• Supported Platforms
• MX240 Routers

• Related Topics
• MX240 Dense Port Concentrator (DPC) Description
• MX240 Dense Port Concentrator (DPC) LEDs
• Maintaining Cables that Connect to MX240 DPCs, MPCs, MICs, or PICs
• Troubleshooting the MX240 DPCs
• Replacing an MX240 DPC

Maintaining MX240 DPCs

Purpose

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

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. If the DPC detects a failure, the DPC sends an alarm message to the Routing Engine.
• Issue 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  Online         41      9          0       1024       15         57
    1  Online         43      5          0       1024       16         57
    2  Online         43     11          0       1024       16         57

  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:                           2007-12-06 11:33:00 PST
    Uptime:                               4 hours, 34 minutes, 49 seconds
  Slot 1 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:                           2007-12-06 11:33:01 PST
    Uptime:                               4 hours, 34 minutes, 48 seconds
  Slot 2 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:                           2007-12-06 11:33:05 PST
    Uptime:                               4 hours, 34 minutes, 44 seconds

• Issue the CLI show chassis fpc pic-status command. The DPC slots are numbered 1/0, 1, and 2, bottom to top:
  
  

  user@host> show chassis fpc pic-status

  Slot 0   Online       DPCE 4x 10GE R
    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 1   Online       DPCE 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 2   Online       DPCE 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)

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