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  • Book Overview & Buying Understanding TCP/IP
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Understanding TCP/IP

Understanding TCP/IP

By : CP Books a.s.
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Understanding TCP/IP

Understanding TCP/IP

5 (1)
By: CP Books a.s.

Overview of this book

This book covers in detail the Open System Interconnection (OSI) reference model and the TCP/IP protocols that operate that different layers. Its coverage includes various application protocols. The authors explain in an easy-to-read style networking concepts and protocols, with examples that make the book a practical guide in addition to its coverage of theory.
Table of Contents (20 chapters)
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19
Index

Chapter 8. IP Version 6

The original IP version 4 protocol, specified by RFC 760 in January 1980, was replaced by RFC 791 in September 1981. IP version 6 was originally specified by RFC 1883 in December 1995. Presently, IP version 6 uses the RFC 2460 specification. IP version 6 was therefore referred to as IP the Next Generation (IPng).

Although the IP version 4 was robust at the time of its publication in 1981, it did not anticipate several Internet advances including:

  • The recent exponential growth of the Internet and the impending exhaustion of the IP version 4 address space
  • The need for simpler configuration
  • The requirement for security at the IP level
  • The need for better support for real-time delivery of data, also called quality of service

IP version 6 has not only enlarged the IP address size from 4 to 16 bytes, but also offers a revamped view of the IP datagram. Fields such as the header checksum as well as other infrequently used fields are now optional rather than mandatory...

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