1 Dave Wilson DW238-RIPE A strategic approach to IPv6.

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Presentation transcript:

1 Dave Wilson DW238-RIPE A strategic approach to IPv6

2 What this talk is (not) This is not a talk about HEAnet’s ipv6 deployment –We finished several years ago. This is about what comes after.

3 This is how we pictured the transition 15 years ago: What’s the problem? IPv6 Deployment IPv4 Pool Size Size of the Internet IPv6 Transition using Dual Stack Time Geoff Huston,

4 This is where we are now: Transition plan IPv6 Deployment IPv4 Pool Size Size of the Internet IPv6 Transition Today Time ? Geoff Huston,

5 The gap So the problem we face is the gap between the end of the old way (IPv4) and the start of universal IPv6 We need to deal with IPv4 depletion – IPv6 won’t save us in time We need to prepare for IPv6-only world We need to shorten the gap as much as possible

6 Three strands 1. IPv4 depletion 2. Truly IPv6-only service (with IPv4 interop) 3. Supporting our customers & partners

7 1 What do we do about IPv4?

8 Bring it home with a graph Projections are converging on ~2011 Immediacy of problem depends on rate of usage This can escalate into a crisis

9 Fixing IPv4 Sure we can find individual solutions for... –SSL web servers –Videoconferencing –Providing VPNs – for individual customers (so one doesn’t cause another to be blacklisted) Can we really do all this at the same time? Our objective is a smooth, stable transition

10 We’ve done this before

11 Coordinate Plan for this strand is... List everything we do Work out its needs for coming five years Pick a workaround if we can’t meet those needs Then make all workarounds mutually achieveable

12 Strand 1 Obviously these plans will be subject to change –Business opportunities, pressures, changes –Winds of time and fate –“Oh, I forgot about that” Gets us a first look at how we’re doing compared to the availability of space Gets us thinking about what might have to go, or what might have to change

13 1 What do we do about IPv4?

14 2 What do we need to do with IPv6?

15 Strand 2 We have reached a technical milestone –Our services are capable of running on IPv6 This is not endgame. Endgame is a working service. We can define this service: –A working IPv6 internet service, end-to-end, with clients, routing and services, which interoperates with the IPv4 internet Then we can start to unpick it

16 Strand 2 Why is the IPv6-only part so important? It is the definition of our end game. Working service. This is a big deal. We need to plan to turn off IPv4 in finite time. Unless we plan for this, we will never reach a network independent of IPv4.

17 Strand 2 Some dependencies Make it work end to end Refine them to get to production

18 2 What do we need to do with IPv6?

19 3 What do we need to do about the rest of the world?

20 Strand 3 This is where all those dependencies we stripped out of earlier strands start to clutter But it also gets the benefit of the work being done in the other two strands –It’s already started. Hopefully some of you are already making spreadsheets with your IPv4 services. –Start to think in terms of compromises on v4 service –Start to show measurable progress on a plan toward a real IPv6 only service

21 Strand 3 We’ve been focusing heavily on straw men –“I’ll deploy IPv6 when has a AAAA record” –“(please read small print)” –“Market demand...” –“Strongly encouraged...” –“If only there was [material of dubious academic value] for free on IPv6, then it would take off” The thing that’s missing here is any kind of strategy - some plan to reach a goal

22 My least favourite question What’s the business case? Why you do something What are the options What are the benefits and disbenefits What are the timescales and costs What are the risks

23 Strand 3 Detail our strategy Discussion about translation and workarounds Identify tools and documentation needed by customers Draft business cases Showcase IPv6 only service

24 The plan We’re working out the compromises in advance if we have no more IPv4 addrs We’re working out what lies between us and an IPv6 service our customers can use Given these, we’re working out how to help our customers and suppliers justify the change

25 DW238-RIPE Thank you!