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Comcast will begin in April a series of public trials of three different mechanisms that are aimed at helping the Philadelphia-based ISP transition its network to IPv6, the next-generation Internet Protocol.
Comcast announced that it is starting IPv6 production-level network trials on its blog on Wednesday. The carrier has been working on IPv6 development for five years.
IPv6: The essential guide
Comcast is looking towards IPv6 as an enabling technology that will allow the carrier to continue adding new subscribers to its network in the long-term. The largest cable operator in the United States, Comcast had 23.8 million customers for its video, high-speed Internet and voice services as of Sept. 30, 2009.

Comcast is moving toward IPv6 because the Internet is running out of address space using its current protocol, which is known as IPv4. IPv4 uses 32-bit addresses and can support around 4 billion IP addresses. More than 90% of IPv4 addresses have been distributed to ISPs and other network operators.
Designed as an upgrade to IPv4, IPv6 uses a 128-bit addressing scheme and can support so many billions of IP addresses that the number is too big for most non-techies to understand. (IPv6 supports 2 to the 128th power of IP addresses.)
IPv6 has been available since the mid-1990s, but deployment of IPv6 began in earnest last year. Among the U.S. ISPs that are leading the charge to IPv6 are Comcast, Hurricane Electric and NTT America.
Comcast plans to complete its transition to IPv6 in 2012, which is when the last IPv4 addresses are expected to be allocated.
Comcast is recruiting corporate and residential customers to participate in the IPv6 trials, which will run for several months during 2010.
Comcast will use the trials to identify the best way to migrate its access network to IPv6.
"We've done all the upgrades to prepare our backbone, our back office and our peering points to be IPv6 compliant, but what remains is our access network," says Jason Livingood, Executive Director of Internet Systems Engineering at Comcast.
Comcast will test three IPv6 transition mechanisms:
* Phase one will use 6rd, a technique developed by French ISP Free that allows for rapid deployment of IPv6 by tunneling IPv6 traffic over IPv4 addresses.
* Phase two will support native IPv4 and IPv6 traffic running side-by-side in an approach dubbed dual-stack. This is Comcast's preferred method of transition to IPv6 and may require the carrier to reclaim unused blocks of IPv4 addresses.
* Phase three will test a technique developed by Comcast called Dual-Stack Lite, which uses network-address translation to share one IPv4 address among many customers.
"We really want to kick the tires on these various technologies so we can understand what needs to happen for a wide-scale roll out," says John Brzozowski, chief architect for the IPv6 Program at Comcast. "We want to understand what the challenges are and what the various issues are so we can make sure we do what's in the best interests of our subscribers."

ivingood says Comcast wants to use the trials to figure out which IPv6 transition mechanism will work best in a production environment. "Our attitude on this is that the sooner we can begin to really know how to make the transition, the better," Livingood says. "We don't want to wait until the last minute to figure this out because there might be standards development or industry-wide things needed or operational tools to develop. We want to have plenty of time to focus our energy on this transition."
Comcast is providing details about its IPv6 trials and how to sign up for them at the Web sites www.comcast6.net and www.ipv6.comcast.net.
Comcast hopes to attract hundreds -- perhaps thousands -- of its commercial and residential customers to participate in its IPv6 trails.

"We're looking for a wide variety of customers to participate in our IPv6 trials -- some that might be tech savvy and some that might not," Livingood says. "Some of the trials might be geographically bound…but others will not be geographically bound, [and] we'll cherry pick subscribers from all across the network to participate."
Only Comcast customers can participate in the trials, which will be free of charge.
Each of the trials will last three to six months, depending on the problems encountered with the IPv6 transition mechanisms that are being tested.
"Some of the concerns we have are about the ability of home gateway devices to be able to be upgraded for native dual stack IPv4 and IPv6, and legacy applications on computers or scattered hardware throughout the home," Livingood says. "Home networks are very diverse, and there's a lot of complexity in them. So we're worried about some of those things."
Another concern with the trials is how Comcast's IPv6 traffic will traverse the networks of other carriers as it is sent across the Internet.
"We're also watching closely all the operational and routing aspects of getting IPv6 traffic around the Internet," Livingood says. "There will be some learning there."
Comcast wouldn't announce the names of the hardware and software vendors participating in its IPv6 trials, but it did say that the trials would involve open source software from ISC and Dibbler.
Comcast's IPv6 trial was announced a week after the Internet regional registries said that less than 10% of IPv4 addresses were available for allocation to carriers.

Big step for IPv6: Comcast starts trials

bout World IPv6 Day

On 8 June, 2011, Google, Facebook, Yahoo!, Akamai and Limelight Networks will be amongst some of the major organisations that will offer their content over IPv6 for a 24-hour "test flight". The goal of the Test Flight Day is to motivate organizations across the industry – Internet service providers, hardware makers, operating system vendors and web companies – to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out.
Please join us for this test drive and help accelerate the momentum of IPv6 deployment.
How To Take Part

Interested in joining the other organisations that are taking part in this initiative? Select your type of organisation below and you'll find everything you need to participate in World IPv6 Day:

• Website Owners
• Network Operators

Please contact us to indicate your interest in participating in World IPv6 Day and to have your company added to the list of participating organisations.
Test your IPv6 Connectivity

Want to find out your IPv6 readiness? Use this test.
Other IPv6 Day Events

Heise.de held a similar event on 16 September 2010. As a result of their prior tests and experiences they now operate dual stack IPv6 and IPv4 on their website. You can read about their experiences in the following links:

• Heise.de (German version)
• Heise.de (English version)

On Oct 26, 2010, two of the top-5 websites in Norway, A-pressen Digitale Medier and VG Multimedia, both made their websites available over IPv6 for 24 hours. Thanks to the positive results that day, the change was made permanent shortly after.

• A-pressen Digitale Medier (Norwegian version)
• A-pressen Digitale Medier (Norwegian version)
• VG Multimedia (Norwegian version)

Internet Society - World IPv6 Day

List of Participants

The following organisations are joining the Internet Society in actively participating in World IPv6 Day.
This page lists companies who have made public commitments to participate in this event and links to any material they may be offering to accompany their participation. Check back here for updates with additional details on participants in this event.
On June 8 the websites listed here will offer their content over IPv6. We will display a status dashboard indicating the IPv6 status.
Please contact us to indicate your interest in participating in World IPv6 Day and to have your company added to the list below.

• Google (www.google.com; www.youtube.com)
• Facebook (www.facebook.com)
• Yahoo! (www.yahoo.com)
• Akamai (www.akamai.com)
• Limelight Networks

Participating websites

See below for other participating organisations
Show entries
Search:
Join Order Participants IPv6 Page Participating Websites 0 Google www.google.com
www.youtube.com 0 Facebook www.facebook.com 0 Yahoo!
www.yahoo.com 0 Akamai www.akamai.com 1 Cisco www.cisco.com 2 Meebo www.meebo.com 3 Genius
www.genius.com 4 W3C
www.w3.org 5 Universidad Nacional Autonoma de Mexico
www.unam.mx 6 Rensselaer Polytechnic Institute www.rpi.edu 7 NYI NET
www.nyi.net 8 Host Europe
www.hosteurope.de 9 Xiphiastec
www.xiphiastec.com 10 Tom's Hardware
www.tomshardware.com 11 NUST School of Electrical Engineering and Computer Science
www.seecs.edu.pk 12 Twenga
www.twenga.com 13 Plurk www.plurk.com 14 Terra (Brazil) www.terra.com.br 15 Jolokia Networks jolokianetworks.com 16 Juniper Networks www.juniper.net 17 Microsoft Bing www.bing.com 18 Gigatux www.gigatux.com 19 Voxel
www.voxel.net 20 LemonEntry www.lemonentry.eu 21 2g2u
www.2g2u.net 22 2020Media www.2020media.com 23 Vonage
www.vonage.com 24 sapo.pt
www.sapo.pt 25 Tagadab.com
www.tagadab.com 26 Mercury Z
www.mercuryz.com 27 Outpost10f
outpost10f.com 28 Public Interest Registry
www.pir.org 29 Sesame Workshop
www.sesameworkshop.org 30 Arces
www.arces.net 31 KTS Australia Pty Ltd
www.ktsaustralia.com.au 32 NIC Mexico
www.nic.mx 33 BlueCat Networks www.bluecatnetworks.com 34 Nolet5
www.nolet5.nl 35 Mozilla www.mozilla.com 36 Universidad APEC
www.unapec.edu.do 37 Lex Media www.lexmedia.ro 38 Astaro com
www.astaro.com 39 Astaro de
www.astaro.de 40 Astaro org
www.astaro.org 41 Hurricane Labs www.hurricanelabs.com 42 US Department of Veterans Affairs
www.va.gov 43 Rosslyn Analytics
www.rosslynanalytics.com 44 Appalachian Wireless www.appalachianwireless.com 45 OfficeScape
www.officescape.com 46 Sliqua Enterprise Hosting
www.sliqua.com 47 Exact Abacus
www.exactabacus.com 48 WeatherCity Services
www.weathercity.com 49 LCN www.lcn.com 50 Server Choice www.serverchoice.com 51 ISOMEDIA
www.isomedia.com
www.highlandsfibernetwork.com 52 Fortinet
www.fortinet.com 53 Harvard University
www.harvard.edu 54 Command Channel
commandchannel.com 55 Biglobe
www.biglobe.ne.jp 56 YellowBot
www.yellowbot.com 57 Urban Dictionary
www.urbandictionary.com 58 Daily Kos
www.dailykos.com 59 Comcast
www.comcast.com 60 Netcetera
www.netcetera.co.uk 61 Games at Miniclip.com - Play Free Online Games
www.miniclip.com 62 Midland Computers
www.midlandcomputers.com 63 Internet2 www.internet2.edu 64 CANARIE Inc.
www.canarie.ca 65 Gustavus Adolphus College
gustavus.edu 66 Laurentian University
www.laurentian.ca 67 Huawei
www.huawei.com 68 Interop Tokyo 2011
www.interop.jp 69 Seznam.cz
www.mapy.cz
www.novinky.cz
www.super.cz
www.firmy.cz 70 Shazzle, LLC
www.shazzlemail.com 71 Bangzoom Software Inc
www.bangzoom.com

www.collectorvalueguides.com 72 Telkom Indonesia
www.telkom.co.id
www.plasa.com
www.telkomspeedy.com 73 HTTrack www.httrack.com 74 LUNS Ltd. www.luns.net.uk 75 A10 Networks
A10 Networks - Application Delivery and Server Load Balancing 76 Radius Gateway
www.radiusgateway.com 77 DynamicInternet.com dyni.net 78 mihostcgi
www.mihostcgi.com 79 Verisign www.verisigninc.com 80 American Domain Names
www.unclesamnames.com 81 Devoteam Genesis
www.devoteam.ch 82 Campus Party
www.campus-party.org
www.campus-party.com.co
www.campus-party.com.br
www.campus-party.es 83 OpenDNS
opendns.com 84 NTT Communications Group
www.us.ntt.net
www.ocn.ne.jp 85 ICT Standards Advisory Council of Canada
www.isacc.ca www.cccnt.ca 86 Akanthe Solutions
www.wikisail.fr
www.wikisail.org
www.wikisail.com
www.akanthe.com
www.akanthemarine.com
www.akanthesolutions.com 87 Tellabs
www.tellabs.com 88 Mutali
www.mutali.rw 89 TheHavenNet
www.thehavennet.org.uk 90 TownNews townnews.com 91 IP-Only Telecommunication Network AB
www.ip-only.net
www.ip-only.com
www.ip-only.se 92 netPR.pl sp. z o.o.
www.netpr.pl 93 Technodyne
www.technodyne.com 94 HostingXS BV www.hostingxs.nl 95 IG
www.ig.com.br 96 Infoblox
www.infoblox.com Showing 1 to 100 of 287 entries

Other participating organisations

Many networks and hosting companies are enabling others to get online using IPv6. Networks are deploying IPv6 and enabling end users to use IPv6. Hosting companies are enabling websites to deliver their content over IPv6. The companies below are all participating in World IPv6 Day:

• Comcast
• Time Warner Cable
• Rackspace
• Softlayer
• Voxel
• Steadfast Networks
• Dynamic Internet
• Host.md
• Frobbit!
• OLM.net
• NFSI Telecom
• Conexim Australia Pty. Limited
• Fastserv
• NYINET
• it-in
• Trunk Networks
• domainfactory GmbH

Internet Society - World IPv6 Day List of Participants

Internet Society and World IPv6 Day Preparedness

The Internet Society is happy to help coordinate activities surrounding World IPv6 Day. Our website has been IPv6 enabled since September 2006 and on a native IPv6 link since September 2009.
The Internet Society has a number of Chapters around the world who are working with local industry segments to facilitate additional participation in World IPv6 Day. On this page we will provide links to those chapters who have specific activities for World IPv6 Day.
Australia
The Australian chapter of the Internet Society is organizing World IPv6 Day activities in Australia. You can find that info here.
Hong Kong
The Internet Society Hong Kong chapter has organized a World IPv6 Day kickoff event in Hong Kong. You can find information about that here.
The Netherlands
The Netherlands Internet Society Chapter is helping to organize an event to discuss and promote IPv6 and to celebrate World IPv6 Day. You can find information about that here.
Internet Society - World IPv6 Day Internet Society and World IPv6 Day Preparedness

Major Websites Commit to 24-Hour Test Flight for IPv6

"World IPv6 Day" to take place on June 8, 2011
GENEVA, SWITZERLAND and RESTON, VIRGINIA, USA– 12 January 2011 – Facebook, Google (NASDAQ: GOOG) and Yahoo (NASDAQ:YHOO), websites with more than one billion combined visits each day, are joining major content delivery networks Akamai (NASDAQ: AKAM) and Limelight Networks (NASDAQ: LLNW), and the Internet Society, for the first global-scale trial of the new Internet Protocol, IPv6. On June 8, 2011, dubbed "World IPv6 Day," participants will enable IPv6 on their main services for 24 hours. With IPv4 addresses running out this year, the industry must act quickly to accelerate full IPv6 adoption or risk increased costs and limited functionality online for Internet users everywhere. The companies are coming together to help motivate organizations across the industry—Internet service providers, hardware manufacturers, operating system vendors and other web companies—to prepare their services for the transition.
The Internet Society is supporting World IPv6 Day as part of its efforts to accelerate IPv6 deployment. "2011 is a pivotal year in IPv6 deployment, and World IPv6 Day will prove to be an important milestone," commented Leslie Daigle, the Internet Society's Chief Internet Technology officer. "By providing an opportunity for the Internet industry to collaborate to test IPv6 readiness we expect to lay the groundwork for large-scale IPv6 adoption and help make IPv6 ready for prime time. The greater the scope of the trial, the more effective it will be for all participants so we wholeheartedly welcome additional participants."
IPv6, the successor to the protocol currently used on the Internet, was designed in the late 1990s but has not seen deployment on a global scale. With IPv4 address space running out, the industry cannot afford to wait much longer.
Vint Cerf, Google's Chief Internet Evangelist and co-inventor of the TCP/IP protocol stack, commented, "In the short history of the Internet, the transition to IPv6 is one of the most important steps we will take together to protect the Internet as we know it. It's as if the Internet was originally designed with a limited number of telephone numbers, and we're soon going to run out." Google has offered a separate IPv6-only version of search on ipv6.google.com since early 2008, and during World IPv6 Day the company will enable IPv6 for its main websites, including www.google.com and www.youtube.com.
Given the diversity of technology that powers the Internet, the global nature of the trial is crucial to identify unforeseen problems. "Participating in World IPv6 Day will allow us to obtain real-life data that we can use to ensure a seamless user experience as we transition to IPv6," said Adam Bechtel, Vice President for Yahoo's Infrastructure Group. "We welcome this opportunity to collaborate with the technical community and provide leadership in addressing the scaling challenges facing the Internet."
World IPv6 Day marks a key milestone in enabling more and more computers and smart phones to come online. As more of the world moves online, IPv6 will be critical for the Internet to reach its full potential as a catalyst for growth, innovation and economic prosperity. IPv6 provides over four billion times more addresses than IPv4, which will help connect the billions of people not connected today.
Facebook views the rollout of IPv6 as a critically important step to keep the world connected. "As an industry, we're working together to ensure future generations continue to have open and direct access to the Internet as we do today," said Jonathan Heiliger, Vice President of Technical Operations at Facebook. "The number of web-connected devices is exploding, and World IPv6 Day is a crucial step in ensuring they can all communicate."
Akamai Technologies, Inc. (NASDAQ: AKAM), a leading provider of cloud optimization services, will enable customers to participate in World IPv6 Day. "IPv6 adoption is still in its infancy," said Harald Prokop, Senior Vice President of Engineering at Akamai. "We stand ready to support customers through this important trial, and believe that early planning and testing will ensure a smooth transition to IPv6." To support the transition to IPv6, Akamai customers will be able to seamlessly make their existing websites available via IPv6 without requiring disruptive changes to their origin networking infrastructure.
Tom Coffeen, Director of Global Network Architecture for Limelight Networks, said, "As part of our ongoing commitment to IPv6, Limelight Networks today is actively delivering customer content over the world's first fully IPv6-compliant content delivery service. We are pleased to participate in World IPv6 Day to encourage the adoption of IPv6 across the Internet and to transform address resource challenges into innovation and competitive advantage for our customers."
One of the goals of World IPv6 Day is to expose potential issues under controlled conditions and address them as soon as possible. The vast majority of users should be able to access services as usual, but in rare cases, misconfigured or misbehaving network equipment, particularly in home networks, may impair access to participating websites during the trial. Current estimates are that 0.05% of users may experience such problems, but participating organizations will be working together with operating system manufacturers, home router vendors and ISPs to minimize the number of users affected. Participants will also be working together to provide tools to detect problems and offer suggested fixes in advance of the trial.
For more information about World IPv6 Day, how to get involved, and links to useful information for users, visit www.internetsociety.org/worldipv6day.
About the need for IPv6
IPv4 has approximately four billion IP addresses (the sequence of numbers assigned to each Internet-connected device). The explosion in the number of people, devices and web services on the Internet means that IPv4 is running out of space. IPv6, the next-generation Internet protocol, which provides over four billion times more space, will connect the billions of people not connected today and will help ensure the Internet can continue its current growth rate.
About the Internet Society
The Internet Society is a non-profit organisation founded in 1992 to provide leadership in Internet-related standards, education and policy. It is dedicated to ensuring the open development, evolution and use of the Internet for the benefit of people throughout the world. See www.internetsociety.org
ISOC Monthly Newsletter - Major Websites Commit to 24-Hour Test Flight for IPv6