• Supported Platforms
• MX960 Routers

• Related Topics
• MX960 Chassis Description
• MX960 Dense Port Concentrator Description
• MX960 DPC and MPC LEDs on the Craft Interface
• Troubleshooting the MX960 DPCs
• Replacing an MX960 DPC

Maintaining MX960 DPCs

Purpose

The router can have up to 12 Dense Port Concentrators (DPCs) mounted vertically in the DPC card cage at the front of the chassis. For optimum router performance, verify the condition of the DPCs.

Action

On a regular basis:

• Check the LEDs on the craft interface directly above each DPC slot. The green LED labeled OK lights steadily when a DPC is functioning normally.
• Check the OK/FAIL LED on the DPC. For more information, see MX Series 3D Universal Edge Routers Line Card Guide. If the DPC detects a failure, the DPC sends an alarm message to the Routing Engine.
• Check the status of installed DPCs by issuing the CLI show chassis fpc command to check the status of installed DPCs. As shown in the sample output, the value Online in the column labeled State indicates that the DPC 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            22     40          0       1024       15         57
    3  Empty           
    4  Online            22     24          0       1024       15         57
    5  Empty           
    6  Empty           
    7  Offline         ---Offlined by cli command---
    8  Empty           
    9  Empty           
   10  Empty           
   11  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 2 information:
    State                               Online
    Temperature                      22 degrees C / 71 degrees F
    Total CPU DRAM                 1024 MB
    Total SRAM                      256 MB
    Total SDRAM                       0 MB
    Start time                          2006-11-03 07:35:40 PST
    Uptime                              2 hours, 27 minutes, 1 second
  Slot 4 information:
    State                               Online
    Temperature                      22 degrees C / 71 degrees F
    Total CPU DRAM                 1024 MB
    Total SRAM                      256 MB
    Total SDRAM                       0 MB
    Start time                          2006-11-03 07:35:48 PST
    Uptime                              2 hours, 26 minutes, 53 seconds
  Slot 7 information:
    State                               Online
    Temperature                      24 degrees C / 75 degrees F
    Total CPU DRAM                 1024 MB
    Total SRAM                      256 MB
    Total SDRAM                       0 MB
    Start time                          2006-11-03 07:35:53 PST
    Uptime                              2 hours, 26 minutes, 48 seconds
  

• Issue the CLI show chassis fpc pic-status command. The DPC slots are numbered from 0 through 5, 2/6, 7 through 11, left to right:
  
  

  user@host> show chassis fpc pic-status

  Slot 2   Online       MX960 40GE DPC
    PIC 0  Online       10x 1GE
    PIC 1  Online       10x 1GE
    PIC 2  Online       10x 1GE
    PIC 3  Online       10x 1GE
  Slot 4   Online       MX960 4 XGE DPC
    PIC 0  Online       1x 10GE(LAN/WAN)
    PIC 1  Online       1x 10GE(LAN/WAN)
    PIC 2  Online       1x 10GE(LAN/WAN)
    PIC 3  Online       1x 10GE(LAN/WAN)
  Slot 7   Offline      MX960 4 XGE DPC
  

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