Telecommunications Networking IIInternet Time LineSlide 3Slide 4Slide 5Internet Applications (today)Internet TrendsWho’s in Charge (nobody)SummaryCopyright 1999, S.D. Personick. All Rights Reserved.Telecommunications Networking IILecture 29Introduction to the InternetRef: “Computer Networks”(Andrew Tanenbaum)pp47-54, 70-72Copyright 1999, S.D. Personick. All Rights Reserved.Internet Time Line•1962 Paul Baron proposes the concept of utilizing packets to transport information between computers•1969 ARPAnet placed in service (4 nodes)•1974 Cerf and Kahn invent TCP/IP•circa 1988 NSFnet•1990 ANS takes over operation of NSFnetCopyright 1999, S.D. Personick. All Rights Reserved.Internet Time Line•1990 1 millionth host attached to “the Internet” •1995 NSFnet is decommissioned, and replaced by the “Network Access Point” (NAP) architecture•1995+ Rapid growth of Internet usage by businesses, organizations, government and individuals (E-mail, WWW, E-commerce)Copyright 1999, S.D. Personick. All Rights Reserved.Internet Time Line•~2000 Aggregate Internet backbone traffic exceeds traditional telephone network traffic in the U.S. (~ 2 Tbps)•~2000 Traditional telephone network applications begin to rapidly migrate to IP-versions (e.g., telephony)•~2005 Large numbers of residential customers have broadband access to the Internet (cable modems and XDSL)Copyright 1999, S.D. Personick. All Rights Reserved.Internet Time Line•~ 2005 Traditional telephone network usage and revenues are in rapid decline**Some would argue that this is too pessimistic; particularly with the popularity of cellular/PCSCopyright 1999, S.D. Personick. All Rights Reserved.Internet Applications (today)•E-mail•WWW + E-Commerce•News groups/Chat rooms •Bulk file transfers (including music)•Downloading application software•Remote login and remote control•DNS•Broadcasting (audio and video)•Telephony (emerging)Copyright 1999, S.D. Personick. All Rights Reserved.Internet Trends•Multimedia versions of earlier applications (e.g., attachments to plain text E-mail)•Broadband access by end users•“Internet dial tone”•Improved security and reliability•Quality of Service (QOS) capabilities•New Applications (e.g., Internet telephony)•Next Generation Internet (e.g., “active nets”, new network architectures)Copyright 1999, S.D. Personick. All Rights Reserved.Who’s in Charge (nobody)•Internet services are not regulated by the FCC (at least not directly) in the U.S.•The Internet is a global enterprise (transcends national boundaries)•Technical standards are adopted by the Internet Engineering Task Force (so far)•The Internet Society (IAB, IETF)•IANNA..., service providers, equipment suppliers, ...Copyright 1999, S.D. Personick. All Rights Reserved.Summary•The Internet is an organically evolving collection of networks, protocols, technologies, and applications•The Internet is embodied in a philosophy of rapidly responding to customer-driven needs •The Internet is still in its adolescence (money brings out the worst in
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