NS2 Simulation Code for MANET

Characteristics of MANET:

• Light weight terminals.
• Dynamic topology.
• Multihop routing.
• Distributed operation.
• Autonomous terminal.
• Shared physical medium.

Advantages of MANET:

• Robust due to decentralize administration.
• Self-configuring network .
• Network can be set up at any place and time.
• Improved flexibility.
• They provide access to information and services regardless of geographic position.
• Independence from central network administration.
• Less expensive.

Sample NS2 Simulation code for MANET:

This is the code for inserting, look up and deleting entries in routing table involved in MANET.
void
aodv_rt_entry::pc_insert(nsaddr_t id)
{

if (pc_lookup(id) == NULL) {

AODV_Precursor *pc = new AODV_Precursor(id);

assert(pc);
LIST_INSERT_HEAD(&rt_pclist, pc, pc_link);
}
}

aodv_rt_entry::pc_lookup(nsaddr_t id)
{

AODV_Precursor *pc = rt_pclist.lh_first;

for(; pc; pc = pc->pc_link.le_next) {

if(pc->pc_addr == id)
return pc;

}
return NULL;

}

void
aodv_rt_entry::pc_delete(nsaddr_t id) {

AODV_Precursor *pc = rt_pclist.lh_first;

for(; pc; pc = pc->pc_link.le_next) {

if(pc->pc_addr == id) {

LIST_REMOVE(pc,pc_link);
delete pc;
break;

}