Expectation for IPv6

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

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IPv6s 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

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IPv6s 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
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IPv6s 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

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IPv6s Operational Merit

• Easy Operation result in Cost down
• Avoid missconfiguration
• Plug and Play
• Only power on
• Remote configuration after that

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Operational Issues Current IPv6 Networks

• Routing Protocol
• Current Practice - RIPng or BGP4-gtEnough
  scalablity?
• Stable service transition?
• Nightmare of management
• Lack of management tools
• SNMP Manager,DNS tools etc
• IPv6 network management through IPv4 network?
• Transition Process?

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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

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