[Ndn-interest] Testbed architecture

Christos Papadopoulos christos at colostate.edu
Fri Oct 21 05:18:22 PDT 2016


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.


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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