Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation
Guide That Contains This Content
[+] Expand All
[-] Collapse All
     

    Related Documentation

     

    Checklist for Monitoring the Control Board

    Purpose

    To monitor and maintain the Control Boards that provide control and monitoring functions for the router. These functions include determining Routing Engine mastership, controlling power, performing reset and SONET clocking for the other router components, monitoring and controlling fan speed, and monitoring system status using I²C controllers. (See Table 1.)

    Action

    Table 1: Checklist for Monitoring the Control Board

    Monitor the Control Board Tasks

    Command or Action

    Monitor the Control Board Status
    1. Check the Control Board Environmental Status

    show chassis environment cb

    1. Check the Control Board Status from the Craft Interface

    show chassis craft-interface

    Check the LEDs on the Control Board faceplate.

    Check the Host Subsystem LEDs on the T320 router and the T640 router craft interface.

    Checking the Control Board Alarms
    1. Display Control Board Alarms

    show chassis alarms

    For conditions that trigger M320, T320, T640, and T1600 router alarms, see Display the Current Router Alarms.

    1. Check the Control Board LEDs

    Look at the LEDs on the Control Board faceplate.

    1. Display Control Board Error Messages in the System Log File

    show log messages | match cb

    1. Display Control Board Error Messages in the Chassis Daemon Log File

    show log chassisd | match cb

    Verify Control Board Failure
    1. Check the Control Board Connection
    1. Make sure that the Control Board is properly seated in the midplane.
    2. Ensure that none of the pins are bent.
    3. Check the thumbscrews on the ejector locking tabs.
    1. Check the Control Board Fuses

    The fuses for the Control Boards are located in the rear of the midplane behind the power supply in slot PEM0.

    1. Perform a Control Board Swap Test
    1. Take the host subsystem offline if the Control Board is master.
    2. Replace the Control Board with one that you know works.
    3. Bring the Control Board online.
    4. Check the Control Board status.
    1. Display the Control Board Hardware Information

    show chassis hardware

    1. Locate the Control Board Serial Number ID Label

    Look on the bottom of the left side of the Control Board.

    Return the Control Board

    Follow the procedure in the appropriate hardware guide.

     

    Related Documentation

     

    Published: 2012-08-20