qemu-img convert -f vmdk -O qcow2 input.vmdk virtioa.qcow2 rm input.vmdk Use code with caution. Crucial Step: Fixing Permissions
Depending on your image type, move the files to the following paths: /opt/unetlab/addons/qemu/ For IOL Images: /opt/unetlab/addons/iol/bin/ For Dynamips Images: /opt/unetlab/addons/dynamips/ Step 3: Use the Strict Naming Convention
Building your own EVE-NG lab requires an initial investment of time in tracking down and installing the necessary node images. By utilizing official vendor sites or community repositories, you can download all EVE-NG images and build a high-performance simulation environment in 2026.
: Some network operating systems are free to download and use legally, such as Arista vEOS , and various Linux distributions like Direct Download & Collection Services
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Add the node, connect your cables, right-click the device, and click .
Transfer your downloaded image into this newly created folder via SFTP.
Run the following command from your server's SSH command line: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Use code with caution.
VyOS website (completely free and legal). qemu-img convert -f vmdk -O qcow2 input
Highly lightweight, running Cisco IOS as a native Linux process.
A Palo Alto image must be in a folder starting with paloalto- . Step 3: Fix Permissions
EVE-NG strictly relies on explicit, lowercase naming conventions for folder prefixes. If the folder name is wrong, EVE-NG will not recognize the node.
Dynamips is an older emulator that runs legacy Cisco IOS images extracted from physical hardware. It is largely deprecated and inefficient compared to QEMU and IOL, but it is still supported for older, specific lab scenarios. Cisco 7200, 3725, and 2600 series routers. Where to Legally Download EVE-NG Images : Some network operating systems are free to
Many users find that searching platforms like or community forums provides guides on how to extract QCOW2 files from vendor-provided virtual appliance images. 3. PnetLab Images Repository
Many engineers share pre-configured images or download links on platforms like GitHub, Mega, or Google Drive.
If you are running EVE-NG on VMware Workstation, ensure that Intel VT-x / AMD-V is enabled in the settings of the EVE-NG VM itself.
mv /opt/unetlab/addons/qemu/viros-adventerprisek9-m.vios-up28-ext.20171024/vios-image.qcow2 /opt/unetlab/addons/qemu/viros-adventerprisek9-m.vios-up28-ext.20171024/virtioa.qcow2 Use code with caution. Step 5: Convert Formats (If Necessary)