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Maintaining M120 FPCs and CFPCs



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.


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

    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

    For further description of the output from the commands, see the CLI Explorer.