SWAN ns-2 Simulator

1. Hardware and Software Requirements

The SWAN simulator environment requires the ns-2 simulater version 2.1b9a. The ns-2 simulator runs under UNIX (e.g., Linux, FreeBSD, SunOS, Solaris) and Window environments. Simple scenarios run on any reasonable machine, but very large scenarios benefit from large amounts of memory.

To install the ns-2 simulator, you need a computer and a C++ compiler.

2. Installing SWAN Simulator

2.1 Download and install the ns-2 simulator version 2.1b9a from http://www.isi.edu/nsnam/ns/

2.2 Download SWAN ( ns-swan.tar.gz ) and place it in the 'ns-2 home directory' (e.g., for version 2.1b9a, ns-allinone-2.1b9a/ns-2.1b9a is the ns-2 home directory) and unpack :

            tar xvfz ns-swan.tar.gz

     The following files should be visible:

            <ns-2 home directory>/common/ip.h

            <ns-2 home directory>/common/packet.h

            <ns-2 home directory>/mac/ll.cc

            <ns-2 home directory>/mac/ll.h

            <ns-2 home directory>/mac/mac-802_11.cc

            <ns-2 home directory>/mac/mac-802_11.h

            <ns-2 home directory>/swan/run

            <ns-2 home directory>/swan/swan.tcl

            <ns-2 home directory>/swan/mobility.tcl

            <ns-2 home directory>/swan/traffic.tcl

            <ns-2 home directory>/swan/swan_ac.cc

            <ns-2 home directory>/swan/swan_ac.h

            <ns-2 home directory>/swan/swan_rc.cc

            <ns-2 home directory>/swan/swan_rc.h

            <ns-2 home directory>/tcl/lib/ns-default.tcl

            <ns-2 home directory>/tcl/lib/ns-mobilenode.tcl

            <ns-2 home directory>/tcl/lib/ns-packet.tcl

            <ns-2 home directory>/trace/cmu-trace.cc

2.3 Modify Makefile in ns-2 home directory

Add object files swan_ac.o and swan_rc.o to the list of object files as follows :

            OBJ_CC = \

                           tools/random.o tools/rng.o ....

                         ...

                      swan/swan_ac.o swan/swan_rc.o \

                           ...

2.4 Compile SWAN Simulator

            make clean; make

3. Running SWAN Simulator

To run SWAN simulator, go to swan directory ( <ns-2 home directory>/swan/ ) and type

run

Then a simple simulation example described below will be run.

../ns swan.tcl -rp AODV -tr AODV.tr -nam AODV.nam -cp traffic.tcl -sc mobility.tcl -x 670 -y 670 -nn 5 -stop 100 –dir result

This example script runs ns-2 using AODV routing protocol (-rp) for scenario (-sc) 670m (-x) by 670m (-y) simulation network size with communication pattern (-cp). This example simulation will run for 100 seconds (-stop) and produces output trace files AODV.tr (-tr) and AODV.nam (-nam). SWAN output result files are produced under ./result directory (-dir). The delay* files records the measured packet delays. The first column represents the time (in the simulation) that the delay is measured. The second column represents the measured packet delay. The rate* files records the shaping rate and the actual transmission rate to show how the SWAN rate controller works. The first column represents the time (in the simulation). The second column represents the shaping rate. The third column represents the actual transmission rate. The util* files records the measured real-time traffic rate to show how the SWAN admission controller works. The first column represents the time (in the simulation). The second column represents the real-time traffic rate. The numbers in the file names represent the node id. For example, delay3 represents the packet delays measured in node 3.

To change the parameters for SWAN, see <ns-2 home directory>/swan/swan.tcl

4. Source code at a glance

Please submit the following form, before downloading the
source code


  

    

      
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