NetSim Help Centre


Engineers and researchers worldwide use NetSim to analyze and design communication networks.

NetSim GUI makes it easy to model and visualize networks; built-in graphics help gain insights from output results. NetSim ships with protocol source C code which can be modified by users to write their own algorithms.

NetSim's technology libraries and utilities are all rigorously tested and designed to work together.

NetSim v13.2(Beta) Documentation. Older versions documentation (PDF format) can be found here.

Technology Libraries#


HTML (Compoment wise below) PDF Format
(C1) Internetworks
(C2) Legacy Networks
(C3) Advanced Routing
(C4) Mobile Adhoc Networks
(C5) Software Defined Networks
(C6) IoT-WSN
(C7) Cognitive Radio Networks
(C8) LTE
(C9) Vehicular Adhoc Networks
(C10) 5G NR
(C11) Satellite Communication Network
(C12) Underwater Acoustic Networks
(Add On) Network Emulator


NetSim User Manual#


HTML (Chapter wise below) PDF Format
01. NetSim-Introduction






PDF is a single document covering all chapters
02. Installation-and-License-Server-Setup
03. NetSim-GUI
04. Workspaces-and-Experiments
05. Simulating-different-networks-in-NetSim
06. Applications-(Network-Traffic-Generator)
07. Running-Simulation-via-Command-Line-Interface
08. Outputs--Results-Plots-and-Data-Files
09. Writing-Custom-Code-in-NetSim
10. Advanced-Features
11. NetSim-Emulator
12. Troubleshooting-in-NetSim


NetSim Experiments Manual (for Edu users)#


HTML is (Chapter wise below) PDF Format
1. INTRODUCTION TO NETWORK SIMULATION AND NETSIM
1.1 Introduction to NetSim (Level 1) link
1.2 Understand the working of basic networking commands -
Ping, Route Add/Delete/Print, ACL (Level 1)
link
1.3 Understand the events involved in NetSim DES
(Discrete Event Simulator) in simulating flow of one packet
from a Wired node to a Wireless node (Level 2)
link
1.4 Plot the characteristic curve of throughput versus offered
traffic for a Pure and Slotted ALOHA system (Level 2)
link
2. NETWORK PERFORMANCE
2.1 Understand Measures of Network Performance:
Throughput and Delay (Level 1)
link
2.2 Simulating Link Failure (Level 1) link
2.3 Delay and Little’s Law (Level 2) link
2.4 Throughput and Bottleneck Server Analysis (Level 2) link
3. ROUTING & SWITCHING
3.1 Study the working and routing table formation
of Interior routing protocols, i.e., Routing Information Protocol (RIP)
and Open Shortest Path First (OSPF) (Level 1)
link
3.2 Understand working of ARP and IP Forwarding
within a LAN and across a router (Level 1)
link
3.3 Simulate and study the spanning tree protocol (Level 1) link
3.4 Understanding VLAN operation in L2 and L3 Switches (Level 2) link
3.5 Understanding Access and Trunk Links in VLANs (Level 2) link
3.6 Understanding Public IP Address &
NAT (Network Address Translation) (Level 2)
link
3.7 M/D/1 and M/G/1 Queues (Level 3) link
3.8 Understand the working of OSPF (Level 3) link
4. TRANSMISSION CONTROL PROTOCOL (TCP)
4.1 Introduction to TCP connection management (Level 1) link
4.2 Reliable data transfer with TCP (Level 1) link
4.3 Mathematical Modelling of TCP Throughput Performance (Level 2) link
4.4 TCP Congestion Control Algorithms (Level 2) link
4.5 Understand the working of TCP BIC Congestion control
algorithm, simulate, and plot the TCP congestion window (Level 2)
link
5. WI-FI: IEEE 802.11
5.1 Wi-Fi: Throughput variation with distance (Level 1) link
5.2 Wi-Fi: UDP Download Throughput (Level 1) link
5.3 How many downloads can a Wi-Fi access point
simultaneously handle? (Level 2)
link
5.4 Multi-AP Wi-Fi Networks: Channel Allocation (Level 2) link
5.5 Wi-Fi Multimedia Extension (IEEE 802.11 EDCA) (Level 3) link
6. INTERNET OF THINGS (IOT) AND WIRELESS SENSOR NETWORKS
6.1 Cyber physical systems (CPS) and IoT – An Introduction (Level 2) link
6.2 One Hop IoT Network over IEEE 802.15.4 (Level 2) link
6.3 IoT – Multi-Hop Sensor-Sink Path (Level 3) link
6.4 Performance Evaluation of a Star Topology IoT Network (Level 3) link
6.5 Study the 802.15.4 Superframe Structure and analyze the effect of
Superframe order on throughput (Level 3)
link
7. COGNITIVE RADIO
7.1 To analyze how the allocation of frequency spectrum to the
Incumbent (Primary), CR CPE (Secondary User) affects throughput (Level 1)
link
8. CELLULAR NETWORKS
8.1 Study how call blocking probability varies as the load on a GSM network
is continuously increased (Level 1)
link

Additional Resources#