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5406Rzl2 upgrades - minimal downtime

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  • 1.  5406Rzl2 upgrades - minimal downtime

    Posted Jul 24, 2019 03:37 PM

    Hello airheads,

     

    Our core switches are 5406Rzl2 each with dual management modules. I was under the impression that I could upgrade the code (using some mix of redundancy and other features) with minimal downtime. Around the Internet, I've seen various ramblings of things tried but never any definite yes or no. Is there a way to accomplish this?


    #5400


  • 2.  RE: 5406Rzl2 upgrades - minimal downtime
    Best Answer

    EMPLOYEE
    Posted Jul 25, 2019 11:11 AM

    Greetings!

     

    The 5400R has dual management modules for redundancy (if one MM fails, the second takes over instantaneously), which can also be used to perform switch software upgrades with reduced downtime by loading a new software image, booting the standby MM onto the new version, then performing a redundancy switchover to swap to the standby MM. 

     

    If you have a pair of 5400Rs stacked using VSF (front plane stacking), the VSF Fast Software Upgrade feature uses an automated sequenced reboot process to minimize downtime for devices with redundant links (at least one link per VSF member chassis). 



  • 3.  RE: 5406Rzl2 upgrades - minimal downtime

    Posted Jul 26, 2019 10:31 PM
      |   view attached

    hi

     

    see attachment

     

    Thanks

     

     

    Attachment(s)



  • 4.  RE: 5406Rzl2 upgrades - minimal downtime

    Posted Aug 01, 2019 11:18 AM

    I'm hoping to try this during our maintenance window next week, but according to TAC...

     

    #copy sftp flash user ftpuser ftp.server.ip KB_16_08_0003.swi secondary 

    #boot set-default flash primary 

    #write memory 

    #boot standby 

    #show redundancy (wait for sync) 

    #redundancy switchover 

     

    ...will upgrade with very little to no downtime. In their lab, there were no pings dropped. I'll add my results next week.



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