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Graphical Network Simulator-3

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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
GNS3 logo.png
Developer(s) Jeremy Grossmann
Initial release 2008; 10 years ago (2008)
Stable release
2.1.8 / 14 June 2018; 2 months ago (2018-06-14)
Repository Edit this at Wikidata
Written in Python
Type Network simulator
License GNU GPL

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]


  1. ^ a b Hassine, Jameleddine; Hamou-Lhadj, Abdelwahab (September 29–30, 2014). "Toward a UCM-Based Approach for Recovering System Availability Requirements from Execution Traces". In Amyot, Daniel; Pau Fonseca i Casas; Mussbacher, Gunter. 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. 
  3. ^ Welsh, "RedNectar" Chris (2013). GNS3 Network Simulation Guide. Packt Publishing Ltd. ISBN 9781782160816. 
  4. ^ a b Fogarty, Susan. "GNS3 Network Simulator Raises Its Game". Network Computing. UBM Tech. Retrieved 30 May 2015. 

External linksEdit