MAMI at IETF97

MAMI was represented by ETH Zürich at the 97th meeting of the Internet Engineering Task Force in Seoul.

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The biggest news this time around was the first meeting of the QUIC working group, which will standardize a next-generation, encrypted transport protocol encapsulated in UDP based on Google’s QUIC and TLS version 1.3. Brian Trammell presented a concept for a transport-independent state machine for middleboxes at the meeting, to start the discussion about how QUIC’s wire image should interact with on-path devices, both present and future. While it’s not clear how much of the proposed transport protocol mechanism will be adopted into QUIC, discussion during and after the working group meeting has led to further refinement thereof.

Measurement and Analysis for Protocols (MAP) RG

Measurement and Analysis for Protocols (MAP) research group meeting

Mirja Kühlewind chaired a meeting of the Measurement and Analysis for Protocols Research Group (MAPRG), the first meeting since the group was officially chartered. The four presentations included techniques for passive delay measurements, a study of broadband access peformance using M-Lab, a study of the performance gain associated with HTTP2, and a characterization of traffic rate policing in the Internet.

Post Sockets, the API concept atop MAMI’s flexible transport layer (FTL), was discussed at the TAPS working group meeting. Tommy Pauly of Apple, a co-author of the Post draft, presented a quite similar approach. Post is very much a work in progress, but we’re happy to see broad interest in the concept, and look forward to developing it further with a broad group of collaborators both inside and outside the project.

Banana BoF (thanks @MeganRKruse)

Standing room only at the BANANA BoF (thanks @MeganRKruse)

The Bandwidth Aggregation for Networked Access (BANANA) BoF looked into standardizing approaches to share bandwidth on a customer network across two access links (usually one mobile and one terrestrial), as we explored in our ANRW paper last year. There is a lot of interest in doing work in this space, but not yet a lot of agreement as to what that work is yet; as is often the case, discussion continues on the mailing list. The MAMI project will also look into providing cooperative signaling for such approaches.

Yaron Sheffer presented a solution to the problem addressed in last meeting’s LURK BoF using short-term, automatically renewable certificates provisioned using the ACME protocol to the ACME working group meeting. The draft has a good chance of being adopted in the timeframe of the next IETF meeting, and work is progressing in parallel on a prototype.

Mirja Kühlewind and Brian Trammell led a discussion on protocol transitions in transport protocols at the Transport Area’s open meeting, both as an open forum on transition in an area full of efforts to deploy new work at Internet scale, and as input for an IAB document on the topic.

We’re back in Zürich now, and the jet lag is finally over. We’re already busy preparing for IETF 98 in March in Chicago, and the QUIC working group’s interim in Tokyo in January!

About Brian Trammell

Brian Trammell is an Internet measurement and architecture geek, a senior researcher at ETH Zürich's Networked Systems Group, and a member of the Internet Architecture Board.
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