Symposium最新文献_第10页

iTrack: Correlating user activity with system data iTrack:将用户活动与系统数据关联起来

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6212031

V. Mann, Anilkumar Vishnoi

{"title":"iTrack: Correlating user activity with system data","authors":"V. Mann, Anilkumar Vishnoi","doi":"10.1109/NOMS.2012.6212031","DOIUrl":"https://doi.org/10.1109/NOMS.2012.6212031","url":null,"abstract":"Human error has been identified one of the major factors behind system outages and network downtime in a number of previous research papers and surveys. Gartner statistics show that almost 40% of unplanned application downtime is caused due to operator errors such as unintentional changes to network configuration resulting in a network outage, patch installations, service restart, etc. Yet, system admin activities on production IT systems are rarely properly logged and monitored. Existing tools to track user activities either produce too much information without any hints of a potential outage scenario or too little information to be useful in a meaningful way. In this paper, we describe the design and implementation of iTrack - a framework for monitoring user activities and correlating them with system data. iTrack makes use of commonly available native monitoring and diagnostic utilities on operating systems to monitor systems events as well as system admin activity, correlates these two sets of information and categorizes the activity as potentially abnormal or harmful based on its impact on the system in terms of file system, network and process activities. We demonstrate the usefulness of iTrack through several use cases and real world examples such as detecting and diagnosing system outages in real time, conducting post mortem analysis of outages, and maintaining audit logs. Our experimental evaluation of iTrack confirms that its monitoring overhead in terms of CPU time, activity completion time and data generated is within the tolerance range of most production systems. In cases, where the overhead was found to be unacceptable, we detect the underlying cause and provide solutions. These solutions improve performance by up to 20% to 90%, in terms of managed server and iTrack server CPU utilization, respectively and by up to 2 times in terms of completion time of certain system admin activities on the managed server.","PeriodicalId":364494,"journal":{"name":"2012 IEEE Network Operations and Management Symposium","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122833692","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: 0

Protocol-level reconfigurations for infusion of resilience in distributed network services 在分布式网络服务中注入弹性的协议级重新配置

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6212053

K. Ravindran, M. Rabby

{"title":"Protocol-level reconfigurations for infusion of resilience in distributed network services","authors":"K. Ravindran, M. Rabby","doi":"10.1109/NOMS.2012.6212053","DOIUrl":"https://doi.org/10.1109/NOMS.2012.6212053","url":null,"abstract":"The paper describes a network service model where a service provider (SP) maintains multiple protocol modules to exercise the infrastructure resources under various environment conditions. Each protocol exhibits a certain degree of performance optimality and service resilience in distinct operating regions of the network infrastructure and the environment. During run-time, the SP selects one of the protocol modules that can meet the application-requested Quality of Service (QoS) obligation against the prevailing operating conditions. Under normal conditions when the external disturbances are benign (e.g., low packet loss in the network), an optimal usage of the network resources is important. Under adverse conditions however (e.g., heavy packet loss), a sustained access to the network service at some minimum acceptable level becomes more important than a resource-optimal service offering. Often, a resilient protocol incurs more resource usage to tackle the hostile environment conditions than a performance-conscious protocol tuned for the normal case operations. Accordingly, a protocol selection by the SP considers the trade-off between `service resilience' under extreme operating conditions and `resource optimality' under normal operations. Our model allows a dynamic switching from one protocol module to another at run-time based on the changing environment conditions.","PeriodicalId":364494,"journal":{"name":"2012 IEEE Network Operations and Management Symposium","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115549331","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: 3

Estimated zone configuration for Fixed Mobile Substitution by RF fingerprint 射频指纹替代固定移动设备的估计区域配置

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6211950

Jae-Hoon Kim, Juyeol Park

引用次数: 3

Towards network invariant fault diagnosis in MANETs via statistical modeling: The global strength of local weak decisions 基于统计建模的manet网络不变故障诊断:局部弱决策的全局强度

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6212018

A. Vashist, R. Izmailov, K. Manousakis, R. Chadha, C. Chiang, C. Serban, S. Ali

{"title":"Towards network invariant fault diagnosis in MANETs via statistical modeling: The global strength of local weak decisions","authors":"A. Vashist, R. Izmailov, K. Manousakis, R. Chadha, C. Chiang, C. Serban, S. Ali","doi":"10.1109/NOMS.2012.6212018","DOIUrl":"https://doi.org/10.1109/NOMS.2012.6212018","url":null,"abstract":"Due to its obvious importance, fault detection and localization is a well-studied problem in communication networks, as attested by the many techniques designed to address this problem. The inherent variability, limited component reliability, and constrained resources of MANETs (Mobile Ad hoc Networks) make the problem not just more important, but also critical. Practical development and deployment considerations imply that fault detection and localization methods must i) avoid relying on overly detailed models of network protocols and traffic assumptions and instead rely on actual cross-layer measurements/observations, and ii) be applicable across different network scales and topologies with minimum adjustments. This paper demonstrates the feasibility of such goals, and proposes an important and as yet unexplored approach to fault management in MANETs: network-invariant fault detection, localization and diagnosis with limited knowledge of the underlying network and traffic models. We show how fault management methods can be derived by observing statistical network/traffic measurements in one network, and subsequently applied to other networks with satisfactory performance. We demonstrate that a carefully designed but widely applicable set of local and weak global indicators of faults can be efficiently aggregated to produce highly sensitive and specific methods that perform well when applied to MANETs with varying sizes, topologies, and traffic matrices.","PeriodicalId":364494,"journal":{"name":"2012 IEEE Network Operations and Management Symposium","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128599802","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

A QoS architecture for provisioning high quality in intelligent transportation services 用于提供高质量智能交通服务的QoS体系结构

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6211964

H. Alshaer, T. Ernst, A. D. L. Fortelle

引用次数: 4

Self-management of mobile clouds in advanced wireless networks 先进无线网络中移动云的自我管理

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6212029

E. Karami, S. Glisic

{"title":"Self-management of mobile clouds in advanced wireless networks","authors":"E. Karami, S. Glisic","doi":"10.1109/NOMS.2012.6212029","DOIUrl":"https://doi.org/10.1109/NOMS.2012.6212029","url":null,"abstract":"In this paper, we present a framework for self-management of mobile clouds, based on self organized distributed coalition formation process for spectrum sharing in interference channel for large scale ad hoc networks. In this approach we use concept of coalition clusters within the network where mutual interdependency between different clusters is characterized by the concept of spatial network correlation. Then by using stochastic models of the process we give up some details characteristic for coalition game theory in order to be able to include some additional parameters for network scaling. Applications of this model are: a) Estimation of average time τ to reach grand coalition and its variance στ2 through closed form equations. These parameters are important in designing the process in dynamic environment. b) Managing the dimensioning the coalition cluster within the network c) Modelling the network spatial correlation characterizing mutual visibility of the interfering links. d) Modelling of the effect of the new link activation/inactivation on the coalition forming process. e) Modelling the effect of link mobility on the coalition forming process.","PeriodicalId":364494,"journal":{"name":"2012 IEEE Network Operations and Management Symposium","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130657100","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: 3

A service optimization model on convergent network-based service delivery platform 基于融合网络的业务交付平台的业务优化模型

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6211997

Junping Wang, Q. Zhu, Van Ma

引用次数: 1

Hierarchical resource model-driven performance analysis with dynamic data control 分层资源模型驱动的动态数据控制性能分析

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6211996

M. Miyazawa

{"title":"Hierarchical resource model-driven performance analysis with dynamic data control","authors":"M. Miyazawa","doi":"10.1109/NOMS.2012.6211996","DOIUrl":"https://doi.org/10.1109/NOMS.2012.6211996","url":null,"abstract":"One of the key issues confronting today's telecom carriers is how to rapidly detect variation in service quality to improve customer satisfaction. Since the volume of data required for performance analysis has been increasing due to diversification of network environments, the time required to detect any variation in the network condition has also grown. Due to the complexity of managed data, network services are at a risk of degrading customer experiences. Accordingly, to enable instant performance analysis, we present lightweight performance analysis to dynamically change the monitoring network resource via our proposed two functions. One is a continuous rule-creation function, which creates an analysis rule to change a monitoring resource based on hierarchical network topology and the network condition. The other is a data control function, which can suppress performance data by controlling a database based on the analysis rule. These functions can facilitate not only understanding of network quality, but also reduction of the analysis processing load. To evaluate our approach, a mechanism implemented into a prototype performance analysis system was successfully demonstrated in a network testbed. Its effectiveness was validated in that the proposed performance analysis mechanism reduced CPU utilization by one-third compared to the existing performance analysis approach.","PeriodicalId":364494,"journal":{"name":"2012 IEEE Network Operations and Management Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128201879","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

Impact analysis of hierarchical transitions in multi-hop clustered networks 多跳集群网络中层次转换的影响分析

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6211978

David Palma, M. Curado

引用次数: 1

An SLA-driven framework for dynamic multimedia content delivery federations 用于动态多媒体内容交付联合的sla驱动框架

2012 IEEE Network Operations and Management Symposium Pub Date : 2012-04-16 DOI: 10.1109/NOMS.2012.6212058

J. Famaey, Steven Latré, T. Wauters, F. Turck

{"title":"An SLA-driven framework for dynamic multimedia content delivery federations","authors":"J. Famaey, Steven Latré, T. Wauters, F. Turck","doi":"10.1109/NOMS.2012.6212058","DOIUrl":"https://doi.org/10.1109/NOMS.2012.6212058","url":null,"abstract":"Recently, the Internet has become a popular platform for the delivery of multimedia content. However, its best effort delivery approach is ill-suited to guarantee the stringent Quality of Service (QoS) requirements of many existing multimedia services, which results in a significant reduction of the Quality of Experience. This paper presents a solution to these problems, in the form of a framework for dynamically setting up federations between the stakeholders involved in the content delivery chain. More specifically, the framework provides an automated mechanism to set up end-to-end delivery paths from the content provider to the access Internet Service Providers (ISPs), which act as its direct customers and represent a group of end-users. Driven by Service Level Agreements (SLAs), QoS contracts are automatically negotiated between the content provider, the access ISPs, and the intermediary network domains along the delivery paths. These contracts capture the delivered QoS and resource reservation costs, which are subsequently used in the price negotiations between content provider and access ISPs. Additionally, it supports the inclusion of cloud providers within the federations, supporting on-the-fly allocation of computational and storage resources. This allows the automatic deployment and configuration of proxy caches along the delivery paths, which potentially reduce delivery costs and increase delivered quality.","PeriodicalId":364494,"journal":{"name":"2012 IEEE Network Operations and Management Symposium","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114282406","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