<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">CCNx is still being worked on actively in the ICN Research Group in the IRTF and there are multiple implementations available. There is progressing work on Manifests and extensions to support distributed computing. The specifications being andvanced are intended to support both the CCNx and NDN protocols, though engagement on the technical work from the NDN research teams has been minimal in recent times.<div><br></div><div>Others may have different views, but for me the fundamental barrier that prevented convergence of the two protocols (which are extremely similar other than packet encoding) was that the IRTF and IETF rules require that change control reside with the IRTF. The NDN community was not willing to take that step.<br id="lineBreakAtBeginningOfSignature"><div dir="ltr"><div>___________________________</div>iDevice - please excuse typos.</div><div dir="ltr"><br><blockquote type="cite">On Apr 25, 2025, at 4:17 PM, Kyra <hello@kyra.run> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>When reading that NDN was based on CCNx, I didn't realize that meant that NDN is based on Xerox PARC's CCNx 0.x code, but this was <a href="http://www.lists.cs.ucla.edu/pipermail/ndn-interest/2017-March/001596.html">acquired by Cisco</a> and version 1.x is an ongoing project through the IRTF's Information Centric Networking Research Group (<a href="https://mailarchive.ietf.org/arch/msg/icnrg/oQYP7UhvVzuOmCAkwv6SmvNSYOw/">ICNRG</a>): <a href="https://www.irtf.org/icnrg.html">https://www.irtf.org/icnrg.html</a></div><div><br></div><div></div><div>There was even an effort around 2016 to work together to:</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Understand and document current differences [n]ot only syntax and mechanisms – also semantics and motivation for design decisions</blockquote></div><div>and resolve those to produce a <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">set of (Experimental) RFCs that represent community consensus on one combined NDN/CCNx design</blockquote><div dir="ltr"><ul><li><a href="https://www.ietf.org/proceedings/96/slides/slides-96-icnrg-7.pdf">https://www.ietf.org/proceedings/96/slides/slides-96-icnrg-7.pdf</a></li></ul></div><div dir="ltr"><br></div><div>It looks like the convergence wiki page has been purged, and there was a protocol harmonization document drafted, but otherwise the meeting records stopped 8 years ago</div><div><ul><li><a href="https://web.archive.org/web/20220607064227/https://trac.ietf.org/trac/irtf/wiki/icnrg/convergence">https://web.archive.org/web/20220607064227/https://trac.ietf.org/trac/irtf/wiki/icnrg/convergence</a></li><li><a href="https://icnrg.github.io/draft-icnrg-harmonization/draft-icnrg-harmonization-00.html">https://icnrg.github.io/draft-icnrg-harmonization/draft-icnrg-harmonization-00.html</a></li><li><a href="https://github.com/icnrg/convergence/tree/master/meetings">https://github.com/icnrg/convergence/tree/master/meetings</a></li></ul></div><div>How far did those efforts go and if they have concluded, what was the impasse? In my last reply to the 'Understanding Named Data Networking' thread, I should've added this as another worthwhile comparison to publish!</div><div dir="ltr"></div><div dir="ltr"><br></div><div>I was hoping to see the recording of the conference where some of this was discussed, but the <a href="https://named-data.net/2017/04/04/named-data-networking-ndn-project-newsletter-februarymarch-2017/">recording links</a> (below) are dead and even the Internet Archive's <a href="https://web.archive.org/web/20181111152459/https://www.caida.org/workshops/ndn/1703/">Wayback Machine snapshot</a> from the same year also shows dead links. <br><br></div><div>P.S. When will the recordings of this year's NDN Community meeting go online? I had to work so I wasn't able to pay close attention but wanted to see the videos when they are available!</div><div id="lark-mail-quote-d50a88bc00e923bb322fa5e4dd7b337f"><div dir="ltr"><br></div><div dir="ltr">On Thu, Mar 23, 2017 at 8:37 AM Lan Wang <<a href="mailto:lanwang@memphis.edu">lanwang@memphis.edu</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi all,</blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> </blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Here’re the NDNcomm (NDN Community Meeting) 2017 live streams for today and tomorrow (starting at 8:30am central):<br><br>3/23: <a href="http://mediasite.memphis.edu/Mediasite/Play/b946b7085dea4573aba78d0425bd5fd91d">http://mediasite.memphis.edu/Mediasite/Play/b946b7085dea4573aba78d0425bd5fd91d</a><br><br>3/24: <a href="http://mediasite.memphis.edu/Mediasite/Play/cd3596a0b235492cbc049754b8f037d71d">http://mediasite.memphis.edu/Mediasite/Play/cd3596a0b235492cbc049754b8f037d71d</a><br> <br>Thanks,<br><br>Lan<br><br>************************************************<br>Lan Wang<br>Professor & Chair<br>Department of Computer Science<br>University of Memphis<br>Memphis, TN 38152<br><br>Phone: 901-678-1643<br>URL: <a href="http://www.cs.memphis.edu/~lanwang">http://www.cs.memphis.edu/~lanwang</a><br>***********************************************</blockquote></div></div></div><span>_______________________________________________</span><br><span>Ndn-interest mailing list</span><br><span>Ndn-interest@lists.cs.ucla.edu</span><br><span>https://www.lists.cs.ucla.edu/mailman/listinfo/ndn-interest</span><br></div></blockquote></div></body></html>