Queuing Models in NS2

M/M/1 is a system with poisson arrival time, servicing exponentially and a queue of unlimited capacity and type of FIFO Queue. This is the simplest queuing system.  NS2 supports various distributions like pareto, exponential, constant, unifrom, etc to handle the network dynamics and metrics. So it is very easy to test the given network link to monitor a given queue using any of these queuing models. The listing 3 and 4 are monitoring the link when DropTail queue is used with a capacity of finite and infinite. Listing 13.3 uses infinite capacity and Listing 13.4 uses Finite capacity The output screen shot is shown below the scripts for further understanding
Listing 3 – M/M/1 Queuing Model #new Simulator creation set ns [new Simulator] #trace file creation for capturing the UDP data set tf [open out.tr w] $ns trace-all $tf
#setting the exponential distribution param set lambda 30.0 set mu     33.0
#creation of nodes set n1 [$ns node] set n2 [$ns node] #The queue limit is 1Lakh as the capacity is infin…

Mannasim–A sensor Network Simulator for NS2 (ns-2.35)

Mannasim is a third party tool for simulating the Wireless sensor networks with carbon monoxide sensor and some other sensors etc. It was developed for ns2.29 version and based on the internet users the mannasim was been installed on ns-2.34 also.
There are patches available to download for versions 2.29 and ns-2.34. But over these two years since the launch on ns-2.35, there are so many queries whether these tools are ready for ns-2.35, here is the answer for that.
The source code and other information has been taken from these sites.
Installation of Mannasim in ns-2.35
For mannasim to be installed, here are the following files need to be modified.
Click the link to download the Mannasim.tar.gz file for ns-2.35

The tar file contains a folder mannasim
Paste the entire folder inside the ~ns-2.35/ folder
inside the mannasim/ folder (there will be a ns-modified-folder/ that contains set of files to be pasted to different location)
Copy the files from the ns-modified-files/ to these locations
Once everything is done, go to the terminal and type the commands one by one
If there are any errors, correct the errors (as per my OS, I used Linux Mint 15 64 bit, so no errors encountered)
Once the simulation is done, test the sensors using these following files
run these files using
ns mannasim-rede-plana.tcl
ns mannasim-rede-hierarquica.tcl
Please see the video for further details.
Installation of Mannasim in ns-2.35

Popular posts from this blog

AWK Scripts for NS2 to process data from Trace Files


ns2 installation in Ubuntu 14.04