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,...
Connecting GNS3 to the internet is just another step to bring your emulated network lab closer to real gear. There are many ways to do this based on what internet connection you are using. If you just have an ADSL modem/router connected to the ethernet port of your physical machine having...
Oracle VirtualBox is my go to solution to efficiently and quickly test different Linux and Unix operating systems. It is one of the easiest and simplest virtualization software. Today, I upgraded to Oracle VirtualBox 6.1.16 in my Ubuntu desktop. When starting a VM, I encountered with this er...
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...
The "ifconfig" part actually puts up the tap device or is kind of the equivalent of plugging in a cable to the virtual NIC on the VM. The echo 1 to proxy_arp makes it so your tap device can broadcast and receive arp requests. This way you can assign any IP to it and have it ...
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