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Ian Rice

Ian Rice. Network Management 44049. May 4 th , 2009. As of October 2008. As of April 2009. Address. 128-bit long. 4x larger that IPv4 340,282,366,920,938,463,463,374, 607,431,768,211,456 addresses Standard completed in 1996 9 of the 13 root servers have IPv6 root glue.

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Ian Rice

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  1. Ian Rice Network Management 44049 May 4th, 2009

  2. As of October 2008

  3. As of April 2009

  4. Address • 128-bit long. 4x larger that IPv4 • 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses • Standard completed in 1996 • 9 of the 13 root servers have IPv6 root glue

  5. Computers that are IPv6 capable • Mac OS- 2.44% • Linux - 0.93% • Vista - 0.32% • XP - 0.03%

  6. Backwards compatibility • In order to aid the transition from IPv4 to IPv6, current IPv4 address are being embedded into IPv6 address in a way that allows them to be recognized as IPv4 addresses by IPv6 devices.

  7. IPv4-compatible IPv6 address • Two types of addressing schemes to accommodate IPv4 • All zeros until the last 32 bits for devices capable of both IPv4 & IPv6 aka IPv6 aware

  8. IPv4-Mapped IPv6 Addresses • First 80 bits are zeros followed by 16 ones (FFFF) means that the devices whose IP address has been mapped is incapable of IPv6

  9. Reserved Addresses • 0:0:0:0:0:0:0:1 • Anycast • Link-Local • Multicast

  10. Interface ID • Takes the MAC address and splits into 3-byte half's and between them insets ‘FFFE’ and flipping the 7th bit of the first byte to a binary 1 in order to fulfill the 64-bit interface.

  11. What’s New… • Neighbor Discovery (ND) Protocol • Link-layer addresses • Hop Limit • Jumbogram • 4.294967295 GB • Stateless address autoconfiguration • Uses ICMPv6 discovery Message • Or stateful configuration using DHCPv6

  12. Neighbor Discovery • To determine neighbors known to reside on attached links and purge invalid values • Also aids in finding routers • Keep tables of reachable/unreachable neighbors and to determine any changed link-layer addresses • Actively searches for alternatives if failure occurs

  13. Options

  14. "Google: more Macs mean higher IPv6 usage in US - Ars Technica." Ars Technica. 4 May 2009 <http://arstechnica.com/apple/news/2008/11/google-more-macs-mean-higher-ipv6-usage-in-us.ars>. • "IPv6 Address Types." Technical documentation. 4 May 2009 <http://docs.hp.com/en/B2355-90824/ch02s03.html>. • Morr, Derek. "Living with IPv6." Living with IPv6. 29 Apr. 2009. 4 May 2009 <https://blogs.psu.edu/mt4/mt-search.cgi?IncludeBlogs=115&search=ipv4>. • "RFC 2373 - IP Version 6 Addressing Architecture." IETF Tools. 4 May 2009 <http://tools.ietf.org/html/rfc2373>. • "RFC 2461 (rfc2461) - Neighbor Discovery for IP Version 6 (IPv6)." Internet RFC/FYI/STD/BCP Archives. 4 May 2009 <http://www.faqs.org/rfcs/rfc2461.html>. • "RFC 2675 (rfc2675) - IPv6 Jumbograms." Internet RFC/FYI/STD/BCP Archives. 4 May 2009 <http://www.faqs.org/rfcs/rfc2675.html>. • "The TCP/IP Guide - IPv6/IPv4 Address Embedding." Welcome to The TCP/IP Guide!. 4 May 2009 <http://www.tcpipguide.com/free/t_IPv6IPv4AddressEmbedding-2.htm>. • Vegoda, Leo. "IPv6 Deployment - Global Perspective." IANA. 13 Oct. 2008. 4 May 2009 <www.iana.org/about/presentations/vegoda-dakar-ipv6-081013.pdf>. • "WHAT'S IPv6?." Information Services: University of Oregon. 4 May 2009 <http://cc.uoregon.edu/cnews/spring2001/whatsipv6.html>. • "What is network discovery? - Windows Vista Help." Windows Vista Help and How-to. 4 May 2009 <http://windowshelp.microsoft.com/Windows/en-us/help/0e5f2e0c-9906-4518-b7c7-d3632105dcad1033.mspx>.

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