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parity error on ex4200

  • 1.  parity error on ex4200

    Posted 12-07-2020 12:00
    Hello,
    i have a ex4200 as a top of rack switch and i have faced parity error on it and here is the log :
    noc@R12> show log messages | match parity
    Nov 28 23:35:04 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Nov 29 01:39:18 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Nov 30 08:10:39 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Dec 5 00:40:56 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Dec 5 05:51:38 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Dec 5 07:32:33 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Dec 7 17:35:20 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE
    Dec 7 17:35:59 R12 /kernel: Buffer management parity error detected in mpfe0, value 0, re-init the PFE

    so i want to know can i ignore it and safely continue using it?its working for abour a year
    thank you.


  • 2.  RE: parity error on ex4200

     
    Posted 12-07-2020 14:41
    Hello,

    The parity error is seen many times on mpfe0 !!
    You can't ignore these logs, I advise you to be ready with a replacement switch or Proactively proceed with RMA. 

    This means that the memory on the PFE is failing and you need to avoid any service impact as long as these logs still reported by the switch.

    This Clearly described in the below KB
    https://kb.juniper.net/InfoCenter/index?page=content&id=KB18931&cat=T_SERIES&actp=LIST

    Regards,
    Bemwa



  • 3.  RE: parity error on ex4200

    Posted 12-07-2020 14:48
    Hello,
    so this mean the witch will stop working soon if i do not replace it ?


  • 4.  RE: parity error on ex4200

     
    Posted 12-07-2020 15:26

    Well, we Can't confirm this 100% but normally reoccurrence of such this Parity error for a long time may lead to crash the switch.
    That's why we advise to proactive proceed with RMA to avoid any unplanned service impact. 

    hopefully, this helps you
    Bemwa