NetSim Support Portal

Cognitive Radio - 802.22 13

• 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 57

• What is the WSN packet size and how is throughput calculated ?
• Is RPL protocol available in NetSim?
• I want to change the default ranges of the parameters, which file do I edit?
• How do I enable beacon mode in 802.15.4?
• How do I configure sleep time (inactive / active times) for Sensors in NetSim?

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GSM / CDMA / LTE / LTE - A 20

• 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?
• How to calculate PHY Data Rate in LTE?
• How can I plot SNR measured by UE?

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Wireless LAN - 802.11 25

• 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?
• What are the propagation (path loss, fading and shadowing) models supported in NetSim?

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MANETs 24

• Why is TCP Disabled when running IDS in MANET?
• 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?
• Configuring the radio communication range of wireless nodes and sensors in NetSim

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Routing and Switching 22

• 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 15

• 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 8

• 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 35

• 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) 1

• 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 36

• Why Throughput appears as -1 in Application_Packet_Log.csv in the Log Folder
• How to obtain PRB allocation metrics for 5G simulations in NetSim?
• Obtaining BLER vs. Time in NetSim 5G when running Outer loop link adapation (OLLA)
• Simulating a simple DDoS attack in 5G
• How to obtain SINR, MCS and Throughput vs. Time for a 5G 1gNB-1UE scenario with a time varying radio channel in NetSim?

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UWAN 2

• Simulating Denial of Service (DoS) attacks in Underwater Networks
• How can a user modify the underwater acoustic propagation models in NetSim?