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Maintaining the T1600 Fan Trays

 

Purpose

For optimum cooling, verify the condition of the fans.

Action

On a regular basis:

  • Monitor the status of the fans. The fan trays each contain multiple fans that work in unison to cool the router components. If one fan fails, the host subsystem adjusts the speed of the remaining fans to maintain proper cooling. A red alarm is triggered when a fan fails, and a yellow alarm is triggered when a fan tray is removed. During normal operation, the fans in each fan tray function at normal speed.

  • To display the status of the fans, issue the show chassis environment or show chassis fan command.

    For the standard fan trays, the output for the show chassis environment command is similar to the following:

    user@host> show chassis environment

    Top Left and Top Right refer to fans in the upper front fan tray. Bottom Left and Bottom Right refer to fans in the lower front fan tray. Rear refers to the fans in the rear fan tray.

    For the quiet fan trays, the output for the show chassis environment command is similar to the following:

    user@host> show chassis environment

    Top Left and Top Right refer to fans in the upper front fan tray. Bottom Left and Bottom Right refer to fans in the lower front fan tray. Rear refers to the fans in the rear fan tray.

    For the standard fan trays, the output for the show chassis fan command is similar to the following:

    user@host> show chassis fan

    For the quiet fan trays, the output for the show chassis fan command is similar to the following:

    user@host> show chassis fan