Graphical Network Simulator-3

Graphical Network Simulator-3 (shortened to GNS3) is a network software emulator first released in 2008.[1][2][3] It allows the combination of virtual and real devices, used to simulate complex networks. It uses Dynamips emulation software to simulate Cisco IOS.[1]:55[4]

Graphical Network Simulator-3
Developer(s)Jeremy Grossmann, Dominik Ziajka, Piotr Pękala
Initial release2008 (2008)
Stable release
Version 2.2.8 / 7 May 2020 (2020-05-07)
Repository
Written inPython
TypeNetwork simulator
LicenseGNU GPL
Websitegns3.com

GNS3 is used by many large companies including Exxon, Walmart, AT&T and NASA, and is also popular for preparation of network professional certification exams. As of 2015, the software has been downloaded 11 million times.[4]

References
  1. Hassine, Jameleddine; Hamou-Lhadj, Abdelwahab (29–30 September 2014). "Toward a UCM-Based Approach for Recovering System Availability Requirements from Execution Traces". In Amyot, Daniel; Pau Fonseca i Casas; Mussbacher, Gunter (eds.). System Analysis and Modeling: Models and Reusability. 8th International Conference, SAM 2014. 8769. Valencia, Spain: Springer. pp. 48–63. ISBN 9783319117430.
  2. Neumann, Jason C. (2015). The Book of GNS3: Build Virtual Network Labs Using Cisco, Juniper, and More. No Starch Press. ISBN 9781593276959. gns3 book.
  3. Welsh, "RedNectar" Chris (2013). GNS3 Network Simulation Guide. Packt Publishing Ltd. ISBN 9781782160816.
  4. Fogarty, Susan. "GNS3 Network Simulator Raises Its Game". Network Computing. UBM Tech. Retrieved 30 May 2015.


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