Troubleshooting a Modular Port Concentrator (MPC)
Problem
Description
The following LEDs indicate a problem with an MPC:
The red FAIL LED above the MPC is lit.
The green OK LED above the MPC is not lit.
Solution
To troubleshoot an MPC:
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.
Look at the display on the craft interface to check the status of the MPC and the MICs that are plugged into it.
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.
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.
Check the status of an MPC using the following CLI command:
show chassis fpccommand 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: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.
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