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Understanding IPv6: The Necessity and Benefits of Transitioning from IPv4

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As the Internet runs out of IPv4 addresses, the transition to IPv6 becomes essential for future growth. This guide outlines the history and urgency of adopting IPv6 after the Internet Assigned Numbers Authority allocated its last IPv4 blocks in February 2011. Regional Internet Registries (RIRs) such as APNIC, RIPE, and ARIN are at the forefront of this change. Key events like World IPv6 Day on June 8, 2011, and findings from major companies highlight the importance of IPv6. Embrace the innovations of IPv6 with its vast address space and improved networking capabilities.

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Understanding IPv6: The Necessity and Benefits of Transitioning from IPv4

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  1. IPv6

  2. Why IPv6? • Running out of IPv4 addresses • Internet Assigned Numbers Authority allocated the last 5 /8 blocks on 3 Feb 2011 • 5 RIRs (Regional Internet Registries) • APNIC – Asia, Australia, New Zealand • RIPE – Europe, Middle East, Central Asia • ARIN – US, Canada, Antarctica, some Caribbean • LACNIC – Latin America, Caribbean • AfriNIC - Africa

  3. Why IPv6 (contd) • APNIC • Ran out of freely allocated addresses on 15 April 2011 • RIPE • Expected to be next • Rest run out in 6 months to several years • In reality, with restricted allocation policies there may be addresses available for a few years yet.

  4. IPv6 Videos • IPv6 Video – Part 1 • 1:41 – 4:18 • 5:30 – 11:50 • IPv6 Video – Part 2 • 0:27 – 9:20 • IPv6 Video – Part 3 • 0:21 – 4:35

  5. Deployment • World IPv6 day- 8 June 2011 • Test of IPv6 • Major web companies and others in industry enabled IPv6 on their main websites for 24 hours (Facebook, Google, Yahoo, others) • An additional goal was to motivate ISPs, etc. to prepare their services for IPv6 • Results: • Major carriers measured the percentage of IPv6 traffic of all Internet traffic as increasing from 0.024 to 0.041 • The largest increase was to Google sites • Early results indicated that the day passed according to plan and without significant problems for the participants • Cisco and Google reported no significant issues during the test • Facebook called the results encouraging, and decided to leave their developer site IPv6-enabled as a result

  6. Deployment (contd) • But the consensus was that more work needed to be done before IPv6 could consistently be applied • Google deploys IPv6 for internal network

  7. Need to Know • IPv6 Improvements • IPv6 Addresses and Format • 8 blocks, 16 bits each -> total 128 bits • Uses hex numbering scheme • How to represent/read IPv6 addresses • IPv6 address types and uses • Subnetting • Prefix/Host division • 3 block prefix, 4th block for subnets, last 4 blocks for hosts

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