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vJunos-Evolved routers in EVE-NG

Pick vJunos-Evolved from Add Node in your CloudLabBox workspace, with builds from 23.1 to 24.4. Use it to learn Junos OS Evolved, the Linux-based Junos that runs Juniper's PTX routers.

Choose a planCheck it in the free demo

Vendor
Juniper
In Add Node
8 images
Templates
vjunosevolved vjunosevoefi vjunosevo vjunosevolegacy
Newest
vjunosevolved-23.2R2.21

Installed versions

Every vJunos-Evolved name in the Add Node image list, exactly as you’ll pick it.

Started in our checksEach links to the tested tip below.

Template vjunosevolved

vJunos-Evolved

4 images on this template. Newest first.

  • vjunosevolved-23.2R2.21Started in our checks
  • vjunosevolved-23.2R1-S1.8
  • vjunosevolved-23.2R1.15
  • vjunosevolved-23.1R1.8

Template vjunosevoefi

vJunos-Evolved (UEFI template)

2 images on this template. Newest first.

  • vjunosevoefi-24.4R1.8
  • vjunosevoefi-24.2R1-S2.4

Template vjunosevo

vJunos-Evolved (vEVO template)

1 image on this template.

  • vjunosevo-23.4R2-S2.1

Template vjunosevolegacy

vJunos-Evolved 23.1 (legacy template)

1 image on this template.

  • vjunosevolegacy-23.1R1.8-bundled

Add it to a lab

In Add Node, choose the template, then the image. The template fills in these settings; change them before you start the node.

Add Node defaults for vJunos-Evolved, read from the EVE-NG templates on 28 October 2026
ImageTemplateCPURAMInterfacesConsole
vJunos-Evolvedvjunosevolved48192 MB13 interfaces: re0:mgmt-0, then et-0/0/0 to et-0/0/11telnet
vJunos-Evolved (UEFI template)vjunosevoefi48192 MB13 interfaces: re0:mgmt-0, then et-0/0/0 to et-0/0/11telnet
vJunos-Evolved (vEVO template)vjunosevo48192 MB17 interfaces: re0:mgmt-0, pfe1, rpio2, rpio3, pfe4, then et-0/0/0 to et-0/0/11telnet
vJunos-Evolved 23.1 (legacy template)vjunosevolegacy48192 MB17 interfaces: re0:mgmt-0, pfe1, rpio2, rpio3, pfe4, then et-0/0/0 to et-0/0/11telnet

EVE-NG admits a node by the CPU and RAM set on it, so a running node counts against your plan at these values. The largest of these templates starts nodes at 4 vCPU and 8,192 MB, which fits the free demo’s 6 vCPU and 8 GB, so you can start one there and open its console.

See default usernames and passwords Read every node tip

IS-IS and BGP between two Evolved routers

Link two vJunos-Evolved routers on their et-0/0/ ports, run IS-IS as the underlay and iBGP between their loopbacks, and compare the result with what you know from classic Junos.

Each template lists only its own images: vjunosevolved the 23.1 and 23.2 builds, vjunosevoefi the 24.x builds, vjunosevo the 23.4 build and vjunosevolegacy the bundled 23.1 build.

  • 2×vJunos-Evolved vjunosevolved4 vCPU, 8192 MB each

Added with these defaults, the lab uses 8 vCPU and 16 GB of RAM. The smallest plan that fits is Professional, with 18 vCPU and 32 GB: £7.50 a day, or £2 an hour On-Demand.

Choose a planGive nodes more CPU or RAM and you add that instead.

Licences are yours to bring

CloudLabBox doesn't provide Juniper licences. If your exercise depends on a licensed Junos OS Evolved feature, bring your own licence or a Juniper evaluation.

The images run only inside your CloudLabBox workspace; they aren’t available to download.

Questions about vJunos-Evolved

What is Juniper vJunos-Evolved?

vJunos-Evolved runs Junos OS Evolved, the Linux-based Junos of Juniper's PTX routers, as a single virtual machine.

Which interface is management on vJunos-Evolved?

The first one, re0:mgmt-0. On the vjunosevolved and vjunosevoefi templates the data ports follow as et-0/0/0 to et-0/0/11.

How is vJunos-Evolved different from vJunos-router?

vJunos-router runs classic Junos as an MX; vJunos-Evolved runs Junos OS Evolved, and the tested image reported model ptx10001-36mr. Its templates add 4 vCPU and 8192 MB, against 4 vCPU and 6144 MB for vJunos-router.

Juniper: how do I access vJunos Evolved?

vjunosevolved-23.2R2.21 passed console login and show version checks, reporting model ptx10001-36mr. On a clean image, log in as root with a blank password and enter cli to open the Junos CLI. Set your own password during initial configuration. Existing configured labs retain their own credentials.

From the node tips, updated 9 October 2026.

Juniper: does legacy vJunos Evolved 23.1 use the same wiring as 23.2?

No. Select vjunosevolegacy-23.1R1.8-bundled with the vjunosevolegacy profile: 4 vCPUs, 8 GB RAM and 17 adapters. Connect pfe1 to pfe4 on one isolated lab network, and rpio2 to rpio3 on a separate isolated network. Keep both links private to that node. Do not substitute the newer 23.2 interface layout; the legacy image's runtime and forwarding checks are separate.

From the node tips, updated 9 October 2026.

Which vJunos-Evolved images are installed?

8 images (4 vJunos-Evolved, 2 vJunos-Evolved (UEFI template), 1 vJunos-Evolved (vEVO template), 1 vJunos-Evolved 23.1 (legacy template)), all listed on this page exactly as Add Node shows them. The newest is vjunosevolved-23.2R2.21.

How much CPU and RAM does a vJunos-Evolved node use?

When you add one, the vjunosevolved template adds 4 vCPU and 8192 MB of RAM; the vjunosevoefi template adds 4 vCPU and 8192 MB of RAM; the vjunosevo template adds 4 vCPU and 8192 MB of RAM; the vjunosevolegacy template adds 4 vCPU and 8192 MB of RAM. You can change both in Add Node, and your plan counts what each running node is set to.

More images

CloudLabBox is independent of the vendors named on this page. Their names identify the images in the workspace’s Add Node list.