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Maintaining the T1600 Host Subsystem

 

Each host subsystem comprises a Routing Engine and an adjacent control board functioning together.

To maintain the host subsystem, check the host subsystem LEDs (HOST0 and HOST1) on the craft interface. If the red HOST0 FAIL or HOST1 FAIL LED is lit, look at the LCD to get more information about the cause of the problem. For more information about the LEDs and the display, see T1600 Craft Interface Description

To maintain the Routing Engines and control boards:

Maintaining the T1600 Routing Engines

Purpose

For optimum router performance, verify the condition of the Routing Engines and the control boards.

Action

On a regular basis:

  • Check the LCD on the craft interface to view information about the router temperature and the status of the Routing Engines.

  • Check the host subsystem LEDs on the craft interface. For more information about the LEDs and the display, see T1600 Craft Interface Description. During normal operations:

    • The green host subsystem OK LED on the craft interface is lit.

    • The red host subsystem FAIL LED on the craft interface is not lit.

  • Check the LEDs on the RE-2000 faceplate. During normal operations, the ONLINE LED is lit steadilygreen.

  • Check the LEDs on the RE-C1800 faceplate. During normal operations, the ONLINE LED is lit steadily green.

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

    user@host> show chassis routing-engine

For further description of the output from the commands, see show chassis routing-engine.

Maintaining the T1600 Control Boards

Purpose

For optimum router performance, verify the condition of the control boards.

Action

On a regular basis:

  • Check the host subsystem LEDs on the craft interface. For more information about the LEDs and the display, see T1600 Craft Interface Description.

    During normal operations:

    • The green host subsystem OK LED on the craft interface is lit.

    • The red host subsystem OK LED on the craft interface is not lit.

  • Check the LEDs on the control board faceplate.

    During normal operations:

    • The green OK LED on the control board faceplate is lit.

    • The yellow FAIL LED on the control board faceplate is not lit.

  • Issue the show chassis environment cb command to check the status of the T-CBs. The output is similar to the following:

    user@host> show chassis environment cb

For further description of the output from the commands, see show chassis environment cb.