Juniper M40 Manuale utente

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FPC Installation Instructions 1

FPC Installation Instructions

Part No. 530-005362-01

Revision 2

1 October 2002

This document describes how to remove and replace a Flexible PIC Concentrator (FPC) on a

Juniper Networks M20, M40, M40e, or M160 Internet router.

For additional installation and configuration information, refer to the following

documentation:

!M20 Internet Router Hardware Guide

!M40 Internet Router Hardware Guide

!M40e Internet Router Hardware Guide

!M160 Internet Router Hardware Guide

!JUNOS Internet Software Operational Mode Command Reference

!JUNOS Internet software configuration guides

Contents FPC Description ....................................................................................................................2

M20 FPC Description .....................................................................................................3

M40 FPC Description .....................................................................................................4

M40e FPCs Description..................................................................................................5

M160 FPCs Description..................................................................................................7

Tools and Parts Required ......................................................................................................8

Replace an FPC in an M20 Router.........................................................................................9

Remove an FPC from an M20 Router.............................................................................9

Install an FPC in an M20 Router...................................................................................10

Replace an FPC in an M40 Router.......................................................................................12

Remove an FPC from an M40 Router...........................................................................12

Install an FPC in an M40 Router...................................................................................14

Replace an FPC in an M40e or M160 Router.......................................................................16

Remove an FPC from an M40e or M160 Router...........................................................16

Install an FPC in an M40e or M160 Router...................................................................18

Replace a PIC in an M40e-FPC ............................................................................................20

Remove a PIC from an M40e-FPC................................................................................21

Install a PIC in an M40e-FPC........................................................................................21

PIC Software Configuration.................................................................................................22

Contact Juniper Networks....................................................................................................22

FPC Description

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FPC Installation Instructions

FPC Description

The FPCs on a router house the Physical Interface Cards (PICs), which connect the router to

network media. The I/O Manager ASIC or ASICs on the FPC accepts incoming data packets

from the PICs on the FPC and divides each packet into 64-byte cells. The cells cross the

midplane to the SFM, where another ASIC decides how to distribute them among the

memory buffers located on and shared by all installed FPCs. After the SFM decides how to

forward a packet, the I/O Manager ASIC or ASICs on the FPC reassembles the corresponding

data cells back into network-packet form and passes the packet to the appropriate PIC for

transmission to the network.

FPCs are hot-insertable and hot-removable. When you remove or install an FPC, packet

forwarding halts for about 200 ms while the Packet Forwarding Engine adjusts to the change

in the amount of memory available in the pool located on and shared by all FPCs. When you

install an FPC into a functioning router, the Routing Engine downloads the FPC software, the

FPC runs its diagnostics, and the PICs housed on the FPC are enabled. Forwarding continues

uninterrupted during this process.

An FPC can be installed into any FPC slot, regardless of the PICs it contains, and any

combination of slots can be used. If a slot is empty, you must install a blank FPC panel to

shield it, so that cooling air can circulate properly throughout the card cage.

For a description of the FPCs supported on each router, see the following sections:

!M20 FPC Description on page 3

!M40 FPC Description on page 4

!M40e FPCs Description on page 5

!M160 FPCs Description on page 7

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FPC Installation Instructions 3

FPC Description

M20 FPC Description

In an M20 router, up to four FPCs install horizontally into the midplane from the front of the

chassis, below the System and Switch Board (SSB). Each FPC is referenced by the number of

the slot in which it is installed. The slot numbers range from FPC0 through FPC3, from top to

bottom in the chassis. Each FPC accommodates up to four PICs. Figure 1 shows a chassis

with FPCs—each housing four PICs—installed in all four slots.

Figure 1: M20 Router with Four FPCs Installed

1111-B

FPC0

FPC1

FPC2

FPC3

FPC Description

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FPC Installation Instructions

M40 FPC Description

In an M40 router, up to eight FPCs install vertically into the backplane from the front of the

chassis, four on either side of the System Control Board (SCB). Each FPC is referenced by the

number of the slot in which it is installed. The slot numbers range from FPC0 through FPC7,

from left to right in the chassis. Each FPC can accommodate up to four PICs. Figure 2 shows

an FPC housing four PICs installed in slot FPC7.

Figure 2: M40 Router with FPC Installed in Slot FPC7

1060

FPC LEDs

FPC

PICs

(installed in FPC)

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FPC Installation Instructions 5

FPC Description

M40e FPCs Description

In an M40e router, up to eight FPCs install vertically into the midplane from the front of the

chassis. Each FPC is referenced by the number of the slot in which it is installed. The slot

numbers range from FPC0 through FPC7, from left to right in the chassis.

The M40e router supports the three types of FPC shown in Figure 3:

!M40e-FPC—Accommodates up to four PICs of the type also supported on

M20 and M40 routers.

!M40e-FPC1—Accommodates up to four lower-speed PICs such as single-port OC-12 and

Gigabit Ethernet interfaces. The offline button for each PIC is on the FPC card carrier.

!M40e-FPC2—Accommodates one higher-speed PIC, such as an OC-48/STM-16 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.

Figure 3: M40e-FPC, M40e-FPC1, and M40e-FPC2

M40e-FPC

Ejector lever

M40e - FPC2

Ejector lever

Offline

button

Ejector lever

M40e - FPC1

Ejector lever

Offline

buttons

(on FPC)

1944

FPC Description

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FPC Installation Instructions

Any combination of the three types of FPC can be installed in the M40e router. Figure 4

shows an M40e router with an M40e-FPC1 (housing four PICs) installed in slot FPC0.

Figure 4: M40e Router with an M40e-FPC1 Installed in Slot FPC0

1909

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FPC Installation Instructions 7

FPC Description

M160 FPCs Description

In an M160 router, up to eight FPCs install vertically into the midplane from the front of the

chassis. Each FPC is referenced by the number of the slot in which it is installed. The slot

numbers range from FPC0 through FPC7, from left to right in the chassis.

The M160 router supports the two types of FPC shown in Figure 5:

!FPC1—Accommodates up to four lower-speed PICs such as single-port OC-12 and

Gigabit Ethernet interfaces. The offline button for each PIC is on the FPC card carrier.

!FPC2—Accommodates up to four higher-speed PICs, such as OC-48, and Tunnel

interfaces. The offline button for each PIC is on the PIC faceplate.

Figure 5: FPC1 and FPC2 for the M160 Router

Any combination of the two FPC types can be installed in the M160 router. The installation

and removal of the two FPC types is identical, so the instructions in this document refer to

both types simply as “FPC”.

1187

Ejector lever

FPC 2

Ejector lever

Offline buttons

(on PICs)

Ejector lever

FPC 1

Ejector lever

Offline buttons

(on FPC)

Tools and Parts Required

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FPC Installation Instructions

Figure 6 shows an M160 router with an FPC1 (housing four PICs) installed in slot FPC0.

Figure 6: M160 Router with an FPC1 Installed in Slot FPC0

Tools and Parts Required

To replace an FPC or a PIC, you need the following tools and parts:

!Phillips (+) screwdrivers, numbers 1 and 2

!Electrostatic bag or antistatic mat, one for each FPC removed from the chassis and PIC

removed from an FPC

!ESD grounding wrist strap

1189

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FPC Installation Instructions 9

Replace an FPC in an M20 Router

On an M20 router, the FPCs are hot-insertable and hot-removable, so you can remove and

replace them without powering down the router. When you remove an FPC, the router

continues to function, but the PICs installed on the FPC do not receive or transmit data.

For instructions, see the following sections:

!Remove an FPC from an M20 Router on page 9

!Install an FPC in an M20 Router on page 10

Remove an FPC from an M20 Router

The FPCs on an M20 router are located on the front of the chassis below the craft interface.

Each FPC, fully configured with four PICs, weighs about 3 lbs (1.5 kg).

To remove an FPC from an M20 router, follow this procedure:

1. Place a antistatic foam mat on a flat, stable surface to receive the FPC. If a foam mat is

not available, substitute a standard flat antistatic mat but use extra care when laying the

FPC on it to avoid damaging the electrical components. If any of the PICs on the FPC use

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 the cables

to the correct PICs.

4. Take the FPC offline by pressing and holding its offline button for 5 seconds or until the

green OK LED next to the button goes out. The FPC offline buttons are located in a

column at the right side of the craft interface.

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 drape each disconnected cable over the covered metal hooks in the cable

management system at the top of the chassis front, to prevent the cables from

developing stress points.

6. Unscrew the thumbscrews at the left and right ends of the FPC.

7. Pull the ends of the extractor clips, which are adjacent to the thumbscrews, away from

the face of the FPC.

Do not look directly into the ends of fiber-optic cables or

into the transceivers on the PIC faceplate. Single-mode

fiber-optic cable and the PICs that use it (such as ATM and

SONET/SDH interfaces) emit laser light that can damage

your eyes.

Do not leave a transceiver uncovered. The safety cap keeps

the port clean and prevents accidental exposure to laser

light.

Replace an FPC in an M20 Router

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FPC Installation Instructions

8. Grasp the FPC with both hands and slide it about halfway out of the chassis.

SeeFigure7.

9. Place one hand underneath the FPC to support it, and slide it completely out of the

chassis. Set the FPC on the antistatic foam mat prepared in Step 1, component-side

down and with the PIC faceplates facing you.

10. If you are removing or replacing PICs on the FPC, see the instructions in the M20 Internet

Router Hardware Guide.

Figure 7: Remove an FPC from an M20 Router

Install an FPC in an M20 Router

To install an FPC in an M20 router, follow this procedure:

1. Attach an ESD wrist strap to your bare wrist and connect the wrist strap to one of the

two ESD points on the chassis.

2. Install or remove PICs as desired by following the instructions in the M20 Internet Router

Hardware Guide. You must install or remove PICs before installing the FPC into the

chassis. If any PICs use fiber-optic cable, make sure that each transceiver is covered with

a rubber safety cap.

To avoid damaging any components, use extra care when

laying the FPC 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.

1114

PICs

FPC

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