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SRX1500 - Upgrade Junos: 15.1X49-D60.7 to 18.4R3

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  • 1.  SRX1500 - Upgrade Junos: 15.1X49-D60.7 to 18.4R3

    Posted 09-22-2020 07:10

    Is it possible to upgrade directly from Junos: 15.1X49-D60.7 to 18.4R3 or does it need to be step upgraded?



  • 2.  RE: SRX1500 - Upgrade Junos: 15.1X49-D60.7 to 18.4R3

     
    Posted 09-22-2020 07:20

    Yes it is.

     

    "You can skip no more than two releases when upgrading (or downgrading). That means you can upgrade only to one of the three releases subsequent to your current release. If you want to upgrade across more releases than this, you need to perform multiple upgrades."

     

    Valid SRX1500 versions:

    15.1X49

    17.x

    18.x

    19.x

    20.x

     

    https://www.juniper.net/documentation/en_US/junos/topics/topic-map/upgrading-and-downgrading-to-upgraded-bsd.html 



  • 3.  RE: SRX1500 - Upgrade Junos: 15.1X49-D60.7 to 18.4R3
    Best Answer

    Posted 09-22-2020 12:39

    You can go direct.... but ISSU is not supported when going from 15.1X49-DX to new major releases.

     

    From https://kb.juniper.net/InfoCenter/index?page=content&id=KB21476:

     

    Notes for upgrading from Junos 15.1X49 releases to 18.4R3 or 18.4R3 based Service Releases:

    • Junos OS upgrade from 15.1X49 directly to 18.4R3 or 18.4R3 based Service Releases is supported for all SRX platforms.

    • ISSU is not supported when upgrading from Junos 15.1X49 to higher versions.