VirtualBox is an open-source virtual machine manager and hypervisor that may also be used as a network emulator. In addition to creating and managing individual virtual machines, VirtualBox can connect virtual machines together to emulate a network of computers and network appliances such as routers or servers. VirtualBox works on the major computing platforms: Windows, […]
This post lists the commands required on each node to build a network of three Ubuntu Linux routers. Each router is connected to the other two routers and is running quagga. Each router is also connected to a PC running Ubuntu Linux. I use this network configuration to evaluate network emulators and open-source networking software
The Cloonix network simulator has been updated to version 29, which adds the ability to save network simulation topologies and node configurations to a directory. Users may save a network topology and all node configurations to a directory of their choice. They may also load saved topologies into Cloonix so they can restore a network
GNS3 1.3 will create and manage VirtualBox virtual machine linked clones from within the GNS3 user interface. This simplifies the process of setting up VirtualBox virtual machines in GNS3, which makes GNS3 easier to use for studying the operation of open-source routers, switches, and hosts in network simulation scenarios. In this post, I will show
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
Previously, we installed the CORE Network Emulator from source code and installed the network services used by CORE. Now, we want to run a simulated networking scenario and modify the configuration of the quagga routing daemon on one or more virtual routers. To do this, we open a shell to the node and start the