Upon first boot, the system requires an initial configuration to enable interfaces and set the root password.
For advanced users interested in integrating vQFX into a modern, containerized lab environment, is a popular tool. It uses a modified version of vrnetlab to package the QEMU VMs (like our .qcow2 file) into a Docker container. This allows the vQFX to be orchestrated and managed like a container, bringing many benefits for automated testing and CI/CD pipelines.
The challenge is that the raw qcow2 downloaded from Juniper’s website rarely “just works” on standard QEMU/KVM. It requires specific XML tuning and often a disk conversion.
This is useful if you have a .vmdk (VMware) image and need to use it in a QEMU environment. The -f flag specifies the original format, and -O specifies the target format. vqfx202r110reqemuqcow2 work
To successfully boot and use this image, follow these integration steps: Pair with the PFE : A vQFX setup requires two nodes. While your file is the RE (Control Plane) , you also need the corresponding vqfx-20.2R1.10-pfe-qemu.qcow2 Data Plane ) for traffic to actually flow. Resource Allocation RE (Your file) : Assign at least : Assign at least Connectivity : In your simulator (like EVE-NG), you must connect the interface of the RE to the
user wants a long article about "vqfx202r110reqemuqcow2 work". I need to interpret this keyword. It seems to be a specific file name: "vqfx202r110reqemuqcow2". This likely refers to a QEMU QCOW2 image file for Juniper vQFX virtual switch, specifically version 20.2R1.10. The "reqemuqcow2" part might be a concatenation or abbreviation. I need to search for information about vQFX, QEMU, and QCOW2 images. I'll start with a broad search and then refine. search results show some relevant links. Result 0 from the first search might be about a vQFX start problem. Result 0 from the second search is a general article about QEMU images. Result 0 from the third search is about containerlab and Juniper vQFX. Result 0 from the fourth search is a directory listing containing "vqfx-20.2R1.10-re-qemu.qcow2". That looks promising. I'll open that directory listing, along with the containerlab page, the GNS3 guide, and the EVE-NG thread. directory listing shows "vqfx-20.2R1.10-re-qemu.qcow2". That's likely the exact file. The containerlab page has a warning about version mismatch. The GNS3 guide provides step-by-step instructions. The EVE-NG thread discusses start problems. I need to gather more information about the file, its use in QEMU/KVM, and common issues. I'll search for "vqfx-20.2R1.10-re-qemu.qcow2" specifically.'ll open result 2, the gist about vqfx10k on KVM/QEMU, and result 0, the guide for importing into CML2.4, and result 1, the Containerlab post. have gathered enough information to write a long article. The article will cover the breakdown of the filename, the relationship between vQFX, QEMU, and qcow2, setting up vQFX in lab environments like GNS3, EVE-NG, and containerlab, common issues and troubleshooting, and essential QEMU commands. I will also reference some general resources about QCOW2 format. I'll structure the article with an introduction, sections on each topic, and a conclusion. I'll cite the relevant sources. filename is an official Juniper Networks virtual machine disk image , tailored specifically for running their vQFX (virtual QFX Series Switch) platform within a QEMU/KVM virtualization environment. This file is for the virtualized Routing Engine (RE) of the Juniper vQFX 10K switch, enabling large-scale network simulations, testing, and training without physical hardware.
Add <memoryBacking><hugepages/></memoryBacking> to the domain XML. Upon first boot, the system requires an initial
:
interface of the PFE. This internal link allows the "brain" (RE) to talk to the "muscle" (PFE). Management Access interface on the RE for SSH/Telnet management. Virtualization Settings Nested Virtualization
<domain type='kvm'> <name>vqfx-re-20.2R1.10</name> <memory unit='GiB'>4</memory> <currentMemory unit='GiB'>2</currentMemory> <vcpu placement='static'>2</vcpu> <os> <type arch='x86_64' machine='pc-q35-6.2'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> </features> <cpu mode='host-passthrough' check='none'> <feature policy='require' name='vmx'/> </cpu> <devices> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none' io='native'/> <source file='/var/lib/libvirt/images/vqfx202r110re.qcow2'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </disk> <!-- Network interfaces: em0 = fxp0 (management) --> <interface type='bridge'> <mac address='52:54:00:aa:bb:cc'/> <source bridge='br0'/> <model type='e1000'/> <target dev='vnet0'/> <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </interface> <!-- Console serial --> <serial type='pty'> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> </serial> <console type='pty'> <target type='serial' port='0'/> </console> </devices> </domain> This allows the vQFX to be orchestrated and
Upload the vqfx202r110reqemuqcow2 file to that newly created directory using an SFTP client. Once uploaded, EVE-NG requires the primary hard drive to be named hda.qcow2 . Rename it using the following command:
qemu-img create -f qcow2 my-disk.qcow2 10G