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SRX5400 OS path selection for upgrade

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  • 1.  SRX5400 OS path selection for upgrade

    Posted 05-08-2020 19:24

    Hi, 

     

    Currently, SRX5400 (SRX5k RE-1800X4) is running with 15.1X49-D110.4 built 2017-09-08. 

     

    I have looked at the latest recommended version at https://kb.juniper.net/InfoCenter/index?page=content&id=kb21476

     

    It says - 18.4R3-S2 service release is recommended for SRX5400 (SRX5k RE-1800X4).

     

    Is it okay to upgrade directly from 15.1X49-D110.4 to 18.4R3-S2 for SRX5400 (SRX5k RE-1800X4)?

     

    Thanks.



  • 2.  RE: SRX5400 OS path selection for upgrade
    Best Answer

     
    Posted 05-08-2020 20:26

    Hi,

     

    I don't think you will be able to perform a direct ugrade from 15.1X49-D110.4 to 18.4R3-S2. You are expected to see an error "unsupported h/w" if you try the upgrade.

     

    Even as per the KB link you mentioned in the post, you can upgrade the box from 15.1X49-D110.4 to 18.2R3 or 18.2R3 based Service Releases directly and from there you can upgrade to 18.4R3-S2 without any issues.

     

    So please follow the step upgrade and you should not see any issues: 

    15.1X49-D110.4 ---> 18.2R3 or 18.2R3 based Service Releases ----> 18.4R3-S2.

     

    Hope this helps.

     

    Thanks and Regards,

    Pradeep Kumar M

     

    || If this solves your problem, please mark this post as "Accepted Solution" so we can help others too ||



  • 3.  RE: SRX5400 OS path selection for upgrade

    Posted 05-08-2020 21:12

    Thanks, Pradkm.

     

    I can see the below note in KB (https://kb.juniper.net/InfoCenter/index?page=content&id=kb21476😞

     

    Notes for upgrading from Junos 15.1X49 releases to 18.2R3 or 18.2R3 based Service Releases:

    • Junos OS upgrade from 15.1X49 directly to 18.2R3 or 18.2R3 based Service Releases is supported for all SRX platforms, except vSRX. To upgrade vSRX from 15.1X49 to higher versions, deploy a new vSRX VM.

     

    So, I guess there should be no any base OS requirements from 18.2R3 to 18.4R3-S2?

     

    Regards.



  • 4.  RE: SRX5400 OS path selection for upgrade

     
    Posted 05-08-2020 23:27

    Thats true. You can directly upgrade from 18.2R3 to 18.4R3-S2. No issues.

     

    As mentioned earlier, follow this: 15.1X49-D110.4 ---> 18.2R3 or 18.2R3 based Service Releases ----> 18.4R3-S2.

     

    Thanks and Regards,

    Pradeep Kumar M

     

    || If this solves your problem, please mark this post as "Accepted Solution" so we can help others too ||



  • 5.  RE: SRX5400 OS path selection for upgrade

    Posted 05-17-2020 03:55

    Thanks, Pradkm. 

     

    Regards.