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Review of Internet Service Providers and Peering Matthew Renzelmann

Summary: Review of Internet Service Providers and Peering
Matthew Renzelmann
February 11, 2007
1 Introduction
This paper discusses the issues that lead ISPs to con-
sider peering or transit arrangements with one an-
other. Norton considers the technical reasons for
peering as well as the financial and political.
Norton explains that peering with another ISP re-
sults in lower transit costs and lower latency by avoid-
ing use of an upstream transit provider. ISPs might
avoid peering for a variety of reasons such as "traffic
asymmetry" in which traffic flows disproportionately
from one ISP to another. These issues and others
are collectively classified as "phase I," the first step
an ISP embarks on when deciding whether or not to
peer with another. The second phase simply involves
initiating contact with the other ISP and determining
whether they too are interested in a peering arrange-
ment. The third, and final phase considers all the


Source: Akella, Aditya - Department of Computer Sciences, University of Wisconsin at Madison


Collections: Computer Technologies and Information Sciences