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Maintaining the M120 Host Subsystem

 

Purpose

For optimum router performance, verify the condition of the host subsystem. The host subsystem comprises a Routing Engine installed directly into a CB.

Action

On a regular basis:

  • Check the LEDs on the craft interface to view information about the status of the Routing Engines. For more information about the LEDs and the display, see M120 Craft Interface Description.

  • Check the LEDs on the CB faceplate to see information about them.

  • Check the LEDs on the Routing Engine faceplate to see information about them.

  • To check the status of the Routing Engines, issue the show chassis routing-engine command. The output is similar to the following:

    user@host> show chassis routing-engine routing engine status
  • To check the status of the CBs, issue the show chassis environment cb command. The output is similar to the following:

    user@host> show chassis environment cb

For more information about using the CLI, see the Junos OS documentation.