Number of peers per AS

• By-product of action 42.R3 (Henk Uijterwaal)

• Number of peers per AS

  • Lots of ASes will peer with 1 or 2 others
  • Few ASes will peer with everybody

• Search number of peers for each AS

• Calculate CDF: Fraction of ASes with > n peers

• Graph theory suggests a power law here:

cumulative distribution function (cdf) = na

• This is indeed the case

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