Cisco GSR12/60 - 12012 Router -AnyLAN, SONET/SDH, 12012 Installation And Configuration Manual

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Cisco 12012 Gigabit Switch Router Installation and Configuration Guide

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The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular insta llation.

You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, tr y to c orrect t he interference by using one or more of the following measures:

• Turn the television or radio antenna until the interference stops.

• Move the equipment to one side or the other of the television or radio.

• Move the equipment farther away from the television or radio.

• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)

Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product. The following third-party software may be include d with your product and will be subject to the software license agreement: CiscoWorks software and documentation are based in part on HP OpenView under license from the Hewlett-Packard Company. HP OpenView is a

trademark of the Hewlett-Packard Company. Copyright © 1992, 1993 Hewlett-Packard Company. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of

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Cisco 12012 Gigabit Switch Router Installation and Configuration Guide

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CONTENTS

About This Guide xix

Document Objectives xix Audience xix Document Organization xx Document Conventions xxi Obtaining Documentation xxiv Cisco.com xxiv Ordering Documentation xxv Documentation Feedback xxv Obtaining Technical Assistance xxv Cisco Technical Support Website xxvi Submitting a Service Request xxvi Definitions of Servic e Request Severity xxvii Obtaining Additional Publications and Information xxvii

Chapter 1 Product Overview 1-1

Physical and Functional Overviews 1-2

Gigabit Route Processor 1-4

GRP Memo ry Compo nents 1-7 System Status LEDs 1-10 Soft Reset Switch 1-11 PCMCIA Slots 1-12 Asynchronous Serial Ports 1-12 Ethernet Port 1-12

Performance Route Processor 1-13

PRP Memory Components 1-17 System Status LEDs 1-20 Soft Reset Switch 1-21 Flash Disk Slots 1-21 Asynchronous Serial Ports 1-22

Table of Contents v

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Ethernet Ports 1-22 Line Cards 1-22 Alarm Card 1-23 Switch Fabric 1-25 Power Supplies 1-28

AC-Input Power Supply 1-29

DC-Input power Supply 1-30

Power Distribution 1-32 Blower Module 1-34 Air Filter 1- 37 Cable-Management System 1-37 Maintenance Bus 1-39

System Specifications 1-40 Agency Approvals 1-42

Chapter 2 Preparing for Installation 2-1

Safety Recommendations 2-2

Lifting Guidelines 2-3 Safety with Electricity 2-4 Preventing Electrostatic Discharge Damage 2-5 Laser Safety 2-6

Site Requirement Guidelines 2-6

Rack-Mounting Guidelines 2-7 Airflow Guidelines 2-10 Temperature and Humidity Guidelines 2-10 Power Guidelines 2-11

AC-Powered Systems 2-12

DC-Powered Systems 2-14 System Grounding Connection Guidelines 2-15 Site Wiring Guidelines 2-15 SONET Connection Guidelines 2-16

Power Budget 2-17

Approximating the Line Card Power Margin 2-18

Multimode Power Budget Example with Sufficient Power for

Transmission 2-20

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Multimode Power Budget Example of Dispersion Limit 2-20

Single-Mode Transmission 2-21

SONET Single-Mode Power Budget Example 2-21

Using Statistics to Estimate the Power Budget 2-22

Tools for Installatio n 2-22 Unpacking the Cisco 12012 2-23 Checking the Shipping Packaging Contents 2-23 Site Log 2-24

Chapter 3 Installing a Cisco 12012 3-1

Installing the Brace Bar 3-3 Removing the Cisco 12012 Components before Installing the Frame 3-4

Removing the Blower Modules 3-5 Removing Cards from the Card Cage Assembly 3-7

Removing the Cards from the Upper Card Cage 3-8

Removing the Cards from the Lower Card Cage 3-10 Removing a DC-Input Power Supply 3-14 Removing an AC-Input Power Supply 3-16 Removing the Card Cage Assem bly 3-18

Rack-Mounting the Frame 3-20 Reinstalling the Cisco 12012 Components after Installing the

Frame 3-23

Reinstalling the Card Cage Assembly 3-24 Reinstalling the Blower Modules 3-25 Reinstalling the Cards in the Upper Card Cage 3-26 Reinstalling the Cards in the Lower Card Cage 3-28

Connecting Line Card Cables 3-30 Connecting Route Processor Cables 3-33

GRP Console and Auxiliary Port Connection Equipment 3-33

GRP Console Port Signals 3-3 5

GRP Auxiliary Port Signals 3-35 GRP Ethernet Connection Equipment 3-36

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PRP Console and Auxili ary Port Connection Guidelines 3-40

PRP Console Port Signals 3-42

PRP Auxiliary Port Signals 3-42 PRP Ethernet Connection Equipment 3-43

PRP Ethernet Connections 3-44

Connecting Alarm Card Cables 3-48 Connecting System Grounding 3-50 Connecting Power 3-53

Reinstalling an AC-Input Power Supply 3-54 Reinstalling a DC-Input Power Supply 3-57

Chapter 4 Observing System Startup and Performing a Basic Configuration 4-1

Checking Connections in Preparation for System Startup 4-2 Starting the System and Observing Initial Co nditions 4-3 Manually Booting the System 4-7 Configuring the Cisco 12012 4-8

Performing a Basic Manual Configuration Using the Setup Facility or the setup Command 4-8

Configuring the Global Parameters 4-9

Configuring Interfaces 4-15 Performing a Basic Configuration Usi ng Configuration Mode 4-20 Checking the Running Configuration Settings before Saving Them 4-21 Saving the Running Configuration Settings and Reviewi ng Your Configuration 4-21

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Impleme nting Other Configuration Tasks 4-23

Configuring the Software Configuration Register 4-24

Boot Field Settings and the boot Command 4-26

Changing Configuration Register Settings 4-27

Configuration Register Bit Meanings 4-28 Recovering a Lost Password 4-31 Using Flash Memory Cards in the RP 4-34

Installing and Removing the Flash Memory Card in a RP 4-34

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Formatting a Flash Memory Card 4-37

Specifying the Cisco IOS Image Used to Boot the System 4-38

Software Commands Associated with Flash Memory 4-38

Enabling Booting from Flas h Memory 4-40

Copying Files t o Flash Memory 4-41

Copying a Cisco IOS Software Image into a Flash Memory

Card 4-42

Copying Cisco IOS Software Images between Flash Memory

Cards 4-44

Copying System Co nfiguration Files Between RP Memory and a Flash

Memory Card 4-46

Recovering from Locked Blocks in Flash Memory Cards 4-49

What To D o Next? 4-50 If You Need More Configuration Information 4 - 50

Chapter 5 Troubleshooting the Installation 5-1

Troubleshooting Overview 5-2

Problem Solving with Subsystems 5-2 Identifying Startup Problems 5-4

Troubleshooting the Power Subsystem 5-7 Troubleshooting the Processor Subsystem 5-9

Troubleshooting the RP 5-10 Troubleshooting the Line Cards 5-12 Troubleshooting Using the Alarm Card 5-14

Troubleshooting the Cooling Subsystem 5-15 Additional Reference Information for Troubleshooting 5-17

Chapter 6 Running Diagnostics on the Cisco 12012 6-1

Diagnostic Test Overview 6-1 Using the diag Command 6-3 Diagnostic Testin g Sequence 6-4 Loading and Running Diagnostics 6-4

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Diagnostic Examples 6-6

Without ve rbose Option 6-6

With verbose Option 6-7

Failed Diagnostic 6-9

Chapter 7 Maintaining the Cisco 12012 7-1

Cleaning and Replacing the Air Filter Assembly 7-2

Removing the Air Filter 7-3 Cleaning the Air Filter 7-7 Replacing the Air Filter Assembly 7-7

Removing the Old Air Filter Assembly 7-7

Installing A New Air Filter Assembly 7-9

Removing and Replacing an AC-Input Power Supply 7-12

Removing an AC-Input Power Supply 7-12 Installing a New or Replacement AC-Input Power Supply 7-15 Checking the Replacement of an AC-Input Power Supply 7-17

Removing and Replacing a DC-Input Power Supply 7-19

Removing a DC-Input Power Supply 7-19 Installing a New or Replacement DC-Input Power Supply 7-25 Checking the Replacement of a DC-Input Power Supply 7-30

Removing and Replacing a Blower Module 7-32 Removing and Replacing the Card Cage Assembly 7-33

Powering Down the Cisco 12012 7-34 Removing the Power Supplies 7-34 Removing the Cards from the Upper Card Cage 7-34

Removing a Line Card from the Upper Card Cage 7-35

Removing a RP from the U pper Card Ca ge 7-37

Removing an Alarm Card from the Upper Card Cage 7-37 Removing the Cards from the Lower Card Cage 7-38 Removing the System Grounding 7-38 Removing the Card Cage Assem bly 7-39 Installing a New Card Cage Assembly 7-39 Replacing the Cards in the Lower Card Cage 7-40 Replacing the Cards in the Upper Card Cage 7-40 Reattaching the System Grounding 7-41

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Replacing the Power Supp lies 7-41

Removing and Replacing a Route Processor 7-42 Removing and Replacing an Alarm Card 7-43 Removing and Replacing a Clock and Scheduler Card or Switch Fabric

Card 7-45 Upgrading RP and Li ne Card Memory 7-45

Appendix A Repackaging the Cisco 12012 A-1

Tools Required A-2 Safety Recommendations A-2 Removing the Cisco 12012 from a Rack A-3

Powering Down the Cisco 12012 A-3 Removing the Blower Modules A-3 Removing the Card Cage Assem bly A-3 Removing the Frame from the Rack A-4

Replacing Components in the Cisco 12012 A-6

Replacing the Blower Modules A-6 Replacing the Card Cage Assembly A-6

Completing the Repackaging A-7

Repackaging the Redundant AC-Input Power Supplies A-7 Repackaging the Accessories Box A-8 Installing the Side Panels, End Panels, and Top of the Shipping Container A-8

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FIGURES

Figure 1-1 Cisco 12012 (Front View, AC-Input Power Supplies Shown) 1-3 Figure 1-2 Gigabit Route Processor (Front Panel View, Horizontal Orientation Shown) 1-5 Figure 1-3 GRP (Horizontal Orientation Shown) 1-8 Figure 1-4 Performance Route Processor (Front Panel View, Horizontal Orientation

Shown) 1-14

Figure 1-5 PR P ( H orizo ntal Orientation) 1-16 Figure 1-6 Alarm Card Faceplate LEDs, Switches, and Connectors 1-25 Figure 1-7 Lower Card Cage 1-26 Figure 1-8 AC-Input Power Supply 1-30

Figure 1-9 DC-Input Power Supply 1-32 Figure 1-10 Cisco 12012 Power Distribution 1-33 Figure 1-11 Blower Module (Shown wit hout the Blower Module Front Cove r) 1- 34 Figure 1-12 Internal Air Flow (Side View) 1-35 Figure 1-13 Cable-Management System 1-38

Figure 2-1 Cisco 12012 Frame Outer Dimensions (Top View) 2-9

Figure 2-2 AC Power Cords 2-13

Figure 2-3 DC Power Cable Lug 2-14

Figure 3-1 Installing the Brace Bar 3-4

Figure 3-2 Removing the Blower Module Front Cover 3-5

Figure 3-3 Removing the Blower Module 3-6

Figure 3-4 Cisco 12012 Card Cage Assembly 3-7

Figure 3-5 Removing a Ca rd from the Upper Card Cage (GRP Shown) 3-9

Figure 3-6 Opening the Air Filter Tray 3-11

Figure 3-7 L atching the Lower Card Cage Air Deflector 3-12

List of Figures xiii

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Figure 3-8 Removing Cards from the L ower Card C age 3 -13

Figure 3-9 Removing a DC-Input Power Suppl y 3-15 Figure 3-10 Removing the Card Cage Assembly from the Frame 3-19 Figure 3-11 Frame Mounting Hole Groups 3-20 Figure 3-12 Installing the Fr am e in the Rack 3-22 Figure 3-13 Attaching an Interface Cable to a Line Card 3-32 Figure 3-14 Console and Auxiliary Port Connections 3-33 Figure 3-15 RJ-45 and MII Ethernet Connections 3-37 Figure 3-16 Ethernet MII Receptacle 3-38 Figure 3-17 Ethernet RJ-45 Receptacle 3-39 Figure 3-18 PRP Console and Auxiliary Port Connections 3-41 Figure 3-19 Using the Ethernet Port on the PRP 3-44 Figure 3-20 RJ-45 Receptacle and Plug (Horizontal Orientation) 3-45 Figure 3-21 Straight-Through Cable Pinout (Connecting MDI Ethernet Port to MDI-X

Wiring) 3-46

Figure 3-22 Crossover Cable Pinout (for Connecting Two PRPs) 3-46 Figure 3-23 Alarm Card Connectors 3-48 Figure 3-24 System Grounding Receptacles 3-51 Figure 3-25 Attaching a Grounding Lug to the Grounding Receptacles 3-52 Figure 3-26 Connecting Source AC to the AC-Input Po wer Supply 3-55 Figure 3-27 DC Power Cable Lug 3-57 Figure 3-28 Removing the DC-Input Power Supply Front Cover and Cable Bracket 3-59 Figure 3-29 Connecting the Source DC Power Cable Leads t o the D C- Inpu t Po wer S upp l y 3-61 Figure 3-30 Reins talling the DC-Input Power Supply 3-63

Figure 4-1 RP Alphanumeric LED Displays (Partial Front Panel View) 4-3

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Figure 4-2 Installin g and Removing a Flash Memory Card 4 -36

Figure 7-1 Connecting an ESD-Preventive Strap to the Cisco 12012 7-4

Figure 7-2 Removing the Air Filter 7-6

Figure 7-3 Remo vi ng the S crews fro m the Old Air Filter Tray 7-8

Figure 7-4 New Air Filter Hinge Holes and Chassis Holes Alignment 7-10

Figure 7-5 Installin g the New Air Filter in the New Air Filter Tray 7 -11

Figure 7-6 Disconnecting an AC-Input Power Supply 7-13

Figure 7-7 Removing an AC-Input Power Supply 7-14

Figure 7-8 Removing a DC-Input Power Suppl y 7-21

Figure 7-9 Removing the DC-Input Power Supply Front Cover 7-22 Figure 7-10 Removing the Power Cable Bracket 7-23 Figure 7-11 Disconnecting the DC-Input Power Supply 7-24 Figure 7-12 DC Power Cable Lug 7-26 Figure 7-13 Installing a DC -Input Power Supply 7-29 Figure 7-14 Removing the Interface Cables from a Line Card 7-36 Figure 7-15 Removing an Alarm Card 7-44

Figure A-1 Removing the Frame from the Rack A-5 Figure A-2 Cisco 12012 Shipping Packaging A-9

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TABLES

Table 1-1 GRP Memory Components 1-7 Table 1-2 DRAM Configurations 1-9 Table 1-3 PRP Memory Components 1-17 Table 1-4 Supported Flash Disk Sizes and Product Numbers 1-19 Table 1-5 Switch Fabric Configurations 1-27 Table 1-6 Cisco 12012 Physical Specificatio ns 1-40 Table 1-7 Cisco 12012 Electrical Specifications 1-41 Table 1-8 Cisco 12012 Environmental Specificat ions 1-41 Table 1-9 Agency Approvals 1-42 Table 2-1 Site Environment Requirements 2-11 Table 2-2 Source AC Power Specifications 2-12 Table 2-3 AC Power Cord International Options 2-13 Table 2-4 Source DC Power Specifications 2-14 Table 2-5 SONET Maximum Fiber-Optic Transmission Distances 2-17 Table 2-6 Typical Fiber-Optic Link Attenuation and Dispersion Limits 2-18 Table 2-7 Estimating Link Loss 2- 19 Table 2-8 Line Card SONET Signal Requirements 2-19 Table 2-9 Site Log Example 2-25 Table 3-1 GRP Console Port Signals 3-35 Table 3-2 Auxiliary Port Signals 3-35 Table 3-3 Ethernet MII Pinout 3-38 Table 3-4 Ethernet RJ-45 Pinout 3-39 Table 3-5 PRP Console Port Signals 3-42 Table 3-6 PRP Auxiliary Port Signals 3-42

List of Tables xvii

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Table 3-7 PRP RJ-45 Ethernet Receptacle Pinout 3-45 Table 3-8 Specifications and Connection Limits for 100-Mbps Transmission 3-47 Table 3-9 IEEE 802.3u Physical Characteristics 3-47

Table 3-10 Alarm 1 and Alarm 2 Connector Pinout 3-49

Table 4-1 RP Alphanumeric LED Display Sequences 4-4 Table 4-2 Line Card A lphanumeric LED Display Sequences 4-4 Table 4-3 Software Configuration Register Bit Meanings 4-25 Table 4-4 Explanat ion of Boot Field (Configuration Register Bits 00 to 03) 4-25 Table 4-5 Default Boot Filenames 4-29 Table 4-6 Configuration Register Settings for Br oadcast Address Destination 4-30 Table 4-7 System Console Terminal Transmission Rate Settings 4-30 Table 5-1 RP Alphanume ric LED Display Me ssages 5-10 Table 5-2 Line Card Alphanumeric LED Display Messages 5-13

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About This Guide

This section explai ns the objectiv es, intended audience, and org anization of this installat ion and configuration gu ide. Also included are the con ven tions used to con ve y instructions and information.

Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Docum entation CD-R OM, a member of the Cisco Co nnection Family, is updated monthly. Therefore, it might be more up to date than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call cus tomer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

Document Objectives

This installation and configuration guide explains th e hardware installation and basic configuration procedures for a Cisco 12012 Gigabit Switch Router (GSR). It contains procedures for installing the hardware, creating a basic configuration file, and starting up the router . After comp leting the installation and basic conf igu ration procedures cov ered in this guide, you will then use the appropriate companion publications to configure your system more completely.

Audience

T o use this publication, you should be familiar with Cisco or equivalent router hardware and cabling, electronic circuitry and wiring practices, and preferably have experience as an electronic or electromechanical technician.

About This Guide xix

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Document Organization

This installation and configuration guide is organized into the following chapters and appendixes:

• Chapter 1, “Product Overview,” provides an introduction to the Cisco 12012 with a

description of the system’s components.

• Chapter 2, “Preparing for Installation,” is a preparatory chapter that describes safety

considerations, tools required, an overview of the installation, and procedures you should perform before the actual installation.

• Chapter 3, “Installing a Cisco 12012,” provides instructions for installing the hardware

and connecting the external network interface cables.

• Chapter 4, “Observing System Startup and Performing a Basic Configuration,”

provides simple procedures for completing a basic system configuration and for checking and saving this configuration to system memory.

• Chapter 5, “Troubleshooting the Installation,” provides guidelines for troubleshooting

the Cisco 1201 2 ha r dware installation.

• Chapter 6, “Running Diagnostics on the Cisco 12012,” describes how to load and run

the Cisco 12012 field diagnostics.

• Chapter 7, “Maintaining the Cisco 12012,” provides simple maintenance procedures

that you might need to per form after yo u hav e inst alled the Ci sco 12012. Also included are removal and replacement procedures for the field replaceable units.

• Appendix A, “Repackaging the Cisco 12012,” provides instructions on repacking the

Cisco 12012 if you need to transport it to another site.

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Document Conventions

This publication uses the following conventions:

• The symbol ^ represents the ke y labeled Control. For examp le, the key combination ^z

means hold down the Control key while you press the z key.

Command descriptions use these conventions:

• 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 you should b e at the user level, and the prompt the privileged level. Acces s to the pri vile ged le vel usually req uires a password. R efer to the related software conf iguration an d reference documentation listed in the section “I f You Need More Configuration Information” in Chapter 4 for additional information.

• Commands and keywords are in boldface font.

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

Document Conventions

router> indicates that

router# indicates that you should be at

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

• Alternative but requ ired k e ywor ds are grouped in braces ( { }) and separated by v ertical

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.

About This Guide xxi

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Document Conventions

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

in equipment damage or loss of data.

Note Means r eader take no te. 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.

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 prev enting 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.

Waarschuwing Dit waarschuwingssymbool betekent gevaar . U verkeert in een situatie die

lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarsch uwingen die in deze publicatie verschijnen, k unt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.

Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa

ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvi en varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).

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Document Conventions

Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une

situation pouvant cau ser des bl essure s ou des do mmag es corpo rels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous a v ec les p rocédures c ouramment utilisées po ur éviter les accid ents. Pour prendre connaissance des traductions d’avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformit é aux règlements et consignes de sécurité) qui accompagne cet appareil.

Warnung Dieses W arnsymbo l bedeutet Gefahr . Sie befind en sich in einer Situation, die zu

einer Körperverletzung führ en könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen v erb undenen Gefahren un d der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.

Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe

causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai cir cuiti elettrici ed essere al corr ente delle p ratiche s tandar d per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositi vo.

Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til

personskade. Fø r du utfører arbeid på utstyr , må du v are oppmerksom på de faremom entene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.

Aviso Este símbolo de aviso indica perigo. Encontra-se nu ma situação que lhe poderá

causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam pr e ven ir possív eis acidentes. Pa ra v er as traduções d os a visos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.

About This Guide xxiii

Page 24

Obtaining Documentation

¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad

física. Antes de manipu lar cualquier equipo, co nsiderar los ri esgos que entraña la co rriente eléctrica y familiarizarse con los procedimientos estándar de pre vención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.

Varning! Denna varningssymbol sig nalerar fara. Du befinner dig i en situation som kan

leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av för eskrifter och säkerhetsinformation), vilket medföljer denna anordning.

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL: http://www.cisco.com/univercd/home/home.htm You can access the Cisco website at this URL: http://www.cisco.com You can access international Cisco websites at this URL: http://www.cisco.com/public/countries_languages.shtml

xxiv Cisco 12012 Gigabit Switch Router Installation and Configuration Guide

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Ordering Documentation

You can find instructions for ordering documentation at this URL: http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm You can order Cisco documentation in these ways:

• Registered Cisco.com users (Cisco direct customers) can order Cisco product

documentation from the Ordering tool:

http://www.cisco.com/en/US/partner/ordering/index.shtml

• Nonregistered Cisco.com users can order documentation through a local account

representative by calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

Ordering Documentation

You can send comments about technical documentation to bug-doc@cisco.com. You can submit comments by using the respon se card (if present) behind the fro nt cover of

your document or by writing to the following address: Cisco Syste ms

Attn: Customer Document Ordering 170 West Tasman Drive San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-wi nning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco T ech nical Assistance Center (T A C) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.

About This Guide xxv

Page 26

Cisco Technical Support Website

The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year at this URL:

http://www.cisco.com/techsupport Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID

and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:

http://tools.cisco.com/RPF/register/register.do

Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those i n which your network is minimally impaired or for which you require prod uct informati on.) After you des cribe your si tuation, the TAC Service Request Tool automatically provides recommended solutions. If your issue is not resolved using the recommended resources, your service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:

http://www.cisco.com/techsupport/servicerequest For S1 or S2 service requests or if you do not ha ve Internet access, contact the Cisco T AC

by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

To open a service request by telephone, use one of the following numbers: Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)

EMEA: +32 2 704 55 55 USA: 1 800 553 2447

For a complete list of Cisco TAC contacts, go to this URL: http://www.cisco.com/techsupport/contacts

xxvi Cisco 12012 Gigabit Switch Router Installation and Configuration Guide

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Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.

Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degrad ed, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Sev erity 3 (S3) —Operat ional per formance of your net work is impaired , b ut most b usines s operations remain functi onal. Y ou and Cisco wi ll commit resources during normal business hours to rest ore service to satisfactory levels.

Severity 4 (S4)—You require in for m ation or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Information about Cisco products, t echnologies, and network solutions is available from various on line and printed sources.

• Cisco Marketplace provides a variety of Cisco books, reference guides, and logo

merchandise. Visit Cisco Marketplace, the company store, at this URL: http://www.cisco.com/go/marketplace/

• The Cisco Product Catalog describes the networking products offered by

Cisco Systems, as well as ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://cisco.com/univercd/cc/td/doc/pcat/

• Cisco Press publishes a wide range of general networking, training and certification

titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:

http://www.ciscopress.com

About This Guide xxvii

Page 28

Obtaining Additional Publications and Information

• Packet magazine is the Cisco Systems technical user maga zine for maximizing In ternet

and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, techno logy breakthr oughs, and Cisc o products and sol utions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. Yo u can access Packet magazine at this URL:

http://www.cisco.com/packet

• iQ Magazine is the quarterly publication from Cisco Systems designed to help growing

companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

• Internet Protocol Journal is a quarterly journal published by Cisco Systems for

engineering professionals involved in designing, developing, and operating public and priv ate internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

• Wor ld-class netw orking training is av ailable from Ci sco. You can view current of ferings

at this URL: http://www.cisco.com/en/US/learning/index.html

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CHAPTER

Product Overview

This chapter provides physical and functional overviews of the Cisco 12012 Gigabit Switch Router (GSR). It contains physical des criptions of the router hardware and major components, and functional descriptions of the hardware-related features.

The Cisco 12012 is a member of the Cisco 12000 series of gigabit switch routers. The Cisco 12012 is aimed at scaling the Internet and enterprise backbones to speeds of OC-3/STM -1 (155 Mb ps), OC-12/STM-4 (622 Mbps), and OC-48/STM-16 (2.4 Gbps). The Cisco 12012 is built around a high-speed switch ing fabric t hat is scalable from 5 t o 60 Gbps, providing high-performance to support IP-based local and wide-area networks (WANs).

The Cisco 12012 has two separate card cages; the upper card cage and the lower card cage. The upper card cage has 12 user -config urable slots that support a comb ination of line cards and a Route Processor (RP). The rightmost slot in the upper card cage supports a non-configurable alarm card. Network interfaces reside on line cards that provide connection between the router’s switch fabric and the external networks.

The lower card cage has five slots for the cards contai ning the switch fabric: clock and scheduler cards (CSCs) and switch fabric cards (SFCs). The lower card cage is k e yed ; the top two slots accept clock and s cheduler cards, and the lower th ree slots accept switch fabric cards.

You can configure the Cisco 12012 for either source A C operation or source DC operation. AC-inp ut or DC-input powe r supplies resi de in a powe r supply bay located n ear the bottom of the frame.

Note The Cisco 12012 does not support a mixture of AC- and DC-input power supplies.

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Physical and Functional Overviews

Warning AC operation requires a minimum configuration of two AC-input power

supplies.

Two blower modules, one mounted at the top of the frame and one mounted at the bottom of the frame, provide cooling air to the system.

Physical and Functional Overviews

The Cisco 12012 is a modular system consisting of the following components (see Figure 1-1):

• Frame—a rigid metal structure that is 19-inches (48.3-cm) wide, 21-inches (53.3-cm)

deep, and 56-inches (142.2-c m) high and weighs 75 lb (34 kg) empty . Thr ee sets of rails in the frame support the other three major components: a card cage assembly and two blower modules. The frame mounts into either a telco-style or four-post rack that is secured to the building structure.

• Card cage assembly—a sheet metal enclosure that mounts in the frame. The card cage

assembly consists of the upper card cage, the lo wer card cage, and the power supply bay . All three components are tied together electrically th rou gh a pas s i ve system backplane in the back of the card cage assembly. The upper card cage has 12 vertical slots for line cards and an RP. A unique slot (rightmost slot) in the upper card cage supports an alarm card. The lower card cage has five horizontal slots for the switch fabric. A removable air filter in a hinged air filter tray is mounted in front of the lower card cage. The power supply bay is at the botto m of the card cage assembly; it has slots for up to four A C-input power supplies or up to two DC-input power supplies.

• Blower modules—two identical blower modules that slide on rails into the top and

bottom of the frame. The y provide cooling air for all of the component s in the card cage.

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Physical and Functional Overviews

Figure 1-1 Cisco 12012 (Front View, AC-Input Power Supplies Shown)

Top blower module (behind front cover)

Upper card cage

Air filter tray

Power supply bay

Bottom blower module (behind front cover)

Frame

A C T

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Physical and Functional Overviews

The front of the Cisco 12012 provide s access to all system compo nents, making the system easy to service. All its major compon ents are f ield- replaceable units (FRUs), including the following:

• Gigabit Route Processor (GRP) or Performance Route Processor (PRP)

• Line cards

• Clock and scheduler cards

• Switch fabric cards

• Alarm card

• Power supplies

• Blower modules

The following sections pr o v ide br ie f overviews of each FR U. Chapter 7, “Maintaining the Cisco 12012,” and separate documents called configuration notes contain instructions for removing and replacing FRUs.

For information on ordering FRUs, contact a customer service representative.

Gigabit Route Processor

Each Cisco 12012 GSR has one main system (or route) processor . The route processor (RP) processes the network routing protocols and distributes updates to the Cisco Express Forwarding (CEF) tables on the line cards. The RP also performs general maintenance functions, such as diagnostics, console support, and line card monitoring.

Two types of RPs are available for the Cisco 12012 GSR:

• Gigabit Route Processor (GRP)

• Performance Route Processor (PRP)

When not explicitly specified, this document uses the term route processor (RP) to indicate either the GRP or the PRP.

Note If you install a second, redundant RP, it must be of the same type as the primary RP.

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Physical and Functional Overviews

This section provides information about the Gigabit Route Processor (GRP) (see Figure 1-2) and its use as the main system processor for the Cisco 12012.

This section provides information on the following GRP functionality:

• Memory components

• System st atus LEDs

• Soft reset switch

• PCMCIA s lots

• Asynchronous serial ports

• Ethernet port

If you have a PR P, see the “Performance Route Processor” section.

Figure 1-2 Gigabit Route Processor (Front Panel View, Horizontal Orientation

Shown)

EJECT

SLOT-1

RESET

SLOT-0

AUX

CONSOLE

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RJ-45

MII

GIGABIT ROUTE PROCESSOR

COLL

The primary functions of the GRP are as follows:

• Downloading the Cisco IOS software to all of the installed line cards at power up

• Providing a console (terminal) port for router configuration

• Providing an auxiliary port for other external equipment (such as modems)

• Providing an IEEE 802.3, 10/100-me gabits-p er-second (Mbps) Ethernet por t for Telnet

functionality

• Running routing protocols

• Building and distributing routing tables to line cards

• Providing general system maintenance functions

H10548

Product Overview 1-5

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Physical and Functional Overviews

The GRP communicates with the line cards either through the switch fabric or through a maintenance bus (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 GRP. The MBus connection allows the GRP to download a system bootstrap image, collect or load diagnostic information, and perform general, internal system maintenance operations. The GRP plugs into any slot in the upper car d cage in the Cisco 12012 e xcept the rightmost slot, which is reserved for the alarm card.

The GRP contains the following components:

• IDT R5000 Reduced Instruction Set Computing (RISC) processor used for the CPU.

The CPU runs at an external bus clock speed of 100 MHz and an internal clock speed of 200 MHz.

• Up to 256 megabytes (MB) of parity-protected, extended data ou tput (EDO) dynamic

random-access memory (DRAM) on t wo, 60-nanosecond (ns), dual in-line memory modules (DIMMs); 64 MB of DRAM is the minimum shipping configuration.

• 512 kilobytes (KB) of static random-access memor y (SRAM) for secondary CPU cache

memory functions (SRAM is not user configurable or field upgradeable).

• 512 KB of NVRAM (NVRAM is not user configurable or field upgradeable).

• Most of the additional memory components used by the system, including onboard

Flash memory (8-MB) and up to two PCMC IA-based Flash memor y cards. The def ault GRP PCMCIA Flash memory is 20 megabytes (MB).

• Air-temperature sensors for environmental monitoring.

The Cisco IOS software im ages that run the Cis co 12012 reside i n Flash memory, which is located on the GRP in the form of a single in-line memory module (SIMM), and on up to two Personal Computer Memory Card International Association (PCMCIA) cards (called Flash memory cards) that insert in the two PCMCIA slots (slot 0 and slot 1) on the front of the GRP. (See Figure 1-2.) Storing the Cisco IOS images in Flash memory enables you t o download and boot from upgraded Cisco IOS images remotely or from software images resident in GRP Flash memory.

The Cisco 12012 supports downloadable system software for most Cisco IOS software upgrades, which enabl es yo u to remotely do w nload, st ore, an d boot f rom a ne w Cisco IO S image.

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GRP Memory Components

Table 1-1 lists the memory components on the GRP. Figure 1-3 shows the location of the DRAM and Flash SIMM on the GRP.

Table 1-1 GRP Memory Components Type Size Quantity Description

Physical and Functional Overviews

DRAM 641 to 256 MB

1 or 2 64- or 128-MB DIMMs (based on

DRAM required) for main Cisco IOS software functions.

SRAM 512 KB (fixed)

SRAM for secondary CPU cache memory functions.

NVRAM 512 KB (fixed)

Nonvolatile random-access memory for the system configuration file.

Flash Memory (SIMM)

Flash Memory (card)

8 MB 1 Contains Cisco IOS software images and

other user-defined files on the GRP.

20 MB

Up to 2 Contains Cisco IOS software images and

other user-defined files on up to two PCMCIA-based Flash memory cards.

Flash boot ROM 512 KB 1 Flash EPROM for the ROM monitor

program bo ot im ag e .

1. 64 MB of DRAM is the default DRAM configuration for the GRP.

2. SRAM is not user configurable or fi el d upgradeable.

3. NVRAM is not user configurable or field upgradeable.

4. SIMM socket is wired for Cisco’s own design and does not accept industr y-sta nd ard 80-pin Flash SIMMs.

5. 20-MB Flash memory card is the default shipping configuration for the Cisco 12012.

6. Type 1 or Type 2 PCMCIA cards can be used in eithe r P CMC IA slot.

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Physical and Functional Overviews

Figure 1-3 GRP (Horizontal Orientation Shown)

Backplane connector

Bank 2 DRAM DIMMs Bank 1

PCMCIA slots

slot 0: bottom

slot 1: top

U42

U39

U17

-1

-0

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Console port

-4

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(RJ-45 or MII)

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GIGABIT ROUTE PROCESSOR

Alphanumeric

LED displays

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Physical and Functional Overviews

DRAM

The extended data output (EDO) dynamic random-access memory (DRAM) on the GRP stores routing tables, protocols, and network accounting applications, and runs the Cisco IOS software. The standard (default) GRP DRAM configuration is 64 megabytes (MB) of EDO DRAM, which you can increase up to 256 MB through DRAM upgrades. The Cisco IOS software runs from within GRP DRAM. Table 1-2 lists the DRAM configurations and upgrades.

Table 1-2 DRAM Configurations Total DRAM Product Numbers DRAM Sockets Number of DIMMs

64 MB 128 MB MEM-GRP/LC-64(=) U39 (bank 1) and

128 MB MEM-GRP/LC- 128(=) U39 (bank 1) 1 128-MB DIMM

MEM-GRP/LC-64(=) U39 (bank 1) 1 64-MB DIMM

U42 (bank 2) 2 64-MB DIM Ms

256 MB MEM-GRP/LC- 256(=) U39 (bank 1) and

U42 (bank 2) 2 128-MB DIMMs

1. 64-MB is the standard (default) DRAM configur ation for the GRP.

Caution

To prevent memory problems, DRAM DIMMs must be 3.3-volt (V),

60-nanosecond (ns) devices. Do not attempt to install other devices in the DIMM sockets.

SRAM

SRAM provides secondary CPU cache memory. The standard GRP configuration is 512 KB. Its principle function is to act as a staging area for routing tables update information to and from the line cards. SRAM is not user conf igurable or field-up gradeable.

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Physical and Functional Overviews

NVRAM

The system configuration, software configuration register settings, and environmental monitoring logs are contained in the 512-KB NVRAM, which is backed up with built-in lithium batteries that retain the contents for a minimum of five years. NVRAM is not user configurable or field-upgradeable.

Caution Before you replace the GRP in the system, back up the running conf iguration to

a Tri vial File Transfer Protocol (TFTP) f ile server or an installed Flash memor y card so you can retrieve it later. If the configuration is not saved, the entire configuration will be lost—inside the NVRAM on the removed G RP—and you will have to reenter the entire configuration manually. This procedure is not necessary if you are temporarily removin g a GRP; lithium batteries retain the conf iguration in mem ory until you r eplace the GRP in the system.

Flash Memory

Both the onboard and PCMCIA card-based Flash memory allo w you to re motely load and store multiple Cisco IOS software and microcode images. You can download a new image over the network or from a local server and then add the new image to Flash memory or replace the existing files. You can then boot the routers either manually or automatically from any of th e stored images. Flash memo ry also functions as a TFTP s erver to allo w other servers to boot remotely from stored images or to copy them into their own Flash memory.

System Status LEDs

This section describes the two types of system status LEDs used on the GRP: LED indicators and alphanumeric LED displays.

• The GRP has the following eight LED indicators:

— Two PCMCIA activity LEDs (one per PCMCIA slot): these LEDs light when the

— Four RJ-45 Ethernet port LEDs: these LEDs are used in conjunction with the RJ-45

slot is accessed. The LEDs receive power from the switched slot voltage.

Ethernet connector. When the MII Ethernet port is in use, the LEDs are disabled. The LEDs indicate link activity, collision detection, data transmission, and data reception.

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Physical and Functional Overviews

— T wo RJ-45 or MII Ether net port select LEDs: these LEDs, when o n, identify which

one of the two Ethernet connections you selected. When the RJ-45 port is selected, its LED is on and the MII LED is off. When the MII port is selected, its LED is on and the RJ-45 LED is off.

• The alphanumeric displays are organized as two rows of four characters each. The

displays’ content is controlled by the MBus module software. The displays’ content is controlled by the GRP’s MB us modu le softw are. Both ro w s of the disp lay are powered by the MBus module.

These alphanumeric displays provide information about the following:

— System status messages that are displayed during the boot process — System status messages that are displayed after the boot process is complete

During the boot process, the alphanumeric LED displays are controlled directly by the MBus. After the boot process, they are controlled by the Cisco IOS software (via the MBus), and display messages designated by the Cisco IOS software.

Note A complete, descriptive list of all system and error messages is located in the Cisco

IOS System Error Messages publications.

Soft Reset Switch

A soft reset switch provides a r eset to the R5000 's software on the GRP. Access to the soft reset switch is through a small opening in the GRP faceplate. To depress the switch, you must insert a paperclip or similar sharp pointed object into the opening.

Caution To pre vent system problems or loss of data, use the soft reset switch only at the

advice of Cisco service personnel.

The following levels of system operation are displayed:

— Status of the GRP — System error messages — User-defined status/error mes sages

Product Overvi ew 1-11

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Physical and Functional Overviews

PCMCIA Slots

The GRP has two PCMCIA slots av ailable. Either s lot can support a Flash mem ory card or an input/output (I/O) d evice as lon g as the device re quires only +5 VDC. The GRP s upports T ype 1 and T ype 2 d evices; it does n ot support +3.3 VDC PCMCIA de vices. Each PCMCIA slot has an ejector button for ejecting a PCMC IA card from the slot.

Asynchronous Serial Ports

Two asynchronous serial ports on the GRP, the console and auxiliar y po rts, allow you to connect external devices to monitor and manage the system. The console port is an Electronics Industries Association/Telecommunications Industry Association (EIA/TIA)-232 receptacle (female) that provides a data circuit-terminating equipment (DCE) interface for connecting a console terminal.

Note EIA/TIA-232 was known as recommended standard RS-232 before its acceptance

as a standard by the Electronic Industries Association (EIA) and Telecommunications Industry Association (TIA).

Ethernet Port

The auxiliary port is an EIA/TIA-232 plug (male) that provides a d ata terminal eq uipment (DTE) interface; the auxiliary port supports flow control and is often used to connect a modem, a channel service u nit (CSU), or other optional equipment f or Telnet management.

The GRP has one Ethernet port available, using one of t he following two connection types:

• RJ-45 receptacle: an 8-pin media dependent interface (MDI) RJ-45 receptacle for either

IEEE 802.3 10BaseT (10 Mbps) or IEEE 802.3u 100BaseTX (100 Mbps) Ethernet connections.

• MII receptacle: a 40-pin media independent interface (MII) receptacle that provides

additional flexibility in Ethernet connections. The pinout of this standard 40-pin receptacle is defined by the IEEE 802.3u standard.

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Note The RJ-45 and MII receptacles on the GRP represent two physical connection

options for one Ethernet interface; therefore, you can use either the MDI RJ-45 connection or the MII connection, but not both simultaneously.

Performance Route Processor

Two types of RPs are available for the Cisco 12012 GSR:

• Gigabit Route Processor (GRP)

• Performance Route Processor (PRP)

Physical and Functional Overviews

When not explicitly specified, this document uses the term route processor (RP) to indicate either the GRP or the PRP.

Note If you install a second, redundant RP, it must be of the same type as the primary RP.

The section describes the Performance Route Processor (PRP) and includes the following information:

• PRP Memory Co mponents

• System St atus LEDs

• Soft Reset Switch

• PCMCIA Sl ots

• Asynchronous Serial Ports

• Ethernet Port

If you have a GRP, see the “Gigabit Route Processor” section.

Product Overvi ew 1-13

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Physical and Functional Overviews

Figure 1-2 shows the front panel view of the PRP.

Figure 1-4 Performance Route Processor (Front Panel View, Horizontal Orientation Shown)

EJECT

ETH 1ETH 0 AUX

SLOT-1 SLOT-0

RX TX

LINK

RX TX

LINK

CONSOLE

RESET

PERFORMANCE ROUTE PROCESSOR 1 (PRP-1)

The PRP is available as Product Number PRP-1=, which includes one PRP with 512 MB of synchronous dynamic random-access memory (SDRAM) and one 64-MB advanced technology attachment (ATA) Flash disk.

The primary functions of the PRP are as follows:

• Downloading the Cisco IOS software to all of the installed line cards at power up

• Providing a console (terminal) port for router configuration

• Providing an auxiliary port for other external equipment (such as modems)

• Providing two IEEE 802.3, 10/100-megabits-per-second (Mbps) Ethernet ports for

Telnet f unc tionality

• Running routing protocols

• Building and distributing routing tables to line cards

• Providing general system maintenance functions

75041

• Communicating with line cards either through the switch fabric or through the

maintenance bus (MBus) The MBus connection allows the PRP to do wnload a system bootstr ap image, collect or

load diagnostic information, and perform general, internal system maintenance operations. The switch fabric connection is the main data path for routing table distribution as well as for packets that are sent between line cards and the PRP.

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Physical and Functional Overviews

The PRP contains the following components:

• Motorola PowerPC 7450 central processing unit (CPU). The CPU runs at an external

bus clock speed of 133 MHz and an internal clock speed of 667 MHz.

• Up to 2 GB of SDRAM on two PC133-compliant, dual in-line memory modules

(DIMMs). 512 MB of SDRAM is the default shipping configuration. SDRAM is field replaceable.

• Two MB of SRAM for secondary CPU cache memory functions. SRAM is not user

configurable or field replaceable.

• Two MB of NVRAM. NVRAM is not user configurable or field replaceable.

• Additional memory components used by the system, including onboard Flash memory

and up to two Flash memory cards.

• Air-temperature sensors for environmental monitoring.

The Cisco IOS software images th at run the C isco 12000 series Internet Router system are stored in Flash memory. Two types of Flash memory ship with the PRP:

1 Onboard F lash memory — Ships as a single in-line memory module (SIMM). This

Flash memory contains the Cisco IOS boot image (bootflash) and is not field replaceable.

2 Flash disk— The PRP ships with a Flash disk that can be installed in either Flash disk

slot. (See Figure 1-5.) The Flash disk contains the Cisco IOS software image.

Storing the Cisco IOS images in Flash memory enables you to download and boot from upgraded Cisco IOS software images remotely, or from software images that reside in PRP Flash memory.

Cisco 12000 ser ies Internet Routers support do wnloadable system soft ware for m ost Cisco IOS software upgrad es. This enables you to remotely downlo ad, store, and boot fro m a new Cisco IOS software image. The Cisco IOS software runs from within the PRPs SDRAM.

Figure 1-5 shows the locations of the various hardware components on the PRP.

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Physical and Functional Overviews

Figure 1-5 PRP (Horizontal Orientation)

SLOT-1

SLOT-0

LINK

ETH 1ETH 0 AUX

LINK

CONSOLE

PERFORMANCE ROUTE PROCESSOR 1 (PRP-1)

5 7 8 109

75042

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1 Backplane connector 6 Ethernet ports 2 Flash SI MM (Socket number P3) 7 Auxiliary port

SDRAM DIMMs Bank 1 - Socket number U15

Bank 2 - Socket number U18 8 4 Ejector lever 9 Handle 5 Flash disk slots (covered) 10 Display LEDs

PRP Memory Components

Table 1-3 lists the memory components on the PRP.

Table 1-3 PRP Memory Components

Physical and Functional Overviews

Console port

Type Size Quantity Description

SDRAM

SRAM NVRAM Flash

memory

512 MB, 1 GB, or 2 GB

1 or 2 512-MB and 1-G B DIMMs (based on desired SDRA M

configuration) for main Cisco IOS software functions

2 MB (fixed) — Secondary CPU cache memo ry functions

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

64 MB SIMM

1 Cisco IOS boot image (bootflash), crash information, and other

user-defined files

Flash disks

1 or 2 Cisco IOS software images, system configuration files, and other

user-defined files on up to two Flas h disks

Flash boot

512 KB 1 Flash EPROM for the ROM monitor program boot image

ROM

1. Default SDRAM configuration is 512 MB. Bank 1 (U15) must be popul at ed first. You can use one or both banks to configure SDRAM combinations of 512 MB, 1 GB, or 2 G B. 1. 5-GB configurations are not supp orted.

2. SRAM is not user configurable or fiel d re pla c ea bl e.

3. NVRAM is not user configura bl e or field replaceable.

4. Flash memory SIMM is not user configurable or field rep lace ab le .

5. ATA Flash disks and Type I and Type II linear Flash memory cards a r e sup ported. See the “Flash Memory” section on page -19 for Flash disk information.

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Physical and Functional Overviews

Note If a single DIMM module is installed, it must be placed in bank 1 (U15).

SDRAM

SDRAM stores routing tables, protocols, and network accounting applications, and runs the Cisco IOS software. The default PRP conf iguration includes 512 MB of error checking and correction (ECC) SDRAM. DIMM upgrades of 512 MB and 1 GB are available. You cannot mix memory sizes. If tw o DIMMS are installed, they must be the same memory size.

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Physical and Functional Overviews

Caution Cisco Systems strongl y recommends that you us e only Cisco-approv ed memory .

To prevent memory problems, SDRAM DIMMs must be +3.3VDC, PC133-compliant devices. Do not attempt to install other devices in the DIMM sockets.

SRAM

SRAM provides 2 MB of parity-protected, secondary CPU cache memory. Its principal function is to act as a staging area for routing tab le updates and for inf ormation sent to and received from line cards. SRAM is not user configurable and cannot be upgraded in the field.

NVRAM

NVRAM provides 2 MB of memory for system conf iguration f ile s, softw are conf iguratio n register settings, and environmental monitoring logs. This information is backed up with built-in lithium batteries that retain the contents for a minimum of 5 years. NVRAM is not user configurable and cannot be upgraded in the field.

Flash Memory

Flash memory allows you to remotely load and store multiple Cisco IOS software and microcode images. You can download a new image o ver the netw ork or fro m a local serv er and then add the new image to Flash memor y or replace the existing files. You then can boot the routers either manually or automatically from any of the stored images.

Flash memory also functions as a Trivial File Transfer Protocol (TFTP) server to allow other servers to boot remotely from stored images or to copy them into their own Flash memory . The onboard Flash memo ry (called bootflash) contains the Cisco IOS boot image, and the Flash disk contains the Cisco IOS software image . A 64-MB AT A Flash disk ships by default with the PRP. Table 1-4 lists the supported Flash disk sizes and their C isco product numbers.

Table 1-4 Supported Flash Disk Sizes and Product Numbers Flash Disk Size

64 MB

Product Number

MEM-12KRP-FD64=

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Physical and Functional Overviews

Flash Disk Size

128 MB MEM-12KRP-FD128= 1 GB MEM-12KRP-FD1G=

1. Standard Type 1 and Type 2 linear Flash me m ory c ard s also are supported, although they may not have the capaci ty to meet the requirements of your configuration.

2. 64-MB ATA Flash disk is the default shi ppi ng configuration.

System Status LEDs

The sections describes the two types of system status LEDs used on the PRP: LED indicators and alphanumeric LED displays.

The device or port activity indicators consist of the following functional groups:

• Two Flash disk activity LEDs (labeled SLOT-0 and SLOT-1)—1 LED per Flash disk

slot: these go on when the slot is accessed.

• Four RJ-45 Ethernet port LEDs (labeled LINK, EN, T X, an d R X): u sed in conjunction

with each of the RJ-45 Ethernet connectors. Each connector includes a set of 4 LEDs that indicate link activity (LINK), port enabled (EN), data transmission (TX), and data reception (RX).

Product Number

• Two Ethernet connection LEDs (labeled PRIMARY): these two LEDs, when on,

identify which of the two Ethernet connections is selected. Since both ports are supported on the PRP, the LED on port ETH0 is always on. The ETH1 LED goes on when it is selected.

The alphanumeric display LEDs are o rg anized as two ro ws of four characters each and a re located at one end of the card. These LEDs provide system status and error messages that are displayed during and after the boot proces s. The boot process and the co ntent displayed are controlled by the PRPs MBus module software.

At the end of the boot process, the LEDs are controlled by the Cisco IOS so ftware (via the MBus), and the content displayed is designated by the Cisco IOS software.

The alphanumeric display LEDs provide information about the following:

• Status of the PRP

• System e rror messages

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• User-defined status and error messages

Note A complete, descriptive list of all system and error messages is located in the Cisco

IOS System Error Messages publications.

Soft Reset Switch

The soft reset switch causes a nonmaskable interrupt (NMI) and places the PRP in ROM monitor mode. When the PRP enters ROM monitor mode, its behavior depends on the setting of the PRP software configuration register. For example, when the boot field of the software configuration register is set to 0x0, and you press the NMI switch, the PRP remains at the ROM monitor prompt ( system manually. But if the boot field is set to 0x1, the system automatically boots the first IOS image found in the onboard Flash memory SIMM on the PRP.

Physical and Functional Overviews

rommon>) and waits for a user command to boot the

Caution The soft reset (NMI) switch is not a mechanism for resetting the PRP and

reloading the IOS image. It is intended for software development use. To prevent system problems or loss of data, use the soft reset switch only on the advice of Cisco service personnel.

Access to the soft reset switch is through a small opening in the PRP faceplate. To press the switch, you must insert a paper clip or similar small pointed object into the opening.

Flash Disk Slots

The PRP includes two Flash disk (PCMCIA) slots. Either slot can support an ATA Flash disk or a Type 1 or Type 2 linear Flash memory card. The PRP ships by default with one 64-MB ATA Flash disk.

Note The PRP only supports +5VDC Flash disk devices. It does not support +3.3VDC

PCMCIA devices.

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Physical and Functional Overviews

All combinations of different Flash devices are supported by the PRP. You can use ATA Flash disks, Type 1 or T ype 2 linear Flash memo ry cards, or a combination of the two. Each Flash disk slot has an ejector button for ejecting a card from the slot.

Note Type 1 and Type 2 linear Flash memory cards may not hav e the capacity to m eet the

requirements of your configuration.

Asynchronous Serial Ports

The PRP has two asynchronous serial ports, the console and auxiliary ports. These allow you to connect external serial devices to monitor and manage the system. Both ports use RJ-45 receptacles.

The console port prov ides a data circuit-terminating equipment (DCE) interface for connecting a console terminal. The auxiliary port provides a data terminal equipment (DTE) interface and supports flo w contr ol. It is often used to connect a modem, a chann el service unit (CSU), or other optional equipment for Telnet management.

Ethernet Ports

Line Cards

The PRP includes two Ethernet ports , both using an 8-pin RJ-45 r eceptacle for either IE EE

802.3 10BASE-T (10 Mbps) or IEEE 802.3u 100BASE-TX (100 Mbps) connections.

Note The transmission speed of the Ethernet ports is auto-sensing by default and is user

configurable.

The Cisco 12012 is shipped from the factory with up to 11 installed line cards that provide a variety o f networ k media types (b ased on you r order) . The line cards are installed i n slots 0 through 11 in the upper card cage and interface to each other and to the RP through the switch fabric (cards in the lo wer car d cag e). Vertical cable-management brackets attach to each line card to manage and organize the network interface cables.

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Alarm Card

Physical and Functional Overviews

Line cards installed in the Cisco 12012 suppo rt online inser tion and remo va l (OIR), which means you can remove and replace a line card while the Cisco 12012 remains power ed u p.

Caution To ensure adequate airflow through the upper card cage, empty card slots must

have a card blank installed.

Note Detailed instructions for removing, replacing, and configuring the line cards

supported by the Ci sco 12012 are contained in the configurati on note for the indi vidual line card.

The alarm card occupies a special slot (rightmost slot) in the upper card cage. The slot is labeled Alarm card, is physically narrower, and has a different backplane connector than the rest of slots in the upper card cage.

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Physical and Functional Overviews

The alarm card has three primary functions:

• Provides a visual display of three severity levels of alarms (critical, major, and minor)

detected by the system through the MBus. The alarms can warn of an overtemp erature condition on a component in the card cage assembly, a fan failure in a blower module, an overcurrent condition in a p ower supply, or an out-of-tolerance voltage on one of the cards in the upper or lower card cage. The threshold levels for triggering the different stages of alarms are set by software.

The RP continuously polls the system for temperature, voltage, current, and fan speed values. If a threshold value is detected, the RP sets the appropriate severity level of alarm on the alarm card lighting one of three pairs of LEDs and energizing the appropriate alarm card relays activating any external audible or visual alarms.

• Provides a connection point for the system to connect to two site-w ide external alarm

systems. Two redundant, 25-pin D-sub connectors on the alarm card faceplate are tied directly to the critical, major, and minor alarm relay normally open, normally closed, and common contacts. Only safety extra-low v oltage (SEL V) external alarm circuits can be attached to the two alarm card connectors. The external alarm can be visual or audible. Audible external alarms can be reset by the reset switch on the alarm card faceplate. Visual alarms are reset by software.

• Provides visual status of the clock and scheduler card s and the switch f abric cards. Fi ve

pairs of LEDs (one pair for each slot in the lower card cage) provide a visual status of the switch fabric.

The alarm card faceplate con tains the follo wing connector s and indicators (s ee Figure 1-6):

• Critical/Major/Minor LEDs—Three pairs of LEDs; two pairs are red, and one pair is

amber. The LEDs are driven by MBus software. The LEDs give a visual indication of critical, major, and minor alarms detected by the system. The LEDs are paired for redundancy.

• Audible alarm cutoff switch—A switch used to turn off an external audible alarm. It

does not affect any visual (LED) alarms set on the alarm card. The audible alarm remains activated until the alarm condition is cleared or this button is pressed.

• Alarm 1 and alarm 2 connectors—Two, 25-pin D-sub connectors. The alarm card relay

contacts are tied to these two connectors. You can attach visual and audible alarm circuits to the alarm 1and alarm 2 connectors.

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Physical and Functional Overviews

Note Only safety extra-low voltage (SELV) circuits can be connected to the alarm 1 and

alarm 2 connectors. Maximum rating for the alarm circuit is 2 amps, 50 volt-amp.

• CSC/SFC LEDs —Five pairs of LEDs (one pair for each slot in the lower card cage)

showing clock and sched uler card status and switch fab ric card status. A gr een enabled LED indicates that the card in that slot has been detected by the system. A red fail LED indicates that the system has detected a fault in the card in that slot.

Figure 1-6 Alarm Card Faceplate LEDs, Switches, and Connectors

Switch Fabr ic

The heart of the Cisco 12012 is the swi tch fabric circuity, which provides synchronized gigabit speed interconnections for the line cards and the RP. The switch fabric circuitry is contained on two types of cards, a clock and sched uler card and a switch fabric card, which install in the fiv e slots in the lower card cage. (See Figure 1-7.) A clock and scheduler card is installed in either slot 0 or slot 1 (CSC 0 or CSC 1) in the lower card cage; a switch fabric card is install ed in slot 2, slot 3, or slot 4 (S FC 1 , S F C 2, or SFC 3) in the lower card cage.

MAJOR

CRITICAL

Critical, major, and

minor alarm LEDs

MINOR

MAJOR

CRITICAL

Audio alarm

cutoff switch

MINOR

ACO/LT

Pin 25

Pin 1

Pin 25

CSC

FAIL

ENABLED

SFC

Pin 1

ALARM 2ALARM 1

FAIL

ENABLED

CSC

SFC

ALARM

Clock and scheduler card

and switch fabric card LEDs

H10900

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Physical and Functional Overviews

GIGABIT ROUTE PROCESSOR

Q OC-3/STM-POS

OC-12/STM-4 ATM

OC-12/STM-4 POS

ALARM

1 0 1 2

A system must hav e a one clock and scheduler card installed to operate. Both types of cards have a s witching capaci ty of 15 Gbps . You can add switching capacity (up t o 60 Gbps) an d redundancy b y increasing the number of switch cards (to a maximu m of fi ve cards) installed in your system.

Figure 1-7 Lower Card Cage

Lower card cage slot 0

Lower card cage slot 4

H11017

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Physical and Functional Overviews

Each clock and scheduler card or switch fabric card provides OC-12/STM-4 (622 Mbps) switching bandwidth for the system. By adding three m ore cards in the lo wer card cag e, the bandwidth is increased to OC-48/STM-16 (2.4 Gbps). Table 1-5 lists the switch fabric bandwidth and the card configurations needed to support the bandwidth.

Table 1-5 Switch Fabric Configurations

Clock and Scheduler

Switch Fabric Bandwidth

OC-12/STM-4 1 OC-12/STM-4 redundant 2 0 OC-48/STM-16 1 3 OC-48/STM-16 redundant 2 3

1. One clock and scheduler card must be i nsta lle d in a syste m.

Card

Switch Fabric Card

A minimally configured system has one clock and scheduler card installed. This configuration provides an OC-12/STM-4 bandwidth, but no switch fabric, clock, or scheduler redundancy. Adding a second clock and scheduler card provides fabric, clock, and scheduler redun dancy, b ut no increase in bandwidth. Adding three s witch fabric cards to a system with a single clock and scheduler card increases the system bandwidth to OC-48/STM-16, but no clock or scheduler redundancy. Adding a second clock and scheduler card to the system gives you OC-48/STM-16 bandwidth plus fabric, clock, and scheduler redundancy.

The clock and scheduler card contains the following functionality:

• System clock—Sent to all line cards, RP, and switch fabric cards. The system clock

synchronizes data transfers between line cards or line cards and the RP through the switch fabric. In systems with redundant clock and scheduler cards, the two system clocks are synchronized so that if one system clock fails, the other clock takes over.

• Scheduler—Handles requests from the line car ds fo r acces s 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.

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Physical and Functional Overviews

• Switch fabric—Circuitry that carries the user traffic between line cards or between the

RP and a line card. The switch fabric on the clock and scheduler card is identical to the switch fabric on the switch fabric card.

The switch fabric card contains only the switch fabric circuitry, which carries user traffic between line cards or between the RP and the line cards. The switch fabric card receives scheduling information and the system clock from the clock and scheduler card. The switch card is keyed to occupy slots 2, 3, and 4 (lower three slots) in the lower card cage. A minimally confi gured Cisco 12012 does not require a switch fabric card; however, to maximize the bandwidth and switching capacity of the Cisco 12012, three switch fabric cards must be installed.

Status of the cards in the lower card cage is displayed by five pairs of LEDs (one pair for each card slot) on the alarm card in the upper card cage. Each pair of LEDs includes a green enable LED, which indicates the clock and scheduler card (CSC) or switch fabric card (SFC) is installed and operational, and a red fail LED, which indicates a fault has been detected on the card installed in that slot.

Power Supplies

The power supp ly bay, located at the bottom of the card cage as sembly, can accommodate up to four AC-input power supplies or two dual-width DC-input power supplies.

Caution Do not mix power supplies in the Cisco 12012. In multiple power supply system

configurat ions, all po wer supp lies must be of the same type (four AC-inpu t po wer supplies or two DC-input power supplies).

Note Detailed instructions for handling and replacing the Cisco 12012 power su pplies are

contained in the configuration notes Cisco 12012 Gigabit Switch Router AC-Input Power Supply Replacement Instruct ions (Document Number 78-4334-xx) and Cisco 12012 Gigabit Switch Router DC-Input power Supply Replacement Instructions (Document

Number 78-4330-xx). The appr opriate configuration note accompanies each AC-input or DC-input power supply that is shipped from the factory as a FRU.

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AC-Input Power Supply

The AC-input power supply is a modular unit that measures 10 inches (25.4 cm) by 3.8 inches (9.6 cm) wide by 15 inches (38 cm) deep and weighs 18 lb (8.2 kg). (See Figure 1-8.) The Cisco 12012 requires two AC-input power supplies to operate. Installing one or two additional A C-input po wer suppli es provides po wer suppl y redundancy and current sharing capability.

Warning AC operation requires a minimum configuration of two AC-input power

supplies.

An AC-i nput power supply has the following features:

• A power factor corrector (PFC). Allo ws the power s upply to accept source A C v oltages

from 180 to 264 VAC, single phas e, 47 to 63 Hz. Each A C-input po wer sup ply requires a dedicated 20A service, North America; 10A or 16A, International.

Physical and Functional Overviews

• A handle. Provides a grip point for removing and replacing the power supply.

• A captive screw at the bottom of the faceplate. Secures the power supply in the power

supply bay.

• A power supply power cord appliance coupler . The main d isconnect for the system. The

power supp l y p ower switch engages a latch that s ecur e s th e power supply in the po we r supply bay.

• Two LEDs on the power su pply faceplate. Indicate the following:

— A green AC OK LED indicates that the source AC voltage is within the operational

range of 200 to 264 VAC. The LED is on any time th e power supply i s connected to source A C and the po wer supply po wer switch i s on. If the LED is off, a problem might be indicated.

— A red output fail LED indicates that one or both of t he power supply output v oltages

(+5 and –48 VDC) is out of tolerance. The LED flashes on and off for fi v e seconds as a test of the LED when you first turn on the power supply.

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Physical and Functional Overviews

• An AC power cord receptacle, located to the left of the hand le. A modular 14-ft (4.3-m)

power cable connects the AC-input power supply to the site AC power source. AC power cords with different source AC power plugs are available. A spring clip secures the power cable to the AC -i nput power supply.

Connect each AC-input power supply to a separate AC power source.

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

against power loss.

Figure 1-8 AC-Input Power Supply

Spring clip

Handle

AC OK LED

Output fail LED

Captive screw

DC-Input power Supply

The DC-input power supply is a modular unit that measures 10 inches high (25.4 cm),

7.84 inches (19.9 cm) wide (twice as wide as the AC-input power supply), 15 inches

(38.1 cm) deep, and weighs 19 lb (8.6 kg). The Cisco 12012 requires one DC-input po wer supply. Adding a second DC-input power supply provides redundancy.

AC receptacle

Z 2

H10484

Power switch

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Physical and Functional Overviews

The DC-input power supply has the following features (see Figure 1-9):

• Operates from a DC source voltage of –40.5 to –75 VDC and requires a dedicated 60A

service.

• A handle. Provides a grip point for removing and replacing the power supply.

• A captive jackscrew. Seats and unseats the power supply in the backplane power supply

connector and secures the power supply to the power supply bay.

• A power switch. Turns the power supply on and off and controls a latch that secures the

power supply in the power supply bay. Turning the power switch on (|) engages the latch; turning the power switch off (O) releases the latch.

• Two LEDs on the power supply faceplate. The LEDs indicate the following:

— A green input OK LED indicates that the source DC voltage is within the

operational range of –40.5 to –75 VDC. The LED is on anytime the power supply is connected to source DC and the power supply power switch is on.

— A red output fail LED indicates that one or both of t he power supply output v oltages

(+5 and –48 VDC) is out of tolerance. The LED will flash on and off for five seconds as a test of the LED when the power supply is first turned on.

• Six threaded terminals—two each for negative (source DC), positive (source DC

return), and ground. A hardwired source DC power cable is required from the site DC power source to the DC-input power supply. The DC power cable leads should be 4 American Wi ring Gauge (AWG) high strand count wire. The lugs for connecting po wer cable leads to the power supply should be dual-hole, M6 terminal lugs with .625-inch (15.86-mm) centers.

• An external circuit breaker alarm. Indicates when a DC-input power supply circui t

breaker has tripped. A terminal block with three connectors is mounted on the left side of the power supply for this external alarm.

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Physical and Functional Overviews

Figure 1-9 DC-Input Power Supply

Source DC terminals

Circuit breaker

alarm terminal

Power switch

Caution

or a power supply blank must be installed in each power supply bay.

Power Distribution

The backplane distributes power in the Cisco 12012 through the backplane to all cards in the upper and lower card cages and to the two blow er modules through two harnesses. (See Figure 1-10.) The power supplies convert either source AC or source DC into +5 VDC and

-48 VDC. The +5 VDC goes directly to each card to power the MBus module. The –48 VDC feeds a DC-DC converter also on each card. The MBus module contro ls the DC-DC con verter. When directed by the RP o r by MBus sof tware, the MBus mod ule turns on the DC-DC converter ; the –48 VDC is converted into +3.3 VDC and +5 VDC for use by the card.

block

Handle

Captive jackscrew

To ensure adequate airflow across the router’s power supplies, a power supply

H10485

Input OK LED

Output fail LED

DC power

cable bracket

Power for the blower modules is supplied directly from the backplane through two harnesses mounted on the frame. An internal blower module controller card converts –48 VDC into a variable DC voltage which powers the blower module fan s. An increase in the system ambient air temperature increases the v oltage to the f ans, increasing their speed.

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Figure 1-10 Cisco 12012 Power Distribution

Blower module

Controller card

MBus module

Controller card

MBus module

–48

VDC

–48

VDC

–48

VDC

Physical and Functional Overviews

+5 VDCDC/DC

VDC

conv.

MBus module

conv.

MBus module

DC/DC conv.

+3.3 VDC

GRP

+5 VDCDC/DC +3.3 VDC

Line card

+3.3 VDC

185–264 V AC –48/–60 VDC

AC-input or DC-input power supply

MBus module

Switch fabric card

–48

VDC

+5 VDC

Backplane

Alarm card

–48 VDC

+5 VDC

H10506

Minimum 2 AC-input power supplies or 1 DC-input power supply Maximum 4 AC-input power supplies or 2 DC-input power supply

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Physical and Functional Overviews

Blower Module

The Cisco 12012 has two blower modules; one is located above the upper card cage, and the second is located below the power supply bay. (See Figure 1-1.) The two blower modules maintain acceptable operating temperatures for the internal components by drawing cooling air through both card cages and the power supply bay.

The blower module is a sheet metal enclosure containing three fans, a fan controller card, and two faceplate LEDs. (See Figure 1-11.) The top and bottom blower modules are identical and are interchangeable. Both blower modules have snap-on plastic front covers mounted over the blo wer module faceplates. Two blower module LEDs are visible through the front covers.

Figure 1-11 Blower Module (Shown without the Blower Module Front Cover)

Snap fasteners

(4 places)

Blower module

LEDs

H10486

Captive screws

The blower modules draw room air in through an air filter on the front of the lower card cage (See Figure 1-12). The top blower module draws the air up through the upper card cage and out through exhaust vents on the back of the blower module; the bottom blower module draws the air down through the lower card cage and power supply bay and out through exhaust vents on the back of the blower module.

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Physical and Functional Overviews

The front and back of the Cisco 12012 must remain unobst ructed to ensure adequate air flow and prevent overheating inside the card cage assembly; we recommend at least 6 inches (15.2 cm) of clearance.

Figure 1-12 Internal Air Flow (Side View)

Top blower module

Air filter

Room air

Air exhaust

Upper card cage

Air deflector Lower card cage

Power supply bay

Bottom blower module

Front Rear

Air exhaust

H10487

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Physical and Functional Overviews

A blower module controller card in the blower module monitor s and controls the operation of the three variable-speed fans. The variable-speed feature enables quieter operation by allowing the blower modules to operate at less than maximum speed when doing so provides adequate cool ing to maintain an acceptable oper ating temperature inside the car d cage assembly.

T emperature sensors (tw o per card) monitor the internal air temperature. When the ambient air temperature is within normal operating range, the fans operate at their lowest speed, which is 55 percent of the maximum speed.

If the air temperature inside the card cage assembly rises, fan speed increases to provide additional cooling air to the internal components. If the internal air temperatures continue to rise beyond the specified threshold, 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. In addition, the two remaining fans go to full speed to compensate for the loss of the one fan. If another fan fails, the system shut downs to prevent equipment damage.

A handle on the b l ower module provides a g rip p oi nt f or removing and replacing a blower module. (See Figur e 1-11.) Two LEDs (one green and one red), vis ible t hroug h the blower module front cover, provide blower module status. The green LED, when on, indi cates all three fans are operating normally . The red LED should remain off during no rmal operation. If the red LED is on, a fa n failure or other f ault has been detected in the blo wer module. The fault can be one or more stopped fans or one or more fans running below speed, or the controller card has a fault.

Note The configuration note Cisco 12012 Gigabit Switch Router Blower Module

Replacement Instructions (Document Number 78-4335-xx) contains detailed instructions

for removing and replacing a blower module. This configuration note accompanies every blower module that is shipped from the factory as a FRU.

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Air Filter

The Cisco 12012 is equipped with a serviceable air filter mounted in a hinged tray located in front of the lower card cage. Do not run the Cisco 12012 without an air filter installed. Y ou s hould inspect and clean the air filter once a month ( more often in dusty en vironments). Procedures for vacuuming and replacing the air f ilter are contained in the section “Cleaning and Replacing the Air Filter Assembly” in the chapter “Maintaining the Cisco 12012.”

Cable-Management System

The Cisco 12012 cable-management system organizes the interface cables entering and exiting the system, keeping them free of sharp bends (excessive bending in an interface cable can cause performance degradation) and out of the way. The Cisco 12012 cable-management system consists of two components: a horizontal cable-management tray attached to the frame above the upper card cage, and vertical cable-management brackets, one bracket per line card. (See Figure 1-13.)

Physical and Functional Overviews

The horizontal cable-management tray keeps all of the interface cables organized as the cables enter the Cisco 12012 from either the left or right side, and directs them down through the bottom of the tray to the individual line cards.

A vertical cable-management bracket attaches to each line card with two captive screws. Rubber clips on the bracket ho ld the interface cables in place, keeping the cab les organized. On line cards with multiple ports, the vertical cable-management bracket keeps the interface cables organized when yo u remo v e and replace the line card. You can unplug the interface cables from the line card and keep cables clipped in the vertical cable-management bracket while you remove the bracket from the line card. Then, when you replace the line card, the interface cables are already broken out to the correct line card interface connectors.

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Physical and Functional Overviews

Figure 1-13 Cable-Management System

Horizontal cable-management tray

Captive screw

A U

C O

S O

GIGABIT ROUTE PROCESSOR

A C

C O

L R X

R J

A C

Q OC-3/STM-POS

OC-12/STM-4 ATM

OC-12/STM-4 POS

T M M

ALARM

L A J

R I

N O

O /

ALARM 1 ALARM 2

N A

0 1

S F

Captive screw

Vertical cable-management bracket

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Line card

H10733

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Maintenance Bus

The Cisco 12012 maintenance bus (MBus) and MBus modules manage all of the maintenance functions of the system.

The Cisco 12012 MBus consists of two se parate busses (providing MBu s redundancy) that link all of the line cards, the RP, the switch fabric cards, the power supplies, and the blo wer modules. Each component contains an MBus module that allows the component to communicate over the MBus. The MBus module on each component is powered by +5 VDC directly from the power supply. The MBus modules perform the following functions:

• Power-up/down co ntrol—Each MBus module directly controls the DC-DC converters

on the component it is mounted on based on commands it receives from its on-board EPROM and from the master RP. Each MBus module is tied directly to +5 VDC from the power supply. When power is applied to the Cisco 12012, all MBus modules immediately power up. The MBus modules on the RP or clock and scheduler card immediately turn on the DC-DC converter, powering up the respective card. The line card MBus module waits to power up the line card until it recei ves a command from the master RP.

Physical and Functional Overviews

• Device discovery—The RP can determine the system configuration using the MBus. A

message is sent from the RP over the MBus requesting all installed devices to identify themselves. The response back provides slot number and card and component type.

• Code download—A portion of the line card operating softw are can be do wnloaded from

the RP to the line card over the MB us. Because the MBus is relatively slow compared to the switch fabric, only enough co de is do wnloaded to the line card for it to access the switch fabric and complete the download process.

• Diagnostics—The diagnostic software image is downloaded from the RP to the card

under test.

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System Specifications

• Environmental monitoring and alarms—The MBus module on each component

monitors that component’s environment as follows:

— Line cards and the RP are monitored for temperature by two temperature sensors

mounted on each card. The MBus module makes voltage adjustments through software for the +3.3- and +5-VDC 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 +3.3- and +5-VDC DC-DC converters

— Environmental monitoring includes voltage monitoring, temperature monitoring

from two temperature sen sors, and rotational speed sensing f or each blower module fan.

System Specifications

This section lists the Cisco 12012 specifications. The specifications are listed in three tables: Table 1-6 lists the physical specifications, Table 1-7 lists the electrical specifications, and Table 1-8 lists the environmental specifications.

Table 1-6 Cisco 12012 Physical Specific ations Description Value

Frame height 57 inches (144.8 cm) Frame width 17.4 inches (44.2 cm)

19.375 inches (49.2 cm) including flanges Frame depth 21 inches (53.3 cm) including cable- management system Weight:

Maximum configuration Minimum configuration Shipping

380 lb (172.4 kg) 250 lb (113.6 kg) 460 lb (208.6 kg)

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Table 1-7 Cisco 12012 Electrical Specifications Description Value

AC-in p ut power 1560 watts AC-input voltage 200–240 VAC nominal (single-phase) AC-input current ra ting 9.5 amps (@ 200 VAC) DC-input po we r 3000 watts DC-input voltage –48 VDC nominal in North America

–60 VDC nominal in the European Community

DC-input current rating 55 amps (A) @ 50 VDC

Table 1-8 Cisco 12012 Environmental Specifications Description Value

System Specifications

Temperature 32° to 104°F (0 to 40°C) operating

–4° to 149°F (–20 to 65°C) nonoperating

Humidity 10 to 90% noncondensing operating

5 to 95% noncon densing nonoperating

Altitude 0 to 10,000 ft (0 to 3,050 m) operating

0 to 30,000 ft (0 to 9,144 m) nonoperating Heat dissipation 10,640 Btu/hr maximum Acoustic Noise 69 dbA maximum Shock 5 to 500 Hz, 0.5g

(0.1 oct./min.2) operating 5 to 100 Hz, 1g (0 .1 oct./min.) nonoperating 100 to 500 Hz, 1.5g (0.2 oct./min.) 500 to 1,000 Hz, 1. 5g (0.2 oct./min.)

1. g = gravity.

2. oct./min . = octave per minute.

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Agency Approvals

In addition to meeting GR-63-CORE and GR-1 089-CORE specifica tions, the Cisco 12012 meets the agency approvals for safety, EMI, and immunity listed in Table 1-9.

Table 1-9 Agency Approvals Category Agency Approval

Safety UL 1950

EMI FCC Class A

CSA 22.2 No. 950

EN60950 AUS TEL TS001 AS/NZS 3260

CSA Class A EN55022 Class A VCCI Class 1 AS/NRZ 3548 Class A

Immunity EN61000-4-2/IEC-1000-4-2

EN61000-4-3/IEC-1000-4-3 EN61000-4-4/IEC-1000-4-4 EN61000-4-5/IEC-1000-4-5 EN61000-4-6/IEC-1000-4-6 EN61000-4-11/IEC-1000-4-11

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CHAPTER

Preparing for Installation

This chapter provides specific information about preparing your site for the Cisco 12012. Included are safety guidelines, specific preparatory information, and tools and parts required to assure a successful installation of your Cisco 12012.

The shipping package for Cisco 12000 series routers is engineered to reduce the potential of product damage associated with r outine material handling e xperienced du ring shipmen t. To minimize potential damage to the product, transport these products in their Cisco-specified packagings. Failure to do so may result in damage to the router or degradation of its performance. Also, do not remove the GSR or 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 where you will install it.

Use the unpacking documentation included with the router when you unpack the Cisco 12012. Inspect all items for shipping damage. If anything is damaged, immediately contact a customer service representative.

Sections in this chapter include the following:

• Safety Recommenda tions

• Site Requirement Guidelines

• Tools for Installation

• Unpacking the Cisco 12012

• Site Log

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Safety Recommendations

Before installing your Cisco 12012, you should consider power and cabling requirements that must be in place at your installation site, the equipment you will need to install th e router, and the environmental conditions yo ur in stallation site must meet to maintain normal operation. This chapte r guides you through the proces s of preparing for your rout er installation.

Safety Recommendations

The following guidelines will help to ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations, so be alert.

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

• Always disconnect t he pow er source and unplug all p ower cabl es before w orking on the

router.

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

• Keep tools and router components away from walk areas.

• 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.

• The Cisco 12012 operates safely when it is used in accordance with its marked electrical

ratings and product usage instructions.

• Do not work alone if potentially hazardous conditions exist.

• The installation of your Cisco 12012 should be in compliance with nation a l 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.

• Review the safety warnings listed in the document Regulatory Compliance and Safety

Information for the Cisco 12012 Gigabit Switch Router (Document Number

78-4347-xx) that accompanied your Cisco 12012 before installing, configuring, or maintaining the router.

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Safety Recommendations

• Cisco 12012 routers with AC-input power su pplies are shipped with a three-wire

electrical grounding-type plug that will only fit into a grounding-type power outlet. This is a safety feature. The equipment grounding should be in accordance with local and national electrical codes.

• Cisco 12012 routers configu red with DC-input po wer supplies requi re a 60-ampere DC

circuit breaker for the input 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 UL950, CSA 950, EN 60950, and IEC950 can be connected to a Cisco 12012 DC-input power supply.

• A Cisco 12012 configured with DC-input power supplies is to be in stalled 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 12012 configu red with DC-input power s upplies shall have a readily accessible

disconnect device incorporated in the fixed wiring.

Lifting Guidelines

A fully confi gured Cisco 12 012 weighs appr oximately 380 lb (172 kg); i t is not intend ed to be moved fr equently . Before you install the router, ensure that your site is properly prepared so you can avo id having to mo ve the Cisco 12012 later to accommodate power sources and network connections.

Whenever you lift any heavy assembly, follow these guidelines:

• Have a second person available to help lift the assembly; avoid lifting the assembly

alone.

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

• Lift the assembly slowly; never move suddenly or twist your body as you lift.

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Safety Recommendations

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

to lift the assembly, 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 Cisco 12012.

Caution To pre vent damage, nev er attempt to lift or tilt the Cisco 12012 using the handles

on the blower modul es or on the po wer supplies. Thes e handles are not designed to support the weight of the Cisco 12012.

Safety with Electricity

The line cards, redundant clock and scheduler cards, switch fabric cards , alarm card, blower modules, and redundant power supplies can be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system.

Follow these basic guidelines when working with any electrical equipment:

• Before beginning any procedures requiring access to the interior of the Cisco 12012,

locate the emergency power-off switch for the room in which you are working.

• If an electrical accident occurs, proceed as follows:

— Use caution; do not become a victim yourself. Disconnect power to the system. — If possible, send an other person to get medical aid; oth erwi se, asses s t he con dit ion

of the victim and then call for help.

— Determine if the person needs rescue breathing or external cardiac compressions,

then take appropriate action.

• Disconnect all power and external cables before installing or removing a router.

• Never assume that power has been disconnected from a circuit; always check.

• Do not perform any action that creates a potential hazard to people or makes the

equipment unsafe.

• Never install equipment that appears damaged.

• Carefully examine your work area for possible hazards such as moist floors,

ungrounded power extension cables, and missing safety grounds.

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In addition, use the guidelines that follow when working with any equipment that is disconnected from a power source, but still connected to telephone or network wiring:

• Never install telephone wiring during a lightning storm.

• Never install telephone jacks in wet locations unless the jack is specifically designed for

wet locations.

• Never touch uninsulated telephone wires or terminals unless the telephone line has been

disconnected at the network interface.

• Use caution when installing or modifying telephone lines.

Preventing Electrostatic Discharge Damage

Many router componen ts are sensitiv e to damage from static electricity. Some components can be degraded by voltages as low as 30V. Conversely, static voltages as high as 35,000V can be generated just by handling plastic or foam packing material, or b y sli ding assemblies across plastic and carpets. Not exercising the proper electrostatic discharge (ESD) precautions can result in intermittent or complete componen t f ailures. To minimize the potential for ESD damage, observe the following guidelines:

Safety Recommendations

• Always use an ESD wrist strap or ankle strap and ensure that it makes good skin contact.

• When handling a removed line card, switch f abric card, or RP, make sure the equipment

end of your ESD strap is attached to one of the two upper card cage ESD connection sockets or to bare metal on the frame. A void contact between the card and your clothing. The wrist strap only protects the card from ESD v oltages on the body; EDS v oltages o n the clothing can still cause component damage.

• Always place a card component-side up on an antistatic surface, in an antistatic card

rack, or in a static shielding bag. If you are returning the item to the factory , immediately place it in a static shielding bag.

• When installing a line card or RP, use the ejector levers to properly seat the card

connectors in the backplane, then tigh ten both captive screws. These screws prevent accidental remov al, provide proper grounding for the system, an d help to ensure that the card connector is seated in the backplane.

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Site Requirement Guidelines

• When removing line cards, clock and scheduler cards, switch f abric cards, or an RP, use

the ejector levers to unseat the card connector from the backplane. Pull the metal card carrier out slowly, placing one hand along the bottom of the carrier to guide it straight out of the slot.

• Handle line cards, clock and scheduler cards, switch fabric cards or an RP b y the metal

card carrier edges only; avoid touching the board or any connector pins.

Caution For safety, periodically check the resistance value of the antistatic strap. The

measurement should be between 1 and 10 megohms.

Laser Safety

Single-mode style line cards for the Cisco 12012 are equipped with lasers, which emit invisible radiation. Do not stare into open line card ports. Observe the following warning to prevent eye injury.

Warning Because invisible laser radiation may be emitted from the aperture of the port

when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

Site Requirement Guidelines

This section provides the following site requirement guidelines that you must consider before installing the Cisco 12012:

• Rack-mounting guidelines

• Airflow guidelines

• Temperature and humidity guidelines

• Power guidelines

• Site wiring guidelines

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Rack-Mounting Guidelines

Before installing the Cisco 12012 in telco-style or 19-inch equipment racks, consider the following gener a l rack-moun t ing guideli nes:

• Install the frame in an enclosed rack only if the rack has adequate ventilation or an

exhaust fan; use an open rack when possible.

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

by creating negati ve air pressure arou nd the frame 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.

• Equipment located near the bottom of the rack can generate e xcessiv e heat that is dra wn

upward and into the intake ports of equipment above, leading to failures in the router. If the enclosed rack you are using does not ha ve a v entilation fan, on e should be installed.

The rack-mounting hardware included with the Cisco 12012 is suitable for most 19-inch equipment racks or telco-style racks. W e strong ly recommend a rack-mount installation for the Cisco 12012 because of size and weight considerations.

Site Requirement Guidelines

Following are s pecific rack-mounting guidelines for the Cisco 12012:

• The Cisco 12012 weighs approximately 380 lb (172 kg) fully configured. To keep the

equipment rack center of g ravity as low as possible, mount the r outer so th at the bottom of the router frame is no higher than 10-inches (25.4-cm) from the floor.

• If you use telco-style racks, be sure that the rack is bolted to floor. The frame mounts to

the two rack posts, and the rest of the frame is cantile v ered of f of the posts. Ensure that the weight of the Cisco 12012 does not make the r ack u nstable. Som e telco-s t yle r acks are also secured to ceiling brack ets, if necessary , because of th e weight of the equipment in the rack. Make sure that the rack you are installing the Cisco 12012 in is secured to the building structure.

• The height of the Cisco 12012 frame is 57-inches (144.8-cm). Allo w suffi cient space in

the rack for the frame.

• T o moun t the ro uter b etween two po sts or r ails, th e inner clearance ( t he width b etween

the inner sides of the two posts or rails) must be at least 17.5-inches (44.5-cm).

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Site Requirement Guidelines

• Maintain at least a 6-inch (15.25-cm) clearance at the front and back of the router frame

for cooling air intake and warm air exhaust. Avoid placing the router in an overly congested rack because the heated exhaust air from oth er equipment can enter the inlet air vents and cause an overtemperature condition inside the router.

• Allow at least 19 inches (48-cm) of clearance at the front of the rack for maintenance.

• Install and use the cable-management bracket included with the router to keep cables

organized and out of the way of line cards, power supplies, and the blower modules. Consider the equipment and cabling that is already install ed in the rack. Ensure that cables from other equipment will not impair access to the upper or lower card cage, or require you to disconnect cables unnecessarily to perform equipment maintenance or upgrades.

• When mounting the router in a four-post or telco-style rack, be sure to use all of the

screws prov ided to secure the frame to the rack posts.

Figure 2-1 shows the outer dimensions of the Cisco 12012 frame.

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Site Requirement Guidelines

Figure 2-1 Cisco 12012 Frame Outer Dimensions (Top View)

24 inches required for

component removal

Vertical mounting rail (rack mounting surface)

19.375 inches

Front Rear

inches

17.4

inches

H10404

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Site Requirement Guidelines

Airflow Guidelines

The Cisco 12012 air circulation system consists of two blower modules: one mou nted at the top of the frame (above the upper card cage) and the other mounted at the bottom of the frame (below the power supply bay). The blo w er mod ules maintain acceptable operating temperatures for the internal components by drawing cooling air in through a replaceable air filter and circulating the air through both card cages and the power supply bays.

Observe the following guidelines when selecting a site to install the Cisco 1 201 2:

• The site should be as dust-free as possibl e . Dusty environments can clog the air filter,

reducing the cooling airflow through the system. This can cause an overtemperature condition in the system.

• Allow sufficient airflow by maintaining a minimum of 6 inches (1 5.2 -cm) of clearan ce

at both the inlet and exhaust openings on the frame. If the airflow is blocked or restricted, or if the inlet air is too warm, an over temperature condition within the router can occur. Under extreme conditions, the environmental monitoring system will shut down the power to protect the system components.

Temperature and Humidity Guidelines

T able 2-1 lists the operatin g and nonoperating en vironmenta l site requirements. The rang es listed are those within which the Cisco 12012 will continue to operate; however, a temperature measurement that is app roaching a minimum or maximum indicates a potential problem. You can maintain normal operation by anticipating and correcting en vironmental anomalies before they approach critical values.

The environmental monitoring functionality built into the Cisco 12012 protects the system and components from potential damage from overvoltage and overtemperature conditions. To assure normal operation and avoid unplanned maintenance, pl an and prepare your site before you install the router.

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Site Requirement Guidelines

Table 2-1 Site Environment Requirements Specifications Minimum Maximum

Ambient temperature, operating 32°F (0°C) 104°F ( 4 0°C) Ambient, temperature, nonoperating

and storage Ambient humidity, (noncondensing)

operating Ambient humidity, (noncondensing)

nonoperatin g and storage Altitude, operating and nonoperating Sea level 10,000 ft (3,050 m) Thermal output – 10,640 Btu/hour

Vibration, operating 5 to 200 Hz, 0.5 g

Vibration, nonoperating 5 to 200 Hz, 1 g (1 oc t/min)

1. g = gravity.

2. oct/min. = octave per minute.

Power Guidelines

–40°F (–40°C) 149°F (65°C)

10% relative 90% relative

5% relative 95% relative

(maximum)

(1 oct/min)

200 to 500 Hz, 2 g (1 oc t/min)

–

The Cisco 12012 can be configur ed with either AC-input or DC-input po wer suppl ies. The Cisco 12012 requires two AC-input power supplies or one DC-input power supply to operate. Site requirements differ depen ding on the type of source v o ltage. We recommend you follow these precautions and recommendations when planning power connections to the Cisco 12012:

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

ensure that you are receiving clean power. Install a power conditioner if necess ary.

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

Warning AC operation requires a minimum configuration of two AC-input power

supplies.

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Site Requirement Guidelines

AC-Powered Systems

In sites where the Cisco 12012 operates with AC-input power supplies, observe the followi ng guidel i n es:

• The AC-input po wer supply operating between 185–264 VAC requires a minimum of

20-amp service, North America; 10-amp or 16-amp, International.

• There are five st yles of A C-i nput po wer sup ply po wer cords a v ailable (differing in plug

type); make sur e you hav e the correct style for your site. (See Fi gure 2-2 and T able 2-3.) All AC-input p owe r supply p owe r cords measure 14 feet (4.3 m).

• Provide dedicated power sources for each power supply installed in the router.

• Install an uninterruptible power source where possible.

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

Table 2-2 lists the nominal and acceptable value ranges for source AC power.

Table 2-2 Source AC Power Specifications Specifications Nominal Value Acceptable Value Ranges

AC input voltage 200 to 240 VAC AC input line frequency 50/60 Hz 47 to 63 Hz AC input current 9.5 amps (@ 200 VAC) –

1. VAC = volts alternating current.

180 to 264 VAC, single phase

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Figure 2-2 AC Power Cords

Site Requirement Guidelines

North American plug

L6-20 20A

Italian plug

CEI 23-16/VII 10A

Australian plug

AS 3112 10A

United Kingdom plug

BS 1363 13A

European plug

CEE 7/7 16A

Appliance coupler

Hot IEC 320 C-13 10A

Table 2-3 AC Power Cord International Options Label Description Product Number

North American 208 VAC, 60 Hz AC power cord CAB-GSR12-US= Australian 240 VAC, 50 Hz AC power cord CAB-GSR12-AU= European 230 VAC, 50 Hz AC power co rd CAB-GSR12-EU=

H10884

Italian 220 VAC, 50 Hz AC power cord CAB-GSR12-IT= United Kingdom 240 VAC, 50 Hz AC power cord CAB-GSR12-UK=

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Site Requirement Guidelines

DC-P owered Systems

In sites where the Cisco 12012 operat es with DC-input power supplies, observe the followi ng guidel i n es:

• Each DC-input power supply requires a dedicated 60-amp service. Table 2-4 lists the

nominal and acceptable value ranges for source DC power.

• For DC power cables, we recommend that you use 4-A WG, high strand cou nt wire cable

(three leads).

• Lugs should be dual hole and able to f it ov er M6 terminal st uds at .625-inch (1 5.86-mm)

centers. Figure 2-3 shows the type of lug required for the DC-input cable connections.

Table 2-4 Source DC Power Specifications Specifications Nominal Value Acceptable Value Ranges

DC input volt age –48 VDC1 (United States)

DC input current 50 amps (@ 50 VDC) –

1. VDC = volts direct current.

Figure 2-3 DC Power Cable Lug

End View

.55

Ø .267

2 holes

.25 .37.63

.08

–60 VDC (International)

2.25

Crimp area

–40.5 to –56 VDC (United States) –58 to –75 VDC (International)

All measurements in inches

4 AWG conductor

H10402

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System Grounding Connection Guidelines

Before you connect powe r or turn on your Cisco 12012, we strongly recommend that you provide adequate syst em g rou nd for you r router. System grounding (ear th) receptacles are provided on the Cisco 12012. The grounding receptacles are located between the air filter tray and the power s upply bay s, on the card cag e assembly mo unting flang e. To ensure the system grounding connection that you provide is adequate, you will need the following parts:

• Two grounding lugs—Must have two M6 screw holes that have 0.625–0.75-inch

(15.86–19.05-mm) spacing between them. The lug is similar to the type used for the DC-input po wer supply leads. (See Figure 2-3.) This grounding lug is not a vailable from Cisco Systems; electri cal-con nect or v e nd ors , su ch as Panduit, provide this type of lug.

• Four hex-head screws with locking washers—M6 (metric). These screws are no t

available from Cisco Systems; they are available from any commercial hardware vendor.

• T wo groun ding wire s—4 AWG recommended. The length of the wire depends on you r

router location and site environment. This wire is not available from Cisco Systems; it is available from any commercial cable vendor.

Site Requirement Guidelines

Site Wiring Guidelines

Following are guidelines for setting up the plant wiring and cabling at your site. When planning the location of the new system, consider the distance limitations for signaling, electromagnetic interference (EMI), and connector compatibility, as described in the following sections.

When wires are run for any sig nificant distance in an electromagnetic field, inter ference can occur between the field and the signals on the wires. This f act has two implications for the construction of plant wiring:

• Bad wiring practice can result in radio interference emanating from the plant wiring.

• Strong EMI, especially when it is caused by lightning or radio transmitters, can destr oy

the signal drivers and receivers in the Cisco 12012, and can even create an electrical hazard by conducting power surges through lines and into equipment.

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Site Requirement Guidelines

Note To predict and remedy stro ng EMI, you might also need to consult experts in radio

frequency 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.

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 uns hielded conductor s to dest roy electronic d e vices . If you ha ve had problems of this sort in the past, you may wan t to consul t e xperts i n electrical sur ge supp ression and shielding.

Most data centers cannot resolve the infrequent but potentially catastrophic problems just described without pulse meters and other sp ecial equipment. These problems can cost a great deal of time to identify and resolve, so take precautions by providing a properl y grounded and shielded environment, with special attention to issues of electrical surge suppression.

SONET Connection Guidelines

The SONET specification for fiber-optic transmission defines two types of fiber: single-mode and multimo de. Modes can be thought of as b undles of lig ht rays entering the fiber at a particular angle. Single-mode fiber allows only one mode of li ght to propagate through the fiber, while multimode fiber allows multiple modes of light to propagate through the fiber. B ecause multiple modes of light propagating through the fiber travel different distances depen ding on the entry angles , causing them to arri ve at the destination at different t imes (a phenom enon called modal d ispersion), s ingle-mode f iber is capable of higher bandwidth and greater cable run distances than multimode fiber. The maximum distances for single-mode and multimode transmissions, as defined by SONET, are listed in T able 2-5. If the distance between two connected stations is greater than these maximu m distances, significant signal loss can result, making transmission un reliable.

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Site Requirement Guidelines

Table 2-5 SONET Maximum Fiber-Optic Transmission Distances

Power Budget

Transceiver Type Maximum Distance between Stations

Single-mode Up to 9 miles (14.8 kilometers) Multimode Up to 1.5 miles (2.4 kilometers)

1. Table 2-5 gives typical results. You should use the power budget calculations to determine th e actual distances.

T o design an ef ficient optical data link, e v aluate the po wer bu dget. The po wer b udget is the amount of light available to overcome attenuation in the optical link and to ex ceed the minimum power that the receiver requires to operate within its specifications. Proper operation of an optical data link depends on modulated light reaching the receiver with enough power to be correctly demodulated.

Attenuation, caused by the passive media components (cables, cable splices, and connectors), is common to both multimode and single-mode transmissi on.

The following v ariables reduce the po wer of the signal (light) transmitted to the recei v er in multimode transmission:

• Chromatic dispersion (spreading of the signal in time becaus e of the dif ferent speeds of

light wavelengths)

• Modal dispersion (spreading of the signal in time because of the different propagation

modes in the fiber)

Attenuation is significantly lower for optical fiber than for other media. For multimode transmission, chromatic and modal dispers ion reduce the available power of the system by the combined dispersion penalty (in d ecibels [dB]). The po wer lost o ver the d ata link is the sum of the component, dispersion, and modal losses. Table 2-6 lists the factors of attenuation and dispersion limit for typical fiber-optic cable.

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Site Requirement Guidelines

Table 2-6 Typical Fiber-Optic Link Attenuation and Dispersion Limits

Single-Mode Multimode

Attenuation 0.5 dB 1.0 dB/km Dispersi on Limit No limit 500 MHz/km

1. The product of bandwidth and distance must be less than 500 MHzkm.

Approximating the Line Card Power Margin

The LED used for a multimode transmission light source creates multiple propagation paths of light, each with a different path length and time requirement to cross the optical fiber, causing signal dispersion (smear). Higher order mode loss (HOL) results from light from the LED entering the fiber and being radiated into the f iber cladding. A worst-case estimate of power margin (PM) for multimode transmissions assumes minimum transmitter p ower (PT), maximum link loss (LL), and minimum receiver sensitivity (PR). The worst-case analysis provides a margin of error, alth ough not all of the parts of an actual system will operate at the worst-case levels.

The power budget (PB) is the maximum possible amount of power transmitted. The following equation lists the calculation of the power budget:

PB = PT – PR PB = –18.5 dBm –(– 30 dBm) PB = 11.5 dB

The power margin calculation is derived from the po wer budget and subtracts the link loss, as follows:

PM = PB – LL If the power margin is positive, as a rule, the link will work. Table 2-7 lists the factors that contribute to link loss and the estimate of the link loss value

attributable to those factors.

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Site Requirement Guidelines

Table 2-7 Estimating Link Loss Link Loss Factor Estimate of Link Loss Value

Higher order mode losses 0.5 dB Clock recovery module 1 dB Modal and chromatic dispersion Dependent on fiber and wavelength used Connector 0.5 dB Splice 0.5 dB Fiber attenuation 1 dB/km

After calculating the power budget minus the data link loss, the result should be greater than zero. Results less than zero may have insufficient power to operate the receiver.

For SONET versions of a line card, the signal must meet the worst case parameters listed in Table 2-8.

Table 2-8 Line Card SONET Signal Requirements

Single-Mode Multimode

PT –18.5 –15 PR –30 –28 PB 11.5 13

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Site Requirement Guidelines

Multimode Power Budget Example with Sufficient Power for Transmission

The following is an example calculation for a multimode power budget b ased on the following variables:

Length of multimode link = 3 kilometers (km)

4 connectors

3 splices

Higher order loss (HOL)

Clock recovery module (CRM) Estimate the power budget as follows:

PB = 13 dB – 3 km (1.0 dB/km) – 4 (0.5 dB) – 3 (0.5 dB) – 0.5 dB (HOL) – 1 dB (CRM)

PB = 13 dB – 3 dB – 2 dB – 1.5 dB – 0.5 dB – 1 dB

PB = 5 dB The value of 5 dB indicates that this link would have sufficient power for transmission.

Multimode Power Budget Example of Dispersion Limit

Following is an example with the same parameters as the previous ex am ple, but with a multimode link distance of 4 km:

PB = 13 dB – 4 km (1.0 dB/km) – 4 (0.5 dB) – 3 (0.5 dB) – 0.5 dB (HOL) – 1 dB (CRM)

PB = 13 dB – 4 dB – 2 dB – 1.5 dB – 0.5 dB – 1 dB

PB = 4 dB The value of 4 dB indicates that this link would have sufficient power for transmission;

howe ver, due to the dispersion li mit on the li nk (4 km x 15 5.5 2 MH z > 500 MHzkm) , t his link would not work with multimode fiber. In this case, single-mode fiber would be the better choice.

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Single-Mode Transmission

The single-mode signal source is an injection laser diode. Singl e-mo de tran smission is useful for longer distances because there is a single transmission path within the fib er and smear does not occur. In addition, chromatic dispersion is also reduced becaus e laser light is essentially monochromatic.

The maximum overload specification on the single-mode receiver is –14 dBm. The single-mode receiver can be overloaded when using short lengths of fiber because the transmitter can transmit up to –8 dB. The receiver could be overloaded at –14 dB, but no damage will result. To prevent overloading the receiver connecting short fiber links, insert a 5 to 10 dB attenuator on the link between any single-mode SONET transmitter and the receiver.

SONET Single-Mode Power Budget Example

The followin g example o f a single-m ode po wer bu dget is of a two b uildings , 11 kilometers apart, connected through a patch panel in an intervening building with a total of 10 connectors.

Site Requirement Guidelines

Length of single-mode link = 11 km

10 connectors Estimate the power budget as follows:

PB = 11.5 dB – 11 km (0.5 dB /km) – 10 (0.5 dB)

PB = 11.5 dB – 5.5 dB – 5 dB

PB = 1 dB The value of 1 dB indicates that this link would have suf f icient power for transmission and

is not in excess of the maximum receiver input power.

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Tools for Installation

Using Statistics to Estimate the Power Budget

Statistical models more accurately determine the power b udget than the worst-case method. Determining the link loss with statistical methods requires accurate knowledge of variations in the data link components. Statistical power budget analysis is beyond the scope of this document. For further in formation, refer to UNI Forum specificat ions, ITU-T standards, and your equipment specifications.

Tools for Installation

The Cisco 12012 is designed to be installed with a minimum number of tools. The following are required tools:

• 1/4-inch flat-blade screwdriver

• 3/16-inch flat-blade screwdriver

• ESD-preventive wrist strap

• Antistatic mat

• Tape measure

• 10-mm wrench (either open-end or socket) for DC-input power supplies

• 9/16-inch or 15-mm wrench (either open-end or socket) to remove lag bolts from pallet

• Wire cutters

• Pliers

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Unpacking the Cisco 12012

T o un pack your Cisco 12012, use the u npacking instruct ions in the documen t Cisco 12012 Unpacking Ins t ru ctions posted on the outside of the shipping container.

Note Do not discard the shipping packaging. Y ou will need this packaging if you move or

ship the router in the future.

If packing material is lost or damaged, the Cisco 12012 packing materials are available as an ordera ble item; use Product Number P KG-GSR12=.

Checking the Shipping Packaging Contents

Check the contents of the shipping packaging and verify that the following are included with your shipment:

• One Cisco 12012, fully assembled (except for redundant AC-input power supplies)

• One to four power supplies. Systems configured for source DC operation are shipped

with one or two DC-input power supplies installed in the power supply bay. Systems

configured for source AC operation are shipped with two AC-input power supplies

installed in the po wer supply bay. If your system is conf igured with redund ant AC- input

power suppli es (one or two additional AC-input power supplies), the additional power

supplies are shipped packaged in a large cardboard box on the front of the pallet.

• One or more accessories boxes (one accessories box is shipped in the large cardboard

box on the front of the pallet. Additional accessories boxes are shipped separately.) If you do not receiv e ev erything you ordered, contact a customer service repres entativ e for

assistance.

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Site Log

A site log provides a historical record of all actions relevant to the Cisco 12012 operation and maintenance. Keep your s ite log in a common place near the rout er where anyone who performs tasks has access to it.

Site log entries might include the following:

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

any difficulties encountered and remedies during the installation process.

• Upgrades and removal/replacement procedures—use the site log as a record of system

maintenance and expansion history.

Each time a procedure is performed on the system, update the site log to reflect the

following:

— Any FRU installed, removed, or replaced

— Any Cisco 12012 configuration changes

— Software upgraded

— Corrective or preventive maintenance procedures performed

— Intermittent problems

— Related comments

T a ble 2-9 show s a sample site log page. Make copies o f the sampl e or design your o wn si te log to meet the needs of your site and equipment.

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Table 2-9 Site Log Example

Date Description of Action Performed or Symptom Observed Initials

Site Log

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Site Log

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CHAPTER

Installing a Cisco 12012

This chapter provides the procedures for installing the Cisco 1 2012 and contains the following sections:

• Installing the Brace Bar

• Removing the Cisco 12012 Compone nts before Installing the Frame

• Rack-Mounting the Frame

• Reinstalling the Cisco 12012 Components after Installing the Frame

• Connecting Line Card Cables

• Connecting Route Processor Cables

• Connecting Alarm Card Cables

• Connecting Power

Note You mus t install the Cisco 12012 in a rack; either a telco-style or a four-post unit.

The Cisco 12012 is not designed to be installed as a s h elf-mounted or a free-standing system.

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Before you install your Cisco 12012, your installation site should already be prepared. Ensure that you ha v e p lanned a comp atibl e location f or th e Cisco 12012 and that you h av e considered the followin g:

• The location does not block th e cooling air intake (f ront of the system) an d exhaust vents

(rear of system). There must be at least 6 inches (15.8 cm) of clearance in the rack for

the air intake and exhaust vents.

• The location is a temperature-controlled, air-conditioned, dust-free area.

• You have checked the power cables and power supplies for compatibility with your

power service; check the labels on the equipment and ensure that the power service at

your site is suitable for the Cisco 12012.

• The proper source voltage (AC or DC) receptacles have been provided.

• Maintain at least 24 inches (61 cm) of clearance in front of the frame for w ork ing with

line cards, blower modu les, power supplies, or attaching network interface cables or

equipment.

Warning The Cisco 12012 must be installed in a rack that is secu red to the building

structure.

Caution To prevent system problems, do not mix power supply input types in the

Cisco 12012 router. All power supplies installed in a router must be either AC-input or DC-input.

The Cisco 12012, fully configured, can weigh 380 lb (172.3 kg). The system installation process is structured to reduce the weight of the system by removing components fro m the card cage assembly and the frame, then ins talling the empty frame in the rack, and finally, reinstalling all of the components in the card cage assembly and the frame.

To make the installation process easier, reduce t he weight of the system. The installation procedure requires you to remove all of the components from the card cage assembly and the frame, then install the empty frame in the rack, and finally reinstall all of the components in the card cage assembly and the frame.

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Installing the Brace Bar

An optional brace bar is shipped with every Cisco 12012 as part of the accessory kit. You install the brace bar across the front of the rack to support the frame while you secure the frame is in the rack.

Caution The brace bar can only support the weight of an empty f rame. It is not desi gned

to support the full weight of the Cisco 12012.

This is an optional procedure; you can install the Cisco 12012 in the rack without a brace bar. If you choose not to use the brace bar, proceed to the next section “Removing the Cisco 12012 Components before Installi ng the Frame.”

Perform the following steps to install the brace bar (see Figure 3-1):

Step 1 Determine the proper height to install the brace bar in the rack. We recom mend

that you install the brace bar not mor e than 1 2 inch es (30 .5 cm) above the floor to maintain a low center of gravity for the system.

Installing the Brace Bar

Step 2 Position the brace bar between the front posts of a four-post rack or telco-style

rack; make sure that the bar is level.

Step 3 Secure the brace bar to the rack using the two scre ws pr o v ided in th e accessor y

kit.

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Removing the Cisco 12012 Components before Installing the Frame

Figure 3-1 Installing the Brace Bar

Brace bar

Telco-style rack

Installation screw

H10732

Removing the Cisco 12012 Components before Installing the Frame

To make the frame installation process easier, reduce the total weight of the system. The installation process requires you to remove all of the components from the card cage assembly and the frame, then install the empty frame in the rack, and finally reinstall all of the components in the card cage assembly and the frame.

Before you can remove the Cisco 12012 components, you must position the Cisco 12012, mounted on its shipping pallet (with the shipping container disassembled), as close to the installation site as possible.

A Cisco 12012 system confi gured for either source A C or sour ce DC power is sh ipped with power supplies installed in the power supply bay. Redundant AC-input power supplies (third and fourth power supplies) are shipped in a large cardboard box on the front of the pallet.

Procedures in the following sections provide the steps for removing the Cisco 12012 components:

• Removing the Blower Modules

• Removing Cards from the Card Cage Assembly

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