An analysis of BGP multiple origin AS (MOAS) conflicts

  • Authors:
  • Xiaoliang Zhao;Dan Pei;Lan Wang;Dan Massey;Allison Mankin;S. Felix Wu;Lixia Zhang

  • Affiliations:
  • -;-;-;-;-;-;-

  • Venue:
  • IMW '01 Proceedings of the 1st ACM SIGCOMM Workshop on Internet Measurement
  • Year:
  • 2001

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This paper presents a detailed study of BGP Multiple Origin AS (MOAS) conflicts observed in the Internet. A MOAS conflict occurs when a particular prefix appears to originate from more than one AS. We analyzed data from archived BGP routing tables over 1279 days. Most of the conflicts were short-lived, lasting only a small number of days. The potential causes for the MOAS conflicts and impact on BGP fault-tolerance are discussed in detail.