Efficient ethernet switch models for large-scale network simulation
Jin, Dong
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https://hdl.handle.net/2142/16183
Description
Title
Efficient ethernet switch models for large-scale network simulation
Author(s)
Jin, Dong
Issue Date
2010-05-19T18:40:01Z
Director of Research (if dissertation) or Advisor (if thesis)
Nicol, David M.
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
switch modeling
simulation
measurement
performance
Abstract
Ethernet is the most widely implemented low-level networking technology used today, with Gigabit Ethernet seen as the emerging standard implementation. The backbones of many large scale networks (e.g., data centers, metro-area deployments) are increasingly made up of Gigabit Ethernet as the underlying technology, and Ethernet is seeing increasing use in dynamic and failure-prone settings (e.g., wireless backhaul, developing regions) with high rates of churn. Correspondingly, when using simulation to study such networks and applications that run on them, the switching makes up a significant fraction of the model, and can make up a significant amount of the simulation activity. This work describes a unique testbed that gathers highly
accurate measurements of loss and latency through a switch, reports on experiments that reveal the behavior of three commercial switches, and then proposes simulation models that explain the observed data. The models
vary in their computational complexity and in their accuracy with respect to frame loss patterns, and latency through the switch. In particular, the simplest model predicts a frame’s loss and latency immediately at the time of its arrival, which keeps the computational cost close to one event per frame per switch, provides excellent temporal separation between switches (useful for
parallel simulation), and provides excellent accuracy for loss and adequate accuracy for latency.
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