Troubleshooting the MX960 FPCs

Problem

Solution

• Monitor the green LED labeled OK above the FPC on the craft interface as soon as an FPC is seated in an operating router.

  The Routing Engine downloads the FPC software to it under two conditions: the FPC is present when the Routing Engine boots Junos OS, and the FPC is installed and requested online through the CLI or push button on the front panel. The FPC then runs diagnostics, during which the OK LED blinks. When the FPC is online and functioning normally, the OK LED lights green steadily.

• Make sure the FPC is properly seated in the midplane. Check that each ejector handle has been turned clockwise and is tight.

• Check the OK/FAIL LED on the FPC and OK and FAIL FPC LEDs on the craft interface. When the FPC is online and functioning normally, the OK LED lights green steadily.

• Issue the show chassis fpc command to check the status of installed FPCs. As shown in the sample output, the value Online in the column labeled State indicates that the FPC is functioning normally:

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  user@host> show chassis fpc
                Temp  CPU Utilization (%)   Memory    Utilization (%)
  Slot State    (C)  Total  Interrupt      DRAM (MB) Heap     Buffer
    0  Online   24      3          0       1024       13         21
    1  Empty
    2  Online   41      9          0       1024       15         57
    3  Online   43      5          0       1024       16         57
    4  Online   43     11          0       1024       16         57
    5  Online   41      9          0       1024       15         57
    6  Online   43      5          0       1024       16         57
    7  Empty
    8  Empty
    9  Empty
    10 Online   24      3          0       1024       13         21
    11 Empty           
   

  Note:

  The show chassis fpc command displays the status of the FPCs.

  For more detailed output, add the detail option. The following example does not specify a slot number, which is optional:

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  user@host> show chassis fpc detail
  Slot 0 information:
    State                                 Online    
    Temperature                        24 degrees C / 75 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      128 MB
    Total DDR DRAM                   2048 MB
    Start time:                           2008-12-11 16:53:24 PST
    Uptime:                               15 hours, 2 minutes, 47 seconds
  Slot 2 information:
    State                                 Online    
    Temperature                        29 degrees C / 84 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      256 MB
    Total DDR DRAM                   4096 MB
    Start time:                           2008-12-11 16:53:18 PST
    Uptime:                               15 hours, 2 minutes, 53 seconds
  Slot 3 information:
    State                                 Online    
    Temperature                        29 degrees C / 84 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      256 MB
    Total DDR DRAM                   4096 MB
    Start time:                           2008-12-11 16:53:18 PST
    Uptime:                               15 hours, 2 minutes, 53 seconds
  Slot 4 information:
    State                                 Online    
    Temperature                        29 degrees C / 84 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      256 MB
    Total DDR DRAM                   4096 MB
    Start time:                           2008-12-11 16:53:18 PST
    Uptime:                               15 hours, 2 minutes, 53 seconds
  Slot 5 information:
    State                                 Online    
    Temperature                        29 degrees C / 84 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      256 MB
    Total DDR DRAM                   4096 MB
    Start time:                           2008-12-11 16:53:22 PST
    Uptime:                               15 hours, 2 minutes, 49 seconds
  Slot 6 information:
    State                                 Online    
    Temperature                        29 degrees C / 84 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      256 MB
    Total DDR DRAM                   4096 MB
    Start time:                           2008-12-11 16:53:18 PST
    Uptime:                               15 hours, 2 minutes, 53 seconds
  Slot 10 information:
    State                                 Online    
    Temperature                        24 degrees C / 75 degrees F
    Total CPU DRAM                   1024 MB
    Total RLDRAM                      128 MB
    Total DDR DRAM                   2048 MB
    Start time:                           2008-12-11 16:53:24 PST
    Uptime:                               15 hours, 2 minutes, 47 seconds
  

  For further description of the output from the commands, see the Junos OS Administration Library for Routing Devices.