Maintaining M120 FPCs and CFPCs

Purpose

For optimum router performance, verify the condition of the Flexible PIC Concentrators (FPCs) and compact FPCs (CFPCs). The router can have up to six FPCs, four of Type 1, 2, or 3, and two compact CFPCs, mounted vertically in the FPC card cage at the front of the chassis, as shown in Front View of a Fully Configured Router Chassis.

Action

On a regular basis:

• Check the LEDs on the craft interface directly above each FPC slot. The green LED labeled OK lights steadily when an FPC is functioning normally. For more information, see FPC LEDs on the M120 Craft Interface.
• Issue the CLI 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:
  
  

  user@host> show chassis fpc

                      Temp  CPU Utilization (%)   Memory    Utilization (%)
  Slot State            (C)  Total  Interrupt      DRAM (MB) Heap     Buffer
    0  Empty
    1  Empty
    2  Online            39      1          0       128       1         59
    3  Online            41      0          0       128       1         59
    4  Online            43      0          0       128       1         58
    5  Online            39      0          0       128       3         59

  For more detailed output, add the detail option. The following example also specifies a slot number (2), which is optional:

  
  

  user@host> show chassis fpc detail 2

   State                               Online
    Temperature                         39 degrees C / 102 degrees F
    Total CPU DRAM                      128 MB
    Start time                          2006-05-02 08:53:29 PDT
    Uptime                              1 hour, 51 minutes, 57 seconds
  

  For further description of the output from the commands, see the Junos OS System Basics and Services Command Reference.