The many facets of Internet topology and traffic
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Authors
Alderson, D.
Chang, H.
Roughan, M
Uhlig, S.
Willinger, W.
Subjects
Internet topology
network tomography
traffic matirx
gravity model
model validation
network tomography
traffic matirx
gravity model
model validation
Advisors
Date of Issue
2006-12
Date
Publisher
American Institute of Mathematical Sciences
Language
Abstract
The Internet's layered architecture and organizational structure give rise to a number of different topologies, with the lower layers defining more physical and the higher layers more virtual/logical types of connectivity structures. These structures are very different, and successful Internet topology modeling requires annotating the nodes and edges of the corresponding graphs with information that reflects their network-intrinsic meaning. These structures also give rise to different representations of the traffic that traverses the heterogeneous Internet, and a traffic matrix is a compact and succinct description of the traffic exchanges between the nodes in a given connectivity structure. In this paper, we summarize recent advances in Internet research related to (i) inferring and modeling the router-level topologies of individual service providers (i.e., the physical connectivity structure of an ISP, where nodes are router/switches and links represent physical connections), (ii) estimating the intra-AS traffic matrix when the AS's router-level topology and router configuration are known, (iii) inferring and modeling the Internet's AS-level topology, and (iv) estimating the inter-AS traffic matrix. We will also discuss recent work on Internet connectivity structures that arise at the higher layers in the TCP/IP protocol stack and are more virtual and dynamic; e.g., overlay networks like the WWW graph, where nodes are web pages and edges represent existing hyperlinks, or P2P networks like Gnutella, where nodes represent peers and two peers are connected if they have an active network connection.
Type
Article
Description
Series/Report No
Department
Operations Research
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Neworks and Heterogenous Media, v. 1, no. 4, December 2006, pp. 569-600.
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.