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IPv6 Operational Issues and Merits

This article discusses the operational issues faced with IPv4 and the merits of transitioning to IPv6. Topics covered include IP address exhaustion, routing information increase, multihoming issues, traffic volume explosion, and the operational advantages of IPv6 such as address aggregation and easy operation.

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IPv6 Operational Issues and Merits

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  1. Expectation for IPv6 Dec.19th, 2000 Noriyuki Kishikawsa NEC Corporation

  2. Operational Issues : IPv4 • IP Address exhaustion on rapid growth • Restriction of RFC 2050 • 25% immediate utilization rate • 50% utilization rate within 1 year • Increase of Routing Information • EGP 90000 Routes • IGP • Multihoming issues: EGP/IGP design • Explosion of Traffic volume • Increase of Managed Objects

  3. IPv6’s Operational Merit • No need to consider IP Address Utilization • Free from RFC 2050 • Less Restriction of IP address Design • 65535 (/48) Networks per User • Unlimited address assignment in each segment

  4. IPv6’s Operational Merit • IP addressing architecture based on Aggregation • Categorized in 3 Level Routing • Top Level 13bit • Next Level 24bit • Site Level 16bit TOP Level Only routing Information Next Level Only routing Information Site Level Only routing Information

  5. IPv6’s Operational Merit • Multi prefix assignment for each site • ISP has no need to care specific prefix • Users don't be bound to one ISP • Flow based high speed switching for stream application • InterDomain QoS  Intra domain QoS =MPLS • End to End QoS

  6. IPv6’s Operational Merit • Easy Operation result in Cost down • Avoid missconfiguration • Plug and Play • Only power on • Remote configuration after that

  7. Operational Issues :Current IPv6 Networks • Routing Protocol • Current Practice － RIPng or BGP4+->Enough scalablity? • Stable service transition? • Nightmare of management • Lack of management tools • SNMP Manager,DNS tools etc • IPv6 network management through IPv4 network? • Transition Process?

  8. Transition Process • Premise • IPv6 will make a different world • IPv6IPv4: a few application • Application which must be translated is only Mail and Web in current day

  9. IPv6 Network Structure : Now IPv4 Web Host World Wide IPv4/IPv6 IPv6 over IPv4 IPv4 IPv6 over IPv4 • IPv4IPv6 Application Gateway • Web proxy • Mail GW • Dual-Stack Host IPv6 - 100 User

  10. IPv6 Network Structure : Future IPv4 Web Host World Wide Function Switch IPv4 Application Gateway IPv4/IPv6 IPv4/IPv6 IPv6 Cellular Phone Network

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