FPCs for the M40e Router

This section describes the chassis, the supported FPCs, and how to replace FPCs for the M40e router.

Chassis Description

In an M40e router, you can install up to eight FPCs vertically into the midplane from the front of the chassis. You reference each FPC by its slot number. Slots are numbered FPC0 to FPC7 from left to right in the chassis. Each FPC holds up to four PICs (except the M40e FPC2, which holds only one).

FPC Descriptions

This section describes the types of FPCs that the M40e router supports.

The M40e router supports five types of FPCs:

• FPC—Rated at 3.2 Gbps full duplex; holds up to four PICs.
• FPC1—Rated at 3.2 Gbps full duplex; holds up to four lower-speed PICs, such as those with single-port OC12/STM3 and Gigabit Ethernet interfaces. The offline button for each PIC is on the FPC card carrier.
• FPC2—Rated at 3.2 Gbps full duplex; holds one higher-speed PIC, such as those with an OC48/STM16 interface. The lower three slots in the M40e FPC2 are covered by a blank panel. The offline button for the PIC is on the PIC faceplate.
• Enhanced Plus FPC1—Rated at 3.2 Gbps full duplex; holds up to four lower-speed PICs, such as those with single-port OC12/STM3 and Gigabit Ethernet interfaces. The offline button for each PIC is on the FPC card carrier. The M40e Enhanced Plus FPC is labeled with an EP sticker on the faceplate.
• Enhanced Plus FPC2—Rated at 12.8 Gbps full duplex; holds one higher-speed PIC, such as those with an OC48/STM16 interface. The offline button for each PIC is on the FPC card carrier. The M40e Enhanced Plus FPC is labeled with an EP sticker on the faceplate.

You can install any combination of these FPC types in the M40e router.

Figure 12 shows the FPC, FPC1, and FPC2 that the M40e router supports. Figure 13 shows the Enhanced Plus FPC1 and Enhanced Plus FPC2 that the M40e router supports.

Removing an FPC

The FPCs on an M40e router are installed into the front of the chassis below the craft interface. Each FPC weighs up to 15 lb (6.8 kg).

To remove an FPC, follow this procedure:

1. Place an antistatic mat on a flat, stable surface to receive the FPC. If you are removing an M40e FPC from an M40e router, use a foam mat; if a foam mat is not available, use a standard flat antistatic mat, but use extra care when laying the M40e FPC on it to avoid damaging the electrical components. If any of the PICs on the FPC uses fiber-optic cable, also have ready a rubber safety cap for each transceiver and cable.
2. Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
3. Label the cables connected to each PIC on the FPC, so that you can reconnect each cable to the correct PIC later.
4. Take the FPC offline by pressing and holding down its offline button for about 5 seconds or until the red FAIL LED next to the button lights. The offline button for each FPC is on the craft interface directly above the FPC slot.
5. Disconnect the cables from the PICs on the FPC. If a PIC uses fiber-optic cable, immediately cover each transceiver and the end of each cable with a rubber safety cap. Carefully arrange the disconnected cables in the cable management system directly below the FPC card cage to prevent the cables from developing stress points.   

   Do not look directly into the ends of fiber-optic cables or into the transceivers on the interface faceplate. Single-mode fiber-optic cable and the interfaces that use it (such as ATM and SONET/SDH interfaces) emit laser light that can damage your eyes.

   Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

   Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

6. If you must remove or replace PICs in an M40e FPC1 or M40e FPC2 , do so now, before removing the FPC from the chassis. For instructions, see the M40e Internet Router Hardware Guide. If you are removing or replacing PICs in an M40e FPC, wait until Step Step 12.
7. Unscrew the thumbscrews at the top and bottom of the FPC.
8. Pull the ends of the ejector levers, which are adjacent to the thumbscrews, away from the face of the FPC until they are nearly perpendicular to it (see Figure 14).
9. Grasp the FPC with both hands and slide it about halfway out of the chassis.
10. Place one hand under the FPC to support it, and slide it completely out of the chassis.
11. Set the FPC on the antistatic foam mat that you prepared in Step Step 1.   

    The weight of the FPC is concentrated in the back end. Be prepared to accept the full weight—up to 15 lb (6.8 kg)—as you slide the FPC out of the chassis. Do not hold the FPC by the ejector levers, bus bars, or edge connectors. They cannot support its weight. To avoid damaging any components, use extra care when laying an M40e FPC component-side up on the antistatic mat, particularly if the mat is not made of foam. Do not stack the FPC on top of or under any other component.

12. If you are removing or replacing PICs on an M40e FPC, see the PIC, SFP, and XENPAK Installation Instructions.

    Figure 14: Removing an FPC from an M40e Router

    

Installing an FPC

To install an FPC into an M40e router, follow this procedure:

1. Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
2. If you are installing an M40e FPC, you can remove or replace PICs now, before installing the M40e FPC into the chassis. See the PIC, SFP, and XENPAK Installation Instructions.

   If you are installing an M40e FPC1 or M40e FPC2 into an M40e router, wait to remove or replace PICs until Step Step 7.

   If any PICs already installed in the FPC uses fiber-optic cable, make sure that each transceiver is covered with a rubber safety cap.

3. Verify that the ends of the ejector levers, which are at the top and bottom of the FPC, are pushed outward and nearly perpendicular to the face of the FPC.
4. Grasp the front of the FPC with one hand, and place the other hand under the FPC to support it.

   Do not hold the FPC by the ejector levers, bus bars, or edge connectors. They cannot support its weight.

5. Align the bottom rear corners of the FPC with the guides at the bottom of the desired FPC slot. Slide the FPC all the way into the card cage until it contacts the midplane.

   When an M40e FPC is installed in the chassis, the lettering on the faceplates of the PICs is upside down.

6. Push the ends of the ejector levers inward until they are nearly flush with the face of the FPC (see Figure 15).
7. If you are installing an M40e FPC1 or M40e FPC2 into an M40e router, you can remove or replace PICs at this point. For instructions, see the M40e Internet Router Hardware Guide.
8. If any PICs on the FPC connect to fiber-optic cable, remove the rubber safety cap from each transceiver and cable.     

   Do not look directly into the ends of fiber-optic cables or into the transceivers on the interface faceplate. Single-mode fiber-optic cable and the interfaces that use it (such as ATM and SONET/SDH interfaces) emit laser light that can damage your eyes.

9. Insert the appropriate cable into the cable connector ports on each PIC on the FPC. Secure the cables so that they do not support their own weight. Use the cable management system to place excess cable out of the way in a neatly-coiled loop. Placing fasteners on a loop helps to maintain its shape.  

   Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.

   Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

10. Press and hold the FPC offline button (on the craft interface above the slot that houses the FPC) to bring the FPC and PICs online. When the FPC is online, the FPC LED labeled OK on the craft interface lights steadily, and you can release the offline button.

    Figure 15: Installing an FPC into an M40e Router