A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : LTCP: A Layering Technique for Improving
the Performance of TCP in Highspeed Networks
Author(s) : S. Bhandarkar, et al.
Filename : draft-bhandarkar-ltcp-01.txt,.ps
Pages : 16
Date : 2004-7-15
This document proposes Layered TCP (LTCP for short), a simple
layering technique for the congestion window response of TCP to make
it more scalable in highspeed networks. LTCP is a two dimensional
congestion control framework - the macroscopic control uses the
concept of layering to quickly and efficiently make use of the
available bandwidth whereas microscopic control extends the existing
AIMD algorithms of TCP to determine the per-ack behavior. This
document provides the general intuition and framework for the LTCP
protocol modifications. Using a simple design, the effectiveness of
using layering for improving the efficiency without sacrificing the
convergence properties of TCP, is illustrated. The chosen design is
evaluated using mathematical analysis, ns-2 based simulations and
emulation on a Linux testbed. The results show that LTCP has
promising convergence properties, is about an order of magnitude
faster than TCP in utilizing high bandwidth links, employs few
parameters and is easy to understand. The flexible framework opens a
whole class of design options for improving the performance of TCP in
highspeed networks. This document is an effort to solicit more
experimentation and feedback from the broader networking community.
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