

In past, I played GNS3 with Cisco IOS files. Need to have at least 4GB physical RAM and i3 CPU.need to install too many third-party software.Finally, install GNS3 all-in-one installer in your PC or Laptop.Other settings might be changed for GNS3 VM in Vbox application.

Host-only-Adapter is to interconnect with your Laptop or PC. NAT is to access the Internet for GNS3 VM. One is assigned as NAT and another one is assigned as Host-only-Adapter. After importing that (.ova) file, right-click that GNS3 VM and click settings.Click File in Menu bar > Click Import Appliance > Choose the (.ova) file located in your PC or Laptop > Click Next > Click Import.Next, open Vbox application and import the downloaded (.ova) file in Vbox as below guideline.After installing Vbox application, one of virtual NIC (vNIC) would be appear automatically in network setting of your PC or Laptop (check with ncpa.cpl command) and that vNIC is to interconnect with VMs.Firstly, install the latest Virtual box application in your laptop or PC and its extension pack also.Step by step installation of GNS3 VM (.ova) file in Virtual Box and GNS3 1.5.3 Download HERE latest version of Virtual Box application and its extension pack or download HERE for VMware Workstation Pro 12.1.1.Download HERE for (GNS3 1.5.3) installer and.Download HERE for GNS3 VM 1.5.3 (.ova) file.Virtual Box application or VMware Workstation Pro ( Just only need one installer that is most compatible with you.).
