To get this specific image working, you must pair it with a compatible PFE image (typically named something like vqfx-pfe-qemu.qcow cosim.qcow2
Create the target directory: /opt/unetlab/addons/qemu/vqfxre-20.2R1.10/ Upload the file and rename it exactly to virtioa.qcow2 .
: Increase the number of NICs to 12. Unlike other Juniper virtual devices (like vMX), you connect external topology devices directly to the VM in vQFX. brezular.com 2. EVE-NG / PNETLab Configuration Directory Naming : Place the RE image in a folder named followed by the version (e.g., /opt/unetlab/addons/qemu/vqfxre-20.2R1.10/ File Renaming : Rename the virtioa.qcow2 so the emulator can boot it. Fix Permissions : Always run the fix permissions command after uploading: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Initial Access & Common Issues Juniper vQFX - - EVE-NG vqfx202r110reqemuqcow2 work
To deploy this image successfully, the host system requires the following resources per vQFX instance:
Ansible playbooks can automatically generate configurations for Juniper devices deployed in EVPN/VXLAN fabrics. Similarly, can configure vQFX at scale with state files. To get this specific image working, you must
<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>
Inject a script into the vQFX VM via qcow2 embedded ISO or virt-customize: brezular
He sighed. The lab’s physical switches were already racked and cabled for the new data center simulation, but the budget had been cut. Again. No hardware meant he had to build the entire spine-leaf topology in software.
If you are studying for the or JNCIE , the vqfx202r110 RE image is an essential tool. It is far more capable than the lighter vmx images for switching-specific features like spanning-tree and VXLAN. It is a "workhorse" image that, once configured correctly, provides a high-fidelity sandbox. If you'd like to dive deeper into the setup, tell me: Which topology are you trying to build?
Check: