Active Techniques for Available Bandwidth Estimation: Comparison and Application

Botta, Alessio; Davy, Alan; Meskill, Brian; Aceto, Giuseppe

doi:10.1007/978-3-642-36784-7_2

Cited by 11 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the available bandwidth). In the last decade, many techniques and tools for measuring the end-to-end available bandwidth in a network path have been proposed, evaluated, and compared [8]. Under the assumption that end-hosts are not a bottleneck for the communication, a simple yet effective -although intrusive -approach to estimate the maximum throughput is the injection of synthetic traffic [16].…”

Section: Related Workmentioning

confidence: 99%

Measuring network throughput in the cloud: The case of Amazon EC2

et al. 2015

Self Cite

View full text Add to dashboard Cite

Cloud providers employ sophisticated virtualization techniques and strategies for sharing resources among a high number of largely uncoordinated and mutually untrusted customers. The shared networking environment, in particular, dictates the need for mechanisms to partition network resources among virtual machines. At the same time, the performance of applications deployed over these virtual machines may be heavily impacted by the performance of the underlying network, and therefore by such mechanisms. Nevertheless, due to security and commercial reasons, providers rarely provide detailed information on network organization, performance, and mechanisms employed to regulate it. In addition, the scientific literature only provides a blurring image of the network performance inside the cloud. The few available pioneer works marginally focus on this aspect, use different methodologies, operate in few limited scenarios, or report conflicting results.In this paper, we present a detailed analysis of the performance of the internal network of Amazon EC2, performed by adopting a non-cooperative experimental evaluation approach (i.e. not relying on provider support). Our aim is to provide a quantitative assessment of the networking performance as a function of the several variables available, such as geographic region, resource price or size. We propose a detailed methodology to perform this kind of analysis, which we believe is essential in a such complex and dynamic environment. During this analysis we have discovered and analyzed the limitations enforced by Amazon over customer traffic in terms of maximum throughput allowed. Thanks to our work it is possible to understand how the complex mechanisms enforced by the provider in order to manage its infrastructure impact the performance perceived by the cloud customers and potentially tamper with monitoring and controlling approaches previously proposed in literature. Leveraging our knowledge of the bandwidth-limiting mechanisms, we then present a clear picture of the maximum throughput achievable in Amazon EC2 network, shedding light on when and how such maximum can be achieved and at which cost.

show abstract

Section: Related Workmentioning

confidence: 99%

Measuring network throughput in the cloud: The case of Amazon EC2

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…There have been several studies proposing bandwidth measurement techniques and tools to be used by the overlay nodes (20). In order to calculate availability, we rely on the availability model of a bidirectional line proposed in (21).…”

Section: Architectural Framework: a Sdn-based Overlay Networkmentioning

confidence: 99%

Adaptive and reliable multipath provisioning for media transfer in SDN-based overlay networks

Sahhaf

Tavernier

Colle

et al. 2017

Computer Communications

View full text Add to dashboard Cite

Traditional routing in the Internet is best-effort which makes it challenging for video streaming since no throughput, jitter, delay or loss rate is guaranteed. As different paths have different characteristics, path differentiation such as multipath routing is a promising technique to be used for meeting QoS requirements of media-intensive applications. Using overlay networks different paths are offered which enable more flexibility in QoS and congestion control while the reliability of the connections is enhanced.Software Defined Networking (SDN) is known to be a promising solution to the problems of routing as it provides fine-grained control over packet handling. Relying on SDN, we propose an adaptive multipath provisioning scheme ensuring maximal bandwidth and resiliency of media transfer in overlay networks. The scheme is a time slot-based approach which dynamically finds multipaths. It relies on both active probing and traffic prediction.The experimental results confirm that a more accurate prediction together with more frequent probing lead to fewer number of path re-calculation and also indicate that the proposed scheme enhances the reliability of connections while a more balanced load is achieved in the network compared to the shortest path-based scheme.

show abstract

“…Examples of probe rate tools include PathLoad and PathChirp. The performance of most of active ABW estimation tools currently available is scenario-dependent and require non-trivial calibration [19,20]. In our approach we use a passive technique taking advantage of the NOS in the architecture of SDN.…”

Section: Background and Related Workmentioning

confidence: 99%

“…For further reference, we collected the used hardware and software versions in Tab. 1. which is frequently used as a testbed for testing ABW applications [19]. The idea is to set up the link between S1 and S2 to serve as the bottleneck link (lowest capacity on the path) and then use H3 to generate cross traffic on link between S2 and S3.…”

Section: Measuring Available Bandwidth In Sdn Networkmentioning

confidence: 99%

“…The idea is to set up the link between S1 and S2 to serve as the bottleneck link (lowest capacity on the path) and then use H3 to generate cross traffic on link between S2 and S3. If this cross traffic is high enough, the bottleneck link and the tight link will become different, which is an important test case for the calculations of current ABW tools [19]. To realize such scenario, we use TrafficControl to maximize the bandwidth capacities of the links and also, (in some scenarios) to add variable delay between the switches and the Floodlight controller.…”

Section: Measuring Available Bandwidth In Sdn Networkmentioning

confidence: 99%

See 1 more Smart Citation

Available bandwidth measurement in software defined networks

Megyesi

Botta

Aceto

et al. 2016

Proceedings of the 31st Annual ACM Symposium on Applied Computing

Self Cite

View full text Add to dashboard Cite

Software Defined Networking (SDN) is an emerging paradigm that is expected to revolutionize computer networks. With the decoupling of data and control plane and the introduction of open communication interfaces between layers, SDN enables programmability over the entire network, promising rapid innovation in this area. The SDN concept was already proven to work successfully in cloud and data center environments thus the proper monitoring of such networks is already in the focus of the research community. Methods for measuring Quality of Service (QoS) parameters such as bandwidth utilization, packet loss, and delay have been recently introduced in literature, but they lack a solution for tackling down the question of available bandwidth. In this paper, we attempt to fill this gap and introduce a novel mechanism for measuring available bandwidth in SDN networks. We take advantage of the SDN architecture and build an application over the Network Operating System (NOS). Our application can track the topology of the network and the bandwidth utilization over the network links, and thus it is able to calculate the available bandwidth between any two points in the network. We validate our method using the popular Mininet network emulation environment and the widely used NOS called Floodlight. We present results providing insights into the measurement accuracy and showing its relationship with the delay in the control network and the polling frequency.

show abstract

Active Techniques for Available Bandwidth Estimation: Comparison and Application

Cited by 11 publications

References 25 publications

Measuring network throughput in the cloud: The case of Amazon EC2

Measuring network throughput in the cloud: The case of Amazon EC2

Adaptive and reliable multipath provisioning for media transfer in SDN-based overlay networks

Available bandwidth measurement in software defined networks

Contact Info

Product

Resources

About