NetSim Support Portal

FAQ 19

• What is your support email ID ?
• What is your contact number ?
• What are the minimum system requirements for NetSim & NetSim license server?
• Does NetSim support SDN?
• What is the support and upgrade policy for NetSim?

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Getting Started 18

• Error Message - " No License for product (-1) "
• Where can I find documentation and videos on NetSim?
• No response when clicking OK button in NetSim License Window?
• Why does an error pop up arises when opening the NetSim.sln file through visual studio. ?
• How to avoid getting the licensing window on NetSim startup?

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Purchase / Pricing 4

• Is NetSim available for personal use ?
• Do you provide a trial / evaluation / demo version of NetSim?
• What is the cost of NetSim academic / standard version ?
• What is the difference between standard and academic versions?

Licensing 14

• How to restrict access to the NetSim license server web interface?
• How to set-up MAC address based licenses to run NetSim?
• How to use NetSim (RLM) License Server through a Firewall?
• How to reserve NetSim Licenses for a specific PC/Laptop?
• How do I use NetSim across a firewall? What ports should be opened?

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Cognitive Radio - 802.22 12

• Understanding 802.22 Superframe structure using NetSim Packet Trace log file
• Primary User Emulation attack in Cognitive Radio
• How do secondary users switch channels in NetSim CR ?
• How is spectrum sensing done in NetSim 802.22 library?
• What packets does the SU send when it senses PU in 802.22 CR networks?

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Internet of Things (IOT), Wireless Sensor Networks, 802.15.4 65

• Where can I find the latest LEACH source code?
• What is an agent in WSN simulation ?
• What is the WSN packet size and how is throughput calculated ?
• How to configure a mobile receiver in WSN/IOT simulation in NetSim?
• Add a character in COAP response payload and reading it at receiver

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GSM / CDMA / LTE / LTE - A 26

• How can I print the MME's Home location register (HLR) to a file
• Can you explain the working of LTE NetSim code ?
• What are the settings needed to setup handover in GSM and how can this be analysed?
• When and how does handover occur in LTE?
• How does association happen in LTE in NetSim?

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Wireless LAN - 802.11 29

• Does NetSim Support 802.11 p ?
• How are packet collisions modeled in NetSim?
• How do I configure 802.11 simulation for RTS / CTS to work ?
• How do I change the random back off algorithm in WLAN ?
• How do we change CW(min) and DIFS value for a 802.11 Wi-fi node?

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MANETs 27

• Why is TCP Disabled when running IDS in MANET?
• How to set Transmitter Power in MANET nodes individually?
• Why do I see more packet received than sent in UDP metrics of MANET ?
• How to check the connectivity between two nodes in MANET?
• How do I vary the channel capacity (PHY Data Rate) for nodes running IEEE802.11 Protocol?

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Routing and Switching 24

• Why are RIP and OSPF protocols listed under Application Layer of Router?
• Why are ICMP packet sent at the start of a simulation in NetSim?
• Why does the switch broadcast initially when a simulation in NetSim is started ?
• How to setup Static Route IP in NetSim?
• How do we set up Access control lists / Firewalls with respect to IP in NetSim?

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Network Emulation - Interfacing with external PCs/Devices 14

• How do I connect NetSim to real PC's ?
• When I run ping in emulation why is it showing round trip delay but only one direction delay ?
• How does an Emulation Application in NetSim Work?
• We are developing an app, and want to know how to use NetSim emulator to study the effect of network congestion/delay on the app performance
• Is the real-virtual node mapping based on IP?

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Mobility Models 7

• What is calculation interval parameter in NetSim's mobility models?
• How do I set different mobility models in NetSim? And get the nodes(s) position over time?
• Why am I not able to see node movement in the animation?
• How to move a node from one coordinate to another pre-decided coordinate say (100, 100)?
• How to set the initial positions for devices from a .csv/xl file?

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VANETs 31

• How do I interface with SUMO for VANET simulation?
• Simulation halts with message "creating sumo pipes"?
• Unable to open SUMO Config file in NetSim via New->VANET
• How to perform VANET Simulations in NetSim over map view?
• Please explain the steps involved in interfacing SUMO with NetSim

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Transmission Control Protocol (TCP) 2

• Explain the working of different TCP congestion control algorithms in NetSim?
• Understanding TCP Bandwidth Delay Product using Netsim

Software Defined Networking (SDN) 11

• How do I configure a sensor to be a SDN controller?
• How to add custom commands to NetSim SDN/ Interactive Simulation module?
• Can different types of controllers such as ONOS, OpenDaylight used to connect to SDN architecture in NetSim?
• I see no response to my SDN command. Reasons and resolutions.
• How to set nodes as SDN controllers dynamically (at run time) in NetSim?

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5G NR 26

• How does the MAC Scheduler work in NetSim 5G NR?
• Modeling Heterogenous networks (HetNets) in NetSim 5G
• Simple 5G Use Case: End to end simulation with 1 gNB and multiple UEs
• How to integrate SUMO for 5G simulations in NetSim?
• NetSim 5G: Introducing propagation delay considering speed of light

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Modeling & Simulation 24

• What code executes when a node is dropped?
• Do you have directional antenna in NetSim?
• Where can I see the properties of a wireless device?
• How does the Random Number Generator in NetSim work?
• How to model errors in links in NetSim?

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Interfacing with other software 19

• How do I pass the node co-ordinates to MATLAB?
• Troubleshooting - Interfacing MATLAB with NetSim
• Can I generate a pcap file (wireshark packet capture) at a node in NetSim?
• How do I plot the simulated TCP congestion window in Wireshark ?
• How do I generate the simulated TCP's flow graph in Wireshark?

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Simulation Results and Trace Files 45

• How does one start understanding the packet trace ?
• In NetSim how do I measure 'Jitter' from the output results ?
• How I find out the number of out of order packets at the end of a simulation ?
• How do I calculate route acquisition time in MANET simulations ?
• How do I get the source data for NetSim Plots?

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User Interface 28

• How to resolve Error number=126 in NetSim?
• How to record & save NetSim Packet Animation as a Video file?
• "Error connecting to the Internet, opening in Grid View" - NetSim v10.2
• Unable to see device properties?
• How do I place a device, establish links and run a simulation using NetSim GUI?

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Application Modeling 6

• Why are packets being transmitted beyond the Application end time?
• How do I send one packet every one second?
• How to assign priority to applications?
• Why do I see throughput zero for Multicast Applications?
• How to create applications in WSN between the sink and the sensors automatically via code instead of doing it manually in GUI?

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NetSim Internals 37

• How do I get the current simulation time?
• What is the API to create a packet?
• How do I write to NetSim console for debugging ?
• Are there any videos on how to link your code to NetSim?
• How do I change the payload of a packet in NetSim?

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Visual Studio - Settings/Errors 14

• Which version of Visual Studio is required for NetSim?
• How to resolve Error LNK1123 when building code?
• What is the development environment settings for NetSim v10/v11/v12?
• Why are Linker errors displayed while building NetSim projects in Visual Studio?
• What components of Visual Studio Community 2017/2019 to install and configure to work with NetSim source codes?

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Machine learning (ML) with NetSim 3

• Changing internal simulation states in NetSim when interfacing ML algorithms
• Offline and online Machine Learning (ML) with NetSim
• Reinforcement learning (RL) - MDP, Q-learning - with NetSim