Then add it in the GUI as a Linux QEMU node.

: This must be enabled in your BIOS (and your hypervisor if running EVE-NG as a VM) to run QEMU nodes. Naming Consistency : If your file is named something like image123.qcow2

Search for the node type you just installed (e.g., Cisco CSR1000v).

Emulating real-world networks requires robust tools, and EVE-NG (Emulated Virtual Environment Next Generation) stands out as a premier choice for network engineers. While EVE-NG supports various virtualization technologies, Quick Emulator (QEMU) images are the backbone for running heavy, enterprise-grade network operating systems like Cisco IOS-XR, Arista EOS, Palo Alto PAN-OS, and Fortinet FortiGate.

Do not use the default template settings if your server is low on resources. For instance, a Cisco CSR1000v can often run smoothly on 3GB of RAM instead of the default 4GB in lab environments.

What of EVE-NG are you currently running (Community or Professional)?

Downloading is just the beginning. To make QEMU nodes run smoothly:

Cisco IOSv (IOSv L3):

Drag and drop your downloaded source image file into this directory. Step 3: Convert or Rename the Image File

/opt/unetlab/wrappers/unl_wrapper -a fixpermissions

Vendors often distribute virtual appliances as OVA or VMDK files meant for VMware. You must convert these formats into the native QEMU format ( .qcow2 ) before EVE-NG can use them. Step-by-Step Conversion via CLI

Which (Cisco, Palo Alto, Fortinet, etc.) you are trying to configure The version number of the software

For end-hosts, servers, and automation nodes, you can download official cloud images (usually in .img or .qcow2 format) completely free:

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Your physical host or hypervisor (VMware Workstation, ESXi, Proxmox) does not have nested virtualization enabled.

Click on the node, choose your newly installed version from the dropdown menu, configure the desired CPU/RAM allocation, and click . Right-click the node on the canvas and click Start . 6. Troubleshooting Common QEMU Image Issues Issue 1: The Node Turns Blue, Then Immediately Shuts Down