Technical Documentation

Maintaining MX240 FPCs

Purpose

The MX240 router can have one Flexible PIC Concentrator (FPC) installed horizontally in the front of the chassis. For optimum router performance, verify the condition of the FPC.

Action

On a regular basis:

  • Check the LEDs on the craft interface directly above the FPC. The green LED labeled OK lights steadily when an FPC is functioning normally.
  • Check the OK/FAIL LED on the FPC. If the FPC detects a failure, the FPC sends an alarm message to the Routing Engine.
  • Issue the CLI show chassis fpc command to check the status of the installed FPC. 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         33      8          0       1024       18         30
      1  Online         37      3          0       1024       12         21
      2  Empty

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


    user@host> show chassis fpc detail
    Slot 0 information:
      State                                 Online    
      Temperature                        33 degrees C / 91 degrees F
      Total CPU DRAM                   1024 MB
      Total RLDRAM                      256 MB
      Total DDR DRAM                   4096 MB
      Start time:                           2008-11-25 11:16:41 PST
      Uptime:                               25 minutes, 28 seconds
    Slot 1 information:
      State                                 Online    
      Temperature                        37 degrees C / 98 degrees F
      Total CPU DRAM                   1024 MB
      Total RLDRAM                      128 MB
      Total DDR DRAM                   2048 MB
      Start time:                           2008-11-25 11:16:43 PST
      Uptime:                               25 minutes, 26 seconds
  • Issue the CLI show chassis fpc pic-status command. The following example shows an FPC installed in DPC slots 1 and 2:

    user@host> show chassis fpc pic-status
      Slot 0   Online       DPC 40x 1GE R
        PIC 0  Online       10x 1GE(LAN)
        PIC 1  Online       10x 1GE(LAN)
        PIC 2  Online       10x 1GE(LAN)
        PIC 3  Online       10x 1GE(LAN)
      Slot 1   Online       MX FPC Type 3
        PIC 0  Online       1x OC-192 SONET
        PIC 1  Online       1x OC-192 SONET

    Note: An FPC takes up two DPC slots when installed on an MX Series router. The slot number corresponds to the lowest numbered DPC slot.

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


Published: 2010-08-02

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