IPv6 Unicast Address Assignment Considerations

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IPv6 Unicast Address Assignment Considerations

• Gunter Van de Velde (editor), Tim Chown, Ciprian
  Popoviciu, Olaf Bonness, Christian Hahn

IETF 66, July 12th 2006 Montreal, PQ
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• Agenda
• Document Overview
• Changes made based on WG feedback
• Service Provider Case Study
• Next steps

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Document Overview

• This draft aims to provide address planning
  considerations for IPv6 deployments
• This draft also provides examples of address
  plans for different kinds of networks Enterprise
  and Service Provider

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Document Overview (cont.)

• Planning considerations discussed within various
  scopes
• Network level
• Subnet level
• Host level
• Case Studies
• Enterprise Considerations University of
  Southampton
• Service Provider Considerations T-Systems

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Changes Made Based on WG Feedback

• Document was adopted as a WG work item
• Editorial changes
• Added a note on ULA vs (legacy) site-local
  addresses mentioning potential impact during
  renumbering and transitioning between the two
  types of addresses
• The Provider Independent address space was not
  discussed. Thoughts?
• http//www.arin.net/policy/proposals/2006_4.html
• Included a note on the NAP scattering principles
  when segmenting into /64
• No discussion on multihoming

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Changes Made Based on WG Feedback (cont.)

• Added more detail on the structure of the Anycast
  address and usage considerations
• Embedded-RP section
• Clarified text, mention that there are 15
  possible addresses that can be used for Embedded
  RP (not for multicast in general)
• Using these addresses is not a constraint, i.e.
  you can use these addresses for non-RP devices,
  but you may regret it later, so just bear that in
  mind
• Noted that CGA addresses are indistinguishable
  and that similar considerations apply

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Service Provider Considerations

• Case Study
• Planning considerations are analyzed from the
  perspective of the various roles played by the
  SP
• LIR
• ISP
• Network Access Provider
• Planning considerations are analyzed from the
  perspective of the entity that is assigned
  address space
• SP infrastructure
• Large SP Customers
• Small SP Customers
• Observations

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Next Steps

• Looking forward to additional feedback
• Review of the Service Provider case study that
  was added to the document
• Please send comments to main editor
• Gunter Van de Velde - gvandeve_at_cisco.com

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• THANK YOU!