Presentation on theme: "Demystifying IPv6: Ensuring a Smooth Transition John Curran ARIN President & CEO This presentation describes the impending depletion of Internet Protocol."— Presentation transcript:
1 Demystifying IPv6: Ensuring a Smooth Transition John Curran ARIN President & CEO This presentation describes the impending depletion of Internet Protocol version 4 (IPv4) and the importance of adopting the next version of the Internet Protocol, Internet Protocol version 6 (IPv6). This issue impacts everyone and must be understood and acted upon to ensure the continued growth and operation of the Internet.
2 Quick History of the Internet Protocol Internet Protocol version 4 (IPv4, or just “IP”)First developed for the original Internet (ARPANET) in spring 1978Deployed globally with growth of the InternetTotal of 4 billion IP addresses availableUsed by every ISP and hosting company to connect customers to the InternetAllocated based on documented needInternet Protocol version 6 (IPv6)Design started in 1993 when IETF forecasts showed IPv4 depletion between 2010 and 2017Completed, tested, and available for production since 1999Total of 340,282,366,920,938,463,463,374,607,431,768,211,456 IP addresses availableUsed and managed similar to IPv4IPv6 provides a much larger pool of IP addresses. IPv6 is not backwards compatible with IPv4. The much larger IPv6 numbering system is meant to one day completely replace IPv4, but this will take many years. In the meantime, much of the Internet will run IPv4 and IPv6 simultaneously. This is necessary to ensure all users, regardless of the protocol version they are using, will be able to interact with all content on the Internet.
3 About IPv4 and IPv6 Internet Protocol version 4 (IPv4) Deployed19811999Address Size32-bit number128-bit numberAddress FormatDotted Decimal Notation:Hexadecimal Notation: 2001:0DB8:0234:AB00: 0123:4567:8901:ABCDPrefix Notation/242001:0DB8:0234::/48Number of Addresses232 = 4,294,967,2962128 = 340,282,366,920, 938,463,463,374,607,431, 768,211,456IPv4 address space has been used for decades to grow the Internet. When engineers deployed IPv4 in 1981, four billion IP addresses seemed like plenty. As the world caught on to the commercial possibilities of the Internet, though, engineers realized that the number of IP addresses simply wasn’t enough for all the laptops, mobile devices, web servers, routers, and other devices coming online. The first allocation of IPv6 address space by a Regional Internet Registry (RIR) to a provider was made in April of 1999.3
4 Available IPv4 /8s from IANA* The five RIRs each obtain IPv4 address space from the Internet Assigned Numbers Authority (IANA). The RIRs then use that IPv4 address space to satisfy requests for the resource in their respective regions. This slide indicates what has already been allocated to the RIRs, what is still available to the RIRs in the coming year(s), and what is unavailable. The unavailable address space includes Class D multicast address space, Class E experimental address space, and the address space identified in RFC 1918.*as of 8 May 2010
5 What We Know RIRs allocate, on average, 10-12 /8s each year worldwide There are 18 /8s remaining at the IANA as of 8 May 2010Demand for IPv4 continues from organizations around the worldWith anticipated increase in demand for IPv4 address space, the IANA free pool will likely be depleted around The RIRs would then only be left with their respective resource inventories that will likely be quickly depleted.
6 /8s Allocated by IANA to RIRs This slide shows the number of /8s the IANA allocated to the RIRs each year. Each RIR holds approximately months of inventory. Allocation rates from these inventories and the need for several RIRs to request additional /8s in a close timeframe may cause a spike in allocations from the IANA to the RIRs.IANA has allocated eight /8s so far in 2010.
7 Remaining IPv4 /8s from IANA IANA distributed nearly forty /8s to the RIRs over the last four years. Due to anticipated increase in demand, RIRs will likely deplete the IPv4 address pool by the end of 2011.IANA has allocated eight /8s so far in 2010.
8 What Will Happen (in no particular order) IPv4 demand continuesIPv4 free pool depletesIPv4 NAT use increasesIPv6 deploymentAs the RIRs continue to draw down the resource from the IANA free pool, the RIRs strongly encourage the adoption of IPv6. The RIRs will continue to distribute IPv4 address space according to current policy and will see the depletion of the free pool within the next two years. Service providers will naturally over-provision the IPv4 resources they already have and the Internet may see more Network Address Translation (NAT) devices. The rate of IPv6 adoption will accelerate as consumers realize the imminent depletion of the IPv4 resource. This impacts everyone.
9 The Bottom Line We’re running out of IPv4 address space IPv6 must be adopted for continued Internet growthIPv6 is not backwards compatible with IPv4We must maintain IPv4 and IPv6 simultaneously for many yearsIPv6 provides a much larger pool of IP addresses. IPv6 is not backwards compatible with IPv4. The much larger IPv6 numbering system is meant to one day completely replace IPv4, but this will take many years. In the meantime, much of the Internet will run IPv4 and IPv6 simultaneously. This is necessary to ensure all users, regardless of the protocol version they are using, will be able to interact with all content on the Internet.
10 RIRs have been allocating IPv6 address space since 1999 Thousands of organizations have obtained an IPv6 allocation to dateARIN has IPv6 distribution policies for service providers, community networks, and end-user organizationsThe RIRs began distributing IPv6 address space in Although thousands of organizations have obtained IPv6 resources to date, IPv6 has not been widely adopted. Some people predicted in the 1990s that the only true driver for IPv6 adoption would be the depletion of the IPv4 resource. Many people would agree those assessments were accurate, as today we see increased energy to adopt IPv6 in anticipation of imminent IPv4 depletion.
11 Situation Today, the Internet is predominantly based on IPv4. The Internet must run two IP versions at the same time (IPv4 & IPv6) - this is the “dual-stack” approach.To ensure your web and mail servers are able to communicate with all users, regardless of the protocol version they are using, you must make them available over both IPv4 and IPv6. As the IPv4 free pool is depleted, many service providers will begin adding users to the Internet using IPv6. The already-deployed IPv4 base will remain with us for many years, however. It is important to support both versions of the protocol for many years to come.
12 SituationToday, there are organizations attempting to reach your mail, web, and application servers via IPv6.In the near future there will be many more deployments using IPv6.You likely already have users attempting to reach your mail, web, and other services over the IPv6 network today. Even if those attempts are few today, they will soon be many. As the IPv4 resource depletes, providers will add new users to the Internet using IPv6.
13 Situation What requires contiguous number resources? Building out major new networksISPs adding new customersWhat does this mean for:Enterprise Customers?Internet Service Providers?Equipment Vendors?Content and Hosting Firms?Building new networks and adding new users to the Internet require contiguous number resources. As we move closer to the depletion of the IPv4 resource, there will soon only be contiguous IPv6 resources available for new networks and users. This impacts everyone, but in slightly different ways. It is up to all of us to make this transition to a dual-stacked Internet as transparent as possible to home users. There is a fair amount of work involved to make this happen. It is important it does happen to ensure the smooth operation of the Internet we all enjoy today.
14 Call to Action Enterprise Customers Mail, web, and application servers must be reachable via IPv6 in addition to IPv4.Open a dialogue with your Internet Service Provider about providing IPv6 services.Each organization must decide on timelines, and investment level will vary.Nearly all enterprise organizations rely on the Internet for at least part of their core operations and services. To ensure these services can communicate with everyone on the Internet going forward, your network infrastructure must be dual-stacked. Doing this now will ensure all users will continue to be able to see your website, use your web-based services, and communicate with you via . You may manage these services internally or through a vendor. Either way, speak to those who are responsible for your network operations about adding IPv6 accessibility to them.
15 Call to Action Internet Service Providers Begin planning to connect customers via both IPv4 and IPv6 now.Communicate with your peers and vendors about IPv6.Consider IPv6 when making purchases.In addition to provisioning new customers using IPv6, there is work to be done by Internet Service Providers to ensure their existing IPv4 customers are able to interact with new IPv6-only content on the Internet. ISPs must establish protocol translation and/or tunneling services for their customers. You should be planning this now.
16 Call to Action Equipment Vendors There was probably limited demand for IPv6 in the past.Demand for IPv6 support will become mandatory very, very quickly.Introduce IPv6 support into your product cycle as soon as possible.Equipment vendors who distribute a hardware or software product that interacts with IPv4 networks should be making sure it is also capable of interacting with IPv6. Although customer demand for IPv6 support may have been limited in the past, it will very quickly escalate. To be prepared for customer demand, begin introducing IPv6 support into your product cycle as soon as possible.
17 Call to Action Content Providers Content clients must be reachable to newer Internet customers.Begin planning to connect hosting customers via both IPv4 and IPv6 now.Encourage customers to use IPv6 and test their applications over it as soon as possible.Content providers must begin upgrading their capabilities to include IPv6 access to services for their customers. Demand from customers may be low today, but soon they will begin contacting you to determine why people can’t see their website or send them . It is important to act now and ensure services over both IPv4 and IPv6.
18 Government Actions Awareness Coordinate with industry Adopt incentives RegulatoryEconomicSupport and promote activitiesOfficially adopt IPv6Governments should use this time to promote IPv6 awareness. Coordinating with industry, creating incentives, and promoting IPv6 adoption are all very important and helpful ways for governments to assist with the transition to a dual-stacked Internet. Officially adopting IPv6 and making government services available over both versions of the Internet Protocol sends a very strong message and ensures services remain available to all.
19 IPv6 Adoption Needs IPv6 address space IPv6 connectivity (native or tunneled)Operating systems, software, and network management tool upgradesRouter, firewall, and other hardware upgradesIT staff and customer service trainingOrganizations will need IPv6 address space to dual-stack their services. IPv6 address space is available either directly from an RIR or from an Internet Service Provider. To connect to the IPv6 portions of the Internet, you will need to get connectivity natively from your service provider, or through another organization that provides IPv6 tunneling services. It is important going forward to make IPv6 support a consideration when making any new purchases of network equipment and software. To upgrade your services to support both IPv4 and IPv6 you may need to acquire new equipment or update what you currently have with firmware updates. It is important your IT staff be trained to support IPv6. Many will be able to self-train using already available resources, however formal training is available through training vendors if needed.
20 Resources Information Page at www.arin.net/knowledge/v4-v6.html Social Media at ARINIPv6 WikiCommunity Use Slide DeckARIN Board ResolutionLetter to CEOsARIN hosts a resource center devoted to IPv4 and IPv6 issues. Visit IPv4 / IPv6: The Bottom Line at for information including statistics sheets, this slide deck, the 2007 ARIN Board Resolution on IPv4 depletion, the letter ARIN sent to corporate CEOs advising them of the IPv4 depletion issue, how to find ARIN on social media networks including Facebook, Twitter, and YouTube, and other resources.ARIN’s site is a wiki to facilitate IPv6 adoption discussions. Anyone is welcome to use the wiki. Many people have shared their IPv6 adoption information on the site and there are useful links and other resources available. Please share your adoption experiences by posting to the wiki.In May of 2007 the ARIN Board of Trustees issued a resolution advising the Internet community on IPv6 adoption. The advisory recognizes the imminent depletion of IPv4 resources and advises organizations to adopt IPv6.In April of 2009 the ARIN Board of Trustees directed ARIN staff to send a letter via certified mail to the CEO of every organization currently holding an IPv4 registration in the ARIN region. The purpose of this effort is to raise executive awareness of the depletion of IPv4 resources and to encourage the active adoption of IPv6. The letter also serves as notification that, in response to the approaching depletion of the IPv4 free address pool, the Board has directed ARIN staff to take additional steps to ensure the legitimacy of all IPv4 address space requests. ARIN now requires that all applications for IPv4 address space include an attestation of accuracy from an officer of the organization.
21 Learn More and Get Involved Learn more about IPv6Get Involved in ARINPublic Policy Mailing ListAttend a MeetingYou can become involved in the ARIN processes to ensure your Internet number resource needs are met and the entire community benefits from your important participation. Information is available at the provided links.
22 Thank YouPlease contact with any questions, comments, or suggestions.