Troubleshooting a Modular Port Concentrator (MPC)

Problem

Solution

To troubleshoot an MPC:

1. Monitor the green LED labeled OK above the MPC on the craft interface as soon as an MPC is seated in an operating router.

   Note:

   The Control Board and Routing Engine (CB-RE) downloads the MPC software to it under two conditions: The MPC is present when the CB-RE boots Junos OS, and the MPC is installed and requested online through the CLI or push button on the front panel. The MPC then runs diagnostics, during which the OK LED blinks. When the MPC is online and functioning normally, the OK LED lights green steadily.

2. Look at the display on the craft interface to check the status of the MPC and the MICs that are plugged into it.

3. Verify that the MPC is properly seated in the top and bottom backplanes of the adapter card (ADC). Check that each knob has been turned clockwise and is tight.

4. Check the OK/FAIL LED on the MPC, and OK and FAIL line card LEDs, LC0 through LC9, and LC10 through LC19 on the craft interface. When the MPC is online and functioning normally, the OK LED lights green steadily.

5. Check the status of an MPC using the following CLI command: show chassis fpc command to check the status of installed MPCs. As shown in the sample output, the value Online in the column labeled State indicates that the MPC is functioning normally:

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   user@host> show chassis fpc
   Temp  CPU Utilization (%)   Memory    Utilization (%)
   Slot State            (C)  Total  Interrupt      DRAM (MB) Heap     Buffer
     0  Online            42     10          0       2048       18         13
     1  Online            40     10          0       2048       18         13
     2  Online            40      9          0       2048       18         13
     3  Online            41      9          0       2048       18         13
     4  Online            41      9          0       2048       18         13
     5  Online            42     10          0       2048       18         13
     6  Online            42     10          0       2048       18         13
     7  Online            42     10          0       2048       18         13
     8  Online            42     10          0       2048       18         13
     9  Online            43      8          0       2048       18         13
    10  Online            43     10          0       2048       18         13
    11  Online            38     10          0       2048       18         13
    12  Online            38      8          0       2048       18         13
    13  Online            39     10          0       2048       18         13
    14  Online            39     10          0       2048       18         13
    15  Online            41     10          0       2048       18         13
    16  Online            42     10          0       2048       18         13
    17  Online            43     10          0       2048       18         13
    18  Online            44     10          0       2048       18         13
    19  Online            48      9          0       2048       18         13
   

   Use the following option to display more detailed information: detail option. The following example does not specify a slot number, which is optional:

   For further description of the output from the commands, see the Junos OS System Basics Configuration Guide.

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   user@host> show chassis fpc detail
   Slot 4 information:
     State                                 Online
     Temperature                        28
     Total CPU DRAM                   2048 MB
     Total RLDRAM                     1036 MB
     Total DDR DRAM                   11264 MB
     Start time:                           2012-11-26 16:20:07 PST
     Uptime:                               18 hours, 16 minutes, 7 seconds
     Max Power Consumption             610 Watts
   Slot 7 information:
     State                                 Online
     Temperature                        30
     Total CPU DRAM                   2048 MB
     Total RLDRAM                     1036 MB
     Total DDR DRAM                   6656 MB
     Start time:                           2012-11-26 16:20:12 PST
     Uptime:                               18 hours, 16 minutes, 2 seconds
     Max Power Consumption             520 Watts
   Slot 8 information:
     State                                 Online
     Temperature                        29
     Total CPU DRAM                   2048 MB
     Total RLDRAM                      662 MB
     Total DDR DRAM                   2560 MB
     Start time:                           2012-11-26 16:20:18 PST
     Uptime:                               18 hours, 15 minutes, 56 seconds
     Max Power Consumption             348 Watts
   Slot 9 information:
     State                                 Online
     Temperature                        31
     Total CPU DRAM                   2048 MB
     Total RLDRAM                     1036 MB
     Total DDR DRAM                   11264 MB
     Start time:                           2012-11-26 17:34:36 PST
     Uptime:                               17 hours, 1 minute, 38 seconds
     Max Power Consumption             610 Watts
   Slot 10 information:
     State                                 Present
     Temperature                        28
     Total CPU DRAM                      0 MB
     Total RLDRAM                        0 MB
     Total DDR DRAM                      0 MB
     Max Power Consumption             440 Watts
   Slot 11 information:
     State                                 Online
     Temperature                        38
     Total CPU DRAM                   2048 MB
     Total RLDRAM                     1036 MB
     Total DDR DRAM                   11264 MB
     Start time:                           2012-11-26 16:20:33 PST
    Uptime:                               18 hours, 15 minutes, 41 seconds
     Max Power Consumption             610 Watts
   Slot 15 information:
     State                                 Online
     Temperature                        36
     Total CPU DRAM                   2048 MB
     Total RLDRAM                     1036 MB
     Total DDR DRAM                   11264 MB
     Start time:                           2012-11-26 16:20:40 PST
     Uptime:                               18 hours, 15 minutes, 34 seconds
     Max Power Consumption             610 Watts
   Slot 18 information:
     State                                 Online
     Temperature                        31
     Total CPU DRAM                   2048 MB
     Total RLDRAM                     1324 MB
     Total DDR DRAM                   5120 MB
     Start time:                           2012-11-26 16:20:46 PST
     Uptime:                               18 hours, 15 minutes, 28 seconds
     Max Power Consumption             440 Watts