%0 Generic
%A Giotsas, V
%A Zhou, S
%D 2011
%F discovery:10160693
%I arXiv
%K Internet, Autonomous Systems, BGP, measurement, inter-domain routing, business relationships, inference  algorithms
%T Inferring Internet AS Relationships Based on BGP Routing Policies
%U https://discovery.ucl.ac.uk/id/eprint/10160693/
%X The type of business relationships between the Internet autonomous systems  (AS) determines the BGP inter-domain routing. Previous works on inferring AS  relationships relied on the connectivity information between ASes. In this  paper we infer AS relationships by analysing the routing polices of ASes  encoded in the BGP attributes Communities and the Locpref. We accumulate BGP  data from RouteViews, RIPE RIS and the public Route Servers in August 2010 and  February 2011. Based on the routing policies extracted from data of the two BGP  attributes, we obtain AS relationships for 39% links in our data, which include  all links among the Tier-1 ASes and most links between Tier-1 and Tier-2 ASes.  We also reveal a number of special AS relationships, namely the hybrid  relationship, the partial-transit relationship, the indirect peering  relationship and the backup links. These special relationships are relevant to  a better understanding of the Internet routing. Our work provides a profound  methodological progress for inferring the AS relationships.
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