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April 30, 2007 NYC network neutrality hearing Network Neutrality Prof. Henning Schulzrinne Dept. of Computer Science Columbia University.

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Presentation on theme: "April 30, 2007 NYC network neutrality hearing Network Neutrality Prof. Henning Schulzrinne Dept. of Computer Science Columbia University."— Presentation transcript:

1 April 30, 2007 NYC network neutrality hearing Network Neutrality Prof. Henning Schulzrinne Dept. of Computer Science Columbia University

2 April 30, 2007 NYC network neutrality hearing How to be non-neutral Block web sites (“IP addresses”) Block ports = specific applications Underprovision general Internet access –artificially delay or drop certain packets Reserving bandwidth on fiber for carrier

3 April 30, 2007 NYC network neutrality hearing Not just web access New applications: video access, VoIP, video conferencing,... –ensure competition in services much more likely than shutting off a PhoneCompanySucks web site or charging Google otherwise, only telco/CATV provider can provide HDTV video-on- demand or streaming video –Internet technology allows separation of bit carriage and services May need quality of service guarantees Example: Madison River (2005) –but, so far, few in the US

4 April 30, 2007 NYC network neutrality hearing The role of competition Assumption of competition and information Not generally true: –monopoly or, at best, duopoly –high switch-over costs (equipment costs, minimum contract durations, email addresses,...) –no service information for consumers ports blocked? bandwidth caps? actual speeds (“up to X Mb/s” is not useful)

5 April 30, 2007 NYC network neutrality hearing Guidelines for content neutrality Nothing new: old common carrier notion Content neutrality –no differentiation by destination or traffic type (except attacks or spam) –bandwidth-based traffic shaping and metering, if necessary Consumer information to allow informed choice Long term: separation of infrastructure and service –last-mile fiber, conduits and air waves are natural monopolies Long term: competition through public infrastructure

6 April 30, 2007 NYC network neutrality hearing Quality of service and network neutrality Argument: QoS requires violating network neutrality Not necessarily: –can provide content neutral mechanisms –e.g., monthly quota for prioritized traffic –charge extra for high priority traffic, regardless of source or destination


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