vQFX 17.4R1.16 on EVE-NG (Professional and Community)

Hi all,

a couple of days the new vQFX came out in Version 17.4R1.16 – and you know me – of course it had to be “eved” πŸ˜‰
Here’s how I got it flying:


1.) Create a new folderstructure for your new vQFX:

2.) Move your files (extracted from vbox) to the new folders:

To get the vmdk you need to download the “Vagrant” Virtualbox-Files and extract them twice with 7zip to uncover the vmdk’s
You start with the .tgz, extract this, get a file without an extension and extract this again (all with 7zip)

3.) Convert the vmdk (PFE and RE) to qcow2-format:

And now you can spin-up your new vQFX17.1R1.16 under EVE-NG πŸ˜‰

Enjoy – if you have questions feel free to ask in the comment section below.

JunOS Service restart via cronjob

Some days ago we had trouble on one of our QFXes where the jdhcpd deamon would consume 100% CPU and “crash” – resulting in users not getting IP’s anymore.
While TAC is still investigating, I made a quick Workaround for this – the DHCP-Sheriff πŸ˜‰


This Script restarts the Service if the load of the Service is above 1% (adjustable) – this can be easily adopted to other services and thresholds.

1.) Login as root and in shell type: vi /var/tmp/dhcp-sheriff.sh

2.) Press “i” and paste the above lines, followed by “[Esc-Button]”. Save and Quit with :wq

chmod +x /var/tmp/dhcp-sheriff.sh

crontab -e
0 */8 * * * sh /var/tmp/dhcp-sheriff.sh (executes it every 8h)


crontab -l
0 */8 * * * sh /var/tmp/dhcp-sheriff.sh

6.) in cli check after job has finished to run via show log dhcp-sheriff.log


Feel free to use this to your advantage – hopefully this will be a workaround for you in urgent-times until a fix is released.
This is only a workaround – do not use this in production for a long time / use at your own risk.