[ndnSIM] Code not working correctly when importing a real topology

[Spyridon (Spyros) Mastorakis]

Hi,

assuming that FIBs have indeed been properly configured, have you verified that the nodes that are supposed to receive Interests also register their prefix locally?

https://github.com/named-data-ndnSIM/ndnSIM/blob/master/apps/ndn-producer.cpp#L82

Thanks,

Spyridon (Spyros) Mastorakis
Personal Website: http://cs.ucla.edu/~mastorakis/ <http://cs.ucla.edu/~mastorakis/>
Internet Research Laboratory
Computer Science Department
UCLA

> On Apr 11, 2019, at 1:17 PM, Ioanna Kapetanidou <ikapetan at ee.duth.gr> wrote:
> 
> Hi,
> I’m currently working on creating a simple trust mechanism in ndnSIM. In order to achieve this,I have created a consumer and a producer application, based on provided codes of costum-app and hijacker applications. I have used a tree topology in which I have installed the consumer application on 10 leaves, the producer application on other 10 leaves and an extra application on root. The functionality of my mechanism is the above:
> Consumers send interests for data packets
> Producers reply with data packets
> Consumers rate the received data packets
> Root periodically sends interests to consumers serially requesting average rating per producer
> Consumers reply with data packets providing the average rating per producer and number of ratings they used
> Root based on data collected computes the reputation of each producer
> Two extra consumers send interests periodically requesting the reputation of a randomly selected producer
>  
> My code works as expected with the tree topology. Then I tried to import GEANT topology and implement my mechanism there. I selected the nodes with the 1 or 2 neighbors to install consumers and producers, as it is on a tree topology. This time, although  FIB tables seem to be filled correctly, when sending an interest it gets rejected and returns a nack with “no route” reason. 
>  
> Do you have any possible explanation for that, or a suggestion for what I should check?
>  
> Thanks in advance,
> Ioanna

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