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Tall Stacks

Tall Stacks. Henning Schulzrinne Columbia University. 1980s. 1990s – we’re losing. ACM Sigcomm – Applications, Technologies, Architectures and Protocols. Political. Application. Startup. Presentation. Web. Session. TCP. Transport. Network. IP. Link. Optical. Physical.

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Tall Stacks

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  1. Tall Stacks Henning Schulzrinne Columbia University

  2. 1980s 1990s – we’re losing ACM Sigcomm –Applications, Technologies, Architectures and Protocols Political Application Startup Presentation Web Session TCP Transport Network IP Link Optical Physical

  3. Grand Challenge: Taller Stacks • If we continue, we’ll run start-ups directly on optical • No protocols = no measurements, composable OS kernels, protocol verification, no conferences • Thus, we need taller stacks • Also defeats NATs, firewalls, British customs officers, Moore’s law, …

  4. Tall Stacks Contest (aka Multiple Protocol Layer Stacking) • Cannot use the same protocol twice (except IP) • Bonus points for use of MPLS • Evaluation:  = payload / packet length • Smallest number wins • Hints: base64! OTP coding! RFC 2733!

  5. The margins are too small to contain the whole solution. MPLS IP-in-SMTP SMTP TCP SONET IETF Pittsburgh IP RTP Ethernet L2TP SCTP IPv4 IP PPP V.21-in-RTP (1 bit per packet!) RTP UDP IPv6 IPv4 AAL5 ATM SONET

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