The qcow2 image is not tied to a single platform. With a few adjustments, you can deploy the same exclusive RE image on:
Containerlab is a powerful tool for DevOps workflows, allowing you to run VM-based devices in containers.
topology: nodes: switch1: kind: vr-vqfx image: vrnetlab/vr-vqfx:20.2R1.10 mgmt-ipv4: 172.20.20.11 Use code with caution. Performance Optimization & Troubleshooting
Ensure the internal emulated connection (usually em1 on the RE to eth1 on the PFE) is mapped correctly, otherwise, the RE will continuously rewrite boot files trying to find its line cards, increasing disk lock collisions. To help you optimize your vQFX topology, let me know: vqfx202r110reqemuqcow2 exclusive
The RE communicates with the VFE via a dedicated, isolated internal network interface (typically mapped to em1 on the RE and eth1 on the VFE).
This image ( vqfx-20.2R1.10-re-qemu.qcow2 ) manages the control plane, including the Junos OS CLI, routing protocols, and system management.
: This indicates that the image is built and optimized to run on QEMU (Quick Emulator), a hosted virtual machine monitor that performs hardware virtualization. The qcow2 image is not tied to a single platform
Security modules on the Linux host (especially in Ubuntu-based EVE-NG or GNS3 setups) block the virtualization daemon from acquiring the necessary exclusive file descriptors. How to Fix the Error
The Juniper vQFX 20.2R1 (represented by the filename vqfx202r110reqemuqcow2 or similar variants) is a powerful, virtualized version of the Juniper Networks QFX10000 series switches. It is a critical tool for network engineers looking to emulate, simulate, and test complex data center fabrics without the need for physical hardware.
Create the directory: mkdir -p /opt/unetlab/addons/qemu/vqfxre-20.2R1.10/ : This indicates that the image is built
Download the . The filename typically resembles:
Handles the data plane, simulating the hardware ASICs.
Never just close your emulator. Run request system power-off from the Junos CLI and wait for the VM to stop.