Cisco XR 12406 User Manual

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Cisco XR 12406 Router Installation Guide

March 2009

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Text Part Number: OL-13831-01

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Cisco XR 12406 Router Installation Guide

Preface xi

Changes to This Document xi

Obtaining Documentation and Submitting a Service Request xii

Audience xii

Purpose xii

Installation Guide Organization xiii

Document Conventions xiii

CHAPTER

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1 Cisco XR 12406 Router Overview 1-1

Router Description 1-1

Features 1-5

Physical and Functional Description 1-7

Route Processor 1-7 Performance Route Processor Overview 1-9 PRP Memory Components 1-14

Line Cards 1-21

Multigigabit Crossbar Switch Fabric 1-23 Alarm Cards 1-25 Power Subsystems 1-28 Blower Module 1-37 Chassis Backplane and Maintenance Bus 1-39 Air Filters 1-42 Cable-Management System 1-43

Cisco XR 12406 Router Installation Guide

Contents

Field-Replaceable Units 1-46

Upgrading a Cisco 12000 Series Internet Router to a Cisco XR 12000 Series Router 1-47

Technical Specifications 1-47

CHAPTER

2 Preparing for Installation 2-1

Tools and Equipment 2-2

Safety and Compliance 2-2

General Safety Guidelines 2-3 Compliance and Safety Information 2-4 Preventing Electrostatic Discharge Damage 2-5 Laser Safety 2-7 Lifting Guidelines 2-7

Safety with Electricity 2-8

Installation Site Requirements 2-9

Rack-Mounting Guidelines 2-9 Environmental Guidelines 2-13 Power Connection Guidelines 2-14 Site Wiring 2-20

Unpacking and Repacking the Router 2-21

Transporting a Cisco XR 12000 Series Router 2-22

Site Preparation Checklist 2-22

CHAPTER

3 Installing the Cisco XR 12406 Router 3-1

Required Tools 3-2

Installing a Router 3-2

Installing the Rack-Mounting Brackets—Optional 3-3 Installing Center-Mounting Brackets (optional) 3-5 Installing the Chassis in a Rack 3-8

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Installing the Chassis on a Tabletop or Flat Surface 3-10

Supplemental Bonding and Grounding Connections 3-10

Connecting RP and Line Card Cables 3-14

Connecting Alarm Card Cables 3-17

Connecting to the Console and Auxiliary Ports 3-17

PRP Console Port Signals 3-19 PRP Auxiliary Port Signals 3-19

Installing a Flash Memory Card 3-20

Connecting the PRP to an Ethernet Network 3-22

Connecting to an AC Power Source 3-26

Connecting to a DC Power Source 3-29

Powering On the Router—First Time 3-32

External Network Interface 3-35

Manually Booting the System 3-35

Boot Process Overview 3-35 Starting the Router and Observing Initial Conditions 3-36 Manually Booting the System 3-41

Contents

CHAPTER

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4 Troubleshooting the Installation 4-1

Identifying Startup Problems 4-1

Using the System LEDs to Troubleshoot 4-3

Problem-Solving with Subsystems 4-4

Troubleshooting an AC Power Subsystem 4-6

Troubleshooting a DC Power Subsystem 4-9

Troubleshooting the Processor Subsystem 4-13

Troubleshooting the RP 4-13 Troubleshooting the Line Cards 4-24 Troubleshooting the Alarm Cards 4-27

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Contents

Troubleshooting the Cooling Subsystem 4-31

CHAPTER

5 Maintaining the Router 5-1

Tools and Equipment 5-3

Powering Off the Router 5-3

Removing and Installing the Front Cover 5-4

Removing the Front Cover 5-4 Installing the Front Cover 5-4

Removing and Replacing the Air Filters 5-6

Removing and Replacing the Blower Module 5-8

Troubleshooting the Blower Installation 5-12 Installation Guidelines 5-13

Removing and Replacing an AC Power Entry Module 5-13

Troubleshooting the AC Power Entry Module Installation 5-17

Removing and Replacing an AC PDU 5-19

Removing and Replacing a DC PEM 5-26

Troubleshooting the DC Power Supply Installation 5-30

Removing and Replacing a DC PDU 5-31

Troubleshooting the DC PDU Installation 5-40

Removing and Replacing an RP or a Line Card 5-41

Attaching the Cable-Management Bracket and Connecting Cables 5-46

Removing and Installing a Clock and Scheduler Card, Switch Fabric Card, or Alarm Card 5-50

Removing and Replacing a Clock Scheduler Card 5-50 Removing and Replacing a Switch Fabric Card 5-53 Removing and Replacing an Alarm Card 5-55

Upgrading the RP and Line Card Memory 5-58

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Contents

APPENDIX

NDEX

A Cisco XR 12406 Router Technical Specifications and Warnings A-1

Specifications A-1

Alarm Card Alarm Relay Connector Specifications A-5

Compliance Information A-6

Regulatory, Compliance, and Safety Information A-9

Translated Safety Warnings and Agency Approvals A-9 Electromagnetic Compatibility Regulatory Statements A-9 Compliance Label A-13 Router Performance Upgrades and Model Identification A-14

B Repacking the Router B-1

Transporting and Storing the Router B-1

Shipping Package Overview B-2

Tools and Equipment B-4

Safety Recommendations B-4

Repacking the Router B-4

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Cisco XR 12406 Router Installation Guide

Contents

Cisco XR 12406 Router Installation Guide

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Preface

Revised: March, 2009, OL-13831-01

The Cisco XR 12406 Router Installation Guide provides information related to installation and removal of Cisco XR 12406 Router Chassis.

The preface contains the following sections:

• Changes to This Document

• Obtaining Documentation and Submitting a Service Request

• Audience

• Purpose

• Installation Guide Organization

• Document Conventions

Changes to This Document

Table 1 lists the technical changes made to this document since it was first printed.

Ta b l e 1 Changes to This Document

Revision Date Change Summary

OL-13831-01 March 2009 Added Performance Route Processor-3 (PRP-3) hardware

details. PRP-3 has been introduced in Cisco IOS XR Software Release 3.8.0. PRP-3 will be supported on Cisco IOS XR Software Release 3.8.0 and later releases.

Cisco XR 12406 Router Installation Guide

OL-13831-01

Preface

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s Documentation, which also lists all new and revised Cisco documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.

New in Cisco Product

technical

Audience

The audience for the Cisco XR 12406 Router Installation Guide user documentation are the people who will install and configure a Cisco

XR 12404 Router. The user typically has a substantial background in installing and configuring router- and switch-based Internets but may or may not have experience with Cisco products and supported protocols.

The reader of this documentation should be familiar with electronic circuitry and wiring practices and have experience as an electronic or electromechanical technician.

Purpose

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This installation and configuration guide explains the hardware installation and basic configuration procedures for a Cisco procedures for installing the hardware, creating a basic configuration file, and starting up the router.

XR 12404 Router. It contains

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Preface

Installation Guide Organization

The Cisco XR 12406 Router Installation Guide contains the following chapters, appendix, and index.

• Chapter 1, “Cisco XR 12406 Router Overview”—Presents a high-level

system overview and physical description of the major components of Cisco XR 12406 Router, including the power and cooling systems, Performance Route Processor (PRP), clock and scheduler cards (CSC), switch fabric cards (SFC), and alarm cards, and gives a functional overview.

• Chapter 2, “Preparing for Installation”—Describes safety, site requirements

for power, environmental safety, cabling, rack-mounting, electrostatic discharge (ESD), unpacking, site log, and site preparation checklist.

• Chapter 3, “Installing the Cisco XR 12406 Router”—Gives the procedures

for the initial installation and setup of Cisco XR 12406 Router.

• Chapter 4, “Troubleshooting the Installation”—Explains how to identify and

solve problems that might occur during installation.

• Chapter 5, “Maintaining the Router”—Explains safety at the

field-replaceable unit (FRU) level, removal and replacement procedures for field-replaceable units and assemblies, and associated procedures to troubleshoot and verify FRU and device operation.

• Appendix A, “Cisco XR 12406 Router Technical Specifications and

Warnings”—Provides technical specifications, connector cable

specifications, regulatory statements, and translated safety warnings for the Cisco XR 12406 Router.

• Appendix B, “Repacking the Router”

• Index—Contains a keyword and subject index of pertinent terms and

information.

Document Conventions

This publication uses the following conventions:

• Ctrl represents the key labeled Control. For example, the key combination

Ctrl-z means hold down the Control key while you press the z

Command descriptions use these conventions:

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key.

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Preface

• Examples that contain system prompts denote interactive sessions, indicating

the commands that you should enter at the prompt. The system prompt indicates the current level of the EXEC command interpreter.

For example, the prompt router> indicates that you should be at the user level, and the prompt

router# indicates that you should be at the privileged

level. Access to the privileged level usually requires a password. Refer to the related software configuration and reference documentation for additional information.

• Commands and keywords are in boldface font.

• Arguments for which you supply values are in italic font.

• Elements in square brackets ([ ]) are optional.

• Alternative but required keywords are grouped in braces ({ }) and separated

by vertical bars (|).

Examples use these conventions:

• Terminal sessions and sample console screen displays are in screen font.

• Information you enter is in boldface screen font.

• Nonprinting characters, such as passwords, are in angle brackets (< >).

• Default responses to system prompts are in square brackets ([ ]).

• Exclamation points (!) at the beginning of a line indicate a comment line.

Caution Means be careful. You are capable of doing something that might result in

equipment damage or loss of data.

Note Means reader take note. Notes contain helpful suggestions or references to

materials not contained in this manual.

Timesaver Means the described action saves time. You can save time by performing the

action described in the paragraph.

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Preface

Warning

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

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Preface

xvi

Cisco XR 12406 Router Installation Guide

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Cisco XR 12406 Router Overview

This chapter provides an overview of the Cisco XR 12406 Router. It contains physical descriptions of the router hardware and major components, and functional descriptions of the hardware-related features.

Router Description

The Cisco XR 12406 Router, shown in Figure 1-1 and Figure 1-3, is a member of the Cisco XR 12000 Series Router family. The Cisco XR 12406 Router scales the Internet Service Provider edge from speeds of T3/E3 (44.7/34.4 Mbps) up to OC-192/STM-64 or 10GE (10 Gbps).

Note Illustrations are shown without the front door for clarity.

CHA P T E R

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Cisco XR 12406 Router Installation Guide

1-1

Chapter 1 Cisco XR 12406 Router Overview

Router Description

Figure 1-1 Cisco XR 12406 Router—Front View (with PRP installed)

1 2

8 3

T C

R O L S

X U

12000

S E

R I

E S

B IT

L L

5 4

CONSOLE

J R

X N I

T L

I I M

GIGABIT ROUTE PROCESSOR

1 Line card slots (five) 5 Alarm card slots (two)

2 Route processor slot 6 Power module bays (two)

3 Blower module 7 CSC slots (2)

4 SFC slots (3) 8 Cable management bracket

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1-2

101344

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Chapter 1 Cisco XR 12406 Router Overview

Router Description

Figure 1-2 Cisco XR 12406 Router—Front View (with PRP-3 installed)

1 2

8 3

ISC

12000

E R

I E

A B

O U

T E

A NK I

N I

A D

G I

ETH 0

ETH 1

T S 0

BI T

S 1

RESE

C O

R F

R M

272391

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1-3

Router Description

Figure 1-3 Cisco XR 12406 Router—Rear View

HIGH SPEED BLOW

Chapter 1 Cisco XR 12406 Router Overview

2 5

1 Blower module 4 Air exhaust vents

2 Blower module LEDs 5 PDU (behind Blower module; AC

PDU shown)

3 Blower module handle —

With a chassis height of 18.5 inches (46.9 cm), four Cisco XR 12406 Routers can be installed in a single standard 7-foot (2.15-m) equipment rack.

Cisco XR 12406 Router supports system software downloads for most Cisco XR IOS software upgrades, which enables you to remotely download, store, and boot from a new Cisco XR IOS image.

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Chapter 1 Cisco XR 12406 Router Overview

Features

Cisco XR 12406 Router has the following key features:

• Route Processor (PRP-2)—Slot 5 (bottom slot) is the recommended slot for

the first route processor. When the router is equipped with a redundant route processor, it can be installed in any of the five regular line card slots.

• Line Cards—Up to five OC-192 line cards, four if redundant route processors

are installed. These slots support the online insertion and removal (OIR) feature so installed cards are hot-swappable: A failed card can be removed and replaced with the router powered on.

• Clock and Scheduler Cards (CSCs) and Switch Fabric Cards (SFCs)—Two

dedicated hot-swappable slots for CSCs; three dedicated hot-swappable slots for SFCs.

Note When operating your router with a single CSC, the second CSC slot must

have a CSC blank filler (MAS-GSR6-CSCBLNK=) installed to ensure EMI compliance.

Features

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• Two dedicated alarm card slots (for 1+1 redundancy)

• Alarm and Illumination—Alarm and illumination for operating ranges in the

card cage, clock and scheduler card, and switch fabric card bays.

• Two hot-swappable AC-input power supplies or DC-input power entry

modules (PEMs).

Note When operating your router on a single AC-input power supply or

DC-input PEM, the second power module bay must have a blank filler (MAS-GSR-PWRBLANK=) installed to ensure EMI compliance.

• All power modules and other field replaceable units (FRUs), except for the

air blower module and the power distribution unit (PDU), can be removed from the front of the chassis.

• All source power connections are located at the rear of the chassis on the PDU

(see

Figure 1-3).

• A new stylish front door hides router cabling and can be installed to open

from the right side or left side to give you total flexibility.

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Features

Chapter 1 Cisco XR 12406 Router Overview

• Network Equipment Building Systems—Cisco XR 12406 Router complies

with the Network Equipment Building System (NEBS) Criteria Level 3 requirements defined in SR-3580 for flammability, structural, and electronics compliance.

• Electromagnetic Compatibility and Electrostatic Discharge Compliant— The

Cisco

XR 12406 Router complies with emissions, immunity, and

electrostatic discharge (ESD) standards for both product and packaging.

• Bonding and Grounding—Bonding and grounding for safety, circuit

protection, noise currents, reliability, and operations compliance.

• Environmental Monitoring—the Cisco XR 12406 Router complies with

environmental monitoring standards for operating temperature and humidity, as well as handling temperature and humidity (except for heat dissipation).

• Shock and Vibration—the Cisco XR 12406 Router has been shock- and

vibration-tested for operating ranges, handling, and earthquake standards to NEBS (Zone 4 per GR-63-Core). These tests have been conducted in earthquake environment and criteria, office vibration and criteria, transportation vibration and criteria, and packaged equipment shock criteria.

• Fiber Cable Management—Fiber cable management with support for

high-density fiber Fast Ethernet (FE) ports.

1-6

• Current 1.275-inch pitch line cards will fit in the line card cage with the

addition of a front panel adapter cover. The line card adapter cover is included with the 1.275-inch line card.

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Chapter 1 Cisco XR 12406 Router Overview

Physical and Functional Description

The following are the main components that make up the Cisco XR 12406 Router:

• One route processor with a second (redundant) route processor option

• Up to 5 line cards (4 if there are redundant route processors)

• 2 clock scheduler cards (CSCs)

• 3 switch fabric cards (SFCs)

• 2 alarm cards

• 2 power modules

• Backplane and maintenance bus

• Blower module

• 2 air filters

These components and their functions are described in this section. See Chapter 5,

“Maintaining the Router” for instructions to remove and replace the FRUs.

Physical and Functional Description

Route Processor

The route processor for the Cisco XR 12406 Router is the Performance Route Processor (PRP-2). For detailed information about the Performance Route Processor, refer to the Cisco document, Performance Route Processor Installation and Configuration Guide.

The PRP-2 and PRP-3 performs the following primary functions:

• Executes routing protocol stacks

• Performs all protocol communications with other routers

• Builds and distributes forwarding information to all line cards

• Uploads the operating system software images to all installed line cards

• Provides out-of-band system console and auxiliary ports and an Ethernet port

• Monitors and manages the power and temperature of system components

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during power-up

for router configuration and maintenance

such as line cards, power supplies, and fans

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Physical and Functional Description

The Cisco PRP-2 and PRP-3 delivers all these functions with enhanced performance and capabilities. It also delivers the following feature enhancements (depending on the software version running):

• Gigabit Ethernet management port

• Hard-drive support (optional part)

• BITS input ports

• 1 GB compact image Flash memory support (optional part)

• Memory scalability up to 4 GB with PRP-2 and up to 8 GB with PRP-3.

The PRP-2 and PRP-3 communicates with the line cards either through the switch fabric or through the MBus. The switch fabric connection is the main data path for routing table distribution as well as for packets that are sent between the line cards and the PRP. The MBus connection allows the PRP-2 and PRP-3 to download a system bootstrap image, collect or load diagnostic information, and perform general, internal system maintenance operations.

The PRP-2 can be designated as either the Designated System Controller (DSC) or the Secure Domain router (SDR).

The Designated System Controller (DSC) performs the following functions:

Chapter 1 Cisco XR 12406 Router Overview

1-8

• Implements control plane operations for the chassis

• Monitors temperature and voltage

• Monitors line cards

• On boot up, the first card to become active is designated as the DSC.

The Secure Domain Router (SDR) controls domain security features independent of any other SDRs on the network.

In addition to the functionality listed for the PRP-2, PRP-3 provides the following specific functions:

• Reduced boot time.

• Increased overall scalability.

• Improved memory access rates and scale.

• Improved CPU performance through dual 1.3-GHz PPC processor cores.

• Improved packet processing using hardware-based acceleration.

• 10-G bandwidth backplane connectivity.

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Chapter 1 Cisco XR 12406 Router Overview

Physical and Functional Description

• Support for all 124xx and 128xx chassis, except low speed fabric (2.5G).

• New ROMMON that supports IPv4 network configuration directly.

Performance Route Processor Overview

The performance route processor (PRP-2) uses a Motorola PowerPC 7457 CPU that runs at an external bus clock speed of 133 MHz and has an internal clock speed of 1.3 GHz.

Figure 1-4 identifies the slots, ports, and LEDs on the PRP front panel.

Figure 1-4 Performance Route Processor-2 (PRP-2) Front Panel

ACT

SIG

ACT

DATA

SLOT-1

SLOT-0

LINK

Ta b l e 1-1 Performance Route Processor-2 (PRP-2) Front Panel Hardware Components

SIG

DATA

LINK

ETH 1ETH 0

BITS 1BITS 0

CONSOLE ETH 2AUX

RESET

PERFORMANCE ROUTE PROCESSOR 2

101104

1 PCMCIA flash disk slots (shown with cover in

4 Console serial port

place) and slot LEDs

2 RJ-45 Ethernet ports and data status LEDs 5 Reset button

3 Auxiliary serial port 6 Alphanumeric messages

Figure 1-5 Performance Route Processor 3 (PRP-3) Front Panel

T A

INK

CONSOLE

AUXBITS 1BITS 0ETH 1ETH 0

1 3 4 52

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RESET

PERFORMANCE RP 3

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Physical and Functional Description

Ta b l e 1-2 PRP3 Front Panel Hardware Components Detail

Numeric Callout Hardware Components

1 Ejecter Lever

2 Handle

3 External Compact Flash

4 Reset button

5 Alphanumeric LEDs

PRP-3 is the route processor for the Cisco XR 12404 and 12804 Router chassis running Cisco IOS XR Software Release 3.8.0 or a later release. The PRP-3 is available as product number PRP-3 or PRP-3= for a primary route processor and is available as PRP-3/R for a redundant route processor. PRP-3 has significant improvements over PRP-2. These improvements include increased speed, improved scalability, higher system memory, faster packet processing. Because PRP-3 does not support Cisco IOS, the bootflash memory no longer exists in PRP-3. PRP-3 ROMMON has software intelligence to download a Cisco IOS XR image without the support of bootflash memory.

Chapter 1 Cisco XR 12406 Router Overview

Note PRP-3 supports Cisco XR 12404 (10 G per slot fabric) and Cisco XR 12804 (40

G per slot fabric) Router chassis only. PRP-3 does not support Cisco XR 12004, 12006, 12010, and 12016 Router chassis (2.5 G low-speed fabric).

PRP PCMCIA Card Slots and Status LEDs

Two PCMCIA card slots (slot 0 and slot 1) provide the PRP with additional flash memory capacity. All combinations of different flash devices are supported by the PRP. You can use ATA flash disks, Type 1 or Type 2 linear flash memory cards, or a combination of the two.

Note The PRP only supports +5.2 VDC flash memory devices. It does not support

+3.3 VDC PCMCIA devices.

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Chapter 1 Cisco XR 12406 Router Overview

Status LEDs (Slot-0 / Slot-1) indicate when the flash memory card in that slot is accessed (see

Figure 1-4). Each slot has an eject button (located behind the cover)

to remove a flash card from the slot.

Note PRP-3 does not have PCMCIA slots (slot 0 and slot 1). PRP-3 has an external

CompactFlash (disk0:) that replaces the PCMCIA slots.

PRP Ethernet Ports and Status LEDs

The PRP has two 8-pin media-dependent interface (MDI) RJ-45 ports for either IEEE 802.3 10BASE-T (10 Ethernet connections. These ports are labeled ETH 0 and ETH 1.

The transmission speed of the Ethernet port is not user-configurable. You set the speed through an autosensing scheme on the PRP which is determined by the network that the Ethernet port is connected to. However, even at an autosensed data transmission rate of 100 Mbps, the Ethernet port can only provide a usable bandwidth of substantially less than 100 Mbps. You can expect a maximum usable bandwidth of approximately 20 Mbps when using an Ethernet connection.

Physical and Functional Description

Mbps) or IEEE 802.3u 100BASE-TX (100 Mbps)

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The following LEDs on the front panel indicate traffic status and port selection (

Figure 1-6):

• LINK, EN, TX, RX—Indicate link activity (LINK), port enabled (EN), data

transmission (TX), and data reception (RX).

• PRIMARY—Indicates which Ethernet port is selected (ETH 0 or ETH 1).

Note Because both ports are supported on the PRP, ETH 0 is always on. ETH 1

lights when it is selected.

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Physical and Functional Description

Figure 1-6 PRP-2 Port Activity LEDs—Partial Front Panel

Chapter 1 Cisco XR 12406 Router Overview

ETH 1ETH 0

SLOT-1

SLOT-0

PRIMARY

Figure 1-7 PRP-3 Port Activity LEDs—Partial Front Panel

DATA

LINK

ETH 1ETH 0

PRP Auxiliary and Console Ports

The auxiliary and console ports on the PRP are EIA/TIA-232 (also known as RS-232) asynchronous serial ports. These ports connect external devices to monitor and manage the system.

• The auxiliary port—A (male) plug that provides a data terminal equipment

(DTE) interface. The auxiliary port supports flow control and is often used to connect a modem, a channel service unit (CSU), or other optional equipment for Telnet management.

• The console port—A (female) receptacle that provides a data

circuit-terminating equipment (DCE) interface for connecting a console terminal.

LINK

DATA

SIG

BITS 0

70693

PRIMARY

SIG

ACT

LINK

ACT

BITS 1 AUX CONSOLE

272388

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PRP-3 LEDs

The PRP-3 has the following LED indicators:

• Two Ethernet port LEDs used in conjunction with each of the three RJ-45

Ethernet connectors:

–

• Two BITS port LEDs used in conjunction with each of the two BITS ports:

–

Note BITS feature is not supported in Release 3.8.0.

• One auxiliary port (AUX) and one console port (CONSOLE) LED:

–

Physical and Functional Description

LINK—Indicates link activity

DATA—Indicates data transmission or reception

SIG—Indicates carrier signal available

ACT—Indicates that the interface is active

AUX—Used as a backup for the command outputs on the Console.

CONSOLE—Used for configuring the router by connecting an RJ-45 cable to the console terminal. The router can be configured through the console terminal.

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Physical and Functional Description

PRP Memory Components

This section describes various types of memory used on the PRP to support router functions. and Figure 1-8 shows the location on the PRP board.

Ta b l e 1-3 PRP-2 Memory Components

Ty pe Size Quantity Description Location

SDRAM

2 GB (default) or 4 GB (optional)

SRAM

NVRAM

2 MB (fixed) — Secondary CPU cache memory functions —

2 MB (fixed) 1 System configuration files, register settings,

HDD 40 GB 1 Contains log and crash information for

Flash memory

2 GB or 4 GB (optional) Compact Flash

4 MB Boot ROM

Flash disks5 2 GB (default) or 4 GB (optional)

1 GB CF

1. Default SDRAM configuration is 2-GB for PRP-2. Bank 1 (U15) must be populated first. You can use one or both banks to configure SDRAM combinations of 2 GB and 4 GB for the PRP-2. 1.5-GB configurations.and DIMM devices that are not from Cisco are not supported.

2. If both banks of the PRP-2 are populated, bank 1 and bank 2 must contain the same size DIMM.

3. SRAM is not user configurable or field replaceable.

4. NVRAM is not user configurable or field replaceable.

5. ATA Flash disks are supported in the PRP-2.

6. Optional PRP-2 hardware. Compact disks that are not from Cisco are not supported.

Table 1-3 provides a quick reference of the different types of memory,

1 or 2 2-GB or 4-GB DIMMs (based on desired

SDRAM configuration) for main Cisco IOS

U15 (bank 1) U18 (bank 2)

XR software functions

—

and logs

—

specific Cisco IOS XR versions.

1 Contains Cisco IOS XR boot image

P3 (bootflash), crash information, and other user-defined files

1 Stores the ROMMON minimum boot image

(MBI).

1 or 2 Contains Cisco IOS XR software images,

system configuration files, and other user-defined files on up to two flash disks

1 Contains large Cisco IOS XR software

Flash disk

slot 0 and

slot 1

— images

1-14

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Figure 1-8 PRP-2 Memory Locations

2-40

P R

-P D H

_ _ V

R 1

-0 60

-2 0 0 8

THIS SIDE TO FACEPLATE

Physical and Functional Description

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EJEC

SLO

A D

LINKD

-1 T

T-0

LIN

ETH 1ETH 0

SIGA

CONSOLE ETH 2AUX

BITS 1BITS 0

7 8 9 105 6

ETH 2

PERFORMANCE ROUTE PROCESSOR 2

RESET

101105

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Physical and Functional Description

Figure 1-9 PRP-3 Memory Locations

Chapter 1 Cisco XR 12406 Router Overview

1 SDRAM DIMM: Bank 1 - Socket number U8

2 SDRAM DIMM: Bank 2 - Socket number U10

3 External CompactFlash

4 Hard disk (80 GB)

5 Internal CompactFlash

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Physical and Functional Description

Ta b l e 1-4 PRP-3 Memory Components

Ty pe Size Quantity Description Location

SDRAM

NVRAM

2 GB (Default) for each DDR2 DRAM for a total system memory of 4 GB, option for upgrade to total system memory of 8 GB (4 GB each).

2 Two 2-GB default DDR2

DRAM for main CiscoIOSXR software functions. Provision for optional upgrade to 4 GB also possible to provide total system memory of 8 GB.

2 MB (fixed) 1 System configuration files,

U8 (bank

1) U10 (bank

—

Flash memory 2 GB (default) or 4 GB

(optional) Flash disks

2 (Internal and External Compact

Contains Cisco IOS XR software images, system configuration files, and other user-defined files on two CompactFlash.

Internal and External Compact

Flash

Flash)

Flash boot ROM

HDD

8 MB 1 Flash EPROM for the ROM

monitor program boot image

80 GB SATA 1 Contains log and crash

—

— information for specific Cisco

IOS XR versions

1. Default SDRAM configuration is a total of 4 GB (2 x 2GB) system memory for PRP-3. Bank 1 (U15) must be populated first. You can use one or both banks to configure DDR2 DRAM combinations of 2 GB or 4 GB for the PRP-3. DIMM devices that are not from Cisco are not supported.

2. If both banks of the PRP-3 are populated, bank 1 and bank 2 must contain the same size DIMM.

3. NVRAM is not user configurable or field replaceable.

4. ATA Flash disks are supported in the PRP-3.

5. PRP-3 provides an onboard internal CompactFlash and also an external CompactFlash. The external CompactFlash in PRP-3 replaces the two PCMCIA slots (slot0 and slot1) of PRP-2.

6. Hard disk drives that are not from Cisco are not supported.

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Physical and Functional Description

PRP SDRAM

Chapter 1 Cisco XR 12406 Router Overview

The PRP uses Error Checking and Correction (ECC) Synchronized Dynamic Random Access Memory (SDRAM) to store routing tables, protocols, network accounting applications, and to run Cisco

IOS software.

Table 1-5 lists the DRAM configurations for the PRP. If you are using:

• One DIMM—Bank 1 (U15) must be populated first.

• Two DIMMs—You cannot mix memory sizes; both banks must contain the

same size DIMM.

Ta b l e 1-5 PRP-2 DRAM Configurations

Total SDRAM

SDRAM Sockets Number of DIMMs

Total SDRAM

2 GB

SDRAM Sockets Number of DIMMs

U15 (bank 1) U18 (bank 2)

One 2 GB DIMM or Two 2 GB DIMMs

4 GB U15 (bank 1)

U18 (bank 2)

One 4 GB DIMM or Two 4 GB DIMMs

1. Default shipping configuration.

1-18

Caution DRAM DIMMs must be 3.3-volt, 60-nanosecond devices only. Do not attempt to

install other devices in the DIMM sockets. To prevent memory problems, use the memory products approved by Cisco, listed in Table 1-5.

PRP-3 provides more system memory than PRP-2. PRP-3 is shipped with 2 GB of system memory in each DDR2 DRAMs, for a total of 4 GB and provides an upgrade option for a total of 8 GB (4 GB x 2 DRAM).

Note The two DIMMs must be of the same sizes. Do not use two different DIMM sizes

together.

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Ta b l e 1-6 PRP3 DDR2 DRAM Configuration

Total SDRAM SDRAM Sockets Number of DIMMs

4 GB U8 (bank 1)

8 GB U8 (bank 1)

PRP SRAM

Static Random Access Memory (SRAM) provides 2 MB of secondary CPU cache memory. Its principal function is to act as a staging area for routing table updates, and for information sent to and received from the line cards. SRAM is not user-configurable and cannot be upgraded in the field.

PRP NVRAM

Non-volatile Random Access Memory (NVRAM) provides 2 MB of memory for system configuration files, software register settings, and environmental monitoring logs. Built-in lithium batteries retain the contents of NVRAM for a minimum of 5 years. NVRAM is not user configurable and cannot be upgraded in the field.

Physical and Functional Description

Two 2 GB DIMMs

U10 (bank 2)

Two 4 GB DIMMs

U10 (bank 2)

PRP Flash Memory

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Use flash memory to store multiple Cisco IOS XR software and microcode images that you can use to operate the router. You can download new images to flash memory over the network (or from a local server) to replace an existing image, or to add it as an additional image. The router can be booted (manually or automatically) from any of the stored images in flash memory.

Flash memory also functions as a Trivial File Transfer Protocol (TFTP) server to allow other servers to boot remotely from the stored images, or to copy them into their own flash memory.

The system uses two types of flash memory on PRP-2:

• Onboard flash memory (called bootflash)—Contains the Cisco IOS boot

image

• Flash memory disks (or cards)—Contain the Cisco IOS software image

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Physical and Functional Description

Table 1-7 lists supported flash disk sizes and Cisco part numbers.

Ta b l e 1-7 Supported Flash Disk Sizes

Chapter 1 Cisco XR 12406 Router Overview

PRP-3 Compact Flash

Flash Disk Size

2 GB

Part Number

MEM-FD2G=

4 GB MEM-FD4G=

1. 4 GB is supported with 2 GB mode prior to Release 3.8.0.

2. Default shipping configuration.

PRP-3 provides more flash memory than PRP-2. PRP-3 uses flash memory to store Cisco IOS XR software images. PRP-3 includes a default internal flash memory of 2 GB and also has an external flash memory of 2 GB. A flash memory upgrade option is also available for a total of 8 GB (2 x 4 GB).

PRP-2 and PRP-3 compactflashes are not compatible with each other and hence PRP-2 compactflash cannot be used in PRP-3 and vice versa. PRP-3 uses Multiword DMA to access the compactflash device, a PRP-2 compactflash does not support this access type.

Note The PRP-3 external CompactFlash disk replaces the two PCMCIA slots

of PRP-2. The external CompactFlash disk can be installed or removed from the PRP-3 front panel. The internal CompactFlash disk memory is denoted as compactflash, while the external CompactFlash disk is denoted as disk0:.

1-20

Ta b l e 1-8 PRP-3 CompactFlash Disk Sizes

Flash Disk Size Part Numbers

2 GB FLASH-PRP3-2G(=)

4 GB FLASH-PRP3-4G(=)

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Line Cards

The Cisco XR 12406 Router is shipped pre-installed with the number and type of line cards that you ordered. Line cards and route processors can be installed in two basic combinations to support route processor redundancy and a variety of physical network media:

• Nonredundant route processor—One route processor and up to five

CiscoXR12000 Series Router line cards.

• Redundant route processors—Two route processors and up to four

CiscoXR12000 Series Router line cards.

Line cards can be installed in any slot—zero (0) through five (5)—in the card cage. Slot number 5 is the recommended default route processor slot. Single-mode and multimode line cards are shown in

Note Refer to the current s software release notes for the most up-to-date list of

supported line cards (see

Request” section on page -xii).

Line Cards

Figure 1-10.

“Obtaining Documentation and Submitting a Service

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Line cards provide the interfaces to the router’s external physical media. External connections are made from the front of the chassis to the connectors on the line card face plates. The line cards communicate with the route processor and exchange packet data with each other through the switch fabric cards in the switch fabric and alarm card cage.

Caution Unoccupied card slots in the line card and route processor card cage must have a

blank filler panel installed (12000-WIDE-BLANK=) for electromagnetic compatibility (EMC) and to ensure proper air flow through the chassis. When the faceplate of a line card does not completely fill the card slot opening, a narrow card filler panel must be installed (ACS-GSR16-LCFILL=).

A cable-management bracket attaches to the faceplate of each line card to manage and organize the network interface cables connected to the individual ports on the line card.

Line cards installed in the router support online insertion and removal (OIR), which means you can remove and replace a line card while the router remains powered on.

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Line Cards

Chapter 1 Cisco XR 12406 Router Overview

Note For instructions on removing, replacing, and configuring the line cards, see the

configuration note shipped with each line card when ordered as an FRU.

Figure 1-10 Sampl e Lin e Cards

Single Mode

ACTIVE CARRIER RX PKT

Q OC-3/STM-1 SM IR POS

Ejector lever

Port 0

Status LEDs

Port 1

Port 2

Port 3

Multimode

ACTIVE CARRIER RX PKT

Q OC-3/STM-1 MM POS

160-pin backplane signal connector

1-22

Alphanumeric

LED display

Ejector lever

Front view Rear view

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Multigigabit Crossbar Switch Fabric

The Cisco XR 12406 Router switch fabric circuity provides synchronized gigabit-speed interconnections for the line cards and the route processor. The switch fabric circuitry resides in five fabric card slots: two for CSCs; three for SFCs (

Figure 1-11).

Figure 1-11 Clock and Scheduler and Switch Fabric Card Bays

EJECT

SLOT-1

RESET

SLOT-0

CISCO 12000

S ER

H R

IE S

AUX

CSC

Alarm

cards (2)

COLL

CONSOLE

RJ-45

LINK

MII

IT R

O UT

C ESS

O R

SFC

Line Cards

57084

Switch Fabric Card Types

The CSCs are installed in the half-width slots labeled CSC 0 and CSC 1 on the lower left side of the chassis, located directly beneath the route processor and line card cage and directly above the alarm card bays. The three SFCs are installed in the half-width slots labeled SFC the chassis.

Note To operate the Cisco XR 12406 Router, you must have at least one CSC card

installed, in addition to SFC and alarm cards.

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0, SFC 1, and SFC 2 on the lower right side of

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Line Cards

Chapter 1 Cisco XR 12406 Router Overview

The CSC contains the following functionality:

• System clock—The system clock synchronizes data transfers between line

cards or between the route processor and a line card, through the switch fabric. In systems with redundant CSCs, the two system clocks are synchronized so that if one system clock fails, the other clock takes over. The system clock signal is sent to all line cards, the route processor, and switch fabric cards.

• Scheduler—The scheduler handles requests from the line cards for access to

the switch fabric. When the scheduler receives a request from a line card for switch fabric access, the scheduler determines when to allow the line card access to the switch fabric.

• Switch fabric—The switch fabric carries the user traffic between line cards or

between the route processor and the line cards. The switch fabric card contains only the switch fabric circuitry and receives scheduling information and system clock information from the CSC.

The SFC contains only the switch fabric circuitry, which carries user traffic between line cards or between the route processor and the line cards. The SFC receives scheduling information and the system clock sent from the CSC.

Switch Fabric Switching Capacity and Router Type

The Cisco XR 12406 Router is based on a 10-Gbps switch fabric, where each CSC or SFC provides a 10-Gbps full-duplex connection to each line card in the system. The 10-Gbps switch fabric consists of the Clock and Scheduler Card (product number GSR6-CSC= for original fabrics, and 12406E-CSC= for enhanced fabric versions) and the Switch Fabric Card (product number GSR6-SFC= for original fabrics, and 12406E-SFC= for enhanced fabric versions). The 10-Gbps switch fabric cards are labeled simply CSC and SFC.

Note You cannot mix 2.5-Gbps switch fabric cards and 10-Gbps switch fabric cards in

a chassis. The router will not operate with a mix of switch fabric card types.

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Switch Fabric Redundancy

Equipping the router with two CSCs provides data path, scheduler, and reference clock redundancy. The interfaces between the line cards and the switch fabric are monitored constantly. If the router detects a loss of synchronization (LOS), it automatically activates the data paths of the redundant CSC, and data flows across the redundant path. The switch to the redundant CSC occurs within 0.5 second, with little or no loss of data.

Note The enhanced Cisco XR 12406 chassis (XR-12000/6 configured with 12406/120

fabric option) ships with redundant CSC which is required to maintain High Availability for the system.

Alarm Cards

The Cisco XR 12406 Router has two alarm card slots (Figure 1-12). Each alarm card performs the following function or indicates the following condition:

• Alarm output

Line Cards

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• CSC status

• SFC status

• Alarm card status

• Power source and power entry module status

• Alarm relay contacts

The entire alarm function has been implemented on redundant alarm cards with OIR maintenance (hot-swappable) functionality.

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Line Cards

Chapter 1 Cisco XR 12406 Router Overview

Figure 1-12 Alarm Card Features

1 MBus status LED 5 Major alarm LED

2 CSC status LEDs (two) 6 Minor alarm LED

3 SFC status LEDs (three) – Alarm relay contact connector

4 Critical alarm LED —

Note The Cisco XR 12406 Router must be populated with two alarm cards, to meet

EMI standards.

Alarm Output Function

MBUS

CSC

ENABLED

FAI L

01 1 2

SFC

CRITICAL

MAJOR

1 432 5 6

MINOR

ALARM

66170

1-26

The alarm output function consists of a group of relays, LEDs, and their associated drivers connected to an output port on the MBus module.

The alarm output function is controlled by the software on the route processor. When a signal is received from the route processor, the MBus module on the alarm card activates specific relays to signal an alarm condition. There are three alarm condition severity levels: critical, major, and minor. The critical, major, and minor LEDs are paired for redundancy to protect against a single failed LED.

Note Alarm cards for some Cisco XR 12000 Series Router have both audible and

visible alarm indicators. The alarm card for the Cisco

XR 12406 Router provides

only visible alarm indicators as local alerts to unusual conditions in the router.

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The Cisco IOS XR software running on the route processor determines whether a given alarm condition is a critical, major, or minor alarm. Typing the show commands sh gsr table and sh env all gives you the table of limits and current readings for the LEDs.

Clock and Scheduler Card and Switch Fabric Card Status

The alarm card provides OK and FAIL indications for all clock and scheduler cards and switch fabric cards in the system. Redundant signals from the fabric cards are brought out to the LEDs on each alarm card. The alarm card does not control how these LEDs are used.

The MBus auxiliary power supply consists of a 50W DC-DC power supply and some current-sharing circuitry. Because the alarm card itself is powered by this supply, the on-board MBus module can report problems with the supply only when the redundant alarm card is in the chassis and providing MBus power.

Alarm Card Status

The ENABLED/FAIL pair of LEDs labeled MBUS indicate the status of the alarm card. The green ENABLED LED indicates that the MBus module on the alarm card is operating properly. The yellow FAIL LED indicates that the alarm card has detected an error in itself or with the MBus power supply.

Line Cards

Power Source Monitoring

The alarm card monitors the power modules and signals when there is a condition outside the normal range of operation. It discloses problems such as the following:

• Power source voltage is not being provided to a component

• A fault exists in the power source or power module

• Output voltage—Voltage monitor signal is outside the allowable range

• Output current—Current monitor signal is outside the allowable range

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Line Cards

Alarm Relay Contact Connector

The 9-pin D-type alarm relay contact connector on the faceplate of the alarm card (see

Figure 1-12) is used to connect external alarm indication equipment to the

router so that alarm indicator signals in the router can be repeated elsewhere outside the router.

The pins on this connector are tied directly to the critical, major, and minor alarm relay contacts (normally open, normally closed, and common). Any event that causes one of the alarm LEDs on the alarm card faceplate to go on also activates the corresponding relay contact closure. The relay interface is rated at a maximum of 2A, 60V, or 50VA, whichever is greater.

Because alarm contact cables are entirely dependent on site-specific circumstances, alarm connector cables are not available from Cisco. For information about alarm connector wiring requirements and the pinout for the alarm connector interface, see the

Specifications” section on page A-5.

Power Subsystems

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“Alarm Card Alarm Relay Connector

1-28

The Cisco XR 12406 Router can be powered by either an AC or DC power subsystem, as described in the following sections:

• AC Power Subsystem, page 1-29

• DC Power Subsystem, page 1-33

• Power Distribution, page 1-37

Note The Cisco XR 12406 Router can be either AC powered or DC powered; the router

cannot accept two different types of power modules at the same time.

Note The enhanced Cisco XR 12406 chassis (XR-12000/6 configured with 12406/120

fabric option) ships with a redundant power supply, which is required to maintain high availability for the system.

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Note A Cisco XR 12406 Router operating from an AC power source can be converted

to operate from a DC power source, and vice versa. The conversion can be done in the field, but the system must be powered down.

AC Power Subsystem

The AC power subsystem consists of the following system components:

• AC PDU (one)

• AC-input power supplies (one for nonredundant operation; two for redundant

operation)

Caution To ensure that the chassis configuration complies with the required power

budgets, use the on-line power calculator. Failure to properly verify the configuration may result in an unpredictable state if one of the power units fails. Contact your local sales representative for assistance.

Line Cards

AC PDU

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Facility AC power connects to AC-powered the Cisco XR 12406 Router though the AC PDU on the chassis rear panel (

Figure 1-13).

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Chapter 1 Cisco XR 12406 Router Overview

Figure 1-13 AC Power Distribution Unit

1-30

1 Captive screw 4 AC power distribution unit

2 AC power cord receptacle A 5 Guide pin

3 AC power cord receptacle B 6 Blower module connector

Depending on whether the router is configured for nonredundant or redundant power operation, the router ships with either one or two 14-foot (4.3-m) AC power cords to connect the PDU to the facility AC power source. AC power cords with different source AC power plugs are available. (See

Note For true redundancy, connect each power supply to a separate power circuit

Figure 2-3 on page 2-16.)

protected by its own circuit breaker.

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AC-Input Power Supply

The AC-input power supply is a removable power module that installs in one of the bottom two bays on the front of the chassis (see modules support the OIR feature and are hot-swappable (Figure 1-14).

Figure 1-14 AC-Input Power Supply

Line Cards

Figure 1-1). These power

57916

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2 5

1 AC-input power supply 4 Release levers captive screws

2 Handle 5 LEDs

3 Power standby switch —

Note When operating your router on a single power module, the second power module

bay must have a blank filler (MAS-GSR-PWRBLANK=) installed to ensure EMI compliance.

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An AC-input power supply has the following features (see Figure 1-14):

• Original series Cisco XR 12406 Routers: A power factor corrector (PFC)

allows the power supply to accept AC power source voltage from an AC power source operating from 100 to 120 America, and a range of from 185 to 264

VAC 20-amp service in North

VAC 16-amp service in an

international environment.

• Enhanced series Cisco XR 12406 Routers: Supports 220 VAC only which

requires 20-amp service in North America, and 16-amp service in an international environment.

• Each AC-input power supply weighs approximately 14 pounds (6.4 kg), and

can deliver up to 1400

W for original versions, or up to 1950 W for enhanced

versions of the router.

• Each AC-input power supply requires a dedicated 20A service in North

America (16

• A power standby switch on the faceplate temporarily disables the DC output

A international).

power circuitry in the AC-input power supply.

1-32

Note This switch does not interrupt the incoming AC power in the AC-input

power supply. Portions of the power supply circuitry are still under AC power as long as AC power is connected to the router.

• A handle is provided for ease in removing and replacing the power supply.

• Captive screws on the power supply ejector levers secure it in the power

supply bay.

• Two LEDs on the faceplate to provide status information. Tabl e 1-9

summarizes the function of these indicators.

Ta b l e 1-9 AC-Input Power Supply LED indicators

LED Label Function State Description

AC Input

power

Cisco XR 12406 Router Installation Guide

On AC power source is present and is within

specified limits.

Off Power source is not within specified

limits.

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Table 1-9 AC-Input Power Supply LED indicators (continued)

LED Label Function State Description

DC Output

DC Power Subsystem

The DC power subsystem consists of the following system components:

• DC PDU (one)

• DC-input PEMs (one for nonredundant operation; two for redundant

operation)

Caution To ensure that the chassis configuration complies with the required power

Power

Line Cards

On Power supply is operating normally in a

power-on condition.

Off Power supply is operating in a fault

condition and shutdown has occurred.

DC PDU

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Facility DC power connects to DC-powered routers though the connector blocks on the DC PDU (

Figure 1-15).

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Chapter 1 Cisco XR 12406 Router Overview

Figure 1-15 DC Power Distribution Unit

POWER B

GND

POW

ER A

GND

1 Captive screw 4 DC power distribution unit

2 DC power connector block A 5 Guide pin

3 DC power connector block B 6 Blower module connector

57992

1-34

DC-input power is connected through the DC PDU on the chassis rear panel. The DC PDU is equipped with two DC power connector blocks. Each DC power connector block is equipped with three terminal ports. Leads from the DC source power should be connected to the terminal block. A negative lead is connected to the top port, a positive lead to the middle port, and a ground lead to the bottom port.

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DC-Input Power Entry Module

The DC-input PEM (Figure 1-16) is a removable power module that installs in one of the bottom two bays on the front of the chassis (see Figure 1-1). These power modules support the OIR feature and are hot-swappable.

Note When operating your router on a single power module, the second power module

bay must have a blank filler (MAS-GSR-PWRBLANK=) installed to ensure EMI compliance.

Caution The Cisco XR 12406 Router is configured for either AC power or DC power. Do

not mix AC-input power supplies and DC-input PEMs.

Figure 1-16 DC-Input Power Entry Module

Line Cards

OUTPUT

INPUT

OUTPUT

INPUT

MISWIRE

1 DC-input PEM 4 Captive screws on release levers

2 Handle 5 Air inlet for cooling fan

3 Circuit breaker ON/OFF switch —

62203

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Chapter 1 Cisco XR 12406 Router Overview

A DC-input PEM (shown in Figure 1-16) has the following features:

• A circuit breaker switch on the faceplate turns the PEM on and off.

• A handle is provided for ease in removing and replacing the PEM.

• Captive screws on the PEM ejector levers secure it in the PEM bay.

• Three LEDs on the faceplate to provide status information. Table 1-10

summarizes the function of these indicators.

Ta b l e 1-10 DC-in put PEM LED In dica tors

LED Label Color Function

OUTPUT OK Green PEM is operating normally in a powered-on

condition.

INPUT OK Green DC power is present at the PEM input and

within the specified limits.

MISWIRE Amber Indicates input is wired backward at the PDU

input.

1-36

• Each PEM weighs 10.5 pounds (4.76 kg), and can deliver up to 1400 W at

-48

VDC.

• Each PEM requires a hardwired source DC power cable from the site DC

power source to the DC PDU in the router. The DC power cable leads to the PDU should be #6 American Wiring Gauge (AWG) high-strand-count wires.

• Only a DC power source that complies with the safety extra-low voltage

(SELV) requirements in UL1950, CSA 950, EN 60950, and IEC950 can be connected to a PEM.

• The router requires a dedicated 45A DC circuit breaker for the DC power

source. This circuit breaker should protect against short-circuit and overcurrent faults in accordance with United States National Electrical Code NFPA 70 (United States), Canadian Electrical Code, part I, CSA C22.1 (Canada), and IEC 364 (other countries).

Note We recommend that you install an uninterruptable power source (UPS) as

a safeguard against power loss.

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Power Distribution

The router chassis backplane distributes -48 VDC power throughout the router and to all cards in the card cages.

All cards have multiple DC-DC converters that convert the -48 VDC into +2.5

VDC, +3.3 VDC, +5 VDC, and other voltages as required by the line card. The DC-DC converters are turned on by the MBus modules under the control of the route processor and MBus software.

Power for the blower module is supplied directly from the backplane through a connector in the PDU that passes DC voltage from the backplane to the blower module. An blower module controller card in the blower module converts –48

VDC into DC voltage that powers the blower module fans.

Caution To ensure that the chassis configuration complies with the required power

Line Cards

Blower Module

The Cisco XR 12406 Router is equipped with a blower module to distribute air within the chassis. The blower module is located on the rear of the chassis (see

Figure 1-3). The blower module draws room air into the chassis through two air

filters on the side of the chassis, pulls the air through the chassis card cages, and expels it through exhaust vents on the back of the blower module (

Caution Exhaust from other equipment vented directly into the router air inlet may cause

overheating. The front, back, and sides of the router must remain unobstructed to ensure adequate air flow and prevent overheating inside the chassis. Allow sufficient air flow by maintaining 6 inlet and exhaust openings on the chassis.

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Figure 1-17).

inches (15.24 cm) of clearance at both the

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Line Cards

If the air temperature inside the route processor and line card cage rises, the system environmental monitor shuts down all internal power to prevent equipment damage from excessive heat.

If the system detects that one of three fans within a blower module has failed, it displays a warning message on the console screen. If multiple fans fail, the system shuts down to prevent equipment damage.

Figure 1-17 Internal Air Flow—Top View

Air exhaust Air exhaust

Blower module

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Top view

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Air filter

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The two LEDs on the blower module provide a visual indication of blower module status. Both LEDs are visible on the blower module from the rear of the chassis.

• OK—Left LED; Green. When on, this LED indicates that the blower module

is operating normally. This LED should come on as soon as the blower module is installed and receives power from the backplane connector.

• Fail—Right LED; Red. The red LED should remain off during normal

operation. If the red LED is on, the system has detected a fan failure or other fault in the blower module. Replace the existing blower module with a spare.

Chassis Backplane and Maintenance Bus

All of the card cages for the Cisco XR 12406 Router are tied together electrically through a passive system backplane in the back of the chassis. Nearly all of the wiring and circuitry in the chassis is contained within or connected to the chassis backplane. The chassis backplane distributes DC power to all of the cards in the chassis as well as the blower module, and provides the physical communication pathway between cards, both for network data and system communication across the internal system maintenance bus (MBus).

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The maintenance bus and MBus modules manage the maintenance functions of the system. The MBus is integrated into the backplane and consists of two separate buses, providing MBus redundancy.

Both MBus networks are linked to all the following items:

• Route processor and line cards

• CSCs, SFCs, and alarm cards

• Power modules

• Blower module

The MBus module located on each component communicates over the MBus and is powered by DC voltage directly from the alarm card. The MBus performs the functions of power-up/down control for each component, component (device) discovery, code download, diagnostics, and environmental monitoring and alarms.

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Line Cards

Power-on and Power-off Control

Each MBus module directly controls the DC-DC converters on the component on which it is mounted, based on commands the component receives from its on-board EPROM and from the route processor. Each MBus module is tied directly to DC voltage from the alarm card.

When power is applied to the router, all MBus modules immediately power on. The MBus modules on the route processor and CSC immediately turn on the DC-DC converter, powering up the respective card. The line card MBus module waits to power on the line card until it receives a command from the route processor.

Device Discovery

The route processor uses the MBus to detect the system configuration. The route processor sends a message over the MBus requesting identity information from all installed devices. The responses provide component type, as well as slot numbers for the line cards, CSCs, SFCs, and alarm cards.

Chapter 1 Cisco XR 12406 Router Overview

Code Download

Diagnostics

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A portion of the line card operating software can be downloaded from the route processor to the line card over the MBus. Because the MBus is relatively slow compared to the switch fabric, only enough code is downloaded to the line card for it to access the switch fabric and complete the download process.

The diagnostic software image is downloaded from the route processor to the line card during the test sequence.

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Chapter 1 Cisco XR 12406 Router Overview

Environmental Monitoring and Alarms

The MBus module on each component monitors the environment of that component as follows:

• Line cards and the route processor are monitored for temperature by two

temperature sensors mounted on each card. The MBus module makes voltage adjustments through software for the +2.5 DC-DC converters.

• Clock and scheduler cards and switch fabric cards are monitored for

temperature by two temperature sensors mounted on each card. The MBus module makes voltage adjustments through software for the +2.5 +3.3

VDC converters.

• The MBus module on the alarm card makes voltage adjustments for +5 VDC.

• Environmental monitoring includes voltage monitoring, temperature

monitoring, and sensing for the blower module fans.

Line Cards

VDC, +3.3 VDC, and +5 VDC

VDC and

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Line Cards

Air Filters

The Cisco XR 12406 Router is equipped with two user-serviceable air filters (

Figure 1-18).

Figure 1-18 Air Filter Locations

T C

T O

R O L S

12000

S E

R IE

L L O

5 4

CONSOLE

N I

I I

GIGABIT ROUTE PROCESSOR

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57678

The air filters are located on the right of the front side of the chassis. The air filters are housed behind a door that is spring-loaded in the closed position.

Caution Air filters should be clean when the router is operating. Inspect and clean the air

filters once a month, more often in dusty environments.

Do not run the router without the air filters installed. You should inspect and clean the air filters once a month, more often in dusty environments.

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Chapter 1 Cisco XR 12406 Router Overview

Cable-Management System

The Cisco XR 12406 Router cable-management system organizes the interface cables entering and exiting the system, keeping them free of sharp bends and out of the way.

Caution Excessive bending in an interface cable can degrade performance.

The cable-management system (Figure 1-19) consists of the following components:

• One vertical cable-management bracket on the chassis

• One line card cable-management bracket on each line card

When you face the front of the router chassis, the chassis cable-management bracket is installed on the left side of the chassis, adjacent to the line card and route processor card cage. The chassis cable-management bracket organizes the line card and route processor cables to keep them from binding, and it eliminates interference when access to the front of the chassis is necessary for maintenance and reading the LEDs.

A line card cable-management bracket attaches to each line card with captive screws. Cable ties on the bracket hold the network interface cables in place, keep the cables organized relative to their assigned connectors, and manage the bend radius of each cable as it enters the connector on the line card.

On line cards with multiple ports, the line card cable-management bracket keeps the network interface cables organized when your remove and replace the line card. You can unplug the network interface cables from their connectors on the line cards and leave the cables bundled in the line card cable-management bracket while you remove the bracket from the line card. That way, when you replace the line card, the network interface cables are already aligned with the correct line card cable connectors.

Line Cards

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Line Cards

Figure 1-19 Chassis Cable-Management System

EJECT

SLOT-1

RESET

SLOT-0

CISCO 12000

GIGABIT SWITCH ROUT ER

CONSOLE

COLL

RJ-45

LINK

MII

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101833

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Chapter 1 Cisco XR 12406 Router Overview

Figure 1-20 Chassis Cable Management System (with PRP-3 Installed)

Line Cards

SCO 12000

GIGABIT SWITCH ROUTER

A N I

H 1

TS 0

TS 1

SOLE

272396

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Line Cards

Field-Replaceable Units

The field-replaceable units (FRUs) for the Cisco XR 12406 Router include the following units:

Note For information on ordering FRUs, contact a customer service representative (see

the section titled

page -xii).

• Route processor

• Line cards

• CSCs

• SFCs

• Alarm cards

• PDU:

–

For AC powered systems, AC PDU

–

For DC-powered systems, DC PDU

• Power modules:

Chapter 1 Cisco XR 12406 Router Overview

Obtaining Documentation and Submitting a Service Request,

1-46

–

For AC-powered systems, AC-input power supplies

–

For DC-powered systems, DC-input PEMs

• AC power cords (for AC powered systems)

• Blower module

• Air filters

• Chassis cable-management bracket

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Chapter 1 Cisco XR 12406 Router Overview

Upgrading a Cisco 12000 Series Internet Router to a Cisco XR 12000 Series Router

A Cisco XR 12000 Series Router can be upgraded to a Cisco XR 12406 Router by updating the line cards and software images. For information on this process, including supported line cards and software upgrade procedures, please refer to the Cisco document, Upgrading a Cisco 12000 Series Router from Cisco IOS Software to Cisco IOS XR Software.

Technical Specifications

For technical specifications and compliance information for the Cisco XR 12406 Router, see

Warnings.”

Appendix A, “Cisco XR 12406 Router Technical Specifications and

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Technical Specifications

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CHA P T E R

Preparing for Installation

This chapter provides specific information about preparing your site for the installation of the Cisco XR 12406 Router. The following sections are included in this chapter:

• Tools and Equipment, page 2-2

• Safety and Compliance, page 2-2

• Safety with Electricity, page 2-8

• Installation Site Requirements, page 2-9

• Unpacking and Repacking the Router, page 2-21

• Transporting a Cisco XR 12000 Series Router, page 2-22

• Site Preparation Checklist, page 2-22

Before installing a Cisco XR 12406 Router, you should have the following information:

• Power and cabling requirements that must be in place at your installation site

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• Equipment you will need to install the router

• Environmental conditions your installation site must meet to maintain normal

operation

Note Do not unpack the router until you are ready to install it.

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2-1

Tools and Equipment

The Cisco XR 12406 Router can be installed with a minimum number of tools. The following tools are required:

• 1/4-inch and 3/16-inch flat-blade screwdrivers

• 9/16-inch wrench

• 10-mm wrench (either open-end or socket)

• 2-mm allen wrench

• ESD-preventive wrist strap

• Antistatic mat

• Tape measure

• Wire cutters

• Pliers

Chapter 2 Preparing for Installation

Safety and Compliance

The following guidelines help to ensure your safety and protect the equipment. This section does not include every potentially hazardous situation, so be alert.

• General Safety Guidelines, page 2-3

• Compliance and Safety Information, page 2-4

• Laser Safety, page 2-7

• Lifting Guidelines, page 2-7

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Chapter 2 Preparing for Installation

General Safety Guidelines

The following are some general safety guidelines you should be aware of when installing or maintaining the Cisco XR 12406 Router.

• Never attempt to lift an object that might be too heavy for you to lift by

yourself.

Caution Do not attempt to lift the chassis by the blower module handle. The

blower module handle is intended for lifting the blower module only when it is disconnected from the chassis.

• Always disconnect the power source and unplug all power cables before

lifting, moving, or working on the router.

• Keep the work area clear and dust free during and after installation.

• Keep tools and router components away from walkways and equipment rack

aisles.

• Do not wear loose clothing, jewelry (including rings and chains), or other

items that could get caught in the router.

• Fasten your tie or scarf and sleeves.

Safety and Compliance

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• Cisco equipment operates safely when it is used in accordance with its

electrical ratings and product usage instructions.

• Do not work alone if potentially hazardous conditions exist.

• Always unplug the power cables when performing maintenance or working

on the router, unless the replacement part is hot swappable and designed for online insertion and removal (OIR).

• The installation of the router should be in compliance with national and local

electrical codes: in the United States, National Fire Protection Association (NFPA) 70, United States National Electrical Code; in Canada, Canadian Electrical Code, part I, CSA C22.1; in other countries, International Electrotechnical Commission (IEC) 364, part 1 through part 7.

• Before installing, configuring, or maintaining the router, review the safety

warnings listed in the Regulatory Compliance and Safety Information for the Cisco 12000 Series Router that accompanied your router.

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Safety and Compliance

Chapter 2 Preparing for Installation

• A Cisco XR 12406 Router with an AC power distribution unit (PDU) and

AC-input power supplies are shipped with AC power cords equipped with three-wire electrical grounding-type plugs that will fit into only a grounding-type power outlet. This is a safety feature. The equipment grounding should be in accordance with local and national electrical codes.

• A Cisco XR 12406 Router with a DC PDU and DC-input power entry

modules (PEMs) require an external 45A DC circuit breaker for each DC power source. This circuit breaker should protect against short-circuit and overcurrent faults in accordance with United States National Electrical Code NFPA 70 (United States), Canadian Electrical Code, part I, CSA C22.1 (Canada), and IEC 364 (other countries).

• Only a DC power source that complies with the safety extra-low voltage

(SELV) requirements in UL 1950, CSA-C22.2 No. 950, EN60950, ACA TS001, AS/NZS 3260, and IEC60950 should be connected to a Cisco XR 12406 Router with DC PDU and DC-input PEMs.

• A Cisco XR 12406 Router configured with DC-input PEMs should be

installed in a restricted access area in accordance with Articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70.

• A Cisco XR 12406 Router configured with a DC PDU shall have a readily

accessible disconnect device incorporated in the fixed wiring.

Compliance and Safety Information

The Cisco XR 12406 Router is designed to meet the regulatory compliance and safety approval requirements. Refer to the Regulatory Compliance and Safety Information for the Cisco 12000 Series Router if you require additional compliance information (see the

Service Request” section on page -xii for site information).

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“Obtaining Documentation and Submitting a

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Chapter 2 Preparing for Installation

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage to circuit boards can occur if proper grounding is not established. The boards can produce intermittent or complete failures if they are mishandled.

When handling circuit boards, observe the following guidelines to prevent ESD damage:

• Always use an ESD-preventive ankle or wrist strap and ensure that the strap

makes adequate contact with your skin.

• The ankle or wrist strap protects equipment from ESD voltages on the body

only; ESD voltages on clothing can still cause damage to electronic components.

Attaching an ESD-Preventive Strap

Attach an ESD antistatic strap to your body and to an open metal part of the chassis on the Cisco XR 12406 Router (

Figure 2-1).

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Safety and Compliance

Chapter 2 Preparing for Installation

Figure 2-1 Attaching an ESD-Preventive Strap to the Cisco XR 12406

Router Chassis

T C E

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X U

CISCO 12000

G IG

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I T

C H

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2-6

Caution Periodically check the resistance value of the antistatic wrist strap. The resistance

measurement should be between 1 and 10 megohms.

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Laser Safety

Single-mode Cisco XR 12000 series router line cards are equipped with lasers. The lasers emit invisible radiation. Do not stare into open line card ports. Observe the following warning to prevent eye injury:

Safety and Compliance

Warning

Avoid exposure to laser radiation. Do not stare into an open aperture, because invisible laser radiation may be emitted from the aperture when a cable is not inserted in the port.

Lifting Guidelines

A fully configured Cisco XR 12406 Router weighs approximately 205 pounds (93 kg). Before you install the router, ensure that your site is properly prepared so that you will not have to move the router later to accommodate power source and/or network connections.

Caution To prevent damage, never attempt to lift or tilt the router chassis using the handles

on the blower module or line cards. These handles do not support the weight of the chassis.

Whenever you lift any heavy or awkward equipment, follow these precautions to avoid injury to yourself or damage to the equipment:

• When using moving equipment, such as a safety hand truck, pallet jack, or

• Have a second person help lift the equipment; avoid lifting the equipment

forklift to move the equipment to another location, use only moving equipment that is capable of preventing the router from tipping.

alone.

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• Ensure that your footing is solid; balance the weight of the object between

your feet.

• Lift the equipment slowly; never move suddenly or twist your body as you

lift.

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Safety with Electricity

• Keep your back straight and lift with your legs, not your back. If you must

bend down to lift the equipment, bend at the knees, not at the waist, to reduce the strain on your lower back muscles.

• Always disconnect all external cables before lifting or moving the router.

Safety with Electricity

Most Cisco XR 12406 router field replaceable units (FRUs) support online insertion and removal (OIR), which means they can be removed and installed (hot-swapped) while the router remains powered on.

• Line cards, switch fabric cards (SFCs), alarm cards, and the blower module

are hot-swappable.

• Power modules, clock and scheduler cards (CSCs), and RPs also support OIR,

but are hot-swappable only when the system is equipped with two power modules, two CSCs, or two RPs, respectively.

• The power distribution unit (PDU) does not support OIR.

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Installation Site Requirements

This section provides the site requirement guidelines that you must consider before installing a Cisco XR 12406 Router:

Rack-Mounting Guidelines

Before installing a Cisco XR 12406 Router in a rack, consider the general rack-mounting guidelines in the following sections.

Types of Equipment Racks

A Cisco XR 12406 Router can be mounted in most two-post, four-post, or telco-type 19-inch equipment racks that comply with the Electronics Industries Association (EIA) standard for equipment racks (EIA-310-D). The rack must have at least two posts with mounting flanges on which to mount the router chassis. The distance between the center lines of the mounting holes on the two mounting posts must be 18.31 inches ± 0.06 inch (46.50 cm ± 0.15 cm).

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Installation Site Requirements

Equipment Dimensions and Site Layout

Figure 2-2 shows the footprint and outer dimensions of the chassis for the Cisco

XR 12406 Router.

Figure 2-2 Chassis Outer Dimensions and Footprint

23.137 in.

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17.234 in.

2-10

30.877 in.

7.740 in.

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To help maintain trouble-free operation, consider the following precautions when planning your rack installation:

• The site of the rack must include provisions for source AC or DC power,

grounding, and network interface cables.

• For the actual installation, allow sufficient space to work around the rack. You

will need at least 3 feet adjacent to the rack to move, align, and insert the chassis. You need at least 2 feet in front of the chassis to insert power modules.

• Maintain at least 24 inches (61 cm) of clearance in front of and behind the

chassis for maintenance after installation.

• To mount the router between two posts or rails, the usable aperture (the width

between the inner edges of the two mounting flanges) must be at least 17.5 inches (44.5 cm).

• For the enhanced model of the Cisco XR 12406 Router, the mounting rails on

a 4-post rack must be recessed no more than 1.5 inches for the front door to fully open and close and to provide adequate room for cable routing.

• The height of the Cisco XR 12406 Router is 18.5 inches (46.9 cm). Most

7-foot (2.15-m) equipment racks will accommodate four Cisco XR 12406 Routers. Allow sufficient space in the rack for the router.

• When fully populated with cards, a Cisco XR 12406 Router can weigh as

much as 205 pounds (93 kg). If you use a telco-style rack, the weight of the chassis is cantilevered off of the two rack posts. Ensure that the weight of the router does not make the frame unstable. Be sure that the frame is bolted to the floor and is secured to the building structure, either to wall or to overhead brackets.

• Do not route cables in such a way as to disrupt movement in front of or behind

the rack. To avoid noise interference in network interface cables, do not route them directly across or along power cables. Use appropriate strain-relief methods to protect cables and equipment connections.

Installation Site Requirements

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• Install and use the cable-management brackets included with the router to

keep cables organized and out of the way of line cards, power modules, and blower modules. Consider the equipment and cabling that is already installed in the rack. Ensure that cables from other equipment do not impair access to the card cages, requiring you to disconnect cables unnecessarily to perform equipment maintenance or upgrades.

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Installation Site Requirements

Ventilation

Note Warm air is exhausted from the rear of the chassis. Maintain 6 inches (15.24 cm)

Chapter 2 Preparing for Installation

The blower module is mounted at the rear of the chassis; air flow to the air filters and blower module should not be blocked.

of clearance at both the inlet and exhaust openings on the chassis to allow sufficient air flow.

• When placing multiple a Cisco XR 12406 Router in the same rack, ensure that

there is sufficient ventilation to accommodate the routers.

• Equipment located near the bottom of the rack can generate excessive heat

that is drawn upward and into the intake ports of equipment above, possibly leading to overheating.

• The heated exhaust air from other equipment can enter the inlet air vents and

cause overheating inside the router.

• A ventilation system that is too powerful in an enclosed rack can also prevent

cooling by creating negative air pressure around the chassis and redirecting the air away from the air intake vent. If necessary, operate the router with the rack door open or in an open rack.

• The correct use of baffles inside an enclosed rack can assist in cooling the

router.

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Environmental Guidelines

This section offers guidelines for operating a Cisco XR 12406 Router in various environments. The following environmental considerations are discussed:

• Airflow

• Temperature and humidity

Airflow

The air circulation system for a Cisco XR 12406 Router consists of one blower module mounted at the rear of the chassis. The blower module maintains acceptable operating temperatures for the internal components by drawing cooling air in through replaceable air filters located on the right side of the chassis. Air circulates through the card cage and exhausts at the rear of the chassis.

Observe the following guidelines when selecting a site in which to install a Cisco XR 12406 Router:

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• Dust free—The site should be as dust free as possible. Dusty environments

can clog the air filter or power supply intake vents, reducing the cooling air flow through the router. This can cause an over temperature condition in the router.

• Air flow—Allow sufficient air flow by maintaining a minimum of 6 inches

(15.24 cm) of clearance at both the inlet and exhaust openings on the chassis and the power modules. If the air flow is blocked or restricted, or if the inlet air is too warm, an over temperature condition can occur within the router. Under extreme conditions, the environmental monitoring system shuts down the power to protect the router components.

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Installation Site Requirements

Temperature and Humidity

The operating environmental site requirements are listed in Appendix A, “Cisco

XR 12406 Router Technical Specifications and Warnings.” The temperature and

humidity ranges listed are those within which the Cisco XR 12406 Router will continue to operate. You can maintain normal operation by anticipating and correcting environmental irregularities before they approach critical values.

The environmental monitoring functionality built into the Cisco XR 12406 Router protects the system and components from potential damage from overvoltage and over temperature conditions. To assure normal operation and avoid maintenance difficulty, plan and prepare your site before you install the router.

Power Connection Guidelines

A Cisco XR 12406 Router can be configured with either an AC-input power subsystem or a DC-input power subsystem. Site power requirements differ depending on which source power scheme is used. Follow these precautions and recommendations when planning power connections to the router:

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• Check the power at your site before installation and periodically after

installation to ensure that you are receiving clean power.

• If necessary, install a power conditioner.

• Install proper grounding to avoid damage from lightning and power surges.

Note When operating your router on a single power module, the second power

module bay must have a blank filler (MAS-GSR-PWRBLANK=) installed to ensure EMI compliance.

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Power Connection Guidelines for AC-Powered Routers

When the Cisco XR 12406 Router operates with an AC PDU, observe these guidelines:

• Original series Cisco XR 12406 routers: A power factor corrector (PFC)

allows the power supply to accept AC power source voltage from an AC power source operating from 100 to 120 America, and a range of from 185 to 264 international environment.

• Enhanced series Cisco XR 12406 routers: Supports 220 VAC only which

requires 20-amp service in North America, and 16-amp service in an international environment.

• Use only the 14-foot (4.3-meter) AC power cords shipped with the system.

• Provide a dedicated power source with its own circuit breaker for each

AC-input power supply installed in the router.

• Install an uninterruptable power source where possible.

Power plug types used in North America, Australia, and Europe are described in

Table 2-1 and shown in Figure 2-3.

VAC 20-amp service in North

VAC 16-amp service in an

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Ta b l e 2-1 AC-Input Power Cord International Options

Label Description Cisco Product Number

United States 110 VAC (original

Cisco XR

12000 series

CAB-GSR6-US

routers)

United States 220 VAC (enhanced

Cisco XR

12000 series

CAB-GSR6-220V-US

routers)

North America 20A, 250 VAC CAB-GSR16-US=

Australia, New Zealand 15A, 250 VAC CAB-GSR16-AU=

Europe, Argentina, Brazil 16A, 250 VAC CAB-GSR16-EU=

Italy 16A, 250 VAC CAB-GSR16-IT=

United Kingdom 13A, 250 VAC (13A

CAB-GSR16-UK=

replaceable fuse)

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Installation Site Requirements

Figure 2-3 AC Power Plugs

Chapter 2 Preparing for Installation

North American plug

L6-20 20A

Italian plug

CEI 23-16/VII 16A

Australian plug

AS 3112 15A

United Kingdom plug

European plug

CEE 7/7 16A

BS 1363 13A

Power Connection Guidelines for DC-Powered Routers

When the Cisco XR 12406 Router operates with a DC PDU, observe these guidelines:

• A Cisco XR 12406 Router configured with a DC PDU and DC-input PEMs

require a dedicated 45A DC circuit breaker for each DC power source. This circuit breaker protects against short-circuit and overcurrent faults in accordance with United States National Electrical Code NFPA 70 (United States), Canadian Electrical Code, part I, CSA C22.1 (Canada), and IEC 364 (other countries).

• DC power cable leads should be #6 American Wiring Gauge (AWG)

high-strand-count wire.

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• Provide a dedicated power source for each power entry module installed in

the router.

• Install an uninterruptable power source where possible.

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Chapter 2 Preparing for Installation

Grounding Connections

Before you connect power or turn on your Cisco XR 12406 Router, you must provide an adequate system ground for the router. The equipment grounding should be in accordance with local and national electrical codes.

For installations other than in a network equipment building system (NEBS) environment, you may chose to rely on the safety earth ground connection supplied via the International Electrotechnical Commission (IEC) 320 inlets for AC-powered units and the main terminal block ground connection for DC-powered units.

• On Cisco XR 12406 Routers configured for AC-input operation, the AC PDU

is equipped with two three-wire electrical grounding-type connectors that accept three-wire, grounding-type AC power cords such as the power cords shipped with the router. This is a safety feature.

• On Cisco XR 12406 Routers configured for DC-input operation, the DC PDU

is equipped with two DC power connector blocks, each with wire-connection terminals for connecting the negative lead (top terminal), the positive lead (middle terminal), and the ground lead (bottom terminal). This is a safety feature.

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Note The Cisco XR 12404 Router grounding architecture conforms to the

DC-I (DC-isolated) method of grounding as described in Telcordia GR-1089-CORE. A DC-I architecture means that there is no connection between the DC return terminal and the frame ground. DC return and frame ground are isolated from one another at the router.

If the router is installed in a NEBS environment, we strongly recommend that you connect the central office ground system or interior equipment grounding system to the supplemental bonding and grounding point on the router chassis. This grounding point consists of three threaded inserts is located on the side of the chassis near the back of the chassis (

Figure 2-4). It is also referred to as the NEBS

bonding and grounding receptacle, and is intended to satisfy the Telcordia NEBS requirements for supplemental bonding and grounding connections.

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Installation Site Requirements

Figure 2-4 Supplemental Bonding and Grounding Port for NEBS

CISCO 12000

S E R I E

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Use a cable lug with two holes at 0.63" (16 mm) centers to connect to the chassis with two 6.3 mm (M6) screws as shown in from Cisco (Part Number 32-0607-01).

Chapter 2 Preparing for Installation

Compliance

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Figure 2-5. The lug can be ordered

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Figure 2-5 Cable Lug

End View

0.48

Ø 0.267

2 holes

0.08

Cisco XR 12406 Router Installation Guide

All measurements in inches

2.24

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Chapter 2 Preparing for Installation

The dual-hole lug is crimped onto a grounding wire of a wire size and length determined by your router location and facility environment. The crimping tool shown in hardware source.

Figure 2-6 Crimping the Lug

Installation Site Requirements

Figure 2-6 is a standard crimping tool obtainable from any normal

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57808

Place ground wire in the lug

Note The three threaded inserts that make up the grounding receptacle are set in a

Crimp the lug

triangle so that you can choose any two of the three holes to attach the lug and grounding cable.

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Installation Site Requirements

Site Wiring

This section presents site wiring guidelines for setting up the plant wiring and cabling at your site. When planning the location of the new system, consider the following:

• Electromagnetic interference (EMI)

• Distance limitations for signaling and unshielded conductors

Electromagnetic Interference

EMI can occur between the signals on the wires and external or ambient EMI fields when the wires are run for any significant distance. Bad wiring practice can result in radio interference emanating from the plant wiring.

Chapter 2 Preparing for Installation

Warning

Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the Cisco XR 12406 Router, can create an electrical hazard by conducting power surges through lines, and can damage the equipment.

To predict and remedy strong EMI, you may need to consult experts in radiofrequency interference (RFI).

If you use twisted-pair cable in your plant wiring with a good distribution of grounding conductors, the plant wiring is unlikely to emit radio interference. If you exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.

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Chapter 2 Preparing for Installation

Unpacking and Repacking the Router

Distance Limitations

If wires exceed recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse (EMP) caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you may want to consult experts in electrical surge suppression and shielding.

Most data centers cannot resolve infrequent but potentially catastrophic problems without pulse meters and other special equipment. These problems can take time to identify and resolve, so take precautions by providing a properly grounded and shielded environment, with special attention to issues of electrical surge suppression.

Unpacking and Repacking the Router

The shipping package for Cisco XR 12000 series routers is engineered to reduce the potential of product damage associated with routine material handling experienced during shipment. To minimize potential damage to the product, transport these products in their Cisco-specified packaging. Failure to do so may result in damage to the router or degradation of its performance. Also, do not remove the Internet router from its shipping container until you are ready to install it. The router should always be transported or stored in an upright position. Keep the router in the shipping container until you have determined a location for installation.

Refer to the unpacking instructions (Cisco XR 12406 Router Unpacking and Repacking Instructions document) that came with the router to unpack it from the shipping pallet and verify the contents. This document also includes instructions to repack the router if you need to transport it.

If you do not receive everything you ordered, contact a customer service representative for assistance. See the section titled

Submitting a Service Request, page -xii.

Obtaining Documentation and

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Chapter 2 Preparing for Installation

Transporting a Cisco XR 12000 Series Router

The shipping package for Cisco XR 12000 Series Routers is engineered to reduce the potential of product damage associated with routine material handling experienced during shipment. To minimize potential damage to the product, transport these products in their Cisco-specified packaging. Failure to do so may result in damage to the router or degradation of its performance. Also, do not remove the Internet router from its shipping container until you are ready to install it. The router should always be transported or stored in an upright position. Keep the router in the shipping container until you have determined a location for installation.

Site Preparation Checklist

The Cisco XR 12406 Router comes with a site log. Keep this in a common place near the router where anyone who performs tasks can have access to it. Site log entries might include the following:

• Installation progress—Make entries in the site log to record installation. Note

any difficulties encountered and their remedies during the installation process.

• Upgrades and removal/replacement procedures—Use the site log as a record

of system maintenance and expansion history, for example:

2-22

–

FRU installed, removed, or replaced

–

Configuration changes

–

Software upgrades

–

Corrective or preventive maintenance procedures performed

–

Intermittent problems

–

Your comments

Table 2-2 shows a sample site log. You can make copies of the sample or design

your own site log.

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Chapter 2 Preparing for Installation

Ta b l e 2-2 Sample Site Log

Date Description of Action Performed or Symptom Observed Initials

Site Preparation Checklist

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Site Preparation Checklist

Chapter 2 Preparing for Installation

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CHA P T E R

Installing the Cisco XR 12406 Router

This chapter describes how to install the Cisco XR 12406 router. It includes the following sections:

• Installing a Router, page 3-2

• Supplemental Bonding and Grounding Connections, page 3-10

• Connecting RP and Line Card Cables, page 3-14

• Connecting Alarm Card Cables, page 3-17

• Connecting to the Console and Auxiliary Ports, page 3-17

• Connecting to an AC Power Source, page 3-26

• Connecting to a DC Power Source, page 3-29

• Powering On the Router—First Time, page 3-32

• Boot Process Overview, page 3-35

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Installing a Router

Required Tools

You need the following items to install the Cisco XR 12406 router:

• Number 2 Phillips screwdriver

• Small flat-bladed screwdriver

• Tape measure (optional)

• Level (optional)

Installing a Router

This section provides the procedures for installing the Cisco XR 12406 router and contains the following sections:

• Installing the Rack-Mounting Brackets—Optional, page 3-3

• Installing the Chassis in a Rack, page 3-8

• Installing Center-Mounting Brackets (optional), page 3-5

• Installing the Chassis on a Tabletop or Flat Surface, page 3-10

Your installation site should already be prepared before you begin installing the router. For complete information about site preparation see

for Installation”.

Chapter 3 Installing the Cisco XR 12406 Router

Chapter 2, “Preparing

3-2

Make sure that you have considered the following before you install the router:

• The exhaust vents on the blower module mounted at the rear of the chassis are

not blocked.

• The air filter is mounted on the right side as you face the router; air flow to

the blower module is not blocked.

• There is 24 inches (61 cm) of clearance at the rear of the chassis so you can

read the blower module LEDs and perform maintenance on the module.

• There is 24 inches (61 cm) of clearance in front of the router chassis to enable

working with line cards and power supplies, and attaching Network Interface Cable (NICs) or other components.

• Location is temperature controlled, air conditioned, and dust free.

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Chapter 3 Installing the Cisco XR 12406 Router

• Power cables and power supplies have been checked for compatibility with

your power service.

• Labels on the equipment have been checked to ensure that the power service

at your site is suitable for the router.

• AC power source receptacles are easy to reach.

Installing the Rack-Mounting Brackets—Optional

The rack-mounting brackets temporarily bear the weight of the router while it is being positioned in the rack.

While the use of the rack-mounting is optional, installing them makes it much easier to mount the router in a rack, and also ensures that the router is level. The rack-mounting brackets can be left in place following the router installation.

Installing a Router

Warning

Two or more people should install the router to minimize the risk of personal injury and damage to the equipment.

Refer to Figure 3-1 and use the following procedure to install the rack-mounting brackets.

Step 1 Measure and mark the hole at the same height on both the left and right rack rails.

Step 2 Mount the right mounting bracket:

a. Hold the right rack-mount bracket against the right rack rail and align the

bottom screw hole in the bracket with the marked screw hole on the rail.

b. Insert a screw through the bottom hole in the bracket and finger tighten the

screw.

c. Insert and finger tighten a second screw in the top hole in the bracket.

Step 3 Follow Step 2a through Step 2c to mount the left rack-mount bracket.

Step 4 Use a level to verify that the tops of the two brackets are level, or use a measuring

tape to verify that both brackets are the same distance from the tops of both rack rails.

Step 5 Use a screwdriver to tighten all the screws.

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Chapter 3 Installing the Cisco XR 12406 Router

Installing a Router

Figure 3-1 Installing the Optional Rack-Mount Brackets

1 1/4"

2 1/2"

1/16" sheet metal

3 3/8"

3/4"

Left mounting rail Right mounting rail

3-4

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Chapter 3 Installing the Cisco XR 12406 Router

Installing Center-Mounting Brackets (optional)

To install the Cisco XR 12406 router in the center-mounting position, you must first install the upper and lower center-mounting brackets on the equipment rack rails, then secure the chassis to the center-mounting brackets. If you do not plan to use the optional center-mounting brackets, proceed directly to the

the Chassis in a Rack” section on page 3-8.

The optional center-mounting bracket installation kit ships in an accessories box included in the router shipping container.

Refer to Figure 3-2 and use the following procedure to install the optional center-mounting brackets.

Step 1 Measure and mark the hole at the same height on both the left and right posts.

Caution When installing the right side lower center-mounting bracket, ensure that the

bracket does not impede airflow through the air filter, which could cause overheating in the router.

Installing a Router

“Installing

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Step 2 Mount the lower right bracket:

a. Hold the lower right bracket against the right rack rail and align the bottom

screw hole in the lower bracket with the marked screw hole.

b. Pick a bottom bracket hole that aligns with a hole in the rack rail, then insert

a screw in the hole and finger tighten the screw.

c. Insert a second screw in the top hole in the bracket and finger tighten that

screw.

Step 3 Repeat Step 2a through Step 2c to mount the lower left center-mounting bracket

so that it is at the same height as the lower right bracket.

Step 4 Use a level to verify that the tops of the two brackets are level, or use a measuring

tape to verify that both brackets are the same distance from the tops of both rack rails.

Step 5 Use a screwdriver to tighten all the screws.

Step 6 Repeat Step 1 through Step 5 for both upper center-mounting brackets.

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Installing a Router

Figure 3-2 Lower and Upper Center-Mounting Brackets

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Chapter 3 Installing the Cisco XR 12406 Router

Figure 3-3 Lower and Upper Center-Mounting Brackets (with PRP-3 Installed)

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Installing a Router

Installing the Chassis in a Rack

You install the chassis in the equipment rack by setting the chassis in position against the rack rails and then securing it to the rack or optional center-mounting brackets with screws through holes in the rack-mounting flanges on either side of the chassis.

To accommodate racks with different hole patterns in their rails, the chassis rack-mounting flanges have two groups of eight oblong screw holes on either side as shown in that one mounting hole in each hole group aligns with a hole in the rack rail or optional center-mounting bracket. By using the corresponding mounting hole (in the same hole group) on the opposite side of the chassis, you can level the chassis in the rack.

Figure 3-4. The mounting holes in the chassis flanges are spaced so

Chapter 3 Installing the Cisco XR 12406 Router

Warning

Two or more people should install the router to minimize the risk of personal injury and damage to the equipment.

Refer to Figure 3-4 and use the following procedure to install the chassis in a rack.

Step 1 Move the router as close to the installation location as possible without interfering

with the installation process.

Step 2 With one person lifting from the front and one from the rear of the chassis, lift the

chassis off the pallet and position the chassis in the rack.

Note A third person might be needed to assist in lifting and positioning the

chassis in the rack.

Step 3 Install the screws to secure the chassis to the rack:

a. Look at the bottom mounting holes on the chassis rack-mount flanges. Align

one of the holes with a mounting hole in the rack.

b. Install one of the mounting screws provided.

c. On the other side of the chassis, adjust the position of the chassis so that the

same mounting hole in the bottom group of mounting holes is aligned with a hole in the rack.

d. Install one of the mounting screws provided.

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Chapter 3 Installing the Cisco XR 12406 Router

Step 4 Repeat Step 3a through Step 3d for additional mounting holes.

Caution Do not allow the chassis to hang free until you have installed a screw in all four

hole groups (at least two screws on each side of the chassis).

Step 5 Use a screwdriver to tighten all the screws.

Figure 3-4 Chassis Mounting Bracket Holes

Installing a Router

Line card

Rack mounting

bracket holes

Line card

Route processor

CSC

Alarm Alarm

SFC

Power supply Power supply

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Chapter 3 Installing the Cisco XR 12406 Router

Supplemental Bonding and Grounding Connections

Installing the Chassis on a Tabletop or Flat Surface

Use the following procedure to install the Cisco XR 12406 router on a tabletop or other stable flat surface.

Step 1 Move the router as close to the installation location as possible.

Caution Do not lift the chassis by the blower module handle. This handle is designed to

support only the weight of the blower module.

Step 2 With one person positioned at the front of the chassis and one at the rear, lift the

chassis off the pallet and position the chassis on the flat surface.

Step 3 Secure the chassis to the flat surface to ensure that it does not fall off.

You can use the same mounting hardware that secured your router to the shipping pallet to secure the chassis to the flat surface.

Supplemental Bonding and Grounding Connections

Before you connect power or turn on your Cisco XR 12406 router, you must provide an adequate system ground for the router. The equipment grounding should be in accordance with local and national electrical codes.

If you are not installing the Cisco XR 12406 router in a NEBS environment, you can choose to bypass these guidelines and rely on the safety earth ground connection supplied using the 5-15 15A North American plug to the AC-powered PEMs, and the main terminal block ground connection for DC-powered PEMs.

• On Cisco XR 12406 routers configured for AC-input operation, the AC PDU

is equipped with a three-wire electrical grounding-type connector that accept three-wire, grounding-type AC power cords such as the power cords shipped with the router. This is a safety feature.

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Chapter 3 Installing the Cisco XR 12406 Router

• On Cisco XR 12406 routers configured for DC-input operation, the DC PDU

is equipped with a DC power connector block with wire-connection terminals for connecting the negative lead (top terminal), the positive lead (middle terminal), and the ground lead (bottom terminal). This is a safety feature.

Note The Cisco XR 12406 router grounding architecture conforms to the DC-I

(DC-isolated) method of grounding as described in Telcordia GR-1089-CORE. A DC-I architecture means that there is no connection between the DC return terminal and the frame ground. DC return and frame ground are isolated from one another at the router.

If the router is installed in a NEBS environment, we strongly recommend that you connect the central office ground system or interior equipment grounding system to the supplemental bonding and grounding point on the router chassis. This grounding point consists of threaded inserts is located on the side of the chassis near the back of the chassis ( bonding and grounding receptacle, and is intended to satisfy the Telcordia NEBS requirements for supplemental bonding and grounding connections.

Supplemental Bonding and Grounding Connections

Figure 3-5). It is also referred to as the NEBS

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Figure 3-5 Supplemental Bonding and Grounding Port for NEBS

Compliance

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Supplemental Bonding and Grounding Connections

Figure 3-6 Supplemental Bonding and Grounding Port for NEBS

Compliance (with PRP-3 Installed)

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Use a dual-hole lug to connect to the chassis with two 6.3-mm (M6) screws on the

0.63-inch (16-mm) centers as shown in ordered from Cisco (Part Number 32-0607-01).

Figure 3-7 Cable Lug

End View

0.48

Ø 0.267

2 holes

0.08

The dual-hole lug is crimped onto a grounding wire of a wire size and length determined by your router location and facility environment. The crimping tool shown in

Cisco XR 12406 Router Installation Guide

Figure 3-8 is a standard crimping tool obtainable from many sources.

Figure 3-5 and Figure 3-7. The lug can be

All measurements in inches

2.24

Crimp area

0.25 0.370.63

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Cisco XR 12406 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Cisco XR 12406 Router Installation Guide

CONTENTS

Preface

Cisco XR 12406 Router Overview

Router Description

Features

Physical and Functional Description

Route Processor

Performance Route Processor Overview

PRP PCMCIA Card Slots and Status LEDs

PRP Ethernet Ports and Status LEDs

PRP Auxiliary and Console Ports

PRP-3 LEDs

PRP Memory Components

PRP SDRAM

PRP SRAM

PRP NVRAM

PRP Flash Memory

Line Cards

Multigigabit Crossbar Switch Fabric

Switch Fabric Card Types

Switch Fabric Switching Capacity and Router Type

Switch Fabric Redundancy

Alarm Cards

Alarm Output Function

Clock and Scheduler Card and Switch Fabric Card Status

Alarm Card Status

Power Source Monitoring

Alarm Relay Contact Connector

Power Subsystems

AC Power Subsystem

AC-Input Power Supply

DC Power Subsystem

DC-Input Power Entry Module

Power Distribution

Blower Module

Chassis Backplane and Maintenance Bus

Power-on and Power-off Control

Device Discovery

Code Download

Diagnostics

Environmental Monitoring and Alarms

Air Filters

Cable-Management System

Field-Replaceable Units

Upgrading a Cisco 12000 Series Internet Router to a Cisco XR 12000 Series Router

Technical Specifications

Preparing for Installation

Tools and Equipment

Safety and Compliance

General Safety Guidelines

Compliance and Safety Information

Preventing Electrostatic Discharge Damage

Attaching an ESD-Preventive Strap

Laser Safety

Lifting Guidelines

Safety with Electricity

Installation Site Requirements

Rack-Mounting Guidelines

Types of Equipment Racks

Equipment Dimensions and Site Layout

Ventilation

Environmental Guidelines

Airflow

Temperature and Humidity

Power Connection Guidelines

Power Connection Guidelines for AC-Powered Routers

Power Connection Guidelines for DC-Powered Routers

Grounding Connections

Site Wiring

Electromagnetic Interference

Unpacking and Repacking the Router

Distance Limitations

Transporting a Cisco XR 12000 Series Router

Site Preparation Checklist

Installing the Cisco XR 12406 Router