Implications of interdomain traffic characteristics on traffic engineering
Steve Uhlig and Olivier Bonaventure
We study the interdomain traffic as seen by a non-transit ISP, based on a six days trace covering all
the interdomain links of this ISP. Our analysis considers the relationships between the interdomain
traffic and the interdomain topology. We first discuss the day-to-day stability of the interdomain traffic
matrix to evaluate the feasibility of interdomain traffic engineering. Then, we study the variability
of the interdomain flows for several aggregation levels (prefix, AS and sink tree) and with respect to
the interdomain topology seen by BGP. We show that despite the important variability of interdomain flows,
it would be useful for a non-transit ISP to traffic engineer its access traffic by relying on a sink tree
aggregation level.
Published in European Transactions on Telecommunications, special issue on traffic engineering, January 2002.
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