GNS3
GNS3 3 0.8.3
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Graphical network simulator that allows simulation of complex networks.   Free
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GNS3 is a graphical network simulator that allows simulation of complex networks.

To allow complete simulations, GNS3 is strongly linked with:
  • Dynamips, the core program that allows Cisco IOS emulation.
  • Dynagen, a text-based front-end for Dynamips.
  • Qemu, a generic and open source machine emulator and virtualizer.
  • GNS3 is an excellent complementary tool to real labs for network engineers, administrators and people wanting to pass certifications such as CCNA, CCNP, CCIP, CCIE, JNCIA, JNCIS, JNCIE.
It can also be used to experiment features of Cisco IOS,
What's New
Version 3 0.8.3:

New features:

  • Option to freely use the first VBox interface inside VMs (i.e. eth0 on Linux).
  • New base configuration (startup-config) for devices with NM-16ESW (named baseconfig_sw.txt).
  • Console and headless mode support for VirtualBox devices.
  • Embedded console/terminal server to access VirtualBox VM consoles using Telnet.
  • Support for drag & drop of topology files inside GNS3.
  • Double quote support for Qemu options and ASA kernel/initrd command lines.
  • Import & export for GNS3 configuration file (gns3.ini).
  • Global TCP port tracker to allocate ports and avoid conflicts (console + AUX ports for IOS routers and console ports for Qemu-like/VirtualBox devices are tracked).
  • Scripts for using consoles with VBox VMs (Windows only).
  • Backup nvram export when Dynamips has crashed.
  • New command line option for patched Putty on Windows (for details: http://forum.gns3.net/topic4859-20.html).
  • Experimental live pipe capture (Windows only).
  • Option (activated by default) to use the VirtualBox VM names to name VirtualBox devices in GNS3.
  • Complete IPv6 support (with correct functions).
  • Support for binding on specific addresses when loading a topology.
  • Option to track opened node consoles in order to close them when the node gets deleted.
  • New Dynamips 0.2.8-RC4 community (full IPv6 support), only included in Windows all-in-one package for now.
  • A patched putty is included (Windows packages). Details here

Fixes and other improvements:

  • Fixed issue when saving as a project.
  • Workaround: sparse memory feature is not activated on c2600 and c1700 platforms because Dynamips can freeze after IOS restarts (Windows only).
  • Added Idle PC help button to gives some hints how to get good idle pc values.
  • Prevent tail processes staying in memory after stopping captures.
  • Fixed/improved some console command lines (SecureCRT, TeraTerm, Putty).
  • Fixed issue when connecting recent Qemu (new -net syntax) to other non-Qemu devices.
  • Fixed vboxwrapper loading issue for DMG version on OS X.
  • Fixed rpcap interface name parsing on Windows.
  • Improved securecrt.vbs to "press" a enter into the device console to show the prompt.
  • Modified default IOS startup-config (baseconfig.txt).
  • Handle connection lost during Idle pc calculation.
  • Warn users if their working directories are not accessible and/or writable.
  • Allow dash and brackets for device hostnames.
  • Option to clear stopped captures from the captures dock.
  • Italian and Chinese translations updated.
  • Fixed bug that prevented loading topologies with non-existing IOS paths.
  • Some minor fixes for recent files menu (add saved file paths, order, non existing path entries are removed etc.).
  • New key shortcuts for object rotation (notes, ellipses, rectangles). ALT and + (or P) / ALT and
Version 3 0.8.3:

New features:

  • Option to freely use the first VBox interface inside VMs (i.e. eth0 on Linux).
  • New base configuration (startup-config) for devices with NM-16ESW (named baseconfig_sw.txt).
  • Console and headless mode support for VirtualBox devices.
  • Embedded console/terminal server to access VirtualBox VM consoles using Telnet.
  • Support for drag & drop of more...
Requirements
Intel, OS X 10.7 or later



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Downloads:1,781
Version Downloads:1,360
Type:Utilities : Network
License:Free
Date:13 Jul 2012
Platform:Intel 64 / Intel 32 / OS X
Price:Free0.00
Overall (Version 3 0.x):
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GNS3 is a graphical network simulator that allows simulation of complex networks.

To allow complete simulations, GNS3 is strongly linked with:
  • Dynamips, the core program that allows Cisco IOS emulation.
  • Dynagen, a text-based front-end for Dynamips.
  • Qemu, a generic and open source machine emulator and virtualizer.
  • GNS3 is an excellent complementary tool to real labs for network engineers, administrators and people wanting to pass certifications such as CCNA, CCNP, CCIP, CCIE, JNCIA, JNCIS, JNCIE.
It can also be used to experiment features of Cisco IOS, Juniper JunOS or to check configurations that need to be deployed later on real routers.

This project is an open source, free program that may be used on multiple operating systems, including Windows, Linux, and MacOS X.

Features:
  • Design of high quality and complex network topologies.
  • Emulation of many Cisco IOS router platforms, IPS, PIX and ASA firewalls, JunOS.
  • Simulation of simple Ethernet, ATM and Frame Relay switches.
  • Connection of the simulated network to the real world!
  • Packet capture using Wireshark.
  • Important notice: users have to provide their own IOS/IPS/PIX/ASA/JunOS to use with GNS3.


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