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    Checklist for Monitoring the Cooling System

    Purpose

    You monitor and maintain the cooling system to keep an acceptable operating temperature for the router chassis and its components. (See Table 1.)

    Action

    Table 1: Checklist for Monitoring the Cooling System

    Monitor Cooling System Tasks

    Command or Action

    Checking the Cooling System Status

    show chassis environment

    Checking the Cooling System Alarms
    1. Check the Alarm Indicators on the Craft Interface

    show chassis craft-interface

    Check the router craft interface.

    1. Display Current Cooling System Alarms

    show chassis alarms

    1. Display Cooling System Error Messages in the System Log File

    show log messages | match fan

    Maintaining the Air Filter

    Inspect the air filter. If dirty, clean it; if damaged, replace it.

    Verifying a Fan Failure

    Perform a swap test on the fan. If defective, replace it without powering down the router.

    Verifying an Impeller Failure

    Feel the impeller air exhaust. If no airflow, replace without powering down the router.

    Replacing a Cooling System Component

    Follow the procedure in the appropriate router hardware guide.

     

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    Published: 2012-08-20