Publication:
Understanding Internet topology: principles, models, and validation

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Authors
Alderson, David
Li, Lun
Willinger, Walter
Doyle, John C.
Subjects
degree-based generators
heuristically optional topology
network design
network topology
router configuration
topology metrics
Advisors
Date of Issue
2005-12
Date
Publisher
IEEE
Language
Abstract
Building on a recent effort that combines a first-principles approach to modeling router-level connectivity with a more pragmatic use of statistics and graph theory, we show in this paper that for the Internet, an improved understanding of its physical infrastructure is possible by viewing the physical connectivity as an annotated graph that delivers raw connectivity and bandwidth to the upper layers in the TCP/IP protocol stack, subject to practical constraints (e.g. router technology) and economic considerations (e.g., link costs). More importantly, by relying on data from Ablilene, a Tier -1 ISP, and the Rocketfuel project, we provide empirical evidence in support of the proposed approach and its consistency with networking reality. To illustrate this utility, we: 1) show that our approach provides insight into the origin of high variability in measured or inferred router-level maps,: 2) demonstrate that it easily accommodates the incorporation of additional objectives of network design (e.g., robustness to router failure); and 3) discuss how it complements ongoing community efforts to reverse-engneer the Internet.
Type
Article
Description
The article of record as published may be found at: http://dx.doi.org/10.1109/NET.2005.861250
Series/Report No
Department
Operations Research
Other Units
Naval Postgraduate School, Monterey, California
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
IEEE/ACM Transactions on Networkng, v.13, no.6 December 2005, pp. 1205-1218.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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