<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hi boubakr,</div><div class=""><br class=""></div>As Lixia clarified, NDN is an network layer that can us TCP or UDP or other protocols to establish tunnels between two nodes. <div class="">It’s noteworthy that NDN can use them but does not rely on them essentially from the view of architecture.</div><div class=""><br class=""></div><div class="">Actually, we already can make two physically connected nodes communicate with each other via Interest / Data without TCP/IP/Ethernet headers on Linux, bypassing the kernel stack completely. <br class=""><div class="">This work is at a very early stage now, but does demonstrate NDN’s ability of networking nodes as a pure network layer.</div><div class=""><br class=""></div><div class="">best,</div><div class=""><br class=""></div><div class="">Yanbiao</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 10 May 2017, at 13:10, Lixia Zhang <<a href="mailto:lixia@CS.UCLA.EDU" class="">lixia@CS.UCLA.EDU</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Now I feel I got a better understanding of your question (or where the confusion came in)<div class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">On May 9, 2017, at 9:57 PM, <<a href="mailto:n.boubakr@bit.edu.cn" class="">n.boubakr@bit.edu.cn</a>> <<a href="mailto:n.boubakr@bit.edu.cn" class="">n.boubakr@bit.edu.cn</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; font-family: Courier; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="FR" class="">Thank you for your answer,<o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="FR" class=""><o:p class=""> </o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">In case of NDN is deployed on top of TCP/UDP/IP, we can treat NDN as an application</div></div></div></blockquote><div class=""><br class=""></div>No.</div><div class="">when talking about an NDN network, one needs to look at the world from NDN viewpoint: NDN is the network layer.</div><div class="">When TCP/UDP/IP tunnels are used to interconnect NDN nodes, they play the same role as physical links, as far as NDN is concerned.</div><div class=""><br class=""><blockquote type="cite" class=""><div class=""><div class="WordSection1" style="page: WordSection1; font-family: Courier; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> and not all a whole architecture (just to clarify my point), and all the process are based on IP process across different layers, which means there is a IP-MAC resolution to for hop to hop transmission.</div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Well, what if NDN is deployed on top of L2 directly, which means NDN replaces totally IP layer. Does the concept remains the same, I saw the specification of NDNLP paper, but I still have many ambiguities in this context.</div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(225, 225, 225); padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; border: none; padding: 0in;" class=""><b class="">From:<span class="Apple-converted-space"> </span></b><a href="mailto:lixia@cs.ucla.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">Lixia Zhang</a><br class=""><b class="">Sent:<span class="Apple-converted-space"> </span></b>Wednesday, May 10, 2017 11:49 AM<br class=""><b class="">To:<span class="Apple-converted-space"> </span></b><a href="mailto:n.boubakr@bit.edu.cn" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">n.boubakr@bit.edu.cn</a><br class=""><b class="">Subject:<span class="Apple-converted-space"> </span></b>Re: [Ndn-interest] NDN-Data Link Layer</div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On May 9, 2017, at 7:30 PM, <<a href="mailto:n.boubakr@bit.edu.cn" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">n.boubakr@bit.edu.cn</a>> <<a href="mailto:n.boubakr@bit.edu.cn" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">n.boubakr@bit.edu.cn</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="FR" class="">Dear all,</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="FR" class="">I have some miss-understanding on how NDN deals with Data Link layer protocol.</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="FR" class="">In case deploying NDN on top of IP protocol, does the MAC layer still need a resolution of IP-MAC address to ensure hop to hop communication over ethernet, what if the 6LoWPAN protocol is used?</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span lang="FR" class="">How NDN deals with Data Link layer in the case of pure NDN deployment?</span><o:p class=""></o:p></div></div></div></blockquote><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">how IP deals with data link layer in case of IP deployment?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">IP uses link layer to carry IP packets<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">similarly, NDN can use data link layer to carry NDN packets, either Interest packet or data packets.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I'm not sure this answers your question, as I did not figure out what is the exact question you have in mind<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""><br class=""><o:p class=""></o:p></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class=""><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Best regards,<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Boubakr Nour (Ph.D Candidate)<br class="">Beijing Institute of Technology (<span lang="ZH-CN" style="font-family: DengXian;" class="">北京理工大学</span>)<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 10pt; font-family: Courier;" class="">_______________________________________________<br class="">Ndn-interest mailing list<br class=""></span><a href="mailto:Ndn-interest@lists.cs.ucla.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-size: 10pt; font-family: Courier;" class="">Ndn-interest@lists.cs.ucla.edu</span></a><span style="font-size: 10pt; font-family: Courier;" class=""><br class=""></span><a href="http://www.lists.cs.ucla.edu/mailman/listinfo/ndn-interest" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="font-size: 10pt; font-family: Courier;" class="">http://www.lists.cs.ucla.edu/mailman/listinfo/ndn-interest</span></a></div></div></blockquote></div></div></div></blockquote></div><br class=""></div></div>_______________________________________________<br class="">Ndn-interest mailing list<br class=""><a href="mailto:Ndn-interest@lists.cs.ucla.edu" class="">Ndn-interest@lists.cs.ucla.edu</a><br class="">http://www.lists.cs.ucla.edu/mailman/listinfo/ndn-interest<br class=""></div></blockquote></div><br class=""></div></div></body></html>