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Replacing a Routing Engine

The Routing Engine is located in the rear slot labeled RE0 on the services gateway. Before you replace the Routing Engine, you must power off the services gateway.

To replace the Routing Engine:

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage.
  3. If you have not already done so, power off the device by pressing the Power button on the front panel of the Switch Fabric Board (SFB) for three to five seconds.

    The PWR LED blinks to show you that the device is shutting down. Wait for the device to shut down before proceeding.

  4. Disconnect any cables connected to the AUX or USB ports.
  5. Loosen the captive screws at each end of the Routing Engine faceplate.
  6. Pull open the ejector handles to unseat the Routing Engine.
  7. Grasp the Routing Engine by the ejector handles and slide it about halfway out of the chassis.

    Figure 2: Removing an RE (SRX 3400 Shown, SRX 3600 Similar)

    Image g036028.gif

  8. Place one hand underneath the Routing Engine to support it and slide it completely out of the chassis.
  9. Place the Routing Engine on the antistatic mat.
  10. Carefully align the sides of the replacement Routing Engine with the guides inside the chassis.
  11. Slide the Routing Engine into the slot until you feel resistance, and then press the Routing Engine's faceplate until it engages the connectors.
  12. Press both of the ejector handles inward to seat the Routing Engine.
  13. Tighten the captive screws on the left and right of the Routing Engine.

    Figure 3: Installing an RE (SRX 3400 Shown, SRX 3600 Similar)

    Image g036027.gif

  14. Reconnect cables previously attached to the AUX or USB ports.
  15. Power on the services gateway by pressing the Power button on the front panel of the SFB for three to five seconds. Wait for the device to start. The OK/FAIL LED on the Routing Engine faceplate should blink green, then light steadily.

    Note: The RE may require several minutes to boot. If after this time the OK/FAIL LED is red, remove and reinstall the Routing Engine. If the OK/FAIL LED remains red, the Routing Engine is not functioning properly. Contact your customer support representative.

To check the status of the Routing Engine:

user@host> show chassis routing-engine
Routing Engine status:
  Slot 0:
    Current state                  Master
    Election priority              Master (default)
    DRAM                      1016 MB
    Memory utilization          39 percent
    CPU utilization:
      User                       0 percent
      Background                 0 percent
      Kernel                     3 percent
      Interrupt                  0 percent
      Idle                      97 percent
    Model                          RE-SRX3600
    Start time                     2008-11-03 10:25:37 PST
    Uptime                         1 day, 2 hours, 33 minutes, 6 seconds
    Last reboot reason             0x1:power cycle/failure
    Load averages:                 1 minute   5 minute  15 minute
                                       0.02       0.04       0.00

For more information about using the CLI, see the JUNOS software manuals.

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