Promiscuous Mode in AODV (ns 2.34)

In a network, promiscuous mode allows a network device to intercept and read each network packet that arrives in its entirety. This mode of operation is sometimes given to a network snoop server that captures and saves all packets for analysis (for example, for monitoring network usage). Its often used to
monitor network activity

Files to be changed
1. ~ns-2.34/aodv/aodv.h
2. ~ns-2.34/aodv/aodv.cc
3. ~ns-2.34/lib/tcl/ns-mobilenode.tcl

1. Make AODV agent a child class of Tap (you should have a member function tap), and define the Mac variable

   1: #include <mac.h>

   2: class AODV: public Tap, public Agent {

   3: public:

   4: void tap(const Packet *p);

   5: ......

   6: protected:

   7: Mac *mac_;

   8: ......

   9: }

2. Modify aodv/aodv.cc
Define TCL command "install-tap" and implement AODV::tap()

   1: int AODV::command(int argc, const char*const* argv) {

   2:  

   3: ......

   4:  

   5: else if(argc == 3) {

   6:  

   7: ......

   8:  

   9: else if (strcmp(argv[1], "install-tap") == 0) {

  10: mac_ = (Mac*)TclObject::lookup(argv[2]);

  11: if (mac_ == 0) return TCL_ERROR;

  12: mac_->installTap(this);

  13: return TCL_OK;

  14: }

  15:  

  16: } 

  17: return Agent::command(argc, argv);

  18:  

  19:  

  20: }

  21:  

  22: void AODV::tap(const Packet *p) {

  23: //put your code here

  24: fprintf(stdout,"Node in Promiscuous Mode");

  25: } 

  26:  

3. Modify tcl/lib/ns-mobilenode.tcl

   1: Node/MobileNode instproc add-target { agent port } {

   2: $self instvar dmux_ imep_ toraDebug_ mac_

   3: ......

   4: # Special processing for AODV

   5: set aodvonly [string first "AODV" [$agent info class]] 

   6: if {$aodvonly != -1 } {

   7: $agent if-queue [$self set ifq_(0)] ; # ifq between LL and MAC

   8: $agent install-tap $mac_(0)

   9: ......

  10: }