ECONOMICS OF THE INTERNET BACKBONE By Nicholas Economides* October 2004 Abstract This paper discusses the economics of the Internet backbone. I discuss competition on the Internet backbone as well as relevant competition policy issues. In particular, I show how public protocols, ease of entry, very fast network expansion, connections by the same Internet Service Provider (“ISP”) to multiple backbones (ISP multi-homing), and connections by the same large web site to multiple ISPs (customer multi-homing) enhance price competition and make it very unlikely that any firm providing Internet backbone connectivity would find it profitable to degrade or sever interconnection with other backbones in an attempt to monopolize the Internet backbone. th * ** Stern School of Business, New York University, 44 West 4 Street, New York, NY 10012, (212) 998-0864, fax (212) 995-5218, http://www.stern.nyu.edu/networks/, e-mail: mailto:
[email protected], and Executive Director, NET Institute, http://www.NETinst.org. 2 Contents I. COMPETITION AMONG INTERNET BACKBONE SERVICE PROVIDERS.......................... 3 A. INTERNET BACKBONE SERVICES....................................................................................................... 3 B. INTERCONNECTION ........................................................................................................................... 6 C. THE TRANSIT AND PEERING PAYMENT METHODS FOR CONNECTIVITY............................................. 8 D. CONDUCT OF INTERNET BACKBONE SERVICE PROVIDERS .............................................................