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Implications and Realities of IPv6 Christian Huitema Architect, Windows ® Networking Microsoft ® Corporation
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How will IPv6 change the world? Global addressing: Global addressing: 64+64 format: 1.8E+19 networks, units 1E+16 networks, assuming IPv4 efficiency 1 million networks per human 2 networks per sq.ft of Earth (20 per m 2 ) Plug and play: Plug and play: IP networking easier than IPX Efficient mobility: Efficient mobility: Simple instant-on ad-hoc networking Mobile IP, without servers, without dogleg
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Problem 1: Peer-to-peer RTP audio example With NAT: With NAT: Need to learn the address “outside the NAT” Provide that address to peer Need either NAT-aware application, or application-aware NAT May need a third party registration server to facilitate finding peers Home LAN Internet P1 NAT Home LAN P2 NAT
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Solution 1: Peer-to-peer RTP audio example With IPv6: With IPv6: Just use IPv6 address P1P2 Home LAN Internet Home Gateway Home LAN Home Gateway
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Problem 2: Multiparty Conference Example With NAT, complex and brittle software: With NAT, complex and brittle software: 2 Addresses, inside and outside P1 provides “inside address” to P3, “outside address” to P2 Need to recognize inside, outside P1 does not know outside address of P3 to inform P2 P1P2 P3 Home LAN Internet NAT Home LAN NAT
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Solution 2: Multiparty IPv6 Conference Example With IPv6: With IPv6: Just use IPv6 addresses P1P2 P3 Home LAN Internet Home Gateway Home LAN Home Gateway
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Problem 3: Ad-hoc networking IPv4: media lock + 63 sec. IPv4: media lock + 63 sec. Try DHCP Wait for timeout Select AutoNet address Conflict detect
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Solution 3: Ad-hoc networking IPv6: media lock + 1 sec. IPv6: media lock + 1 sec. Configure using MAC Conflict detect
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‘cell’ B Problem 4: Move from “cell” to “cell” IPv4: IPv4: Tell server, Packets are relayed through the server P1 P2 ‘cell’ A Internet Relay
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‘cell’ B Solution 4: Move from “cell” to “cell” with IPv6 IPv6: IPv6: Tell server + peer Packets take direct path P1 P2 ‘cell’ A Internet Relay
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If IPv6 is so great, how come it is not there yet? Network Network No “push-button” transition Need to ramp-up investment Applications Applications Need upfront investment, stacks, etc. Similar to Y2K, 32 bit vs. “clean address type”
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Pure “Version 6” Internet Original “Version 4” Internet 6to4 Site Transition, with 6to4: No dependency on “core”
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6to4 addresses: 1 v4 address = 1 v6 network Stateless tunnel over the IPv4 network without configuration Stateless tunnel over the IPv4 network without configuration The IPv6 address contains the IPv4 address Entire campus infrastructure fits behind single IPv4 address FP (3bits)TLA (13bits)IPv4 Address (32bits)SLA ID (16bits)Interface ID (64bits) 0010x0002ISP assignedLocally administeredAuto configured
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Recent Press on IPv6 May 16, 2000 — The nationwide Internet2™ backbone network, Abilene, today announced it has deployed IPv6, the next generation version of protocols that form the basis of the Internet. … a project of the University Corporation for Advanced Internet Development (UCAID) in partnership with Qwest Communications, Cisco Systems, Nortel Networks and Indiana University May 16, 2000 — The nationwide Internet2™ backbone network, Abilene, today announced it has deployed IPv6, the next generation version of protocols that form the basis of the Internet. … a project of the University Corporation for Advanced Internet Development (UCAID) in partnership with Qwest Communications, Cisco Systems, Nortel Networks and Indiana University May 15, 2000 — Apple® today released its fourth developer preview of Mac® OS X … The pre-release of IPv6 and IPsec technologies for Mac OS X is available for Developer Preview-4. May 15, 2000 — Apple® today released its fourth developer preview of Mac® OS X … The pre-release of IPv6 and IPsec technologies for Mac OS X is available for Developer Preview-4. May 08, 2000 — Nokia has established a company-wide program to promote the IPv6 (Internet Protocol version 6) standard for increased Internet address space for the Mobile Internet. May 08, 2000 — Nokia has established a company-wide program to promote the IPv6 (Internet Protocol version 6) standard for increased Internet address space for the Mobile Internet. March 20, 2000 — Japanese telecommunications giant NTT last week announced the first commercial Internet service supporting IPv6 … March 20, 2000 — Japanese telecommunications giant NTT last week announced the first commercial Internet service supporting IPv6 … March 14, 2000 — Cisco Systems, the leading provider of Internet routers, this week affirmed for the first time that its software and hardware products will support IPv6 … IOS software, scheduled to ship in October. March 14, 2000 — Cisco Systems, the leading provider of Internet routers, this week affirmed for the first time that its software and hardware products will support IPv6 … IOS software, scheduled to ship in October. March 15, 2000 — Microsoft Corp. today announced it will make the technical preview of Internet Protocol version 6 (IPv6) available for free* download on the Microsoft Software Developers Network (MSDN TM ) Web site March 15, 2000 — Microsoft Corp. today announced it will make the technical preview of Internet Protocol version 6 (IPv6) available for free* download on the Microsoft Software Developers Network (MSDN TM ) Web site
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Microsoft Roadmap Phase 1 - March 1998 => MSR releases prototype for NT4 Phase 1 - March 1998 => MSR releases prototype for NT4 IPv6 on MSR Web Phase 2 - March 2000 => Early developer release for W2k Phase 2 - March 2000 => Early developer release for W2k IPv6 on MSDN Web Next phase: Next phase: Work on further IPv6 release Test and port applications, test the transition tools. Goal: IPv6 and IPv4 parity Goal: IPv6 and IPv4 parity Customer chooses! Eventually => IPv4 becomes legacy Eventually => IPv4 becomes legacy
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Key Messages Ipv6 direct addressing of all stations enables peer-to-peer, conferencing, auto-configuration, mobility. Ipv6 direct addressing of all stations enables peer-to-peer, conferencing, auto-configuration, mobility. Transition to Ipv6 akin to Y2K (upgrade all SW to 128-bit addresses) Transition to Ipv6 akin to Y2K (upgrade all SW to 128-bit addresses) To help industry move along this path, MSFT proposed a stack for Win2000 and MS will continue to iterate this based on industry feedback To help industry move along this path, MSFT proposed a stack for Win2000 and MS will continue to iterate this based on industry feedback
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For More Information Microsoft IPv6 Tech Preview News Microsoft IPv6 Tech Preview News http://www.microsoft.com/PressPass/pr ess/2000/Mar00/IPv6PR.asp Microsoft IPv6 Tech Preview Kit Microsoft IPv6 Tech Preview Kit http://msdn.microsoft.com/downloads/s dks/platform/tpipv6.asp Microsoft IPv6 white paper Microsoft IPv6 white paper http://www.microsoft.com/technet/netw ork/ipvers6.asp IPv6 industry site IPv6 industry site http://www.ipv6.org
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