Network Simulator News

This page is an archive of news articles related to network simulation and network emulation. In addition to this news page, I list all published posts on my Archive page.

December 2, 2016

  • GNS3 2.0 alpha 4 has been released, which includes a “save as you go” feature, smart packet capture, VPCS/clouds/switches templates, cloud node refactoring, a new NAT node and some architectural changes to GNS3 Server and GUI.
  • GNS3 released GNS3 version 1.5.2 in August 2016. Notable features added since version 1.3, when I last used GNS3, are: VMWare integration, remote packet capture support, Docker containers may be used to emulate nodes in the network, and GNS3 projects may be saved in a portable file format.

November 18, 2016

November 1, 2016

  • The Cloonix network emulator has been updated to version 33.
  • LStacker is a new project that builds virtual networks consisting of containers and bridges. It supports both LXC and Docker containers. It relies on new LXD container management features available in the Ubuntu 16.04 and later. See the LXD 2.3 release notes for more details. LStacker might be usable as a network emulator.

October 2, 2016

September 16, 2016

August 22, 2016

August 4, 2016

  • DockEMU is a network emulator that uses Docker Containers and Linux Bridging to emulate IP network functionality and NS-3 to emulate Ethernet and physical networking functionality. It seems like an effort to create a “best of both worlds” network emulator. DockerEMU was published about two years ago but has not been updated since. The paper describing DockEMU, DOCKEMU — A Network Emulation Tool, is available on academic publishing sites.

July 4, 2016

  • Amazon’s new IoT Dash Button can be programmed to interact with the Internet of Things. Very cool project for open-source enthusiasts who run code on AWS.

June 21, 2016

  • The Cloonix network emulator has been updated to v30. This new release includes a new client mode — cloonix_zor — that will search for running cloonix servers. It also replaces the slirp_lan object with a NAT object, and lays the groundwork for a new A2B object, which will enable users to specificity the attributes of a link.

June 16, 2016

  • Cumulus Networks’ Topology Converter may be used to create network emulation scenarios using VirtualBox VMs and Vagrant. It simplifies network emulation if you want to use tools like VirtualBox, Vagrant and/or libvirt.

May 30, 2016

May 16, 2016

  • The Ostinato packet traffic generator and analyzer claims to be “Wireshark in reverse”. I have not used it yet, but it seems to be a full-featured traffic generator that will run well in a VM so it should be useful tool to use in network emulation scenarios.

May 2, 2016

April 25, 2016

  • I wrote a long blog post about Mininet-WiFi. I included four tutorials that demonstrate Mininet-WiFi’s ability to emulate mobile stations in an WiFi software defined network.

April 20, 2016

  • OFNet is a new project designed to emulate SDN networks. It provides visual presentations of control plane transactions. The project offers a virtual machine image you can try. OFNet is an open source project and the source code is included on the OFNet VM, in the ~/ofnet/src directory. I e-mailed the developer to understand the status of the project and he says it is an active project and updates to the project web site will be coming in the future.
  • Unified Networking Lab released another update, to version 1.0.0-8, delivering many improvements. See the announcement on the UNetLab web site.

April 11, 2016

April 4, 2016

  • Greencloud is a packet-level simulator for data centers that models energy use and efficiency. It simulates the energy consumed by virtual data center IT equipment. Greencloud may be installed by compiling the source code or by downloading a pre-configured virtual machine. It is released under the General Public License Agreement and is an extension of the NS2 network simulator.

March 28, 2016

March 23, 2016

March 15, 2016

March 9, 2016

March 1, 2016

February 18, 2016

February 17, 2016

February 4, 2016

January 26, 2016

  • Shadow is an open-source network simulator/emulator hybrid that runs real applications like Tor and Bitcoin in a discreet-event network simulation. I added a description in the Open Source Network Simulators page.

January 18, 2016

December 15, 2015

  • The VNX network simulator added a packaged laboratory scenario designed to explore an OpenStack environment running OpenDaylight as the network management provider. See the VNX web site for more information.