The file is the Routing Engine (RE) disk image for Juniper Networks' virtual QFX (vQFX) switch, version 20.2R1.10. In a lab environment, the vQFX is split into two separate virtual machines: the RE, which handles the control plane, and a Packet Forwarding Engine (PFE) , which handles the data plane. Blog Post: Getting Started with vQFX 20.2R1.10
: Indicates Release 1 of that specific version. This suggests it is the first candidate or official release of the 202 build. vqfx202r110reqemuqcow2
Traditionally, learning networking required "heavy metal"—expensive, loud, and power-hungry physical switches. If you wanted to test a BGP configuration or a VXLAN EVPN fabric, you needed a rack of gear costing tens of thousands of dollars. vqfx202r110reqemuqcow2 vqfx-20
The .qcow2 extension is critical. It is the native disk format for QEMU/KVM and offers: Unique identifier: Could function as a database primary
The vqfx202r110reqemuqcow2 image and the corresponding PFE image. 2. Basic QEMU Command Example
The string refers to a specific virtual disk image file for the Juniper vQFX10000
: Indicates it is optimized for the QEMU open-source emulator.