The RIPE NCC internet measurement data repository

This paper describes datasets that will shortly be made available to the research community through an Internet measurement data repository operated by the RIPE NCC. The datasets include measurements collected by RIPE NCC projects, packet trace sets recovered from the defunct NLANR website and datasets collected and currently hosted by other research institutions. This work aims to raise awareness of these datasets amongst researchers and to promote discussion about possible changes to the data collection processes to ensure that the measurements are relevant and useful to the community

An Internet Heartbeat

Obtaining sound inferences over remote networks via active or passive measurements is difficult. Active measurement campaigns face challenges of load, coverage, and visibility. Passive measurements require a privileged vantage point. Even networks under our own control too often remain poorly understood and hard to diagnose. As a step toward the democratization of Internet measurement, we consider the inferential power possible were the network to include a constant and predictable stream of dedicated lightweight measurement traffic. We posit an Internet "heartbeat," which nodes periodically send to random destinations, and show how aggregating heartbeats facilitates introspection into parts of the network that are today generally obtuse. We explore the design space of an Internet heartbeat, potential use cases, incentives, and paths to deployment

High-speed, in-band performance measurement instrumentation for next generation IP networks

Facilitating always-on instrumentation of Internet traffic for the purposes of performance measurement is crucial in order to enable accountability of resource usage and automated network control, management and optimisation. This has proven infeasible to date due to the lack of native measurement mechanisms that can form an integral part of the network‟s main forwarding operation. However, Internet Protocol version 6 (IPv6) specification enables the efficient encoding and processing of optional per-packet information as a native part of the network layer, and this constitutes a strong reason for IPv6 to be adopted as the ubiquitous next generation Internet transport. In this paper we present a very high-speed hardware implementation of in-line measurement, a truly native traffic instrumentation mechanism for the next generation Internet, which facilitates performance measurement of the actual data-carrying traffic at small timescales between two points in the network. This system is designed to operate as part of the routers' fast path and to incur an absolutely minimal impact on the network operation even while instrumenting traffic between the edges of very high capacity links. Our results show that the implementation can be easily accommodated by current FPGA technology, and real Internet traffic traces verify that the overhead incurred by instrumenting every packet over a 10 Gb/s operational backbone link carrying a typical workload is indeed negligible

NetCluster: a Clustering-Based Framework for Internet Tomography

Abstract — In this paper, Internet data collected via passive measurement are analyzed to obtain localization information on nodes by clustering (i.e., grouping together) nodes that exhibit similar network path properties. Since traditional clustering algorithms fail to correctly identify clusters of homogeneous nodes, we propose a novel framework, named “NetCluster”, suited to analyze Internet measurement datasets. We show that the proposed framework correctly analyzes synthetically generated traces. Finally, we apply it to real traces collected at the access link of our campus LAN and discuss the network characteristics as seen at the vantage point. I. INTRODUCTION AND MOTIVATIONS The Internet is a complex distributed system which continues to grow and evolve. The unregulated and heterogeneous structure of the current Internet makes it challenging to obtai

Internet Measurement

Nowadays, TCP channel estimation is a matter of great importance, being communication network metrology the core of network performance analysis field, since it allows to interpret and understand the network behaviour through the gathered metrics. In the context of this dissertation, an open source software project, available on GitHub, was developed. It uses a client-server architecture to estimate the Bulk Transfer Capacity (BTC) and provides portability due to Java and Android clients, being able to run on computers, tablets and mobile phones. Two algorithms to measure the BTC were deployed. Their measuring capacity was analysed and optimized, supported on studies about the influence of the TCP windows. The packet train dispersion algorithm was also implemented and analysed, but it did not allow measuring significant BTC results. The performance of the tool was tested for wired and cellular wireless networks, considering all the major Portuguese network operators. The results were compared to the ones measured by the iPerf3 reference tool, considering a stop criteria based on Jain’s Fairness Index [1] in order to inject the less possible traffic into the network. The measurement results are in line with the methodology proposed by ETSI and Ofcom to monitor the bandwidth, considering fixed time transmissions, and can contribute to reduce the transmission durations required to analyse each network

INTERNET RETAIL IN A DEVELOPING COUNTRY: PERFORMANCE MEASUREMENT AND BUSINESS OPERATIONS

This study investigates Internet retailers in a developing country. It aims to investigate the characteristic of business profiles and operations, and to describe performance measurement implemented and its use. Internet-based research was adopted by combining a questionnaire email survey with web content analysis to study Indonesian Internet retailers. The results show that the majority of Indonesian Internet retailers are immature, small size, and without store-presence. The business operation practices, such as ordering, payment, and communication, indicate some differences from those in developed economies. Though Indonesian Internet retailers are still immature, they have measured various aspects of business performance. Those measured more performance indicators are likely to use the information more intensively to support decision making. This study has limitations such as the small number of responses, which might prevent the generalization of the results. The findings could be used by local Internet retailers to improve the business operations and performance measurement, as well as global Internet retailers entering Indonesian market to adopt some local operation practices

Faulty Metrics and the Future of Digital Journalism

This report explores the industry of Internet measurement and its impact on news organizations working online. It investigates this landscape through a combination of documentary research and interviews with measurement companies, trade groups, advertising agencies, media scholars, and journalists from national newspapers, regional papers, and online-only news ventures