Unlike standard virtual routers (like vMX or vSRX), the vQFX architecture is split into two distinct components. The file name usually indicates this is the component.
: vQFX usually comes with a trial period. For lab use, "Evaluation" mode is standard, though some advanced features may require a license. QEMU Version QEMU 2.4.0 or higher for the best stability with Junos 20.x images.
Would you like a ready-to-run libvirt domain XML or containerlab topology file for this setup? vqfx202r110reqemuqcow2 work
: Virtualized QFX Series switch, simulating Juniper's high-performance datacenter hardware.
Testing complex BGP confederations or EVPN-VXLAN fabrics without physical hardware. Unlike standard virtual routers (like vMX or vSRX),
qemu-system-x86_64 -machine pc -cpu host -smp 2 -m 4096 \ -drive file=vqfx202-lab1.qcow2,if=ide,index=1,media=disk \ -device virtio-net-pci,netdev=leaf1_int ...
: In EVE-NG, ensure the folder is named correctly (e.g., vqfxre-20.2R1.10 ) and the file is renamed to virtioa.qcow2 for the emulator to recognize it. For lab use, "Evaluation" mode is standard, though
Cisco Modeling Labs (CML) also supports third-party images like this one.
For the node to function, the RE image must link cleanly to the PFE image using an internal virtual link. If they fail to communicate, the Junos CLI will boot up, but none of your physical-facing network interfaces will activate. Guide: Importing Juniper vMX and vQFX into CML2.4