What’s new in the latest release of NetSim™ (ver 11.1)

New Release NetSim v11.1

New and enhanced features in NetSim (v11.1)

NetSim is the industry’s leading network simulation software for protocol modelling and simulation, network R & D and defence applications.
It is an end-to-end, full stack, packet level network simulator and emulator, providing network engineers with a technology development environment for protocol modelling, network R&D and military communications. The behaviour and performance of new protocols and devices can be investigated in an virtual network within NetSim at significantly lower cost and in less time than with hardware prototypes.

The Apr 19 release of NetSim (ver 11.1) rolls out exciting new features focused on enhancing usability:

  • Introducing Workspaces in NetSim – More freedom and flexibility
    • Users can group together NetSim source code, binaries, libraries, experiments and images related to one project
    • Export/import workspaces and export/import experiments
    • A single PC/VM and license can be used effectively by multiple users each of whom can independently modify the underlying source code
  • Building and linking your own code is now a breeze
    • Single click to open protocol source codes
    • Manual, complex and time-consuming tasks related to development environment, dependencies and compiler eliminated
    • Write your own code and simply build – NetSim will automatically simulate per your code
  • Understand NetSim internals through example simulations
    • 40+ examples
    • Ready to simulate scenarios to understand the working of different protocol/technology libraries in NetSim
  • Learn networking concepts through sample experiments (for Edu customers)
  • Benefit from well-structured documentation
    • User manual plus 13 technology library manuals
    • Sectioned as Simulation GUI, Model Features, Featured Examples and Reference Documents
    • 250 + Q & A available in our knowledgebase –  https://tetcos.freshdesk.com/support/home

Please contact us for more information about functionality, upgrades, pricing, or a demonstration!

Case Study: WSN Term Project at IIT-M with NetSim

Wireless Sensor Networks (WSN) is an active area of research and given below is a case study of a WSN term project done at Indian Institute of Technology (IIT) Madras using NetSim, titled “Estimation of Carrier Sense Range and its effect on IEEE 802.15.4 Sensor Networks”


  • Building probability models: The attenuation of IEEE 802.15.4 signals was to be observed and probability models for decoding range and carrier sense range were to be developed.
  • Estimating decoding range: This is the threshold below which packets sent from the transmitter are always received, and was to be estimated in terms of the probability that two devices separated by a distance are in decoding range.
Use Case
  • Developing custom code: Source C files, Sensor.c, CheckRoute.c and CCA.c of NetSim WSN library were modified. These codes were linked and debugged using NetSim’s project work environment.
  • Modeling network configurations: Custom Sensor network configurations were created using NetSim’s XML based network configuration files
  • Generating performance metrics: Packet and event traces were used for analyzing network performance metrics such as Throughput, Probability of packet discard, Average service rate and Mean Backoff duration
  • Creating dependency graphs

  • These are directed graphs representing the probability of link establishment between sensors.These graphs were generated by sampling the probability model for each link.
  • Statistically analyzing performance: Variation in network performance, from simulation, for different dependency graphs were plotted for the 10 most likely and 10 least likely DG’s
  • Establishing confidence interval: This provides the probability that a network will operate in a corresponding range. The confidence interval for operation of the 802.15.4 Wireless Sensor network with limits of performance, i.e. throughput and packet failure probability, was established.
The complete report (1.3 Mb) is available at http://tetcos.com/WSN_Project_Report_IITM.pdf