Internet topology: connectivity of IP graphs (2001)
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@MISC{Broido01internettopology:,
author = {Andre Broido and Kc Claffy},
title = {Internet topology: connectivity of IP graphs},
year = {2001}
}
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Abstract
In this paper we introduce a framework for analyzing local properties of Internet connectivity. We compare BGP and probed topology data, finding that currently probed topology data yields much denser coverage of AS-level connectivity. We describe data acquisition and construction of several IP-level graphs derived from a collection of 220M skitter traceroutes. We find that a graph consisting of IP nodes and links contains 90.5% of its 629K nodes in the acyclic subgraph. In particular, 55% of the IP nodes are in trees. Full bidirectional connectivity is observed for a giant component containing 8.3% of IP nodes.







