Vqfx202r110reqemuqcow2 May 2026

vqfx202r110reqemuqcow2 is a QEMU QCOW2 disk image of a Juniper vQFX virtual switch, version 202 release 1, specifically packaged to run under the QEMU emulator. It is a critical tool for network professionals designing and testing data center switching fabrics in a virtual environment.

mkdir ~/vqfx
mv vqfx202r110reqemuqcow2 ~/vqfx/
cd ~/vqfx

For comparison, official Juniper vQFX images look like:

The presence of reqemu suggests a non‑standard build, possibly from a training lab or automation script. vqfx202r110reqemuqcow2

sudo apt update && sudo apt install qemu-kvm libvirt-daemon-system virt-manager bridge-utils -y

Edit XML with virsh edit vqfx1 and add:

<interface type='network'>
  <source network='default'/>
  <model type='virtio'/>
  <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</interface>

Repeat slot 0x07, 0x08 for additional ports. vqfx202r110reqemuqcow2 is a QEMU QCOW2 disk image of

vQFX sees these as ge-0/0/0, ge-0/0/1, etc.

Taken together, vqfx202r110reqemuqcow2 most likely denotes a QEMU-compatible QCOW2 disk image for a Juniper vQFX virtual switch, specifically a 20.2R1.10 release or build prepared for emulation under QEMU/KVM environments. System administrators and network engineers would use such an image to spin up virtual Juniper routing/switching instances for lab testing, feature evaluation, or CI/CD network function testing. For comparison, official Juniper vQFX images look like:

virt-install \
  --name vqfx-lab \
  --vcpus 2 \
  --memory 4096 \
  --disk path=/var/lib/libvirt/images/vqfx202r110reqemuqcow2,format=qcow2 \
  --import \
  --os-variant generic \
  --network network=default

set interfaces em0 unit 0 family inet address 192.168.122.50/24
set routing-options static route 0.0.0.0/0 next-hop 192.168.122.1
commit

em0 is the management interface (virtio).