Most people who use the Mininet network simulator will download and set up the Mininet virtual machine image. However, there are times when we may want to use a different version of Mininet than the one already installed in the Mininet VM. For example, we may want to use the newest features of Mininet currently […]
When setting up a complex network scenario in the CORE Network Emulator, we may want to change the default configurations provided by CORE services. Fortunately, the CORE Network Emulator allows the user to customize services. A user may want to customize CORE services in order to: set up complex network emulation scenarios by adding more
CORE Services is a feature of the CORE Network Emulator — an open-source network simulator — that configures and starts processes on each node running in a network simulation. Examples of processes supported by CORE Services are: quagga, dhcpd, or radvd. Because the CORE Network Emulator implements its virtual nodes using a lightweight virtualization technology
The CORE Network Emulator development team released CORE version 4.7 in August 2014. I installed this new version of CORE on a newly-installed Linux 14.04 system and tested some of the new features. In this post, I list the new features that are most relevant to researchers who use the CORE GUI to set up
The occasion of my fiftieth post is a good milestone to pause and look back on the two years since I started blogging about open-source routing and network simulation. I will review the blog’s performance statistics and reflect on why I started this blog and what I want to do next. The chart above shows
The Cloonix open-source network simulator uses the Spice remote desktop system to provide a virtual desktop connection to quest virtual machines that run a graphical user interface, such as Microsoft Windows or a Linux desktop environment. To use a graphical desktop user interface on a guest VM, we access the VM using the Spice desktop
To run a program that uses a graphical user interface on a guest virtual machine running in the cloonix open-source network simulator, log into the guest VM from the host computer using SSH and forward the X11 display. Then, any X11 program you run on the guest VM using that SSH session, such as Wireshark,
As we work through this tutorial, we will learn how to use the cloonix graph interface to build a simulation scenario that includes two small IPv6 networks connected to each other by two routers via static routes. We will also learn how cloonix saves network topologies and guest virtual machine root filesystems. The cloonix open-source
The cloonix project provides a variety of root filesystems for use in the cloonix network simulator. These root filesystem only have the most basic software packages installed and will not support advanced network configuration (with the exception of router filesystems such as openwrt). To create a network simulation that runs real-world networking software, we need