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Summary: An Empirical Evaluation of WideArea Internet Bottlenecks
Aditya Akella Srinivasan Seshan
Computer Science Department
Carnegie Mellon University
Pittsburgh, PA 15213
aditya@cs.cmu.edu, srini+@cs.cmu.edu
Anees Shaikh
Network Services and Software
IBM T. J. Watson Research Center
Hawthorne, NY 10532
aashaikh@watson.ibm.com
ABSTRACT
Performance limitations in the current Internet are thought to lie at
the edges of the network -- i.e last mile connectivity to users, or ac
cess links of stub ASes. As these links are upgraded, however,
it is important to consider where new bottlenecks and hotspots
are likely to arise. Through an extensive measurement study, we
discover, classify and characterize nonaccess bottleneck links in
terms of their location, latency and available capacity. We find that
nearly half of the paths explored have a nonaccess bottleneck with
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