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Proceedings Paper

TCP fiber: direct measurement optical transport congestion control for beyond 10 gigabit networks
Author(s): Matheos Kazantzidis
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Paper Abstract

Optical or gigabit communication links could currently allow petabytes of data to be transferred to geographically distributed tera-scale computing facilities at beyond 10Gbps rates. While the bandwidth is available in network link technology, transport protocols like TCP/IP and common network host architectures severely limit the attainable throughput over such links. Traditional layering -that is implemented through excessive per-byte (word) memory bandwidth constrained buffer copying- transport processing complexity, combined error and congestion control and trial and error timeout-based approaches result in prohibitively increasing performance degradation as network speeds increase. In this paper we present TCP-Fiber, a TCP version that is based on direct measurements of available and bottleneck link bandwidth and is able to perform decoupled error and congestion control while supporting zero-copy from application to network interface. A key innovation in TCP-Fiber is a variable length "packet train" based method that allows sensing ultra high bandwidth related quantities in a network independent fashion with relaxed requirements to timers and system resources (as related to interrupts, system calls etc). A TCP-Fiber connection is able to fairly send at the full network rate without extensive trial-and-error convergence procedures or waiting on time-out for unacknowledged packets, while maintaining network stability.

Paper Details

Date Published: 12 May 2006
PDF: 11 pages
Proc. SPIE 6243, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II, 624307 (12 May 2006); doi: 10.1117/12.664748
Show Author Affiliations
Matheos Kazantzidis, Broadata Communications, Inc. (United States)


Published in SPIE Proceedings Vol. 6243:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II
Michael J. Hayduk; Andrew R. Pirich; Eric J. Donkor; Peter J. Delfyett, Editor(s)

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