Cisco XR 12416 Manuale utente

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Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

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CHAPTER

Maintaining the Router

The Cisco XR 12416 router is equipped as ordered and is ready for installation

and startup when it is shipped. As your networking requirements change, you may

need to upgrade the system by adding or changing components. This chapter

describes how to maintain router components.

Procedures for maintaining the router are described in the following sections:

•Powering Off the Router, page 5-2

•Removing and Installing Front Doors, page 5-3

•Cleaning or Replacing the Chassis Air Filter, page 5-7

•Removing and Replacing Blower Modules, page 5-10

•Removing and Replacing AC and DC Power Subsystem Components,

page 5-14

•Removing and Replacing the Standard AC-Input Power Shelf, page 5-19

•Removing and Replacing the Optional 2-Level AC-Input Power Shelf,

page 5-24

•Upgrading to the Optional AC Power Shelf, page 5-30

•Removing and Replacing a DC PEM, page 5-31

•Removing and Replacing the DC Power Shelf, page 5-37

•Removing and Replacing Cards from the Chassis, page 5-46

•Removing and Installing a Chassis, page 5-53

•Removing and Replacing a Power Bus Board Fuse, page 5-61

Chapter 5 Maintaining the Router

Powering Off the Router

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Prerequisites and Preparation

Before you perform any of the procedures in this chapter, be sure that you:

•Review the “Safety Guidelines” section on page 2-2.

•Read the safety and ESD-prevention guidelines described in the “Preventing

Electrostatic Discharge Damage” section on page 2-4.

•Ensure that you have all of the necessary tools and equipment before

beginning the procedure.

•Have access to the following documents during the installation:

–

Regulatory Compliance and Safety Information for Cisco 12000 Series

Routers publication that shipped with the router.

Powering Off the Router

Most field-replaceable units (FRUs) can be removed and replaced with the power

on and the system operating. This is known as online insertion and removal (OIR).

Power supplies, line cards, the RP, CSCs, SFCs, and alarm cards all support OIR.

Unless otherwise noted, the maintenance tasks described in this chapter can be

performed while the router remains powered on.

In some cases it may be necessary to power off the router, for example, to upgrade

power supplies or to replace a power shelf. Use the following procedure to power

off the router.

Step 1 Set the power switch on each power supply to the off (0) position.

Step 2 Power off all circuit breakers for the source power lines connected to the power

supplies.

Step 3 Verify that the PWR OK indicator on each power supply is off.

Step 4 Verify that the OK indicator on each blower module is off.

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Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

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Chapter 5 Maintaining the Router

Removing and Installing Front Doors

The router ships with the door hinges mounted on the left side of the chassis so

that they open from right-to-left. This section describes how to change the front

doors to open from left-to-right by installing the hinges on the opposite side.

Use the following procedure to change the location of the hinges.

Note The illustrations in this procedure show the top front door, but the procedure is

the same for either the top or bottom door.

Chapter 5 Maintaining the Router

Removing and Installing Front Doors

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Step 1 Open the top front door by pressing the right latch button (Figure 5-1).

Figure 5-1 Opening the Front Door

1Front door latches

149541

PWROK

FAULT

TEMP

ILIM

PWROK

FAULT

TEMP

ILIM

PWROK

FAULT

TEMP

ILIM

ALARM

ENABLED

FAIL

ACO/LT

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CSC

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ENABLED

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ACTIVE

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RXPKT

ACTIVE

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RXPKT

ACTIVE

CARRIER

RXPKT

ACTIVE

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LOOP RA LA

CDHNT CD

12DS3–SMB P

DOWN

LOOP RA LA

CDHNT CD

ACTIVE

CARRIER

RXPKT

OC-48/STM-16-SCPOS

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-1

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-0

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MII

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EJECT

FASTETERNET

ACTIVE

CARRIER

RXCELL

OC-12/STM-4ATM

ACTIVE

CARRIER

RXPKT

OC-48/STM-16-SCPOS

12DS3–SMB P

DOWN

LOOP RA LA

CDHNT CD

6DS3–SMB P

DOWN

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CDHNT CD

ACTIVE

CARRIER

RXPKT

ACTIVE

CARRIER

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ACTIVE

CARRIER

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ACTIVE

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ENABLED

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Chapter 5 Maintaining the Router

Removing and Installing Front Doors

Step 2 Remove the front door by lifting the (top and bottom) hinge pins to free the door

from the chassis (Figure 5-2).

Caution Make sure you are holding the front door securely so it does not drop when you

release it from the chassis.

Figure 5-2 Removing or Installing Hinge Pins

Reinstall the hinge pins into the chassis hinge brackets

PWROK

FAULT

TEMP

ILIM

PWROK

FAULT

TEMP

ILIM

PWROK

FAULT

TEMP

ILIM

ALARM

ENABLED

FAIL

ACO/LT

ALARM

CSC

FAIL

ENABLED

CRITICAL

MAJOR

MINOR

SFC

ACTIVE

CARRIER

RX PKT

ACTIVE

CARRIER

RX PKT

ACTIVE

CARRIER

RX PKT

ACTIVE

CARRIER

RX PKT

Q OC-3/STM-POS

6DS3–SMB P

DOWN

LOOP RA LA

CDHNT CD

12DS3–SMB P

DOWN

LOOP RA LA

CDHNT CD

ACTIVE

CARRIER

RX PKT

OC-48/STM-16-SCPOS

ACTIVE

CARRIER

RX CELL

OC-12/STM-4 ATM

FAST ETERNET

SLOT

-0

ROUTE PROCESSOR

SLOT

-1

COLL

LINK

RJ-45

MII

RESET

AUX

CONSOLE

EJECT

149542

Chapter 5 Maintaining the Router

Removing and Installing Front Doors

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Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

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Step 3 Remove the bumpers and pivot blocks from the door as shown in Figure 5-3.

Figure 5-3 Removing the Bumpers and Pivot Blocks

1Bumpers 2Pivot blocks

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Chapter 5 Maintaining the Router

Cleaning or Replacing the Chassis Air Filter

Step 4 Reinstall the hardware to the opposite sides of the front door:

a. Mount pivot blocks to the left side and tighten the screws until snug.

b. Mount the bumpers to the right side and tighten the screws until snug.

Step 5 Attach the front door to the chassis:

a. Remove the hinge pins from the hinges on the right side of the chassis.

b. Align the pivot blocks on the front door with the hinges on the right side of

the chassis and install the hinge pins to hold the door in place (see

Figure 5-2).

c. Close the front door by pressing the latch button, allowing the door latch to

engage with the hinge pins on the chassis.

Step 6 Repeat Step 1 through Step 5 for the bottom door.

Cleaning or Replacing the Chassis Air Filter

The router is equipped a user-serviceable air filter that removes dust drawn into

the router. One time per month (or more often in dusty environments), examine

the air filter for damage and cleanliness.

Caution Damage to the air filter can restrict the airflow, cause overheating in the router,

and degrade EMI performance. Be careful when cleaning and replacing the filter.

Chapter 5 Maintaining the Router

Cleaning or Replacing the Chassis Air Filter

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Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

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Use the following procedure to clean or replace the air filter.

Step 1 Loosen the 4 captive screws on the air filter door and pivot the door open

(Figure 5-4).

Figure 5-4 Opening the Chassis Air Filter Door

ALARM

CSC

FAIL

ENABLED

SFC

Q OC-3/STM-POS

6DS3–SMB P

12DS3–SMB P

OC-48/STM-16-SCPOS

OC-12/STM-4 ATM

FAST ETERNET

ROUTE PROCESSOR

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Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

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Chapter 5 Maintaining the Router

Cleaning or Replacing the Chassis Air Filter

Step 2 Lift up the air filter and carefully slide it out of the door (Figure 5-5).

Caution Be careful not to damage the honeycomb screens on the back of the

air filter door and in the fabric card cage. Damage to the honeycomb

screens can restrict airflow, cause overheating, and affect EMI

performance.

Figure 5-5 Removing the Chassis Air Filter

ALARM

CSC

FAIL

ENABLED

SFC

Q OC-3/STM-POS

6DS3–SMB P

12DS3–SMB P

OC-48/STM-16-SCPOS

OC-12/STM-4 ATM

FAST ETERNET

ROUTE PROCESSOR

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Chapter 5 Maintaining the Router

Removing and Replacing Blower Modules

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Step 3 Visually check the condition of the air filter to determine whether to clean it or

install a new replacement.

•Dirty—You can vacuum or replace the filter.

Caution Do not vacuum the air filter while it is installed in the chassis. You must remove

the air filter completely before you clean it to prevent contaminants from being

drawn into the bays or cage.

•Worn or torn—If the filter appears worn or torn, dispose of it in a responsible

manner and install a replacement air filter (12000/16-FILTER=).

Step 4 Slide the new or cleaned air filter into the air filter door.

Step 5 Close the air filter door and tighten the 4 captive screws.

Caution Align and seat the door carefully to avoid damaging the

EMI-preventive gasket contacts on the door. The air filter door must

be closed and secured at all times to maintain correct

EMI performance.

Removing and Replacing Blower Modules

The blower modules support online insertion and removal (OIR), so you can

remove and install a blower module while the system remains powered on without

presenting an electrical hazard or damage to the system. You can replace a blower

module while the system maintains all routing information and ensures session

preservation.

Caution Although the blower module supports OIR and can be replaced without

interruption to system operation, the system should not operate without a blower

module for more than 3 minutes to prevent overheating.

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