Understanding incentives for prefix aggregation in BGP

Proceeding of: ReArch'09, Proceedings of the 2009 workshop on Re-architecting the internet, (49-54), 1 December 2009, Rome, Italy.Over the last few years, a significant amount of the effort of the Future Internet architecture is devoted in order to improve the scalability of the next generation routing architecture. In this paper, we study providers’ incentives to perform prefix aggregation or deaggregation of non-customers routes. This is essentially a tradeoff between reduced router memory and reduced capacity of attracting customer traffic. We study the case where two ISPs compete for attracting traffic, by using game theory. In particular, we propose a game-theoretic model and we analyze the properties of the equilibrium. In a symmetric case, if a single Autonomous System (AS) is found to be deaggregating a given prefix, then all others will have the incentive to do the same, even if they end up with lower benefits. We find that pure equilibria do not always exist and we derive the conditions based on two model parameters. These findings suggest that BGP instability can be a common problem in a competitive scenario.European Community's Seventh Framework ProgramPublicad

An Approach to Investigating Socio-economic Tussles Arising from Building the Future Internet

With the evolution of the Internet from a controlled research network to a worldwide social and economic platform, the initial assumptions regarding stakeholder cooperative behavior are no longer valid. Conflicts have emerged in situations where there are opposing interests. Previous work in the literature has termed these conflicts tussles. This article presents the research of the SESERV project, which develops a methodology to investigate such tussles and is carrying out a survey of tussles identified within the research projects funded under the Future Networks topic of the FP7. Selected tussles covering both social and economic aspects are analyzed also in this articl

A Tussle Analysis for Information-Centric Networking Architectures

Abstract. Current Future Internet (FI) research brings out the trend of designing information-oriented networks, in contrast to the current host-centric Internet. Information-centric Networking (ICN) focuses on finding and transmitting information to end-users, instead of connecting end hosts that exchange data. The key concepts of ICN are expected to have significant impact on the FI, and to create new challenges for all associated stakeholders. In order to investigate the motives as well as the arising conflicts between the stakeholders, we apply a tussle analysis methodology in a content delivery scenario incorporating socioeconomic principles. Our analysis highlights the interests of the various stakeholders and the issues that should be taken into account by designers when deploying new content delivery schemes under the ICN paradigm

OPTET D2.4 Socio-economic evaluation of trust and trustworthiness

In this deliverable, we present the work done on Trust and Trustworthiness models after the D2.3 milestone. The work focused on extending the models, enhancing their performance as well as accuracy when used across the socio-technical system lifecycle. This deliverable also presents the details of the validation and evaluation of these models, and their integration into the WP8 use cases (DADV, AAL and SWC).The Trustworthiness model was enhanced with new asset types, threats and controls restructured in a modular way to allow easier future extension and performance optimisation as systems complexity grows. The GE presented in the 2nd year review was made more robust and finally used for the evaluation requested by the reviewers to show how both the model as well as the GE support the system design and provide additional value compared to the traditional modelling process.The evaluation on the Trust model was done by conducting a large-scale experiment on users of a fictional search engine and questioning them about their perception of trust into the system depending on various factors. Furthermore, we analysed the effect of user trust on the legal framework.The evaluation results and identified software bugs have already been taken into consideration in the final release of the OPTET GE’s