IPv6 Operations v6ops WG

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IPv6 Operations (v6ops) WG

• Margaret Wasserman
• IETF 56 San Francisco
• March 2003

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v6ops WG Summary

• IPv6 Operations (v6ops)
• Chairs
• Bob Fink ltbob_at_thefinks.comgt
• Jun-ichiro Hagino ltitojun_at_iijlab.netgt
• Margaret Wasserman ltmrw_at_windriver.comgt

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v6ops Summary

• Develop guidelines for the operation of a shared
  IPv4/IPv6 Internet
• Provide guidance to operators on how to deploy
  IPv6 in existing IPv4 networks and new networks
• Focus on operational and security concerns in
  shared IPv4/IPv6 environments

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IPv4/IPv6 Coexistence

• Focus is on IPv4/IPv6 coexistence
• We have a shared IPv4/IPv6 Internet today and
  will for the predictable future
• Transition is for our grandchildren

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Scenarios and Analysis

• Determine scenarios for IPv6 deployment in four
  environments
• 3GPP Cellular Networks
• Unmanaged Networks
• Enterprise Networks
• ISP Networks
• Analyze scenarios and identify needed coexistence
  mechanisms

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3GPP Scenarios/Analysis

• Documents nearly complete
• Scenarios currently in WG last call
• Both to be reviewed by 3GPP in April/May
• Identifies need for
• Dual stack
• Some type of translation mechanism for IMS
  subsystem -- may be SIP-specific

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Unmanaged Scenarios/Analysis

• Documents nearly complete
• Scenarios in WG last call
• Identifies need for
• Dual stack
• Mechanism to traverse IPv4 NAT
• Teredo and/or UDP tunneling
• 6to4 and Tunnel Broker

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Enterprise and ISP Efforts

• Scenarios documents underway
• Need more input from enterprise and ISP
  operators, please help!

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Coexistence Mechanisms

• v6ops is responsible for some existing
  coexistence mechanisms at PS
• Transition mechanisms, SITT, NAT-PT, 6to4
• Updated to transition mechanisms underway
• Starting work on SIIT/NAT-PT applicability
• Work on new mechanisms will be undertaken when
  applicability is demonstrated by
  scenarios/solutions work

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Security and Reliability

• Running IPv4 and IPv6 together raises issues for
  security and reliability
• Which to use when both are available?
• Building secure shared IPv4/IPv6 networks
• Extensive use of tunneling will present
  operational and security concerns
• Important to understand security model and
  interaction between tunnels and firewalls
• Some issues identified with having IPv6 on by
  default in dual stack nodes

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Dual Stack vs. NAT-PT

• Currently discussing applicability of NAT-PT vs.
  Dual Stack
• Dual stack end-nodes are preferable in most cases
  -- use v4 to talk to v4, and v6 to talk to v6
• NAT-PT has scaling and operational problems of
  IPv4 NAT -- used only when alternative is IPv4
  NAT?

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Document Review

• Difficulty getting adequate review for
  solutions/scenarios work
• WG chairs are forming a review team to achieve
  quality document review
• Need operator and security volunteers for this
  team