Wireless Node Configuration in Network Simulator 2 (NS2)

The node configuration in ns2 is a special task in which the number of nodes can be configured for a set of parameters. The following table tells about the node  configuration parameters as defined in the ns-lib.tcl

The readers are requested to refer the ns-lib.tcl file for more information.

Option	Available Values	Remarks
addressType	flat, hierarchichal
MPLS	ON,OFF	Multi protocol Label Switching
wiredRouting	ON, OFF
llType	LL, LL/Sat	Link Layer
macType	Mac/802_11, Mac/Csma/Ca, Mac/Sat, Mac/Sat/UnslottedAloha, Mac/Tdma	Medium Access Control
ifqType	Queue/DropTail, Queue/DropTail/PriQueue	Interface Queue type
phyType	Phy/wirelessPhy, Phy/Sat	Physical Layer Type
adhocRouting	DIFFUSION/RATE, DIFFUSION/PROB, DSDV, DSR, FLOODING, OMNIMCAST,AODV,TORA,PUMA	adhoc routing protocol
propType	Propagation/TwoRayGround, Propagation/Shadowing	Propagation Type
antType	Antenna/OmniAntenna,	Antenna type
Channel	Channel/WirelessChannel, Channel/Sat	Channel to be used
mobileIP	ON,OFF	to set the IP for Mobile or not
energyModel	EnergyModel	energy model to be enabled or not
initialEnergy	<joule>	in terms of joules (Ex: 3.24)
txPower		Power in terms of Watts (0.32)
rxPower		Power in terms of Watts (0.1)
idlePower		Power in terms of Watts (0.02)
agentTrace	ON, OFF	Tracing to be on or off
routerTrace	ON, OFF	Tracing to be on or off
macTrace	ON, OFF	Tracing to be on or off
movementTrace	ON, OFF	Tracing to be on or off
errProc	UniformErrorProc
toraDebug	ON, OFF

 

An Example

$ns node-config -addressType hierarchical \
                   -adhocRouting AODV \
                   -llType LL \
                   -macType Mac/802_11 \
                   -ifqType Queue/DropTail/PriQueue \
                   -ifqLen 50 \
                   -antType Antenna/OmniAntenna \
                   -propType Propagation/TwoRayGround \
                   -phyType Phy/WirelessPhy \
                   -topologyInstance \$topo \
                   -channel Channel/WirelessChannel \
                   -agentTrace ON \
                   -routerTrace ON \
                   -macTrace OFF \
                   -movementTrace OFF

Tracegraph - a graphing software to plot the trace files from NS2

Tracegraph is a third party software helps in plotting the graphs for NS2 and other networking simulation softwares. But the sad point is the software is not maintained by anyone and the happiest point is the software works fine still and it is free. 

You may download the tracegraph software from these locations.

For windows: https://dl.dropbox.com/u/24623828/tracegraph202.rar

For Linux : https://dl.dropbox.com/u/24623828/tracegraph202linux.tar.gz

https://dl.dropbox.com/u/24623828/mglinstaller.gz

There are actually two files one with the matlab runtime library file and other is the original software tracegraph.

Tracegraph when opened, it opens 3 windows, 

• one window to select the trace file (.tr) that was created by NS2 (depending on the size of the trace file , the processing time also varies)
• Second window is the main window in which you can see the graphs for various performance characteristics like throughput, End to End Delay, jitter, etc in 2D and 3D facillity. Even it can plot the histograms too.
• Third window is nothing but the Simulation Information Windows, that you can see the packet loss, packet delivery, end to end delay for the total network, information about the intermediate nodes, source and destination nodes.

Tracegraph exists for windows as well Linux, you can download both the versions at these locations

For windows Installation : http://www.nsnam.com/2011/08/tracegraph-installation-in-windows-7.html

For Linux Installation : http://www.nsnam.com/2011/08/tracegraph-installation-in-fedora-12.html

the following is the snapshot for windows installation: Copy the PATH as done in the pic and paste it in the environmental variables

 

 

proc directory in Linux

If by any chance, if you want to know about the processor, memory, IO Memory, Ports, etc about the system/CPU. Then you can look into the folder /proc in Linux. There are various files that tells you the information about the CPU.
Some Examples
if you want to know about the CPU Information, go to the terminal and try this
# cat /proc/cpuinfo
For memory information
# cat /proc/meminfo
For IO Memory information
# cat /proc/iomem
if you want to see how long the system is up can be seen using the file uptime
# cat /proc/uptime
(The above will list two numbers, one being the uptime of the system and other being uptime for all the cores of the processor)
and other information like scheduling, filesystems, etc can be seen from the /proc folder