Fixed — Vqfx-20.2r1.10-re-qemu.qcow2

Network simulation is critical for validating architectures before production deployment. The Juniper vQFX virtual switch allows engineers to test Junos OS features without physical hardware. This guide covers how to deploy the specific Routing Engine image vqfx-20.2r1.10-re-qemu.qcow2 inside virtual lab environments like GNS3, EVE-NG, and native KVM. Understanding the Architecture of vQFX

Power on the PFE node first, wait roughly 60 seconds, and then power on the RE node. This sequence ensures that when the Junos kernel boots up on the RE, the simulated ASIC listener is already alive and ready to register interfaces. Once successfully paired, log into the RE CLI and execute: show interfaces terse Use code with caution. Vqfx-20.2r1.10-re-qemu.qcow2

Juniper provides vQFX free of charge to its customers and partners, making it a key tool for various purposes: Understanding the Architecture of vQFX Power on the