0_TCPIPOverview_spring2010

0_TCPIPOverview_spring2010 - Chapter 0 TCP/IP Overview...

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TCP/IP Essentials A Lab-Based Approach Chapter 0 Chapter 0 TCP/IP Overview TCP/IP Overview Spring 2010
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Polytechnic Institute of NYU Slide 2 zjzhao The Internet A global information system consisting of millions of private and public, academic, business, and government “computer” networks around the world. The Internet carries a vast array of information resources and services. •Users: individuals and organizations in more than 200 countries •Applications: email, web page, access to remote computer •Services: on-line banking, shopping
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Polytechnic Institute of NYU Slide 3 zjzhao Internet History •Late 1960s, ARPA sponsors the development of a packet-switching network, called the ARPANET. •1974, The TCP/IP protocols and model are proposed by Cerf and Kahn. •1983, ARPANET adopts TCP/IP. At this time, the ARPANET has 200 routers. •1984, NSF funds a TCP/IP based backbone network. This backbone grows into the NSFNET, which becomes the successor of the ARPANET. •1995, NSF stops funding the NSFNET. The Internet is completely commercial. •1996, TCP/IP in Windows and Windows NT. •2000, conversion to IPv6 standardized.
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Polytechnic Institute of NYU Slide 4 zjzhao Internet – An FNC’s Definition On October 24, 1995, the Federal Networking Council* (FNC) unanimously passed a resolution defining the term Internet. RESOLUTION: "Internet" refers to the global information system that •is logically linked together by a globally unique address space based on the Internet Protocol (IP) or its subsequent extensions/ follow-ons; •is able to support communications using the Transmission Control Protocol/Internet Protocol (TCP/IP) suite or its subsequent extensions/follow-ons, and/or other IP-compatible protocols; and •provides, uses or makes accessible, either publicly or privately, high level services layered on the communications and related infrastructure described herein.
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Polytechnic Institute of NYU Slide 5 zjzhao Internet Standard Control • Internet Society (ISOC): a professional membership organization that comments on policies, practices, and oversees others dealing with network policy issues. • Internet Architecture Board (IAB): responsible for defining overall architecture of the Internet with guidance and broad direction to the IETF. • Internet Engineering Task Force (IETF): responsible for protocol engineering and development. • Internet Research Task Force (IRTF): responsible for focused, long-term research. • Internet Corporation for Assigned Names and Numbers (ICANN): in charge of defining all “unique parameters” in the Internet, including domain names and IP addresses. ISOC DISA NSF IESG IRSG IETF IRTF RG RG IAB WG RG ICANN IANA NCO/IT R&D US Dept. of Commerce
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Polytechnic Institute of NYU Slide 6 zjzhao Internet Standardization Process A typical (but not only) way of standardization is: •Internet Drafts RFC (Request for Comments) •Proposed Standard •Draft Standard (requires 2 working implementation) •Internet Standard (declared by IAB) But We reject: kings, presidents, and voting. We believe in: rough consensus and running code.
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0_TCPIPOverview_spring2010 - Chapter 0 TCP/IP Overview...

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