Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

Troubleshooting the MX960 MPCs

 

Problem

Description: The MPCs are not functioning normally.

Solution

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

    The Routing Engine downloads the MPC software to it under two conditions: The MPC is present when the Routing Engine 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.

  • Make sure the MPC is properly seated in the midplane. Check that each ejector handle has been turned clockwise and is tight.

  • Check the OK/FAIL LED on the MPC and OK and FAIL line card LEDs on the craft interface. When the MPC is online and functioning normally, the OK LED lights green steadily.

  • Issue the 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:

    user@host> show chassis fpc
    Note

    The show chassis fpc command displays the status of the MPCs.

    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

    For further description of the output from the commands, see the Junos OS Administration Library.