Dynam-IX: a Dynamic Interconnection eXchange

Pedro Marcos, Marco Chiesa, Lucas Müller, Pradeeban Kathiravelu, Christoph Dietzel, Marco Canini, Marinho Barcellos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations


Autonomous Systems (ASes) can reach hundreds of networks via Internet eXchange Points (IXPs), allowing improvements in traffic delivery performance and competitiveness. Despite the benefits, any pair of ASes needs first to agree on exchanging traffic. By surveying 100+ network operators, we discovered that most interconnection agreements are established through ad-hoc and lengthy processes heavily influenced by personal relationships and brand image. As such, ASes prefer long-term agreements at the expense of a potential mismatch between actual delivery performance and current traffic dynamics. ASes also miss interconnection opportunities due to trust reasons. To improve wide-area traffic delivery performance, we propose Dynam-IX, a framework that allows operators to build trust cooperatively and implement traffic engineering policies to exploit the rich interconnection opportunities at IXPs quickly. Dynam-IX offers a protocol to automate the interconnection process, an intent abstraction to express interconnection policies, a legal framework to digitally handle contracts, and a distributed tamper-proof ledger to create trust among ASes. We build and evaluate a Dynam-IX prototype and show that an AS can establish tens of agreements per minute with negligible overhead for ASes and IXPs.
Original languageEnglish (US)
Title of host publicationProceedings of the ACM SIGCOMM 2018 Conference on Posters and Demos - SIGCOMM '18
PublisherAssociation for Computing Machinery (ACM)
Number of pages13
ISBN (Print)9781450360807
StatePublished - Aug 8 2018
EventACM SIGCOMM 2018 Conference - Budapest, HUN
Duration: Aug 20 2018Aug 25 2018


ConferenceACM SIGCOMM 2018 Conference

Bibliographical note

KAUST Repository Item: Exported on 2020-04-23
Acknowledgements: We thank the anonymous reviewers and our shepherd, Cristel Pelsser, for their valuable feedback on our paper. We are also thankful to Leandro Bertholdo, Raul Sejas, Philippe Duguet, Eric Loos, Ankit Singla, Ignacio Castro, Josh Bailey, and Nikolaos Laoutaris for their excellent feedback and discussions that helped to improve our work. We are also thankful to all network operators and peering coordinators for taking part in our survey. This research is (in part) supported by European Union’s Horizon 2020 research and innovation program under the ENDEAVOUR project (grant agreement 644960), by the project Mapping Interconnection in the Internet: Colocation, Connectivity, and Congestion (NSF CNS-1414177 grant), by CNPq Grant 310408/2017-2 and by CAPES/Brazil - Finance Code 001.


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