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Logs messages on MX104

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  • 1.  Logs messages on MX104

    Posted 12-12-2017 17:39


    I have MX104 running 15.1R6.7 (recommanded version)

    I have following log messages:

    afeb0  mic_periodic : fpc 0 mic slot 3 phy interrupt count  2

    Is some one knows what can be the meaning ?



    Best regards,


  • 2.  RE: Logs messages on MX104

    Posted 12-12-2017 18:14

    The device is already running on 15.1R6 release which has a fix to prevent the FPC might crash and restart when non-Juniper SFP is used in MIC-3D-20GE-SFP-E or MIC-3D-20GE-SFP-EH because of the ISR 2 (MIC error interrupt) might be running off over 2.5 second due to unknown reason.


    Although the following message with severity ERROR will be reported every pic periodic time if interrupt count is non-zero. These messages are harmless and does not points to any hardware issue and can be ignored.




    These messages are harmless and can be ignored. But If you want to prevent certain syslog messages from being written to the log file , please refer the below KB link



  • 3.  RE: Logs messages on MX104
    Best Answer

    Posted 12-22-2017 01:36

    Hi Folks,

    We may have to upgrade the Junos of the box with the fix for PR1270420; since 15.1R6.7 is exposed to the below PR. Since there is a probability of MIC reboot when hitting the same.


    Resolved In: 15.1R6-S1 15.1R7 16.1R5 16.2R2 16.2R3


    On MIC-3D-20GE-SFP-E and MIC-3D-20GE-SFP-EH, an interrupt threshold was introduced, if MIC error interrupts are more than the threshold (> 2500 per 5min), the MIC will be restarted. Due to that change, MIC error interrupts will hog the CPU when restart is initiated. PR1270420