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  • 1. Socio-Economic Services for European Research ProjectsFuture InternetArchitecture Group Simple Economic Management Approaches of Overlay Traffic in Heterogeneous Internet Topologies Allow the Exchange of Information between Layers and PlayersIoanna Papafili, AUEBGeorge D. Stamoulis, AUEBCostas Kalogiros, AUEB FIArch workshop,Sergios Soursos, ICOM Brussels, BelgiumKrzysztof Wajda, AGH September 23, 2011Burkhard Stiller, UZH © 2010 The SESERV Consortium 1
  • 2. The Internet Ecosystem: Current and Future• Many players acting simultaneously with conflicting interests  leading to tussles – Customers/Users – Providers: ISPs, Application providers, Over-the-top providers, Content providers• Targets: – To address the information asymmetry between players (and layers) – To allow for variation in the outcome © 2010 The SESERV Consortium 2
  • 3. Layers and PlayersDifferent layers of different players Different players at the same layer e.g., overlay traffic management e.g., mTCP, reECN Different layers of the same player e.g., DPI, mTCP © 2010 The SESERV Consortium 3
  • 4. Motivation Allow layers and players express their preferences/choices Address information asymmetry between layers and playersPrincipleOptional exchange of information, if serving the incentives of layers and players. – Can lead to “all-win” © 2010 The SESERV Consortium 4
  • 5. Constituent elements• Exposure of information• Collection of information• Assessment of information• Decision making• Abstracting/aggregating information – Do not expose critical information © 2010 The SESERV Consortium 5
  • 6. Examples• Overlay traffic management – The overlay asks underlay for advice on resource selection• Multipath TCP – Congestion information is carried by flows; the end-host makes decision on how to shift load among flows• Re-ECN – Congestion information is made available to any node of the network © 2010 The SESERV Consortium 6
  • 7. No contradiction to the “end-to-end” principle?Different possibilities for means of information exchange:• Information is exchanged in packets – No impact on routing• If information is carried in the fields of the protocol headers – Limited impact on routing• Complexity mostly to reside at the edges © 2010 The SESERV Consortium 7
  • 8. Thank you for your attention!© 2010 The SESERV Consortium 8