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Removing and Installing MX10016 Switch Fabric Boards

How to Handle and Store an MX10016 Switch Fabric Board

The MX10016 chassis has several field-replaceable units (FRUs) that have fragile components. To avoid damaging the Switch Fabric Boards (SFBs), you must follow safe handling practices.

Handling Switch Fabric Boards

While removing an SFB from the router chassis, you should hold the SFB vertically until it is clear of the router chassis. Then, you should rotate the SFB 90 degrees, and place it on an antistatic mat or in an electrostatic bag for storage (see Figure 1).

Figure 1: Switch Fabric BoardSwitch Fabric Board

The proper method of holding an SFB is to:

  1. Hold the SFB by the ejectors while you keep the SFB vertical, and slide the SFB about three-quarters of the way out of the chassis.
  2. Place one hand underneath the SFB to support it, and slide it completely out of the chassis.
    CAUTION:

    Never hold an SFB by the connector edge. The connectors are fragile. You cannot align and seat an SFB properly if the connectors are damaged.

    CAUTION:

    Do not stack SFBs on top of one another or on top of any other component.

Storing Switch Fabric Boards

You must store SFBs either in the chassis or in a spare shipping container, horizontally and sheet-metal side down. Do not stack these units on top of one another or on top of any other component. Place each unit in an individual electrostatic bag or separately on an antistatic mat placed on a flat, stable surface.

Note:

Because these line cards are heavy, and because electrotatic bags are fragile, inserting a line card into the bag is best done by two people.

To insert an SFB into an electrostatic bag with the help of another person:

  1. Hold the unit horizontally with the faceplate toward you.
  2. Have the second person slide the opening of the electrostatic bag over the connector edge and then pull the bag to cover the unit.

To insert an SFB into a bag by yourself:

  1. Lay the unit horizontally on an antistatic mat that is on a flat, stable surface, with the sheet-metal side of the unit facing down.

  2. Orient the unit with the faceplate toward you.

  3. Carefully insert the connector edge into the opening of the bag, and then pull the bag toward you to cover the unit.

Removing an MX10016 Switch Fabric Board

An MX10016 has six Switch Fabric Boards (SFBs) that are located in the middle of the chassis behind the fan trays. SIB 0 through SIB 2 are located behind the left fan tray, and SIB 3 through SIB 5 are located behind the right fan tray. You must remove the appropriate fan tray to access a failing SFB (see Removing an MX10016 Fan Tray).

Ensure you have the following equipment on hand before replacing an SFB:

  • Electrostatic bag or antistatic mat

  • Electrostatic discharge (ESD) grounding strap

To remove an SFB (see Figure 4):

  1. Set the fans to full speed by using the test chassis fan tray speed 0 full and test chassis fan tray speed 1 full commands and wait for ten minutes.
  2. Take the SFB offline using the request chassis sib slot slot number offline command.
    Note:

    If you suspect the SFB is faulty and want to ensure that packets do not flow through the SFB, power down the SFB instead of taking the SFB offline. To power down the SFB, use the set chassis sib power-off slot slot number command. To bring up a new SFB in the slot, you must delete the old configuration using the delete chassis sib power-off slot slot number command.

  3. Place an electrostatic bag or an antistatic mat on a flat, stable surface.
  4. Remove the appropriate fan tray (see Removing an MX10016 Fan Tray).
  5. Wrap and fasten one end of an ESD strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis. There is an ESD point located next to the protective earthing terminal and below PSU 9 on an MX10016 (see Figure 2).
    Figure 2: ESD Point on the Rear of an MX10016 ESD Point on the Rear of an MX10016
      1
    —
    ESD point
    		 
  6. Loosen the captive screws at the top and bottom of the card.
  7. Grasp both handles and and spread the handles apart, and then slide the SFB about a quarter of the way out of the slot (see Figure 3).
    Figure 3: Loosening Captive Screws and Spreading Ejector Handles of an SFBLoosening Captive Screws and Spreading Ejector Handles of an SFB
  8. Grasp the handle with one hand and place your other hand under the SFB for support as you slide the SFB fully out of the slot (see Figure 4).
    CAUTION:

    The SFB surface and handles may be hot. Allow a few minutes for the surface and handles to cool by pulling out the SFB halfway out of the chassis. Wear proper protective, heat-resistant gloves while removing an SFB.

    Figure 4: Removing an SFB from an MX10016 Removing an SFB from an MX10016
  9. Support the SFB as you rotate the SFB 90 degrees, and place it on the antistatic mat with the printed circuit board facing upward. Be careful not to strike the unit against any object as you carry it or to hold the SFB by the connector edge. If you do not have an antistatic mat, have another person help you slide the electrostatic bag over the SFB before placing it on a stable surface (see Figure 5).
    CAUTION:

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

    Figure 5: An Extracted Switch Fabric BoardAn Extracted Switch Fabric Board
      1
    —
    Connectors
      2
    —
    Printed circuit board

Installing an MX10016 Switch Fabric Board

An MX10016router has six Switch Fabric Boards (SFBs) that are located in the middle of the chassis behind the fan trays. SFB 0 through SFB 2 are located behind the left fan tray, and SFB 3 through SFB 5 are located behind the right fan tray. You must remove the appropriate fan tray to install a SFB. See Figure 2. Fan trays must be replaced within the duration mentioned in Table 1.

Table 1: Replacement Duration for the Fan Tray of an MX10016

Chassis Ambient Temperature

Duration

27°C

3 minutes

35°C

2 minutes 46 seconds

40°C

2 minutes
Note:

When replacing the fans or SIBs at 40°C chassis ambient temperature, ensure that the fans run at 100% fan speed for at least 10 minutes before replacing the fans or SIBs.

Use the test chassis fan tray 0 speed full-speed and test chassis fan tray 1 speed full-speed commands to set the chassis fans to 100% speed.

Ensure you have the following equipment on hand before installing an SFB:

  • Electrostatic bag or antistatic mat

  • Electrostatic discharge (ESD) grounding strap

  • Replacement SFB

To install an SFB:

  1. Place an electrostatic bag or an antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of an ESD strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis. There is an ESD point located next to the protective earthing terminal and below PSU 9 on the MX10016 rear panel (see Figure 6).
    Figure 6: ESD Point on the Rear of an MX10016 ESD Point on the Rear of an MX10016
      1
    —
    ESD point
    		 
  3. Either remove the failing SFB and store it in an electrostatic bag or on an antistatic mat (see Removing an MX10016 Switch Fabric Board) or remove the cover panel by grasping each side of the cover panel, and pulling the panel straight out (see Figure 7).
    Figure 7: Removing an SFB Cover PanelRemoving an SFB Cover Panel
  4. Lift the SFB by the handle with one hand, and support the lower edge with the other hand.
  5. Holding the SFB vertically, slide the SFB into the open slot until the ejector handles engage and start to close.
  6. Grasp the two ejector handles and fold them inward until they latch so that the SFB is fully seated (see Figure 8).
    Figure 8: Installing an MX10016 SFBInstalling an MX10016 SFB
  7. Tighten the captive screws by using your thumb and forefinger.
  8. Install the appropriate fan tray (see Figure 4).
  9. Set the fans to normal speed by using the test chassis fan tray speed 0 normal and test chassis fan tray speed 1 normal command.
  10. Bring the SFB online by using the request chassis sib slot slot numberonline command. You can check the status of the SFB by using the show chassis sfb and the show chassis fabric plane-location commands.
    Note:

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