To get the ( vqfx-20.2R1.10-re-qemu.qcow2 ) working correctly, you must pair it with its corresponding Packet Forwarding Engine (PFE) image. Unlike typical routers, the vQFX is a split-architecture virtual switch where the Routing Engine (RE) handles the control plane and the PFE handles the data plane. Core Components Required RE Image: vqfx-20.2R1.10-re-qemu.qcow2 .
Mount it (requires root + libguestfs-tools ):
Navigate to Edit -> Preferences -> Qemu VMs and click New . Naming: Name the VM vQFX-20.2R1-RE . RAM: Assign 1024 MB of RAM. vqfx202r110reqemuqcow2 work
is a virtualized version of the physical QFX10000 series Ethernet switch. It enables network engineers, data center architects, and students to emulate the control plane of a high‑performance QFX10000 switch entirely in software.
Virtualizing Juniper’s QFX data center switches requires a split-architecture layout. Unlike standard virtual machines, running this specific image standalone will result in a non-functional control plane that cannot pass traffic or recognize interfaces. Why vqfx202r110reqemuqcow2 Won't Work Alone To get the ( vqfx-20
This article provides a comprehensive, step-by-step guide to downloading, configuring, and booting the Juniper vQFX 20.2R1 RE image. 1. Prerequisites for Running vQFX 20.2R1
vqfx-20.2R1-2019010209-pfe-qemu.qcow (often bundled with the 20.2 download). Mount it (requires root + libguestfs-tools ): Navigate
If the PFE is not connecting, verify that you are using the correct virtio-net-pci NIC settings and that the em1 links are directly connected in your simulation software [Brezular's Blog]. If you'd like, I can provide: A for QEMU. Specific configuration commands to fix interface errors.
This command will display important details about the image, such as its virtual size, disk size (actual usage), and format.
Once the RE boots, you must define the management and internal communication.
KVM enabled on your host machine or in the GNS3/EVE-NG VM.