@article{Wong2009Towards,
author = {E. W. M. Wong and L. L. H. Andrew and T. Cui and B.
Moran and A. Zalesky and R. S. Tucker and M. Zukerman},
title = {Towards a bufferless optical {Internet}},
journal = {IEEE/OSA
Journal of Lightwave Technology},
volume = {27},
number = {14},
pages = {2817-2833},
month = {Jul.},
year = {2009},
abstract = {This paper investigates the relationship between
buffer size and long-term average TCP performance in dense wavelength division
multiplexing (DWDM) networks. By investigating TCP NewReno, we demonstrate that
buffer requirements are related to the number of wavelength channels at
a bottleneck. With sufficient wavelengths, high
throughput can be obtained with a buffer of one
packet per channel; furthermore, there may be situations where an entirely
bufferless optical
packet switching (OPS) will become feasible. For this study, we develop new
evaluation tools. First, we propose a method based
on a two-part analytical model, with
a new ¿open loop¿ component which approximates
packet discarding in a bottleneck DWDM switch, and
a ¿closed loop¿ fixed-point which reflects the
impact of TCP. This analytical method provides accurate and scalable
approximations of throughput and packet loss rate that can be used as part of
a tool for DWDM network and switch design. Second,
we propose an extrapolation technique to allow simulation of TCP over long
ultra-high bit rate links, avoiding the intractable processing and memory
requirements of direct simulation. This extrapolation technique enables us to
validate the analytical model for arbitrarily high bit rate scenarios.}
}