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  • IETF 117 Highlights

    IETF 117 is a few weeks behind us and Dhruv Dhody, IAB Member and liaison to the IESG, took the opportunity to report on a few highlights and some impressions.

    • Dhruv DhodyIAB Member and liaison to the IESG
    21 Aug 2023
  • Proposed response to meeting venue consultations and the complex issues raised

    The IETF Administration LLC recently sought feedback from the community on the possibility of holding an IETF Meeting in the cities of Beijing, Istanbul, Kuala Lumpur and Shenzhen, with received feedback including views that were well expressed and well argued but strongly conflicting. The IETF LLC has considered this feedback in-depth and now seeks community feedback on its proposed response.

    • Jay DaleyIETF Executive Director
    21 Aug 2023
  • Submit Birds of a Feather session proposals for IETF 118

    Now's the time to submit Birds of a Feather session (BOFs) ideas for the IETF 118 meeting 4-10 November 2023, with proposals due by 8 September.

      16 Aug 2023
    • Applied Networking Research Workshop 2023 Review

      More than 250 participants gathered online and in person for ANRW 2023, the academic workshop that provides a forum for researchers, vendors, network operators, and the Internet standards community to present and discuss emerging results in applied networking research.

      • Maria ApostolakiANRW Program co-chair
      • Francis YanANRW Program co-chair
      16 Aug 2023
    • IETF 117 post-meeting survey

      IETF 117 San Francisco was held 22-28 July 2023 and the results of the post-meeting survey are now available on a web-based interactive dashboard.

      • Jay DaleyIETF Executive Director
      11 Aug 2023

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    Automating interoperability testing to improve open standards for the Internet

    • Marten Seemann
    • Jana Iyengar

    8 Sep 2020

    While interoperability testing has been one of the hallmarks of open standards and Internet protocol development for more than three decades, the process itself has been limited by manual and inconsistent testing.

    Automated QUIC Interoperability testing

    To address these shortcomings, we created QuicInteropRunner (QIR), a framework that enables implementers to maintain and update their own endpoints, making it easier for them to set up and run interoperability tests using carefully constructed and repeatable network scenarios. We have also set up continuous testing with QIR and a page where the results are available.

    As implementations of the emerging QUIC protocol being developed in the Internet Engineering Task Force (IETF) began to mature, interoperability testing became increasingly important to ensure that independently-developed implementations worked as expected. However, the existing approach to testing was limited in a number of ways, including:

    • the number of implementations that could be tested, since there are a quadratic number of combinations to test;
    • the number of features that could be tested—a problem exacerbated by the complexity of protocols built for the modern Internet; and 
    • the range of network conditions under which the protocol could be repeatedly tested (which meant that the wide variety of network conditions under which the protocol would be expected to perform well on the global Internet could not be replicated). 
    QUIC badge

    As a result, identifying issues with the protocol and implementations took longer than it should have, and the existing tests could miss scenarios likely to be found once they were widely in use.

    The QuicInteropRunner (QIR) is our attempt at overcoming these limitations. Using simple container orchestration and network simulation, QIR makes it possible to meet the constraints of implementers while automating this process for on-demand, continuous, and repeatable interoperability and performance testing. A more complete explanation how QIR uses Docker containers and the ns-3 network simulator is available in our paper, which was recently presented at the EPIQ ‘20 conference.

    Currently, 13 QUIC implementations (two of which only implement a QUIC server and one which only implements a QUIC client) are included in QIR. Importantly, any implementer can include their implementation in QIR by building a compatible container image, making it publicly available, and adding it to the list of implementations.

    To enable continuous interoperability testing, we have set up a QIR instance that continuously pulls the implementation images and runs all the tests in the framework. The results of this continuous testing are posted on this webpage.

    As a network of networks, the global Internet we know today works because independently deployed and managed components work well together through open protocols. Internet interoperability testing traces its history back to at least 1986 and remains a key part of new protocol development and deployment. While QIR was developed for testing QUIC implementations, we believe the central ideas, components, and even code can be repurposed for testing other protocols that will help the Internet evolve and work better.

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