Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
ON THIS PAGE
 

QFX5700/QFX5700-E FEB Forwarding Engine Board Maintenance

SUMMARY Maintaining a QFX5700 switch includes removing and installing the Forwarding Enginer Board (FEB).

The QFX5700 switch is shipped with one or two Forwarding Engine Boards (FEBs) preinstalled horizontally, mid-chassis, between the Flexible PIC Concentratoxrs (FPCs) and the Routing and Control Boards (RCBs) in the front and the fan trays in the rear.

You must remove and install the appropriate fan tray to install and remove FEBs.

Note:

Replace a failed FEB with a blank panel or new FEB within 60 minutes of removal.

Ensure you have the following equipment on hand before replacing a FEB:

  • Antistatic bag or antistatic mat

  • Electrostatic discharge (ESD) grounding strap to wrap around your bare wrist.

    Figure 1: ESD Point on Rear of the QFX5700 switch ESD Point on Rear of the QFX5700 switch
      1
    —

    ESD point

    		 

Remove the Forwarding Engine Board from the QFX5700 Switch

To remove a FEB from a QFX5700 switch chassis:

  1. Take the FEB offline using the request chassis feb slot slot number offline command.
    Note:

    If you suspect that the FEB is faulty and want to ensure that packets do not flow through the FEB, power off the FEB instead of taking the FEB offline. To power down the FEB, use the set chassis feb power-off slot slot number command. Before you bring a new FEB in that slot online, you must delete the old configuration using the delete chassis feb power-off slot slot number command.
  2. Place an antistatic bag or an antistatic mat on a flat, stable surface.
  3. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point on the chassis. An ESD point is located on the rear of the QFX5700 switch.
  4. Remove the appropriate fan tray).
  5. Using your fingers, loosen the captive screws of the FEB.
    Figure 2: Loosen the Captive Screws Loosen the Captive Screws
  6. Unlatch the ejector handles, and spread them apart. The FEB slides about a quarter of the way out of the slot. See Figure 3.
    Figure 3: Spreading the Ejector Handles and Removing the FEB from the QFX5700 Chassis Spreading the Ejector Handles and Removing the FEB from the QFX5700 Chassis
  7. Grasp the ejector handle with one hand, and place your other hand under the FEB for support as you slide the FEB out of the slot.
  8. Place the FEB on the antistatic mat with the printed circuit board (PCB) facing upward. Be careful not to bump or handle the FEB by the connectors. If you do not have an antistatic mat, have another person help you slide the antistatic bag over the FEB before placing it on a stable surface.
    CAUTION:

    Do not stack hardware components on top of one another after you remove them. Place each component on an antistatic mat resting on a stable, flat surface.

Install the Forwarding Engine Board (QFX5700-FEB/QFX5700E-FEB) in the QFX5700 switch

To install a FEB:

  1. Place an antistatic bag or an antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point on the chassis. An ESD point is located on the rear of QFX5700 switch.
  3. Remove the appropriate fan tray.
  4. Either remove the failing FEB (see Remove the Forwarding Engine Board from the QFX5700 Switch) or, if a FEB blank is installed, pull the quarter-turn knobs on the blank, press them, and gently pull the blank out of the slot (see Figure 4).
    Figure 4: Removing a FEB Blank Removing a FEB Blank
  5. Lift the FEB by the handle with one hand, and support the lower edge with the other hand.
  6. Gently slide the FEB into the open slot until the ejector handles engage and start to close.
  7. Grasp the two ejector handles, and fold them inward until they latch to seat the FEB (see Figure 5).
    Figure 5: Installing a QFX5700-FEB/QFX5700E-FEB Installing a QFX5700-FEB/QFX5700E-FEB
  8. Hand-tighten the captive screws.
    Note:

    After you install FEB0, install Fan Tray 0 and after you install FEB1, install Fan Tray 1. Both the fan trays must be attached back to the chassis after installation to ensure uninterrupted services.
  9. Bring the FEB online using the request chassis feb slot slot number online command.

    You can check the status of the FEB using the show chassis fabric febs and the show chassis fabric plane-location commands.

    Note:

    If you completely powered off the FEB using the set chassis feb power-off slot slot command, you must delete the configuration in order to bring the FEB online. To delete the configuration and bring a replacement FEB online, use the delete chassis feb power-off slot slot number command.