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Maintaining the JRR200 Cooling System

Maintaining the Fan Trays on the JRR200 Route Reflector


For optimum cooling, verify the condition of the fan trays.


  • Monitor the status of the fan trays. All the fan trays work in unison to cool the JRR200 route reflector. If one fan trayfails, the redundant fan tray acts as a backup. A major alarm is triggered when a fan fails, and a minor alarm and major alarm is triggered when a fan tray is removed. We recommend that you replace the fan tray immediately to maintain proper cooling.

  • To display the status of the cooling system, issue the show chassis environment command. The output shown below is an example.

Replacing the JRR200 Route Reflector Fan Tray

Each fan tray is a field-replaceable unit (FRU) installed in the rear panel of JRR200 route reflector. You can remove and replace the fan trays without powering off JRR200 route reflector or disrupting route reflector functions.


All the fan trays must be installed and operational for optimal functioning of JRR200 route reflector.

To replace the fan tray:

  1. Identify the physical location of the faulty fan tray on the rear panel of the chassis. Figure 1 shows how the fan trays are numbered.
    Figure 1: JRR200 Route Reflector Fan Tray NumberingJRR200 Route Reflector Fan Tray Numbering
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  3. Loosen the captive screws on the fan tray faceplate.
  4. Grasp the captive screw and pull out the fan tray completely out of the chassis.
  5. Insert the replacement fan tray straight into the chassis.
  6. Tighten the captive screw on the fan tray faceplate to secure it in the chassis.