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The vQFX requires a two-part virtual machine (VM) setup to function as a full switch:
(Points deducted for boot speed and high RAM requirements).
If you are deploying this in EVE-NG:
Use community-provided node definitions to import the images into CML 2.x.
vQFX sees these as ge-0/0/0 , ge-0/0/1 , etc. vqfx202r110reqemuqcow2
| | Cons | | :--- | :--- | | High Fidelity: Excellent for learning EVPN-VXLAN and Data Center fabrics. | Resource Heavy: Consumes significant RAM/CPU per node. | | Modern Code: Version 20.2 supports newer Junos features and ELS syntax. | Slow Boot: Takes 3-6 minutes to fully boot and pass traffic. | | ELS Support: Matches the syntax used on modern physical QFX devices. | Fragile: Prone to corruption if not shut down gracefully. | | Free Labbing: Allows testing expensive hardware architectures for free. | Data Plane Lag: The virtual PFE can sometimes lag behind the control plane. |
. The RE handles the "thinking" (routing tables, SSH access, API calls), while the PFE handles the "doing" (shoving bits through virtual interfaces). 4. Why Version 20.2 Matters The vQFX requires a two-part virtual machine (VM)
The vqfx202r110reqemuqcow2 image is While it is resource-intensive and slower to boot than other vendors' images, it remains the only viable way to simulate QFX EVPN-VXLAN topologies without purchasing physical hardware.