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COSC 541 Data and Computer Communications

COSC 541 Data and Computer Communications. IPV6 OVERVIEW. Professor: Mort Anvari Student: Fuqiang Chen Student ID: 122647 Date: Mar.16.2002. Definition. IP version 6 (IPv6) is a new version of the Internet Protocol, designed as a successor to the current IP version 4 (IPv4).

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COSC 541 Data and Computer Communications

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  1. COSC 541 Data and Computer Communications IPV6 OVERVIEW Professor: Mort Anvari Student: Fuqiang Chen Student ID: 122647 Date: Mar.16.2002

  2. Definition • IP version 6 (IPv6) is a new version of the Internet Protocol, designed as a successor to the current IP version 4 (IPv4). • Next generation (IPng) • Coexistence (IPv6 & IPv4) • Migration (from IPv4 to IPv6) • specifications from Internet Engineering Task Force (IETF)

  3. Why IPng? • Problem in IPv4 • The recent exponential growth of the Internet and the impending exhaustion of the IPv4 address space • The growth of the Internet and the ability of Internet backbone routers to maintain large routing tables. • The need for simpler configuration.

  4. Why IPng? • Problem in IPv4 • The requirement for security at the IP level . • The need for better support for real-time delivery of data—also called quality of service (QoS).

  5. Improvement (1) • The most obvious improvement in IPv6 over the IPv4 • IP Addresses are lengthened from 32 bits to 128 bits • Additional advantages of IPv6 • Will be seen in Improvement (2)

  6. Transition Criteria • The designers of IPv6 in the original “The Recommendation for the IP Next Generation Protocol” specification defined the following transition criteria: • Existing IPv4 hosts can be upgraded at any time, independent of the upgrade of other hosts or routers. • New hosts, using only IPv6, can be added at any time, without dependencies on other hosts or routing infrastructure. • Existing IPv4 hosts, with IPv6 installed, can continue to use their IPv4 addresses and do not need additional addresses • Little preparation is required to either upgrade existing IPv4 nodes to IPv6 or deploy new IPv6 nodes.

  7. IPng Design • Expanded Routing and Addressing Capabilities • A new type of address called a "anycast address" is defined • Header Format Simplification • Improved Support for Options • Quality-of-Service Capabilities • Authentication and Privacy Capabilities

  8. IPng Address Type • Unicast • identify a single interface • Anycast • identify a set of interfaces such that a packet sent to a anycast address will be delivered to one member of the set • Multicast • identify a group of interfaces, such that a packet sent to a multicast address is delivered to all of the interfaces in the group

  9. IPv6 Address Syntax • IPv4 addresses are represented in dotted-decimal format • For IPv6, the 128-bit address is divided along 16-bit boundaries, and each 16-bit block is converted to a 4-digit hexadecimal number and separated by colons • 21DA:00D3:0000:2F3B:02AA:00FF:FE28:9C5A • 21DA:D3:0:2F3B:2AA:FF:FE28:9C5A

  10. Improvement (2) – IPv6 Feature • New header format • Large address space • Efficient and hierarchical addressing and routing infrastructure • Stateless and Stateful Address Configuration • Built-in security • New protocol for neighboring node interaction • Extensibility

  11. Dual IP Layer

  12. IPv6 Implementations • Macintosh • No released version of Mac OS 9, Mac OS X or any other version of Mac OS has support for IPv6 • Linux • kernels version 2.2 and above ship with an IPv6 implementation built in • Solaris • Solaris 8 ships with an IPv6 implementation built in • Windows • Microsoft Windows XP includes an IPv6 implementation intended for development use and trial network deployments • an add-on IPv6 implementation for Windows 2000 available for developer use • http://msdn.microsoft.com/downloads/sdks/platform/tpipv6.asp

  13. For More Information • Microsoft’s support for IPv6 • http://www.microsoft.com/ipv6 • Latest information on IPv6 • http://www.ietf.org/html.charters/ipv6-charter.html • Latest information on standards-based IPv6 deployment planning • http://www.ietf.org/html.charters/ngtrans-charter.html

  14. Thank you Have a good day!

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