Software Defined Networking in NS2

Implementing Software Defined Networking using NS2 simulator

What is Software Defined Networking?Reason to Implement software Defined Networking using NS2 simulator?

Software-Defined Networking (SDN) is an emerging architecture that is dynamic, manageable, cost-effective, and adaptable, making it ideal for the high-bandwidth, dynamic nature of today’s applications.We provide best Topics and Ns2 code for implementing Software defined networking projects. SDN architecture decouples the network control and forwarding functions enabling the network control to become directly programmable and the underlying infrastructure to be abstracted for applications and network services.we have successfully delivered more than 100+ software defined networking projects in ns2 for students.

Architecture-of-SDN

Features of SDN:

  • It’s an open standards-based and vendor neutral.
  • Pro-grammatically configured.
  • Directly programmable.
  • Centrally managed .
  • Agile.

Types of tiers in SDN architecture:

  • Application tier.
  • Control plane tier.
  • Infrastructure or Data-plane tier.

Benefits of SDN:

  • Deliver agility and flexibility.
  • Reduce capEx.
  • Enable innovation.
  • Reduce OpEx.

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Sample code for software defined Networking in NS2

This is the code for supporting dynamic movement, replication and allocation of virtual resources
SDN::SDN(nsaddr_t id) : Agent(PT_SDN),btimer(this), htimer(this), ntimer(this),   rtimer(this), lrtimer(this), rqueue() {
                  
  index = id;
  seqno = 2;
  bid = 1;
   LIST_INIT(&nbhead);
  LIST_INIT(&bihead);
   logtarget = 0;
  ifqueue = 0;
  xpos=0.0;
  ypos=0.0;
  zpos=0.0;
  MobileNode *iNode;
 }
 
void
BroadcastTimer::handle(Event*) {
   agent->id_purge();
  Scheduler::instance().schedule(this, &intr, BCAST_ID_SAVE);
 }

void
HelloTimer::handle(Event*) {
    agent->sendHello();
   double interval = MinHelloInterval + 
                 ((MaxHelloInterval - MinHelloInterval) * Random::uniform());
   assert(interval >= 0);
   Scheduler::instance().schedule(this, &intr, interval);
}
 
void
NeighborTimer::handle(Event*) {
  agent->nb_purge();
  Scheduler::instance().schedule(this, &intr, HELLO_INTERVAL);
}
 
void
RouteCacheTimer::handle(Event*) {
  agent->rt_purge();
  Scheduler::instance().schedule(this, &intr, FREQUENCY);
 }

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