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Maintaining MX2020 MICs


For optimum router performance, verify the condition of the Modular Interface Cards (MICs).


On a regular basis:

  • Check the LEDs on MIC faceplates. The meaning of the LED states differs for various MICs. For more information, see the MX Series Interface Module Reference. If the MPC that houses the MIC detects a MIC failure, the MPC generates an alarm message to be sent to the Routing Engine.

  • Issue the CLI show chassis fpc pic-status command. The MIC slots in an MPC are numbered PIC 0/1 and PIC 2/3, top to bottom:

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