Tag Archives: editorial

Workshop on Internet Economics (WIE2016) Final Report

kc claffy, David Clark.

On December 8-9 2016, CAIDA hosted the 7th interdisciplinary Workshop on Internet Economics (WIE) at the UC San Diego’s Supercomputer Center. This workshop series provides a forum for researchers, Internet facilities and service providers, technologists, economists, theorists, policy makers, and other stakeholders to inform current and emerging regulatory and policy debates. This year we first returned to the list of aspirations we surveyed at the 2014 workshop, and described the challenges of mapping them to actions and measurable
progress. We then reviewed evolutionary shifts in traffic, topology, business, and regulatory models, and (our best understanding of) the economics of the ecosystem. These discussions inspired an extended thought experiment for the second day of the workshop: outlining a new telecommunications legislative framework, including proposing a set of
goals and scope of such regulation, and minimal list of sections required to pursue and measure progress toward those goals. The format was a series of focused sessions, where presenters prepared 10-minute talks on relevant issues, followed by in-depth discussions. This report highlights the discussions and presents relevant open research questions identified by participants. Slides presented and this report are available at

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2016 International Teletraffic Congress (ITC 28) Report

Tobias Hossfeld

The 28th International Teletraffic Congress (ITC 28) was held on 12–16 September 2016 at the University of Wurzburg, Germany. The conference was technically cosponsored by the IEEE Communications Society and the Information Technology Society within VDE, and in cooperation with ACM SIGCOMM. ITC 28 provided a forum for leading researchers from academia and industry to present and discuss the latest advances and developments in design, modelling, measurement, and performance evaluation of communication systems, networks, and services. The main theme of ITC 28, Digital Connected World, reflects the evolution of communications and networking, which is continually changing the world we are living in. The technical program was composed of 37 contributed full papers, 6 short demo papers and three keynote addresses. Three workshops dedicated to timely topics were sponsored: Programmability for Cloud Networks and Applications, Quality of Experience Centric Management, Quality Engineering for a Reliable Internet of Services.

See ITC 28 Homepage: https://itc28.org/

Download the full article DOI: 10.1145/3089262.3089268

Workshop on Tracking Quality of Experience in the Internet: Summary and Outcomes

Fabian E. Bustamante, David Clark, Nick Feamster.

This is a report on the Workshop on Tracking Quality of Experience in the Internet, held at Princeton, October 21–22, 2015, jointly sponsored by the National Science Foundation and the Federal Communication Commission. The term Quality of Experience (QoE) describes a user’s subjective assessment of their experience when using a particular application. In the past, network engineers have typically focused on Quality of Service (QoS): performance metrics such as throughput, delay and jitter, packet loss, and the like. Yet, performance as measured by QoS parameters only matters if it affects the experience of users, as they attempt to use a particular application. Ultimately, the user’s experience is determined by QoE impairments (e.g., rebuffering). Although QoE and QoS are related—for example, a video rebuffering event may be caused by high packet-loss rate—QoE metrics ultimately affect a user’s experience.

Identifying the causes of QoE impairments is complex, since the impairments may arise in one or another region of the network, in the home network, on the user’s device, in servers that are part of the application, or in supporting services such as the DNS. Additionally, metrics for QoE continue to evolve, as do the methods for relating QoE impairments to underlying causes that could be measurable using standard network measurement techniques. Finally, as the capabilities of the underlying network infrastructure continues to evolve, researchers should also consider how to design infrastructure and tools can best support measurements that can better identify the locations and causes of QoE impairments.

The workshop’s aim was to understand the current state of QoE research and to contemplate a community agenda to integrate ongoing threads of QoE research into a collaboration. This summary report describes the topics discussed and summarize the key points of the discussion. Materials related to the workshop are available at http://aqualab.cs.northwestern.edu/NSFWorkshop-InternetQoE
Download the full article DOI: 10.1145/3041027.3041035

Can We Make a Cake and Eat it Too? A Discussion of ICN Security and Privacy

Edith Ngai, Borje Ohlman, Gene Tsudik, Ersin Uzun, Matthias Wahlisch, Christopher A. Wood.

In recent years, Information-centric Networking (ICN) has received much attention from both academic and industry participants. ICN offers data-centric inter-networking that is radically different from today’s host-based IP networks. Security and privacy features on today’s Internet were originally not present and have been incrementally retrofitted over the last 35 years. As such, these issues have become increasingly important as ICN technology gradually matures towards real-world deployment. Thus, while ICN-based architectures (e.g., NDN, CCNx, etc.) are still evolving, it is both timely and important to explore ICN security and privacy issues as well as devise and assess possible mitigation techniques.

This report documents the highlights and outcomes of the Dagstuhl Seminar 16251 on “Information-centric Networking and Security.” The goal of which was to bring together researchers to discuss and address security and privacy issues particular to ICN-based architectures. Upon finishing the three-day workshop, the outlook of ICN is still unclear. Many unsolved and ill-addressed problems remain, such as namespace and identity management, object security and forward secrecy, and privacy. Regardless of the fate of ICN, one thing is certain: much more research and practical experience with these systems is needed to make progress towards solving these arduous problems.
Download the full article DOI: 10.1145/3041027.3041034

Toward a Taxonomy and Attacker Model for Secure Routing Protocols

Matthias Hollick, Cristina Nita-Rotaru, Panagiotis Papadimitratos, Adrian Perrig, Stefan Schmid.

A secure routing protocol represents a foundational building block of a dependable communication system. Unfortunately, currently no taxonomy exists to assist in the design and analysis of secure routing protocols. Based on the Dagstuhl Seminar 15102, this paper initiates the study of more structured approaches to describe secure routing protocols and the corresponding attacker models, in an effort to better understand existing secure routing protocols, and to provide a framework for designing new protocols. We decompose the routing system into its key components based on a functional model of routing. This allows us to classify possible attacks on secure routing protocols. Using our taxonomy, we observe that the most eective attacks target the information in the control plane. Accordingly, unlike classic attackers whose capabilities are often described in terms of computation complexity we propose to classify the power of an attacker with respect to the reach, that is, the extent to which the attacker can influence the routing information indirectly, beyond the locations under its direct control.

Download the full article DOI: 10.1145/3041027.3041033

Report from the 6th PhD School on Traffic Monitoring and Analysis (TMA)

Idilio Drago, Fabio Ricciato, Ramin Sadre

This is a summary report by the organizers of the 6th TMA PhD school held in Louvain-la-Neuve on 5-6 April 2016. The insight and feedback received about the event might turn useful for the organization of future editions and similar events targeting students and young researchers.

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“Resource Pooling” for Wireless Networks: Solutions for the Developing World

Junaid Qadir, Arjuna Sathiaseelan, Liang Wang.

We live in a world in which there is a great disparity between the lives of the rich and the poor. Technology offers great promise in bridging this gap. In particular, wireless technology unfetters developing communities from the constraints of infrastructure providing a great opportunity to leapfrog years of neglect and technological waywardness. In this paper, we highlight the role of resource pooling for wireless networks in the developing world. Resource pooling involves (i) abstracting a collection of networked resources to behave like a single unified resource pool and (ii) developing mechanisms for shifting load between the various parts of the unified resource pool. The popularity of resource pooling stems from its ability to provide resilience, high utilization, and flexibility at an acceptable cost. We show that “resource pooling”, which is very popular in its various manifestations, is the key unifying principle underlying a diverse number of successful wireless technologies (such as white space networking, community networks, etc.). We discuss various applications of resource pooled wireless technologies and provide a discussion on open issues.

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The 8th Workshop on Active Internet Measurements (AIMS-8) Report


On 10-12 February 2016, CAIDA hosted the eighth Workshop on Active Internet Measurements (AIMS-8) as part of our series of Internet Statistics and Metrics Analysis (ISMA) workshops. This workshop series provides a forum for stakeholders in Internet active measurement projects to communicate their interests and concerns, and explore cooperative approaches to maximizing the collective benefit of deployed infrastructure and gathered measurements. Discussion topics included: infrastructure development status and plans; experimental design, execution, and cross-validation; challenges to incentivize hosting, sharing, and using measurement infrastructure; data access, sharing, and analytics; and challenges of emerging high bandwidth network measurement infrastructure. Other recurrent topics included paths toward increased interoperability and cooperative use of infrastructures, and ethical frameworks to support active Internet measurement. Materials related to the workshop are at

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The July 2016 Issue

This issue of Computer Communication Review is again a bit special. The previous issue was the last issue published on paper. The issue that you read is the first to be printed only on electrons. We hope that moving to an entirely online publication model will allow CCR to better serve the needs of the community. CCR is now available through a dedicated website : https://ccronline.sigcomm.org . We will add new features on the website to encourage interactions among the entire community. Ideas and suggestions on how to improve the website are more than welcome.
This issue contains a wide range of articles. Four peer-reviewed articles have been accepted. In “Controlling Queueing Delays for Real-Time Communication : The Interplay of E2E and AQM Algorithms”, Gaetano Carlucci et al. analyse the performance of the Google Congestion Control algorithm for real time communication with Active Queue Management (AQM) and scheduling techniques. In “What do Parrots and BGP Routers have in common”, David Hauwele et al. use controlled experiments and measurements to determine why BGP routers send duplicate messages. In “TussleOS: Managing Privacy versus Functionality Trade-offs on IOT Devices”, Rayman Preet Singh et al. propose a different model to improve OS-level support for privacy in Internet of Things. In “InKeV: In-Kernel Distributed Network Virtualisation for DCN”, Zaafar Ahmed et al. propose to leverage the extended Berkeley Packet Filter (eBFP), a way to safely introduce new functionality into the Linux kernel.
In addition to the peer-reviewed technical papers, this issue contains a record number of editorial papers. In “Opening Up Attendance at Hotnets”, the HotNets Steering Committee reports the results of the more open attendance policy used for Hotnets 2015. In “EZ-PC: Program Committee Selection Made Easy”, Vyas Sekar argues that selecting a technical program committee (PC) for a conference or workshop is a complex process that can be improved by using software tools. He proposes EZ-PC, an open-source software that formulates this process as a simple constraint satisfaction problem and reports on his experience with the software. In “New Kid on the Block: Network Functions Virtualization: From Big Boxes to Carrier Clouds”, Leonhard Nobach et al. provide an overview on the current state-of-the-art and open research questions in Network Function Virtualisation (NFV). Then five editorials summarise the main findings of five recently held workshops : the Roundtable on Real-Time Communications Research: 5G and Real-Time Communications — Topics for Research, the 2015 Workshop on Internet Economics (WIE), the Internet Research Task Force and Internet Society workshop on Research and Applications of Internet Measurements (RAIM), the Research and Infrastructure Challenges for Applications and Services in the Year 2021 and the 2016 BGP Hackathon. The 2016 BGP Hackathon was a joint effort between researchers who study the Border Gateway Protocol (BGP) and network operators who manage routers that rely on this protocol. During a few days in February 2016, members from these two communities met to develop new software tools together. The results of this hackathon are a clear example that it is possible to achieve excellent results by joining forces and working together on a common objective. The organisers of the hackathon applied for community funding from ACM SIGCOMM and used this funding to offer travel grants and increase the participation of researchers to the hackathon. I hope that the SIGCOMM Executive Committee will receive other requests for funding for similar hackathons in the coming months and years.
Finally, we also have our regular columns. In his student mentoring column, Aditya Akella discusses the different between journal and conference papers, different types of jobs and conference talks. In the industrial column, Nandita Dukkipati and her colleagues discuss the deployment of new congestion control schemes in datacenters and on the Internet based on their experience at a large cloud provider.
Olivier Bonaventure
CCR Editor