Dear Chairs,
I'm a researcher at ETH Zurich working in the field of multipath, in
particular in the context of the future Internet architecture SCION, and
path-aware networks (IRTF PANRG).
We are researching inter-domain multipath offered by the network
infrastructure, which is different from multi-interface or multi-homing
based multipath as assumed by MPTCP. In a SCION-based setting, we
observe a large number of distinct paths that can be used, typically
around 10, but for larger distances we observe even 50-100 different paths.
In this context, we see two topics of potential interest. First,
multipath scheduling, which has a large impact on the performance of a
multipath transport protocol, becomes challenging since we might not be
able to continuously probe 10+ (or even 100+) paths to infer which paths
to send traffic on.
Second, the SCION architecture can offer additional information for
paths, for instance AS-level information, lower bound on end-to-end path
latency, expected bandwidth, etc. An interesting challenge is how to
expose this path information to applications or transport protocols, so
that path optimization is possible for instance for different QUIC streams.
The extensibility of (MP)QUIC provides an interesting platform to allow
endpoints to use additional path information in the scheduling
algorithm, negotiate paths with desirable properties between endpoints,
and map QUIC data streams to specific paths.
If the working group is interested and this use case has not already
been discussed in the group, I would be happy to give a short
introduction in the interim meeting.
Best,
Cyrill Krähenbühl
Best,
Cyrill
On 13.10.20 15:10, Lucas Pardue wrote:
Hi folks,
In the upcoming interim related to multipath QUIC, the chairs would
like to allocate a small bit of agenda time to hear people's use
cases. We'd like to spend no more than 5 minutes per non-intersecting
deployment use cases (e.g. we'd hear about Apple's use of multipath in
one presentation only, ideally from Apple folks themselves).
Presenters should also include requirements or non-requirements in the
context of what is currently not supported in QUICv1.
We invite people to nominate a speaker that will submit slides in PDF
format as a Pull Request to the QUIC WG materials repository
interim-20-10 folder [1]. We'll consider these as we update the agenda
in the lead up to the meeting.
Cheers,
Lars and Lucas
QUIC WG Chairs
[1] https://github.com/quicwg/wg-materials/tree/master/interim-20-10
