Content-Centric Network (CCN) in ns-3 are proceeded by ndnSIM module, which covers the ns-3 to support Named data Networking (NDN) mainly in implementation of CCN. Here are the procedures and a thorough example to support setup a CCN simulation in ns-3 environment using the ndnSIM..We work on all types of CCN simulation.
Step-by-Step Guide to Implement Content-Centric Network (CCN) in ns-3
- Set Up Your Development Environment
- Install ns-3: Follow the official ns-3 installation guide.
- Install ndnSIM: Follow the ndnSIM installation guide.
- Create a Basic CCN Simulation Script
Below is the samples script to set up a CCN environment using the ndnSIM.
#include “ns3/core-module.h”
#include “ns3/network-module.h”
#include “ns3/internet-module.h”
#include “ns3/point-to-point-module.h”
#include “ns3/ndnSIM-module.h”
using namespace ns3;
using namespace ndn;
int main(int argc, char* argv[]) {
// Setting default parameters for PointToPoint links and CBR traffic
Config::SetDefault(“ns3::PointToPointNetDevice::DataRate”, StringValue(“1Mbps”));
Config::SetDefault(“ns3::PointToPointChannel::Delay”, StringValue(“10ms”));
Config::SetDefault(“ns3::DropTailQueue::MaxPackets”, StringValue(“20”));
// Read optional command-line parameters (e.g., enable visualizer with ./waf –run=<> –visualize
CommandLine cmd;
cmd.Parse(argc, argv);
// Creating nodes
NodeContainer nodes;
nodes.Create(3);
// Connecting nodes using two links
PointToPointHelper p2p;
p2p.Install(nodes.Get(0), nodes.Get(1));
p2p.Install(nodes.Get(1), nodes.Get(2));
// Install NDN stack on all nodes
ndn::StackHelper ndnHelper;
ndnHelper.InstallAll();
// Installing applications
// Consumer
ndn::AppHelper consumerHelper(“ns3::ndn::ConsumerCbr”);
consumerHelper.SetPrefix(“/prefix”);
consumerHelper.SetAttribute(“Frequency”, StringValue(“10”)); // 10 interests per second
consumerHelper.Install(nodes.Get(0)); // first node
// Producer
ndn::AppHelper producerHelper(“ns3::ndn::Producer”);
producerHelper.SetPrefix(“/prefix”);
producerHelper.SetAttribute(“PayloadSize”, StringValue(“1024”));
producerHelper.Install(nodes.Get(2)); // last node
// Add /prefix origins to ndn::GlobalRouter
ndn::GlobalRoutingHelper ndnGlobalRoutingHelper;
ndnGlobalRoutingHelper.InstallAll();
ndnGlobalRoutingHelper.AddOrigins(“/prefix”, nodes.Get(2));
// Calculate and install FIBs
ndn::GlobalRoutingHelper::CalculateRoutes();
// Running simulation
Simulator::Stop(Seconds(20.0));
Simulator::Run();
Simulator::Destroy();
return 0;
}
Explanation of the Script
Here is the explanation for the Ad Hoc network process script
- Include Necessary Headers:
- #include “ns3/core-module.h”
- #include “ns3/network-module.h”
- #include “ns3/internet-module.h”
- #include “ns3/point-to-point-module.h”
- #include “ns3/ndnSIM-module.h”
- Set Up Default Configuration:
- Configure point-to-point link parameters such as data rate and delay.
- Create and Connect Nodes:
- Create three nodes using NodeContainer.
- Use PointToPointHelper to connect these nodes.
- Install NDN Stack:
- Use ndn::StackHelper to install the NDN stack on all nodes.
- Install Applications:
- Install a consumer application on the first node using ndn::AppHelper.
- Set the consumer to request content with a specified prefix (/prefix) at a frequency of 10 interests per second.
- Install a producer application on the last node, set to respond to requests for the same prefix (/prefix).
- Set Up Routing:
- Use ndn::GlobalRoutingHelper to add routing information.
- Add origins for the content prefix to the producer node.
- Calculate and install the forwarding information base (FIB) entries.
- Run the Simulation:
- Set the simulation stop time using Simulator::Stop.
- Run the simulation with Simulator::Run.
- Clean up with Simulator::Destroy.
Further Enhancements
Here we provide the future improvements for content centric network
- Content Caching:
- Implement caching strategies on intermediate nodes to cache content and reduce retrieval times.
- Multiple Consumers and Producers:
- Extend the network to include multiple consumers and producers with various content prefixes.
- Dynamic Routing:
- Implement dynamic routing protocols and strategies for content retrieval.
- Performance Analysis:
- Collect and analyze performance metrics such as content retrieval time, cache hit/miss ratio, and network load.
- Advanced Topologies:
- Experiment with more complex network topologies and varying link parameters.
Finally, here we discussed about how to implement and process the content centric network in ns-3 environment and also we see the future improvements clearly. We also provide support for all kinds of network project .