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Maintaining the Fan Trays

 

Purpose

For optimum cooling, verify the status of the fans.

Note

The speed of the fans in the rear fan tray of a T1600 router is affected by the temperature of the TXP-T1600 SIB main board (displayed as SIB n ), not by the temperature of the TXP-T1600 SIB mezzanine board [displayed as SIB n (B)].

Action

On a regular basis:

  1. Check the fan tray LEDs on the craft interface. During normal operation:
    • The OK LEDs for the fan trays are lit green.

    • The FAIL LEDs for the fan trays are off.

  2. Look at the LCD on the craft interface to view information about the TX Matrix Plus router temperature.
  3. Issue the show chassis temperature-thresholds commands.
  4. Display the status of the fans in the TX Matrix Plus router. Issue the show chassis environment sfc 0 command. During normal operations, the fans in each fan tray are functioning at less than full speed.
  5. Display the status of the fans in the routing matrix (TX Matrix Plus router and all T1600 routers). Issue the show chassis environment command.
  6. Display the status of the fans in a specific T1600 router. Issue the show chassis environment lcc lcc-number command, where lcc-number is the chassis ID of the router and can be from 0 through 3.