2015 11th International Conference on Network and Service Management (CNSM)最新文献

Taking the sting out of flow update peaks in software-defined service chaining 消除软件定义服务链中的流更新高峰带来的麻烦

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367380

Jeremias Blendin, Julius Rückert, Sascha Bleidner, D. Hausheer

{"title":"Taking the sting out of flow update peaks in software-defined service chaining","authors":"Jeremias Blendin, Julius Rückert, Sascha Bleidner, D. Hausheer","doi":"10.1109/CNSM.2015.7367380","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367380","url":null,"abstract":"Dynamic network service chaining allows network operators to apply network services to customer traffic on demand and in a highly flexible manner. SDN and particularly OpenFlow-based approaches have been presented that exploit the flexibility and feature richness of OpenFlow for service chaining in data center settings. These systems often use network architectures similar to MPLS, where network traffic is processed at the network edges and the network core conducts simple packet forwarding only. This approach is suitable for many use cases due to the complementary characteristics of the hardware devices used in the core and the virtual switches used at the edge on virtualization hosts. Yet, this leads to a concentration of processing flow updates solely at the network edges, which can cause lowered QoS during flow update peaks, e.g. when a virtualization host fails. To tackle this problem, in this paper a concept is presented and evaluated that offloads OpenFlow rule updates from software-based edge switches to exploit hitherto unused resources on hardware switches in the core of the network. Furthermore, an analytical model is presented that allows describing the expected gain of the approach based on characteristics of the used OpenFlow devices.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126134001","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

Towards a dynamic SDN virtualization layer: Control path migration protocol 迈向动态SDN虚拟化层:控制路径迁移协议

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367382

A. Basta, Andreas Blenk, Hassib Belhaj Hassine, W. Kellerer

{"title":"Towards a dynamic SDN virtualization layer: Control path migration protocol","authors":"A. Basta, Andreas Blenk, Hassib Belhaj Hassine, W. Kellerer","doi":"10.1109/CNSM.2015.7367382","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367382","url":null,"abstract":"Virtualization of software defined networks enables tenants to bring their own controller and manage their virtual resources with the full programmability provided by Software Defined Networking (SDN). Distributed SDN hypervisors are proposed to provide an efficient platform for the virtualization of physical SDN networks. They address the issue of scalability that a centralized hypervisor could suffer from. As virtualization provides the possibility to change virtual SDN networks on run time, a hypervisor layer needs efficient mechanisms to dynamically adapt to the changing requirements. Existing proposals provide only a static configuration setup for their distribution of the hypervisor instances. However, in order to satisfy the dynamics of virtual SDN networks, management protocols are needed to support dynamic changes. In this paper, we propose a control path migration protocol for distributed hypervisors. Such protocol is needed to support the dynamic adaptation of the virtualization layer. Our protocol is providing the missing procedure that allows a dynamic change of control connections between virtual SDN networks and the tenants' controllers, respectively. We provide a proof of concept implementation for our proposal. Through measurements in a real testbed setup, we show that our protocol is efficient in terms of control latency overhead and provides transparency to the controllers of the virtual SDN networks.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"54 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900028","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: 32

An announcement-based caching approach for video-on-demand streaming 基于公告的视频点播流缓存方法

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/cnsm.2015.7367376

Maxim Claeys, N. Bouten, D. D. Vleeschauwer, W. V. Leekwijck, Steven Latré, F. Turck

{"title":"An announcement-based caching approach for video-on-demand streaming","authors":"Maxim Claeys, N. Bouten, D. D. Vleeschauwer, W. V. Leekwijck, Steven Latré, F. Turck","doi":"10.1109/cnsm.2015.7367376","DOIUrl":"https://doi.org/10.1109/cnsm.2015.7367376","url":null,"abstract":"The growing popularity of over the top (OTT) video streaming services has led to a strong increase in bandwidth capacity requirements in the network. By deploying intermediary caches, closer to the end-users, popular content can be served faster and without increasing backbone traffic. Designing an appropriate replacement strategy for such caching networks is of utmost importance to achieve high caching efficiency and reduce the network load. Typically, a video stream is temporally segmented into smaller chunks that can be accessed and decoded independently. This temporal segmentation leads to a strong relationship between consecutive segments of the same video. Therefore, caching strategies have been developed, taking into account the temporal structure of the video. In this paper, we propose a novel caching strategy that takes advantage of clients announcing which videos will be watched in the near future, e.g., based on predicted requests for subsequent episodes of the same TV show. Based on a Video-on-Demand (VoD) production request trace, the presented algorithm is evaluated for a wide range of user behavior and request announcement models. In a realistic scenario, a performance increase of 11% can be achieved in terms of hit ratio, compared to the state-of-the-art.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126490347","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

Computing resource transformation, consolidation and decomposition in hybrid clouds 混合云中计算资源的转换、整合与分解

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367350

Jinho Hwang

{"title":"Computing resource transformation, consolidation and decomposition in hybrid clouds","authors":"Jinho Hwang","doi":"10.1109/CNSM.2015.7367350","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367350","url":null,"abstract":"With the promise of providing flexible and elastic computing resources on demand, the cloud computing has been attracting enterprises and individuals to migrate workloads in the legacy environment to the public/private/hybrid clouds. Also, cloud customers want to migrate between cloud providers with different requirements such as cost, performance, and manageability. However the workload migration is often interpreted as an image migration or re-installation/data copying as the exact snapshot of the source machine. Also the various cloud platforms and service models are rarely taken into consideration during the migration analytics. Therefore, although the expectation has risen with various requirements on the target cloud platforms and environments, the cloud migration techniques have not provided enough options that can satisfy the various requirements. In this paper we propose a model to tackle the migration challenges that transform one resource into same or another resource in hybrid clouds. We formulate the problem as a constraint satisfaction problem, and iteratively decompose the server components and consolidate the servers. The ultimate goal is to recommend the optimal target cloud platform and environment with the minimum cost. Through the evaluation of the proposed model using the real enterprise dataset (up to 2012 machines), we prove that the proposed model satisfies the goal. We show that when migrating into virtualized cloud environments, the thorough resource planning can reduce 16% of current resources, about 5%-10% servers can be consolidated, and more than 60% servers are possible candidates for server decomposition.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133320206","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

SiMPLE: Survivability in multi-path link embedding 简单:多路径链接嵌入的生存性

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367361

Md Mashrur Alam Khan, Nashid Shahriar, Reaz Ahmed, R. Boutaba

{"title":"SiMPLE: Survivability in multi-path link embedding","authors":"Md Mashrur Alam Khan, Nashid Shahriar, Reaz Ahmed, R. Boutaba","doi":"10.1109/CNSM.2015.7367361","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367361","url":null,"abstract":"Internet applications are deployed on the same network infrastructure, yet they have diverse performance and functional requirements. The Internet was not originally designed to support the diversity of current applications. Network Virtualization can enable heterogeneous applications and network architectures to coexist without interference on the same infrastructure. Embedding a Virtual Network (VN) into a physical network is a fundamental problem in Network Virtualization. A VN Embedding that aims to survive physical (e.g., link) failures is known as the Survivable Virtual Network Embedding (SVNE). A key challenge in the SVNE problem is to ensure VN survivability with minimal resource redundancy. To address this challenge, we propose SiMPLE. By exploiting path diversity in the physical network, SiMPLE provides guaranteed VN survivability against single link failure. In addition, SiMPLE produces highly surviv-able VN embeddings in presence of multiple link failures while incurring very low resource redundancy. We provide an ILP formulation for this problem and implement it using GLPK. We also propose a greedy algorithm to solve larger instances of the problem. Simulation results show that our solution outperforms full backup and shared backup schemes for SVNE, and produces near-optimal results.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131299486","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: 30

VGuard: A distributed denial of service attack mitigation method using network function virtualization VGuard:一种基于网络功能虚拟化的分布式拒绝服务攻击缓解方法

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367340

Carol J. Fung, Bill McCormick

{"title":"VGuard: A distributed denial of service attack mitigation method using network function virtualization","authors":"Carol J. Fung, Bill McCormick","doi":"10.1109/CNSM.2015.7367340","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367340","url":null,"abstract":"Distributed denial of service (DDoS) attacks have caused tremendous damage to ISPs and online services. They can be divided into attacks using spoofed IPs and attacks using real IPs (botnet). Among them the attacks from real IPs are much harder to mitigate since the attack traffic can be fabricated to be similar to legitimate traffic. The corresponding DDoS defence strategies proposed in past few years have not been proven to be highly effective due to the limitation of participating devices. However, the emergence of the next generation networking technologies such a network function virtualization (NFV) provide a new opportunity for researchers to design DDoS mitigation solutions. In this paper we propose VGuard, a dynamic traffic engineering solution based on prioritization, which is implemented on a DDoS virtual network function (VNF). The flows from the external zone are directed to different tunnels based on their priority levels. This way trusted legitimate flows are served with guaranteed quality of service, while attack flows and suspicious flows compete for resources with each other. We propose two methods for flow direction: the static method and the dynamic method. We evaluated the performance of both methods through simulation. Our results show that both methods can effectively provide satisfying service to trusted flows under DDoS attacks, and both methods have their pros and cons under different situations.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115383852","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: 36

On the placement of management and control functionality in software defined networks 软件定义网络中管理和控制功能的放置

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367383

D. Tuncer, M. Charalambides, S. Clayman, G. Pavlou

引用次数: 8

Deterministic OpenFlow: Performance evaluation of SDN hardware for avionic networks 确定性OpenFlow:航空电子网络SDN硬件性能评估

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367385

Peter Heise, Fabien Geyer, R. Obermaisser

引用次数: 32

Behind the NAT- A measurement based evaluation of cellular service quality 背后是基于NAT- A测量的蜂窝服务质量评价

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367363

F. Kaup, Foivos Michelinakis, N. Bui, J. Widmer, K. Wac, D. Hausheer

{"title":"Behind the NAT- A measurement based evaluation of cellular service quality","authors":"F. Kaup, Foivos Michelinakis, N. Bui, J. Widmer, K. Wac, D. Hausheer","doi":"10.1109/CNSM.2015.7367363","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367363","url":null,"abstract":"Mobile applications such as VoIP, (live) gaming, or video streaming have diverse QoS requirements ranging from low delay to high throughput. The optimization of the network quality experienced by end-users requires detailed knowledge of the expected network performance. Also, the achieved service quality is affected by a number of factors, including network operator and available technologies. However, most studies focusing on measuring the cellular network do not consider the performance implications of network configuration and management. To this end, this paper reports about an extensive data set of cellular network measurements, focused on analyzing root causes of mobile network performance variability. Measurements conducted over four weeks in a 4G cellular network in Germany show that management and configuration decisions have a substantial impact on the performance. Specifically, it is observed that the association of mobile devices to a Point of Presence (PoP) within the operator's network can influence the end-to-end RTT by a large extent. Given the collected data a model predicting the PoP assignment and its resulting RTT leveraging Markov Chain and machine learning approaches is developed. RTT increases of 58% to 73% compared to the optimum performance are observed in more than 57% of the measurements.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116479313","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: 7

Dictyogram: A statistical approach for the definition and visualization of network flow categories 字典图:用于定义和可视化网络流类别的统计方法

2015 11th International Conference on Network and Service Management (CNSM) Pub Date : 2015-11-09 DOI: 10.1109/CNSM.2015.7367362

David Muelas, Miguel Gordo, J. García-Dorado, J. D. Vergara

{"title":"Dictyogram: A statistical approach for the definition and visualization of network flow categories","authors":"David Muelas, Miguel Gordo, J. García-Dorado, J. D. Vergara","doi":"10.1109/CNSM.2015.7367362","DOIUrl":"https://doi.org/10.1109/CNSM.2015.7367362","url":null,"abstract":"Network managers have to deal with tons of measurement data provided by monitoring systems. Such data is difficult to both process and translate into concrete management actions. As an attempt to make managerial work easier, we propose a novel statistical approach that summarizes the behavior of network flow characteristics - e.g., flow sizes or durations. Bearing in mind that losses in the summarized information can lead to restricted or even erroneous conclusions, our approach solves this by exploiting the probability integral transform theorem. This theorem allows the definition of a set of intervals, mapped into concrete categories, where the number of flows according to a given characteristic would be uniformly distributed among categories. This eases the use of both statistical tests and simple visual inspection to detect changes in the behavior of the characteristic under analysis, as typically abrupt changes are understood as signs of intrusion, malfunction or other types of anomalies. This proposal gave rise to the visualization and analytical framework Dictyogram, which has been applied to monitor the Spanish Academic Network - more than one million users. Its results are shown as a case study assessing the usefulness of our proposal.","PeriodicalId":207635,"journal":{"name":"2015 11th International Conference on Network and Service Management (CNSM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125795472","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: 7