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  • 1.  Mx204 fpc down Command aborted, Host Chassis manager connection not stable

    Posted 02-11-2023 19:34

    Hello,

    Suddenly mx204 went down and giving error

    show chassis fpc detail
    Slot 0 information:
      State                               Present
      Total CPU DRAM                    0 MB
      Total SRAM                        0 MB
      Total SDRAM                       0 MB
      Temperature                      Testing

    show chassis fpc errors
    FPC Scope    Category   Level Occurred Cleared Threshold Action-Taken Action
      0 board    functional Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 memory     Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 io         Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 storage    Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 switch     Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 processing Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 internal   Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
        pfe      functional Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 memory     Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 io         Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 storage    Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 switch     Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 processing Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET
                 internal   Minor      0        0       1         0       LOG|CM ALARM|
                            Major      0        0       1         0       RESET
                            Fatal      0        0       1         0       RESET

     run show chassis fpc pic-status
    Slot 0   Present

     show chassis pic fpc-slot 0 pic-slot 0
    FPC 0 is not online

    Any idea how to fix it?

    Thanks



  • 2.  RE: Mx204 fpc down Command aborted, Host Chassis manager connection not stable
    Best Answer

    Posted 02-12-2023 06:24

    These seem to indicate an hardware failure.

    If you have not already power off and startup the entire chassis again since the fpc are integrated on this model.

    If this does not clear the issue you can try to manually restart and force online the fpc.

    request chassis fpc

    If none of these work, there is likely a hardware failure that would require a RMA.



    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
    ------------------------------



  • 3.  RE: Mx204 fpc down Command aborted, Host Chassis manager connection not stable

    Posted 02-12-2023 07:36

    Hello Steve,

    We rebooted the system from command line few times but it didn't work.

     We tried all those commands with chassis to start fpc or see status it failed.

    Finally we powered off the system unplug the cables and powered and restarted after five minutes. 
    It worked but we have no clue why it failed or how to avoid it.

    This was before hard reboot
    show chassis fan
          Item                      Status   % RPM     Measurement
          Fan Tray 0                Absent
          Fan Tray 1                Absent
          Fan Tray 2                Absent

    Though this error was seen after hard reboot

    ata5: COMRESET failed (errno=16)
    ata5: COMRESET failed (errno=16)
    ata5: COMRESET failed (errno=16)
    ata5: COMRESET failed (errno=16)
    ata5: reset failed, giving up
    VMHost crash kernel loaded at reserved memory

    We still trying to figure the root cause of this issue.

    Thank you




  • 4.  RE: Mx204 fpc down Command aborted, Host Chassis manager connection not stable

    Posted 02-13-2023 05:59

    Seems likely there is a hardware failure here, you will need to open a JTAC support case to get a replacement if it is still under warranty or support.



    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
    ------------------------------