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How to import a Juniper vSRX (and vMX) image

How-to4 min readUpdated July 2026

Juniper's virtual firewalls and routers - vSRX, vMX, vQFX and vJunos - ship as QEMU/KVM disk images (.qcow2 / .vmdk / .ova) and run as full virtual machines. That means the genuine Junos OS CLI, real security policies, MPLS, EVPN - not an approximation. This guide shows how to import a Juniper vSRX image into netplex. so it appears in your lab palette, ready to drag onto the canvas.

You bring your own licensed Junos image; netplex. does not ship Juniper images. Once you have the disk file, import takes about a minute and netplex. applies Juniper's recommended hardware for you.

1

Open the Library from the left navigation and select the QEMU/KVM tab - Juniper virtual devices are full VMs, so they live here alongside vIOS, ASAv and the other vendor VMs. Imported images are grouped by vendor, each with its brand badge.

Step 1: How to import a Juniper vSRX (and vMX) image
2

To add a new one, click Upload image and pick your Junos .qcow2 / .vmdk / .ova file - or use Import from URL to pull a multi-GB image straight onto the server. netplex. detects it as Juniper and applies the vendor-recommended hardware: a vSRX gets its 2 vCPU / 4 GB RAM and virtio NICs, so it boots correctly first time.

Step 2: How to import a Juniper vSRX (and vMX) image
3

Open any lab and the Juniper image is in the device palette on the left, with its badge and the QEMU runtime - filter for juniper to find it. Drag it onto the canvas, wire it up, and power on: the real Junos firmware boots to its console under KVM. First boot of a vSRX takes a few minutes while Junos initialises; after that the CLI is fully interactive.

Step 3: How to import a Juniper vSRX (and vMX) image

vSRX is the go-to for Junos security labs (zones, policies, IPsec, screen); vMX covers service-provider routing (MPLS, L3VPN, EVPN). Both are full VMs, so budget the RAM - mix them with lightweight IOL or container nodes where you do not need a full Juniper VM per device. All import through the same Library. See the related guides for importing Cisco IOL/IOU, Cisco IOS (Dynamips) and generic QEMU/qcow2 images.