Name: draft-bhandarkar-ltcp-01
Title: LTCP: A Layering Technique for Improving the Performance of TCP in Highspeed Networks
State: Active
Authors: Sumitha Bhandarkar
Group: Individual Submissions (none)
Date: 2004-07-15
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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