<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Hi Matteo,<br></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br>As far as I know all of underlying connections are established on udp tunnels. You are registering a prefix on a faceUri, which is on a udp tunnel. But nfd cares about prefixes(names) and faces, and what the underlying of the face is, is out of scope of nfd.<br><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Thanks,<br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Sabet<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 21, 2016 at 3:59 PM, Matteo Bertolino <span dir="ltr"><<a href="mailto:Matteo.Bertolino@eurecom.fr" target="_blank">Matteo.Bertolino@eurecom.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Christos,<br>
thank you for your answer. Yes I expressed bad myself, however the point of my question was your sentece:<span class=""><br>
<br>
"In many cases the face will use an IP tunnel to get to the next hop."<br>
<br></span>
I would like to deepen this point actually. Precisely, how? Is it a TCP tunnel, an UDP tunnel, do you know where I can check how this tunnel is created?<br>
<br>
Thank you very much.<br>
Yours,<br>
Matteo<div class="HOEnZb"><div class="h5"><br>
<br>
<br>
Quoting Christos Papadopoulos <<a href="mailto:christos@colostate.edu" target="_blank">christos@colostate.edu</a>>:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Matteo,<br>
<br>
Are you connected to the NDN testbed through a node local to you? If<br>
yes, you would send an interest to your local NDN node, and that node<br>
will in turn route your interest to the closest node that advertises<br>
the content you are looking for.<br>
<br>
Remember that with NDN you no longer communicate with other nodes<br>
(unless they are named explicitly), you request content. Your Interest<br>
will be directed to the closest provider of the content, which may be<br>
your local node, if the content was cached there.<br>
<br>
Now assuming that you requested content that is currently only<br>
available through a publisher in the US, then your local node will<br>
select a face to forward the Interest based on what NLSR (the NDN<br>
routing protocol) specifies. In many cases the face will use an IP<br>
tunnel to get to the next hop. Eventually your Interest will reach the<br>
US publisher through a series of hops determined by the routing<br>
protocol.<br>
<br>
Not sure if this helps you, but I wanted to point out that in NDN the<br>
term "I want to communicate with a node in the US" is not meaningful.<br>
<br>
Christos.<br>
<br>
<br>
<br>
On 10/21/2016 05:21 AM, Matteo Bertolino wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Good morning community,<br>
I am wondering whether a little literature about the Testbed architecture is available.<br>
<br>
I search something that probably is not included in the category "Testbed" on the official site.<br>
<br>
I mean, suppose that I am in Italy and I would like to communicate with a node in US. I send an Interest, then I suppose that the request is encapsulated in an IP request in order to arrive to destination.<br>
Is it correct? Can I know more about the practical steps?<br>
<br>
Bests, Matteo<br>
<br>
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