The Internet's unexploited path diversity

Pedro D. Arjona-Villicaňa, Costas C. Constantinou, Alexander Stepanenko

Research output: Contribution to journalArticlepeer-review


The connectivity of the Internet at the Autonomous System level is influenced by the network operator policies implemented. These in turn impose a direction to the announcement of address advertisements and, consequently, to the paths that can be used to reach back such destinations. We propose to use directed graphs to properly represent how destinations propagate through the Internet and the number of arc-disjoint paths to quantify this network's path diversity. Moreover, in order to understand the effects that policies have on the connectivity of the Internet, numerical analyses of the resulting directed graphs were conducted. Results demonstrate that, even after policies have been applied, there is still path diversity which the Border Gateway Protocol cannot currently exploit.
Original languageEnglish
Article number5456070
Pages (from-to)474-476
Number of pages3
JournalIEEE Communications Letters
Issue number5
Publication statusPublished - May 2010

Bibliographical note

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  • Internet
  • arc-disjoint paths
  • autonomous system level
  • border gateway protocol
  • directed graphs
  • network operator policies
  • numerical analyses
  • unexploited path diversity


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