Download GNS3 for the Linux Operating system.So it's not an operating system issue from what I can tell at this stage. I then installed Workstation Pro on it, imported the GNS3 VM. I ensured Hyper-V, VB or Workstation was not installed on it. So I pulled out an old laptop with Windows 10 on it. I thought my issue might be the operating system. But I think not all hardware is able to handle nested virtualisation. I would still like to try and get either VirtualBox or Workstation working with the GNS3 VM successfully. I now just need to learn how to get GNS3 to connect to a remote machine. I was confident that this would work as we are not dealing with nested virtualisation in the same way as trying to do it through software like VirtualBox or Workstation. I then started a project, placed a Cisco router on it, and that also started. I have now grabbed an old server, installed ESXi 6.5 on it, imported the GNS3 VM and it started. Subsequent to my opening post, I then completely uninstalled everything to do with virtualisation and then re-installed Workstation Pro fresh and imported the GNS3 VM with no success trying to start it. It would not start and the message was to do with KVM that I quote in my post.Īfter going through all the things I listed that I'd done to try and resolve the issue, I then turned first to VMWare Workstation Player, then to a trial version of VMWare Workstation Pro with similar results. I then imported the GNS3 VM into VirtualBox. So, at the start there was no other hypervisor software competing with VirtualBox. And so the first hypervisor I installed on it was Virtualbox. I'll try to clear up some of my post.įirst of all, I have windows 11, non-pro, and so I cant install Hyper-V on it. Has anyone been able to get nested virtualisation working on a Windows 11 computer with an Intel CPU? So, at this stage with no other info I suspect that the Intel chip in a Windows 11 OS is not playing nicely with nested virtualisation, or maybe it supports virtualisation but not nested. I am having the same issue with Workstation Pro and Player and if I try to start a device in a project accessed via the webpage. I have 16 Gigabytes of RAM and over 350 Gigabytes of storage available on the main SSD. The CPU is an 11th Gen Intel Core i7-11800H, with 8 cores 2.3GHz per core. My laptop is an Acer Predator Helios 300, Model Number N20C3 running a fully updated Windows 11 Operating System (not Pro). "VMWare Workstation does not support nested virtualisation on this host. With both Workstation packages, it fails with a message. At one stage, I disabled the firewall and still had no success.Īttempting to run a device without this KVM enabled does not solve the issue as the device cannot start. I have also made sure that all the applications involved have their ports open in the firewall. I checked Task Manager and made sure that Windows was showing that Virtualisation was enabled in the CPU section, and it is. I then checked that Virtualisation was enabled in the BIOS and it is. "C:\Program Files\Oracle\VirtualBox>VBoxManage.exe modifyvm "GNS3 VM" -nested-hw-virt on" This made no difference. I started my windows command prompt and ran this command to ensure that nested virtualisation is enabled on my laptop. I went to System, Processor and made sure that the "Enable Nested VT-x/AMD-V" feature is ticked and it was. I checked the setting of the VM in Virtualbox. It is possible to turn off KVM support in the gns3_nf by adding enable_kvm = false to the section." ""KVM acceleration cannot be used (/dev/kvm doesn't exist). But if I try to start any device, I get this error. But I can web into the VM and start creating a lab. When I start VB, it does boot the GNS3 VM, but never recognises that it has started. I am trying to set up Virtualbox (latest version) to run a GNS3 VM for my CCNA studies.
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