Cisco IOS:GNS3 works with real Cisco Internet Operating System, you need to have a Cisco IOS for setting up virtual network labs. Distributing Cisco IOS is illegal so I could not support you for that, just Google it. Oracle VM VirtualBox:There are many Virtualization software are available,...
We want to run dCore in a virtual machine in a way that supports persistent configuration changes and is self-contained. We want to support cloned disk images, which is the easiest way to replicate many systems in a network emulation tool like GNS3. Installing dCore on the VM’s virtual d...