Implications of the topological properties of Internet traffic on traffic engineering

Sun, 04/01/2007 - 01:54 by Damien Leroy


In this paper we study the behavior of Internet traffic on the ASlevel
topology and discuss its implications on interdomain traffic
engineering. We rely on two notable interdomain traffic traces, the
first is one month long and the other is one day long. This study
shows that interdomain paths are stable for a large majority of the
traffic from a routing viewpoint. We show that the aggregation of
the traffic occurring on the AS-level graph is essentially limited to
direct peers, with almost no aggregation occurring at larger AS hop
distances. Furthermore, only part of the AS paths of the AS-level
topology that see a lot of traffic are stable, when considering their
presence among the largest AS paths on a hourly basis. Relying
on the largest AS paths in traffic over a time window to capture the
traffic over the next time interval discloses the important variability
of the traffic seen by the largest AS paths in traffic. Interdomain
traffic engineering is hence due to be difficult because of the limited
traffic aggregation on the AS-level topology and the important
topological variability of the traffic for a significant percentage of
the total traffic.

S. Uhlig, V. Magnin, O. Bonaventure, C. Rapier and L. Deri
19th ACM Symposium on Applied Computing, Special Track on Computer Networks, March 2004.
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