Handled by vqfx-20.2R1.10-re-qemu.qcow2 . This acts as the brain of the switch. It processes control plane traffic, hosts the Junos CLI, calculates routing tables, and manages routing protocols (such as OSPF, BGP, and EVPN).
| | Cons | | :--- | :--- | | High Fidelity: Runs real Junos code, not a simulation. | Resource Heavy: Requires significant RAM and CPU per node. | | EVPN-VXLAN Support: excellent for Data Center labs. | Slow Boot: Takes several minutes to become "ready." | | qcow2 Format: Easy to deploy in KVM, EVE-NG, and GNS3. | Dataplane Limits: Not suitable for throughput testing. | | Free Labbing: Great for certification prep (JNCIP/JNCIE). | No Physical Ports: You cannot connect physical cables to it (obviously). |
This image acts as a vital tool for network engineers, automation developers, and architects who need to simulate a high-performance datacenter environment without deploying physical hardware. The Architecture of Juniper vQFX vqfx202r110reqemuqcow2
When you deploy a , you need both the RE VM and the PFE VM connected together via a virtual link (typically em1 interface on both VMs). The PFE image is typically named with the pattern vqfx-20.2R1-2019010209-pfe-qemu.qcow .
: To fully simulate a switch, the vQFX typically requires two separate virtual machines: the Routing Engine (RE) Packet Forwarding Engine (PFE) Connectivity Handled by vqfx-20
The vQFX mimics the performance and feature set of physical QFX10000 high-performance data center switches. It allows network architects, DevOps teams, and automation engineers to test complex BGP EVPN/VXLAN fabrics, validate Junos configurations, and build automation pipelines entirely in a virtualized environment. Architectural Overview: The Split-VM Design
Run the following command to ensure EVE-NG recognizes the images: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Use code with caution. 5. Launch in EVE-NG Add a new node to your lab and select . Select the 20.2R1.10 version 5.2.1. | | Cons | | :--- | :---
When downloading and setting up this virtual appliance for open-source emulators like QEMU, KVM, GNS3, or Eve-NG, you will often encounter a specific, cryptic filename: .
Upload vqfx202r110reqemuqcow2 into that directory. EVE-NG expects the primary hard drive to be named virtioa.qcow2 . Rename it using the CLI:
The filename vqfx-20.2R1.10-re-qemu.qcow2 refers to the Routing Engine (RE)
: This happens if the PFE VM is not running or if the internal bridge linking the RE and PFE is misconfigured. Ensure the second interface of the RE is bound to the exact same virtual switch/bridge as the first interface of the PFE.