The file is a virtual disk image for the Routing Engine (RE) of a Juniper vQFX virtual switch. It is used in network simulation environments like GNS3 , Cisco Modeling Labs (CML) , and EVE-NG . Key Specifications Device Type: Virtual Juniper QFX10000 series switch.
Routing Engine (Control Plane). It must be paired with a separate Packet Forwarding Engine (PFE) image (e.g., vqfx-20.2R1-2019010209-pfe-qemu.qcow ) to function as a complete switch. Version: Junos OS 20.2R1.10. Vqfx-20.2r1.10-re-qemu.qcow2
A widely documented quirk of this specific evaluation image is that while the filename indicates version , the internal software often reports as 19.4R1.10 upon booting and running show version . Hostname: Defaults to vqfx-re . The file is a virtual disk image for
For stable operation in a virtual environment, follow these recommended resource allocations: Guide: Importing Juniper vMX and vQFX into CML2.4 Routing Engine (Control Plane)
This specifies the . QEMU (Quick Emulator) is the backend for KVM (Kernel-based Virtual Machine) on Linux. This file is not for VMware (VMDK) or Hyper-V (VHDX). It is native to open-source virtualization.
qemu-img info Vqfx-20.2r1.10-re-qemu.qcow2