Ryoko ‘maro’ NAKANISHI

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Panel DiscussionPanel Discussion『『 Service Migration in Ipv4/IPv6 Co-Service Migration in Ipv4/IPv6 Co-exsiting environment exsiting environment 　 　 　 　　 　 　 　　　 What we should do?What we should do?』』

Translated by Akira Kato

In a morning, there was an Oracle:

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Are　you　ready　for　Are　you　ready　for　

IPv6　service?IPv6　service?

Introduction

• Only a few years to IPv4 address depletion– Situation is getting serious– It is a matter of time that Ipv4 address

depletion happens.

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Is the problem only addr depletion?• Such problem has not been shared with

anybody other than L3 people– Too late to start something when IPv4

address space is once depleted

• Only a few providers provide IPv6 service– Especially datacenter operators

• Operational experience on IPv4/v6 co-exisitng environment? – Not only dual-stack is a solution

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…ということで プロローグ

•小人たちは集まります– Webサービスを提供するホスティング事業者は IPv6に対応できるか？を検討する•何が必要か•何に苦労するのか•ガッカリすることはなんだろう？•小人たちは IPv6にウットリできるんだろうか？

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A　scroll　of　Adventure

(1)　First　bake-off(1)　First　bake-off

(2)　Second　bake-off(2)　Second　bake-off

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First Bake-off

• Dwarves try it first– Does currently established technology

make IPv6 to follow IPv4's footsteps?•What is the key of network

confiugration?•Does it work at all?

– Any problem in service migration?•Is the migration an easy task?

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Design -1st stage-

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ADSL modem Existing BB Router

Additional BB Router

IPv4 test environment

IPv6 test environment

Second Bake-off

• The dwarves tries again– How IPv4/v6 translation works?– Is it possible to monitor IPv4/v6 ？– Make the toplogy more realistic– Communication test from an IPv6 only

client to an IPv4 server – How problems detected in IPv6

environment?

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Design -2nd stage-

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The dwarves got Level up !

The dwarves got Level up !

The results...

• The second bake-off didn't completed smoothly– Number of dungeons (like blackhomes)

around the clients– Many bugs in server-side– Monsters generated when dual stack

enabled– A cursed spells called “Specification”

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A　scroll　of　knowledges

(1)　A　sage　says(1)　A　sage　says　 　 「　 　 「What　problems　are　there　around　What　problems　are　there　around　the　client?the　client?」」(2)　Amage　said(2)　Amage　said　 　 「　 　 「What　is　server　dual　stacked?What　is　server　dual　stacked?」」(3)　A　warrior　says(3)　A　warrior　says　 　 「　 　 「 Create　the　network　environment　Create　the　network　environment　in　such　a　way!in　such　a　way!」」

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Introduction of Dwarves(Panelists)A　sage　to　govern　clientsA　sage　to　govern　clients

Yoshiaki Kitakughi (Intec Netcore)A　maze　around　the　serversA　maze　around　the　servers

Shin Shirahata (Clara Online)A　warrior　in　the　networksA　warrior　in　the　networks

Shingo Kudo (IPv6 Promotion Counsil

IPv4/IPv6 Co-exsiting WG Service migration Sub-WG co-chair)

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Summary• What obtained through expeirments

– Need to deliver the warning to all those woking in the network

• Other thoughts– Decision by the providers could

minimize the damage in the IPv4 address depletion issue.

– Everybody needs to realise the resposibility as a network operator not to impede the network development

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When you make a decision

• Use it• Get used to it• Bring it up• Train it• Raise the level• Look for customers who pay for it• Create services the customers pay

for

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WE　CAN　DO　!　WE　CAN　WE　CAN　DO　!　WE　CAN　DO　!!DO　!!

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It　is　a　nice　moment　to　start　the　IPv6　

services

THANK　YOU!

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