Maintaining T640 FPCs

Purpose

For optimum router performance, verify the condition of the FPCs. The router can have up to eight FPCs mounted vertically in the FPC card cage at the front of the chassis.

Action

• Check the LCD on the craft interface and the LEDs on the craft interface directly above each FPC slot. During normal operation:

  • The green OK LED above the FPC on the craft interface lights steadily when the FPC is online and functioning normally.
  • The green OK LED blinks during startup.
• 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  Online            23      2          0       256        12         49
    1  Online            26      5          0       256        21         49
    2  Online            31      5          0       1024        6         49
    3  Online            31      8          0       1024        6         49
    4  Online            26     26          0       1024        4         49
    5  Online            25      2          0       256        12         49
    6  Online            23      1          0       256        12         49
    7  Empty
  

  For more detailed output, add the detail option. The following example also specifies a slot number (0), which is optional:

  user@host> show chassis fpc detail 0

  Slot 0 information:
    State                               Online
    Temperature                      23 degrees C / 73 degrees F
    Total CPU DRAM                  256 MB
    Total SRAM                       36 MB
    Total SDRAM                     640 MB
    Start time                          2008-12-12 11:02:43 PST
    Uptime                              5 hours, 18 minutes, 51 seconds
  

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