[Ndn-interest] Testbed architecture

[Muhammad Hosain Abdollahi Sabet]

Hi Matteo,

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.

Thanks,
Sabet

On Fri, Oct 21, 2016 at 3:59 PM, Matteo Bertolino <
Matteo.Bertolino at eurecom.fr> wrote:

> Dear Christos,
> thank you for your answer. Yes I expressed bad myself, however the point
> of my question was your sentece:
>
> "In many cases the face will use an IP tunnel to get to the next hop."
>
> 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?
>
> Thank you very much.
> Yours,
> Matteo
>
>
>
> Quoting Christos Papadopoulos <christos at colostate.edu>:
>
> Matteo,
>>
>> Are you connected to the NDN testbed through a node local to you? If
>> yes, you would send an interest to your local NDN node, and that node
>> will in turn route your interest to the closest node that advertises
>> the content you are looking for.
>>
>> Remember that with NDN you no longer communicate with other nodes
>> (unless they are named explicitly), you request content. Your Interest
>> will be directed to the closest provider of the content, which may be
>> your local node, if the content was cached there.
>>
>> Now assuming that you requested content that is currently only
>> available through a publisher in the US, then your local node will
>> select a face to forward the Interest based on what NLSR (the NDN
>> routing protocol) specifies. In many cases the face will use an IP
>> tunnel to get to the next hop. Eventually your Interest will reach the
>> US publisher through a series of hops determined by the routing
>> protocol.
>>
>> Not sure if this helps you, but I wanted to point out that in NDN the
>> term "I want to communicate with a node in the US" is not meaningful.
>>
>> Christos.
>>
>>
>>
>> On 10/21/2016 05:21 AM, Matteo Bertolino wrote:
>>
>>> Good morning community,
>>> I am wondering whether a little literature about the Testbed
>>> architecture is available.
>>>
>>> I search something that probably is not included in the category
>>> "Testbed" on the official site.
>>>
>>> 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.
>>> Is it correct? Can I know more about the practical steps?
>>>
>>> Bests, Matteo
>>>
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