Network Simulator

ns-3 is a discrete-event network simulator for Internet systems, targeted primarily for research and educational use. ns-3 is free, open-source software, licensed under the GNU GPLv2 license, and maintained by a worldwide community.

Recent News (Older)

  • ns-3.34 released

    The ns-3.34 release is now available, featuring a significantly refactored and improved Wi-Fi MAC and PHY design, enabling both 802.11ax uplink and downlink OFDMA models and a multi-user OFDMA scheduler. ns-3.34 also contains a new phased array model, a new TCP congestion control model, and more. Find out more about ns-3.34 on its release page.

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  • ns-3 selected for Google Summer of Code

    We are pleased to again be selected for Google Summer of Code, our 12th year in the program. Student applications are due by April 13. More information about ns-3 and GSoC can be found on our wiki page.

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  • ns-3.33 released

    The ns-3.33 release is now available, due to contributions from twenty three authors. ns-3.33 contains the following new features:

    • TCP CUBIC congestion control, and alignment of ECN handling with Linux behavior
    • New error models for Wi-Fi, based on link simulation results
    • A channel condition model for vehicular scenarios

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Google Summer of Code

ns-3 is participating in the 2021 Google Summer of Code.
Find out more