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QFX5120-48Y, fans blink amber but no alarms

  • 1.  QFX5120-48Y, fans blink amber but no alarms

    Posted 12-10-2020 10:13
    A customer has two new QFX5120-48Y switches and in both, the LEDs in the fans blink amber. Looking in the CLI, I see no alarms (system or chassis) and fan speeds seem reasonable. Is this perhaps a bug in Junos 20.2R2 (recommended release)? Could I please bother someone with the same hardware to go check the LEDs to see if they behave the same way? One fan module was re-seated with no change in behavior. Both fans and PSUs are AFO type so air flow direction should be OK.

    Model: qfx5120-48y-8c
    Junos: 20.2R2.11

    me@QFX5120-0# run show system alarms
    No alarms currently active

    me@QFX5120-0# run show chassis alarms
    No alarms currently active

    me@QFX5120-0# run show chassis environment
    Class Item Status Measurement
    Power FPC 0 Power Supply 0 OK 46 degrees C / 114 degrees F
    FPC 0 Power Supply 1 OK 45 degrees C / 113 degrees F
    Temp FPC 0 Sensor FrontLeft 2 In OK 23 degrees C / 73 degrees F
    FPC 0 Sensor Center OK 29 degrees C / 84 degrees F
    FPC 0 Sensor FrontLeft 3 In OK 24 degrees C / 75 degrees F
    FPC 0 Sensor Frontleft 1 In OK 23 degrees C / 73 degrees F
    FPC 0 Sensor RearLeft Ex OK 24 degrees C / 75 degrees F
    FPC 0 Sensor RearMiddle Ex OK 28 degrees C / 82 degrees F
    FPC 0 Sensor CPU Die Temp OK 37 degrees C / 98 degrees F
    FPC 0 Sensor RearRight Ex OK 26 degrees C / 78 degrees F
    FPC 0 Sensor FrontRight 1 In OK 23 degrees C / 73 degrees F
    FPC 0 Sensor FrontRight 2 In OK 24 degrees C / 75 degrees F
    FPC 0 Sensor FrontMiddle 1 In OK 28 degrees C / 82 degrees F
    FPC 0 Sensor FrontMiddle 2 In OK 28 degrees C / 82 degrees F
    FPC 0 Sensor PFE Die Temp OK 39 degrees C / 102 degrees F
    Fans FPC 0 Fan Tray 0 Fan 0 OK Spinning at normal speed
    FPC 0 Fan Tray 0 Fan 1 OK Spinning at normal speed
    FPC 0 Fan Tray 1 Fan 0 OK Spinning at normal speed
    FPC 0 Fan Tray 1 Fan 1 OK Spinning at normal speed
    FPC 0 Fan Tray 2 Fan 0 OK Spinning at normal speed
    FPC 0 Fan Tray 2 Fan 1 OK Spinning at normal speed
    FPC 0 Fan Tray 3 Fan 0 OK Spinning at normal speed
    FPC 0 Fan Tray 3 Fan 1 OK Spinning at normal speed
    FPC 0 Fan Tray 4 Fan 0 OK Spinning at normal speed
    FPC 0 Fan Tray 4 Fan 1 OK Spinning at normal speed

    me@QFX5120-0# run show chassis led
    LED status for: FPC 0
    -----------------------------------
    LEDs status:
    Alarm LED : Off
    Beacon LED: Off
    System LED: Green
    Master LED: Green

    Interface STATUS LED
    -------------------------------------
    xe-0/0/1 Green Blinking
    xe-0/0/2 Green Blinking
    et-0/0/48 Green

    Power Supply 0 REV 04 740-043886 1GA4A249292 JPSU-650W-DC-AFO
    Power Supply 1 REV 04 740-043886 1GA4A241993 JPSU-650W-DC-AFO
    Fan Tray 0 fan-ctrl-0 0, Front to Back Airflow - AFO
    Fan Tray 1 fan-ctrl-0 1, Front to Back Airflow - AFO
    Fan Tray 2 fan-ctrl-1 2, Front to Back Airflow - AFO
    Fan Tray 3 fan-ctrl-1 3, Front to Back Airflow - AFO
    Fan Tray 4 fan-ctrl-2 4, Front to Back Airflow - AFO

    /Fredrik


  • 2.  RE: QFX5120-48Y, fans blink amber but no alarms

     
    Posted 12-10-2020 14:17
    Hi fb35523,

    Yes, this is a known issue right now, so far I have seen it on QFX5120 and EX4650 that use same chipset, however no PR has been released yet. Once the PR is released I can post it here.

    Regards,
    Jeff


  • 3.  RE: QFX5120-48Y, fans blink amber but no alarms

    Posted 12-11-2020 04:48
    Thanks a lot for the reply, Jeff! Please notify me if you see the PR. I searched but can't find anything, just as you said.

    My Juniper SEs tell me that the QFX5120-48Y-8C and the EX4650 is the exact same hardware actually, not just the chipsets. I guess they program some EPROM or similar with the model number and sell them as different models and somewhat different feature sets.


  • 4.  RE: QFX5120-48Y, fans blink amber but no alarms

    Posted 12-11-2020 12:21
    Test.

    Elvin


  • 5.  RE: QFX5120-48Y, fans blink amber but no alarms

     
    Posted 02-18-2021 18:00
    Hi fb35523,

    PR has been already release, please check below link,
    https://prsearch.juniper.net/InfoCenter/index?page=prcontent&id=PR1558407

    Hope this works for you, please mark as "Best Answer" if it did.

    Regards,
    Jeff