Junos OS

Expand all | Collapse all

upgrade path for a qfx5200 running 15.1X53-D30.5

Jump to Best Answer
  • 1.  upgrade path for a qfx5200 running 15.1X53-D30.5

    Posted 03-14-2019 14:40

    I'd like to upgrade OS to latest version. Don't think I can go from 15.1X53-D30.5 to Junos 18.4 in one jump. Can anyone suggest an upgrade path for me?


  • 2.  RE: upgrade path for a qfx5200 running 15.1X53-D30.5
    Best Answer

    Posted 03-14-2019 21:30

    Hi Ed,


    Documentation and best practice says we shouldn't skip more than 3 Junos releases except if we're hopping EEOL releases.  As of now, we could upgrade directly up to 17.4:



    Beyond that, it's better to follow the best practice to not hop more than 3 Junos releases.  So i'd suggest the safest way forward:

    15.1X53 ---- > 17.4 ----> 18.3 ----> 18.4


    If you have an option of USB install, a format install will work directly.  But will need to rebuild the configuration.  If USB is an option, then it might be best if you upgrade one device with step upgrades and ensure its smooth with config updated and use it to get your 18.4 config template.  Then upgrade the rest with USB, and use the config template (18.4).  Just a thought! 


    Hope this helps.




    If this solves your problem, please mark this post as "Accepted Solution."
    Kudos are always appreciated :).