Re: [alto] Proposed Path Aware Networking Research Group in Prague

"Y. Richard Yang" <> Sat, 15 July 2017 09:06 UTC

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From: "Y. Richard Yang" <>
Date: Sat, 15 Jul 2017 17:06:46 +0800
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To: Kai Gao <>
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Subject: Re: [alto] Proposed Path Aware Networking Research Group in Prague
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Dear Brian, all ALTO participants,

It is good to see such related efforts. In particular, this item in your
charter is quite related:
- communication and discovery of information about the properties of a path
on local networks and in internetworks,...

A related ALTO WG document is:

An academic paper just appeared in IWQoS 2017 is attached to this email.

We sure will attend and engage.


On Fri, Jul 14, 2017 at 8:38 AM, Kai Gao <>

> Hi Brian and all,
> It is definitely closely related and I feel the target of PAN fits
> perfectly with the latest efforts within ALTO WG, in particular the path
> vector extension, which aim to provide fine-grained path information to
> higher-layer orchestrators/applications.
> Our group would be very interested in PAN RG and we would try our best to
> attend.
> Thanks for the information and wish you all the best!
> Regards,
> Kai
> On 07/13/2017 11:35 PM, Brian Trammell (IETF) wrote:
> Greetings, all, and apologies for the cross-posting,
> We'll be having a first meeting of the proposed Path Aware Networking
> (PAN) RG at IETF 99 in Prague next week, 13:30 Wednesday in Congress
> Hall 3. It's been suggested The scope of this RG might be of interest
> to your working group, research group, or BoF, so I hope you'll have
> a chance to drop by. Olivier Bonaventure will give a review and overview
> of research to date in this space, and Adrian Perrig will present a
> fully path-aware Internet architecture, as an illustration of what is
> possible when path-awareness is promoted to a first-order goal.
> From our proposed charter (
> The Internet architecture assumes a division between the end-to-end
> functionality of the transport layer and the properties of the path between the
> endpoints. The path is assumed to be invisible, homogeneous, singular, with
> dynamics solely determined by the connectivity of the endpoints and the Internet
> control plane. Endpoints have very little information about the paths over which
> their traffic is carried, and no control at all beyond the destination address.
> Increased diversity in access networks, and ubiquitous mobile connectivity, have
> made this architecture's assumptions about paths less tenable. Multipath
> protocols taking advantage of this mobile connectivity begin to show us a way
> forward, though: if endpoints cannot control the path, at least they can
> determine the properties of the path by choosing among paths available to them.
> This research group aims to support research in bringing path awareness to
> transport and application layer protocols, and to bring research in this space
> to the attention of the Internet engineering and protocol design community.
> The scope of work within the RG includes, but is not strictly limited to:
> - communication and discovery of information about the properties of a path on
> local networks and in internetworks, exploration of trust and risk models
> associated with this information, and algorithms for path selection at
> endpoints based on this information.
> - algorithms for making transport-layer scheduling decisions based on
> information about path properties.
> - algorithms for reconciling path selection at endpoints with widely deployed
> routing protocols and network operations best practices.
> The research group's scope overlaps with existing IETF and IRTF efforts, and
> will collaborate with groups chartered to work on multipath transport protocols
> (MPTCP, QUIC, TSVWG), congestion control in multiply-connected environments
> (ICCRG), and alternate routing architectures (e.g. LISP), and is related to
> the questions raised in the multiple recent BoF sessions that have addressed
> path awareness and multiply-connected networks (e.g. SPUD, PLUS, BANANA).
> The PAN(P)RG intends to meet at each IETF meeting until a
> determination is made whether or not to charter it. Afterward, the RG intends to
> meet at 1-3 IETF meetings per year, and hold one workshop per year, collocated
> with a related academic conference.
> Thanks, cheers
> Brian (as co-chair PAN PRG)
> _______________________________________________
> alto mailing listalto@ietf.org

| Y. Richard Yang <>   |
| Professor of Computer Science       |
|        |