[ndnSIM] Error When Adding Routes Using FibHelper

[Samar Alduayji]

Dear All,



I'm using the ndn::FibHelper::AddRoute function to add routes to newly
connected p2p nodes. My code is something like this



NodeContainer nodes;

nodes. Create(4);

NodeContainer producer;

producer.Create(1);



PointToPointHelper p2p;

  p2p.Install(nodes.Get(0), nodes.Get(1));

  p2p.Install(nodes.Get(1), nodes.Get(2));

  p2p.Install(nodes.Get(2), nodes.Get(3));

  p2p.Install(nodes.Get(0), nodes.Get(2));



 ndn::StackHelper ndnHelper;

 ndnHelper.SetDefaultRoutes(true);

 ndnHelper.InstallAll();

….

…

….

// Add prefix origins to ndn::GlobalRouter

  ndnGlobalRoutingHelper.AddOrigins(prefix, producer.Get(0));



  p2p.Install(nodes.Get(0), producer.Get(0)); // link one node to the
producer



  // Calculate and install FIBs

  ndn::GlobalRoutingHelper::CalculateRoutes();



\\ link other nodes to the producer



for ( int i=1; i<nodes.size(); i++)

{

p2p.Install(nodes.Get(i), producer.Get(0));

ndn::FibHelper::AddRoute(nodes.Get(i), prefix, producer.Get(0),1);

}





When I run the scenario, it crashes on the FibHelper line, and I got the
following message

*“There is no face associated with the p2p link"*

Can you please help me finding the reason of this message? The p2p should
create the face directly when the link is established, so why I got such a
message?



Your help is really appreciated

Regards,

Samar
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