NetArch 2009






  Advance Program (updated 2009-03-14)

Sun March 15
afternoon first arrivals (reception desk is staffed from 4pm)
Mon March 16
morning more arrivals (reception desk is staffed)
12.00 - 12.30 brief welcome and "rules of the game"
12.30 - 14.00 lunch
14.00 - 15.30 Keynote 1 (plus reconcept, debate)
Paul Mockapetris - "What should we learn from 25 years of the Internet: A DNS case study"
[PDF slides]
15.30 - 16.00 coffee break
16.00 - 16.15 Monte Verità -- Welcome from CSF
16.15 - 17.45 Keynote 2 (plus reconcept, debate)
Van Jacobson - "Things flying around, crashing into one another" (plus content centric networking)
[PDF slides] [slide 16 video] [slide 19 video]
[slide 20 video] [slide 21 video]
17.45 - 18.15 IoD session ("insights of the day")
18.45 Official reception event, immediately followed by dinner
Tue March 17
9.00 - 10.30 Keynote 3 (plus reconcept, debate)
Raj Jain - "Internet3.0: The Next Generation Internet"
[PDF slides]
10.30 - 11.00 coffee break
11.00 - 12.30 Keynote 4 (plus reconcept, debate)
Craig Partridge - "Transport Protocol Research after 35 Years"
[PDF slides]
12.30 - 14.00 lunch
14.00 - 15.30 Keynote 5 (plus reconcept, debate)
Martha Steenstrup - "Beyond then Pale: The role of Abstraction in the Internet"
[PDF slides]
15.30 - 16.00 coffee break
16.00 - 17.00 "back to the future" I -- current research
-- Network of Information/4WARD (Börje Ohlman)
   [PDF slides]
-- Information Dispatch Points/ANA (Christophe Jelger)
   [PDF slides]
-- Recursive Networking (Joe Touch)
   [PDF slides]
-- Mint: a Market for Internet Transit (Nick Feamster)
   [PDF slides]
17.00 - 18.00 IoD session ("insights of the day")
19.00 dinner, afterwards: BOF, defined during the day
Wed March 18
9.00 - 10.30 Keynote 6 (plus reconcept, debate)
Guru Parulkar - "Reinventing the Internet by Creating Platforms for Innovations"
[PDF slides]
10.30 - 11.00 coffee break
11.00 - 12.30 Keynote 7 (plus reconcept, debate)
Jonathan Smith - "Distributed Systems and Network Architectures"
[PDF slides]
12.30 - 13.45 lunch
13.45 - 15.15 Keynote 8 (plus reconcept, debate)
Jon Crowcroft - "Political, Philosophical and Economic Assumptions behind my research"
[PDF slides]
15.15 - 15.30 coffee break
15.30 - 16.45 "back to the future" II -- current research
-- project PostModern (Ken Calvert)
   [PDF slides]
-- virtualization/4WARD (Carmelita Görg)
   [PDF slides]
-- IPv6 research (Jeroen Massar)
   [PDF slides]
-- project ResumeNet (Bernhard Plattner)
   [PDF slides]
-- pocket switched networks/Haggle (Martin May)
   [PDF slides]
16.45 - 17.30 IoD session ("insights of the day")
17.30 - social event: winery visit and hillside restaurant
Thu March 19
9.00 - 10.30 working on the permanent record:
insight collection, in parallel work groups
10.30 - 11.00 coffee break
11.00 - 12.30 summary and "last chance" panel
12.30 - 14.00 lunch
14.00 - 16.00 Workshop (open to all symposium participants)
Principles, Patterns, and Paradigms - Searching for GRUNT (GRand Unified Network Theory)
16.00 - 16.30 coffee break

The symposium consists of three parts:

  • Architecture Parade
    We have asked distinguished researchers to present and critically review past design choices they were involved with.
    These keynote speeches will start Monday afternoon (March 16) and extend until Wednesday (March 18). The kenote speeches will always be followed by a moderated discussion (reconceptualization) with the audience.
  • Research projects
    We have invited individual researchers to contribute their analysis and views in short presentations that will be grouped and placed between the "Arch Parade" interventions ("back to the future" slots).
  • Small discussion groups
    Participants will be actively supported to gather in smaller groups and discuss important architecture topics of their choice. (Monday to Thursday). Collected insights will be documented and discussed as much as possible during the event, especially on Thursday. The outcome will be documented to the whole networking community.
Interested researchers who have not received an invitation, should send a brief statement of interest to one of the local organizers to get their participation approved.

Scientific Aim

From a scientific point of view, the Internet is often seen as an extremely positive development: Among other benefits, it changed the way academia works, creating a global and easily accessible platform for scientific collaboration, and created a wonderful showcase for networking technology.

At the same time, the Internet has dominated the computer science part of networking over the last decade, to the extent that little attention has been paid to alternative approaches. Today we still lack a comprehensive theory of networking; progress in this area has been rather slow in the past decade. Meanwhile, the Internet has grown out of understanding and control. This has led to numerous (network architecture) proposals with each new PhD generation, many of which re-introduce previously discarded approaches.

Recently there are signs of change: we are seeing a renaissance of major networking research initiatives that recognize the need for an overhaul of the Internet all the way to its foundation. In this context, the NetArch 2009 conference aims to gather and record the field's understanding of networking theory, and to create a platform for discussing directions we should take to improve our understanding of computer networking.

The "why" of Networking

In networking textbooks, we find a lot about "what" a (Internet) network is and "how" it works, but very little about the "why". This tends to shroud the inventions in mystery and mask the pragmatic decisions that had to be taken in order to get things working. The NetArch 2009 event shall therefore concentrate on unravelling and documenting the rationale, by inviting the first generation of Internet researchers and engineers to reconstruct (and perhaps deconstruct) their mindset of 40 years ago, as well as today. This shall also include researchers whose proposals at that time were not successfully adopted—for example SNA, DecNet, OSI or Xerox. To this end, we will run a 3-day "Architecture Parade" for which key networking persons will document their (retrospective) insights into networking principles.

Key questions of interest are for example:

  • How much of today's architecture is an artifact of 1970's technology? (Example: header size and MTU have stayed constant while bandwidths have increased by many orders of magnitude.)
  • What should be "named" (or "identified") in a network system? To what entities or abstractions should we assign identifiers? Do we even need identifiers, or are attributes sufficient? At what level in the "stack"?
  • Is hop-by-hop routing/forwarding the right approach? Have we adequately explored the space of alternatives? Is DTN a natural extension of store-and-forward?
  • What is the right "paradigm" to support mobility?
  • Which abandoned technology choice should be reconsidered and re-researched? (PIP, Delta-T, Nimrod etc)
  • What aspects of the TCP/IP architecture are "right", and which ones would be done differently and (most importantly) why?

The NetArch 2009 symposium concentrates on the architecture, rather than specific networking problems like routing or congestion control, for three reasons: First, networking architecture is about setting strong boundaries on what techniques can and must be put into operation—and in particular, must be built into the infrastructure—for a network to function effectively. Second, architectural contributions have not had a prominent place in the existing publication channels. And third, we are witnessing an upsurge of research in network architecture, which can only benefit from mutual exposure, direct comparison, and interchange of ideas.

The split horizons meet

Thanks to the success of the Internet, the networking community has become large and quite diverse. A side effect of this success is that it becomes increasingly difficult to track all relevant developments and projects—especially for such a broad topic as network architecture design. Yet it is crucial that any attempt at a new Internet incorporate all the latest applicable research to the greatest possible extent, lest the result be multiple, incompatible network layer designs, ultimately requiring "down-conversion" to the least common denominator in order to achieve full connectivity.

To encourage cross-fertilization and confrontation of ideas, the NetArch 2009 symposium will include workshops and presentations focusing on all major architecture projects and initiatives going on worldwide ("back to the future" slots). This is expected to promote synergies and collaborations, and could open up new exciting research directions where, for example, new inter-networking technologies could be designed in parallel to the new network architectures currently being developed.