Cisco Systems 12416, 12816 User Manual 2
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The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class
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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
Copyright © 2000–2006 Cisco Systems, Inc. All rights reserved.
Audience
About This Guide
The Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and
Configuration Guide is written for hardware installers and system administrators
of Cisco routers.
This publication assumes that the user has a substantial background in installing
and configuring router and switch-based hardware. The reader should also be
familiar with electronic circuitry and wiring practices, and have experience as an
electronic or electromechanical technician.
Purpose
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This installation and configuration guide contains procedures for installing the
router hardware, creating a basic startup configuration file, and powering on the
router for the first time.
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Document Organization
Document Organization
This installation and configuration guide is organized into the following chapters
and appendixes:
• Chapter 1, “Product Overview,”provides an introduction to the major
components of the Cisco 12016, Cisco 12416, and Cisco 12816 series routers.
• Chapter 2, “Preparing for Installation,” describes safety considerations,
required tools and equipment, an overview of the installation, and procedures
to perform before the installation.
• Chapter 3, “Installing the Router,” provides instructions for installing the
hardware and connecting external network interface cables.
• Chapter 4, “System Startup and Basic Configuration,” provides simple
procedures for completing a basic system configuration, and for checking and
saving the configuration to system memory.
• Chapter 5, “Troubleshooting the Installation,” provides guidelines for
troubleshooting the router hardware installation.
• Chapter 6, “Router Field Diagnostics,” describes how to load and run router
field diagnostics.
• Chapter 7, “Maintaining the Router,”provides removal and replacement
procedures for primary router components or field-replaceable units (FRUs).
• Appendix A, “Technical Specifications,” provides a summary of physical,
electrical, and environmental specifications for the router.
About This Guide
xiv
• Appendix B, “Site Log,”provides a sample site log that can be used to record
actions relevant to the operation and maintenance of the router.
• Index
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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About This Guide
Document Conventions
This publication uses the following conventions:
• Ctrl represents the key labeled Control. For example, the key combination
Ctrl-Z means hold down the Control key while you press the z
Command descriptions use these conventions:
• Examples that contain system prompts denote interactive sessions, indicating
the commands that you should enter at the prompt. The system prompt
indicates the current level of the EXEC command interpreter.
For example, the prompt router> indicates that you should be at the user
level, and the prompt
level. Access to the privileged level usually requires a password. Refer to the
related software configuration and reference documentation for additional
information.
• Commands and keywords are in bold font.
• Arguments for which you supply values are in italic font.
• Elements in square brackets ([ ]) are optional.
• Alternative but required keywords are grouped in braces ({ }) and separated
by vertical bars (|).
Document Conventions
key.
router# indicates that you should be at the privileged
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Examples use these conventions:
• Terminal sessions and sample console screen displays are in screen font.
• Information you enter is in bold font.
• Nonprinting characters, such as passwords, are in angle brackets (< >).
• Default responses to system prompts are in square brackets ([ ]).
• Exclamation points (!) at the beginning of a line indicate a comment line.
Caution Means reader be careful. You are capable of doing something that might result in
equipment damage or loss of data.
Note Means reader take note. Notes contain helpful suggestions or references to
materials not contained in this manual.
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Obtaining Documentation
Timesaver Means the described action saves time. You can save time by performing the
action described in the paragraph.
About This Guide
Warning
This warning symbol means danger. You are in a situation that could cause
bodily injury. Before you work on any equipment, be aware of the hazards
involved with electrical circuitry and be familiar with standard practices for
preventing accidents. To see translations of the warnings that appear in this
publication, refer to the Regulatory Compliance and Safety Information
document that accompanied this device.
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:
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You can access the Cisco website at this URL:
http://www.cisco.com
You can access international Cisco websites at this URL:
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About This Guide
Product Documentation DVD
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Product Documentation DVD is updated regularly and may be more current than
printed documentation.
The Product Documentation DVD is a comprehensive library of technical product
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Obtaining Documentation
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Ordering Documentation
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Documentation Feedback
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About This Guide
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Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.ht
ml
From this site, you can perform these tasks:
• Report security vulnerabilities in Cisco products.
• Obtain assistance with security incidents that involve Cisco products.
• Register to receive security information from Cisco.
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About This Guide
A current list of security advisories and notices for Cisco products is available at
this
URL:
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If you prefer to see advisories and notices as they are updated in real time, you
can access a Product Security Incident Response Team Really Simple Syndication
(PSIRT RSS) feed from this
URL:
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Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally
before we release them, and we strive to correct all vulnerabilities quickly. If you
think that you might have identified a vulnerability in a Cisco product, contact
PSIRT:
• Emergencies — security-alert@cisco.com
An emergency is either a condition in which a system is under active attack
or a condition for which a severe and urgent security vulnerability should be
reported. All other conditions are considered nonemergencies.
• Nonemergencies — psirt@cisco.com
In an emergency, you can also reach PSIRT by telephone:
Cisco Product Security Overview
OL-11495-01
• 1 877 228-7302
• 1 408 525-6532
Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product to
encrypt any sensitive information that you send to Cisco. PSIRT can work from
encrypted information that is compatible with PGP versions
2.x through 8.x.
Never use a revoked or an expired encryption key. The correct public key to use
in your correspondence with PSIRT is the one linked in the Contact Summary
section of the Security Vulnerability Policy page at this
URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.ht
ml
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Obtaining Technical Assistance
The link on this page has the current PGP key ID in use.
Obtaining Technical Assistance
Cisco Technical Support provides 24-hour-a-day award-winning technical
assistance. The Cisco Technical Support & Documentation website on Cisco.com
features extensive online support resources. In addition, if you have a valid Cisco
service contract, Cisco Technical Assistance Center (TAC) engineers provide
telephone support. If you do not have a valid Cisco service contract, contact your
reseller.
Cisco Technical Support & Documentation Website
The Cisco Technical Support & Documentation 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, at this
http://www.cisco.com/techsupport
About This Guide
URL:
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Access to all tools on the Cisco Technical Support & Documentation 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
http://tools.cisco.com/RPF/register/register.do
Note Use the Cisco Product Identification (CPI) tool to locate your product serial
number before submitting a web or phone request for service. You can access the
CPI tool from the Cisco Technical Support & Documentation website by clicking
the Tools & Resources link under Documentation & Tools. Choose Cisco
Product Identification Tool from the Alphabetical Index drop-down list, or click
the Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool
offers three search options: by product ID or model name; by tree view; or for
certain products, by copying and pasting show command output. Search results
show an illustration of your product with the serial number label location
highlighted. Locate the serial number label on your product and record the
information before placing a service call.
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About This Guide
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 in which your network is
minimally impaired or for which you require product information.) After you
describe your situation, the TAC Service Request Tool provides recommended
solutions. If your issue is not resolved using the recommended resources, your
service request is assigned to a Cisco 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 have Internet access, contact the
Cisco TAC by telephone. (S1 or S2 service requests are those in which your
production network is down or severely degraded.) Cisco 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
Obtaining Technical Assistance
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 degraded, 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.
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About This Guide
Obtaining Additional Publications and Information
Severity 3 (S3)—Operational performance of your network is impaired, but most
business operations remain functional. You and Cisco will commit resources
during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information 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, technologies, and network solutions is
available from various online and printed sources.
• Cisco Marketplace provides a variety of Cisco books, reference guides,
documentation, and logo merchandise. Visit Cisco Marketplace, the company
store, at this
http://www.cisco.com/go/marketplace/
• 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
http://www.ciscopress.com
• Pack et magazine is the Cisco Systems technical user magazine for
maximizing Internet and networking investments. Each quarter, Packet
delivers coverage of the latest industry trends, technology breakthroughs, and
Cisco products and solutions, 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. You can access Packet magazine at this
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
URL:
URL:
URL:
xxii
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About This Guide
Obtaining Additional Publications and Information
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
or view the digital edition at this URL:
http://ciscoiq.texterity.com/ciscoiq/sample/
• Internet Protocol Journal is a quarterly journal published by Cisco Systems
for engineering professionals involved in designing, developing, and
operating public and private internets and intranets. You can access the
Internet Protocol Journal at this
http://www.cisco.com/ipj
• Networking products offered by Cisco Systems, as well as customer support
services, can be obtained at this
http://www.cisco.com/en/US/products/index.html
• Networking Professionals Connection is an interactive website for
networking professionals to share questions, suggestions, and information
about networking products and technologies with Cisco experts and other
networking professionals. Join a discussion at this
http://www.cisco.com/discuss/networking
• World-class networking training is available from Cisco. You can view
current offerings at this
URL:
URL:
URL:
URL:
OL-11495-01
http://www.cisco.com/en/US/learning/index.html
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Obtaining Additional Publications and Information
About This Guide
xxiv
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About This Guide xiii
Audience xiii
Purpose xiii
Document Organization xiv
Document Conventions xv
Obtaining Documentation xvi
Cisco.com xvi
Product Documentation DVD xvii
Ordering Documentation xvii
Documentation Feedback xviii
Cisco Product Security Overview xviii
Reporting Security Problems in Cisco Products xix
CONTENTS
CHAPTER
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Obtaining Technical Assistance xx
Cisco Technical Support & Documentation Website xx
Submitting a Service Request xxi
Definitions of Service Request Severity xxi
Obtaining Additional Publications and Information xxii
1 Product Overview 1-1
Introduction 1-1
Physical and Functional Description of Router 1-2
AC and DC Power Subsystems 1-4
Standard AC Power Shelf 1-4
Optional AC Power Shelf 1-7
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Contents
AC Power Supplies 1-10
DC Power Shelf 1-12
DC Power Supplies 1-15
Chassis Card Cages 1-17
Upper Card Cage 1-17
Lower Card Cage 1-18
Switch Fabric Card Cage 1-18
Switch Fabric Overview 1-19
Switch Fabric Card Functionality 1-19
Clock Scheduler Cards 1-20
Switch Fabric Cards 1-20
Alarm Card, Line Card, and Rout Processor Overview 1-21
Alarm Cards 1-21
Line Cards 1-23
Route Processor Selection 1-24
Gigabit Route Processor Overview 1-24
GRP PCMCIA Card Slots and Status LEDs 1-25
GRP Reset Switch 1-27
GRP Auxiliary and Console Ports 1-28
GRP Ethernet Ports and Status LEDs 1-28
GRP Alphanumeric Message Displays 1-30
GRP Memory Components 1-31
GRP DRAM 1-33
GRP SRAM 1-33
GRP NVRAM 1-33
GRP Flash Memory 1-34
Performance Route Processor Overview 1-34
PRP PCMCIA Card Slots and Status LEDs 1-35
PRP Ethernet Ports and Status LEDs 1-35
PRP Auxiliary and Console Ports 1-36
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PRP Reset Switch 1-37
PRP Alphanumeric Message Displays 1-38
PRP Memory Components 1-39
PRP SDRAM 1-41
PRP SRAM 1-41
PRP NVRAM 1-42
PRP Flash Memory 1-42
Upper and Lower Cable Management Brackets 1-43
Blower Module 1-44
Contents
CHAPTER
2 Preparing for Installation 2-1
Safety Guidelines 2-2
Safety with Equipment 2-2
Safety with Electricity 2-3
Preventing Electrostatic Discharge Damage 2-4
Lifting Guidelines 2-6
Compliance and Safety Information 2-6
Laser Safety 2-7
Site Requirement Guidelines 2-7
Rack-Mounting Guidelines 2-7
Enclosed Rack 2-8
Open Rack 2-8
Telco Rack 2-9
Site Layout and Equipment Dimensions 2-11
Air Flow Guidelines 2-15
Temperature and Humidity Guidelines 2-17
Power Connection Guidelines 2-17
AC-Powered Routers 2-18
DC-Powered Routers 2-19
NEBS Supplemental Unit Bonding and Grounding Guidelines 2-22
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Contents
Site Wiring Guidelines 2-24
GRP Port Connection Guidelines 2-25
GRP Auxiliary and Console Port Connections 2-26
GRP Auxiliary Port Signals 2-27
GRP Console Port Signals 2-28
GRP Ethernet Port Connections 2-29
GRP RJ-45 Ethernet Connections 2-31
GRP MII Ethernet Connections 2-33
PRP Port Connection Guidelines 2-36
PRP Auxiliary and Console Port Connection Guidelines 2-36
PRP Auxiliary Port Signals 2-38
PRP Console Port Signals 2-39
PRP Ethernet Connections 2-40
PRP RJ-45 Ethernet Connections 2-42
Alarm Card Connection Guidelines 2-45
CHAPTER
vi
3 Installing the Router 3-1
Pre-Installation Considerations and Requirements 3-2
Required Tools and Equipment 3-3
Unpacking and Positioning the Router 3-3
Removing the Front Covers from Cisco 12016 Original Series Routers 3-4
Removing the Front Cover from Cisco 12016 Enhanced Series Routers 3-6
Rack-Mounting the Router Chassis 3-8
Verifying Rack Dimensions 3-8
Installing Center-Mount Brackets—Optional 3-9
Installing the Chassis Rack-Mounting Platform 3-13
Unpack and Position the Router 3-15
Installing the Chassis into the Rack 3-16
Supplemental Bonding and Grounding Connections 3-21
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Connecting to the Front Grounding Receptacle 3-22
Connecting to the Top Rear Receptacle 3-24
Attaching the Vertical Cable-Management Trough 3-25
Connecting Line Card Network Interface Cables 3-27
Connecting GRP Route Processor Cables 3-31
Connecting to the GRP Console Port 3-32
Connecting to the GRP Auxiliary Port 3-33
Connecting to the GRP Ethernet Port 3-33
RJ-45 Connection 3-35
MII Connection 3-35
Connecting PRP Route Processor Cables 3-36
Connecting to the PRP Console Port 3-37
Connecting to the PRP Auxiliary Port 3-38
Connecting to the PRP Ethernet Ports 3-38
Connecting an Alarm Card Cable 3-40
Contents
CHAPTER
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Connecting Power to the Power Shelf 3-41
Connecting Power to the AC-Input Power Shelf 3-41
Connecting Power to the DC-Input Power Shelf 3-42
Installing the Front Covers of Cisco 12016 Original Series Routers 3-47
Installing the Front Cover of Cisco 12010 Enhanced Series Routers 3-49
4 System Startup and Basic Configuration 4-1
Sources of Cisco IOS Software 4-2
Preconfiguration Requirements 4-2
Boot Process Overview 4-3
Powering On the Router and Observing the Boot Process 4-4
Manually Booting the System 4-11
Locating a Valid Cisco IOS Software Image 4-12
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Contents
Booting from the Cisco IOS Software Image 4-12
Configuring the Router 4-14
Cisco IOS User Interface 4-15
Cisco IOS User Interface Command Modes 4-15
User EXEC Mode 4-16
Privileged EXEC Mode 4-16
Global Configuration Mode 4-17
Using Setup for Configuration Changes 4-18
Configuring Global Parameters Using the Setup Facility 4-22
Configuring Network Interfaces 4-24
Checking the Software Version Number and Installed Interfaces 4-26
Using Global Configuration Mode 4-27
Verifying Running Configuration File Settings 4-28
Saving the Running Configuration Settings to NVRAM 4-29
Viewing the Running Configuration Settings 4-30
viii
Configuring the Software Configuration Register 4-31
Setting Software Configuration Settings 4-33
Changing Software Configuration Register Settings 4-35
Low-Order Bits in the Software Configuration Register 4-37
High-Order Bits in the Software Configuration Register 4-39
Recovering a Lost Password 4-41
Using RP Flash Memory Cards 4-44
Installing and Removing a Flash Memory Card 4-44
Formatting a New Flash Memory Card 4-47
Specifying a Cisco IOS Software Image to Boot the System 4-48
Flash Memory Commands 4-49
pwd Command 4-49
cd Command 4-49
dir Command 4-50
delete Command 4-50
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squeeze Command 4-51
Booting from Flash Memory 4-52
Copying Image Files to or From Flash Memory 4-52
Copying a Cisco IOS Software Image into a Flash Memory Card 4-54
Copying Cisco IOS Software Images Between Flash Memory Cards 4-56
Copying System Configuration Files Between RP Memory and a Flash
Memory Card 4-57
Booting a New Cisco IOS Software Image from a Flash Memory
Card 4-62
Recovering from Locked Blocks in Flash Memory Cards 4-62
Post-Installation Procedures 4-63
Contents
CHAPTER
5 Troubleshooting the Installation 5-1
Troubleshooting Overview 5-2
Troubleshooting Using a Subsystem Approach 5-2
Normal Router Startup Sequence 5-3
Identifying Startup Issues 5-4
Troubleshooting the Power Subsystem 5-5
Troubleshooting the AC-Input Power Subsystem 5-6
Troubleshooting the DC-Input Power Subsystem 5-10
Additional Power Subsystem Troubleshooting Information 5-14
Troubleshooting the Power Distribution System 5-15
Troubleshooting the Processor Subsystem 5-17
Troubleshooting the RP 5-18
Troubleshooting Using the RP Alphanumeric Display 5-19
Troubleshooting Line Cards 5-20
Troubleshooting Using the Line Card Alphanumeric Display 5-22
Troubleshooting Using the Alarm Cards 5-27
Monitoring Critical, Major, and Minor Alarm Status 5-28
Troubleshooting the Switch Fabric 5-29
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Contents
Analyzing the Data 5-30
crc16 Output 5-30
Grant Parity and Request Errors 5-33
Properly Seating Switch Fabric Cards 5-35
Troubleshooting the Cooling Subsystem 5-36
Blower Module Operation 5-38
Power Supply Operation 5-38
Overtemperature Conditions 5-39
Isolating Cooling Subsystem Problems 5-39
CHAPTER
CHAPTER
6 Router Field Diagnostics 6-1
Diagnostics Overview 6-2
Downloading the Diagnostic Image 6-3
Field-Programmable Gate Array Overview 6-3
Upgrading an FPGA Image on a Line Card 6-5
Using the diag Command 6-8
Diagnostic Commands for Cisco 12016, Cisco 12416, and Cisco 12816
RouterLine Cards 6-8
Diagnostic Commands for Cisco 12000 Series Rout Processors 6-9
Diagnostic Commands for Cisco 12000 Series Switch Fabric Cards and Clock
Scheduler Cards 6-9
Diagnostic Command Reference Table 6-9
diag Command Output Examples 6-13
Testing Without the verbose Option 6-13
Testing Using the verbose Option 6-14
Displaying Previous Test Results 6-16
7 Maintaining the Router 7-1
Prerequisites and Preparation 7-2
Powering Off the Router 7-2
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Contents
Removing and Installing the Front Covers and Bezel Extenders on Original Cisco
12000 Series Routers 7-3
Removing the Front Covers 7-3
Installing the Front Covers 7-4
Attaching Bezel Extenders to the Front Cover 7-6
Removing and Replacing the Air Filter Door Front Cover 7-9
Removing and Installing Front Doors on Cisco 12016 Enhanced Series
Routers 7-13
Cleaning or Replacing the Chassis Air Filter 7-17
Cleaning or Replacing the Chassis Air Filter on Cisco 12016 Original Series
Routers 7-18
Cleaning or Replacing the Chassis Air Filter on Cisco 12016 Enhanced Series
Routers 7-22
Removing and Replacing Blower Modules 7-24
Upper and Lower Blower Module Orientation 7-25
Troubleshooting the Blower Installation 7-28
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Removing and Replacing AC and DC Power Subsystem Components 7-29
Installation Guidelines 7-29
Power Supply and Power Shelf Compatibility 7-30
Installing Upgrade Kits 7-32
Removing and Replacing an AC Power Supply 7-33
Troubleshooting the AC Power Supply Installation 7-42
Removing and Replacing the Standard AC-Input Power Shelf 7-44
Removing and Replacing the Optional 2-Level AC-Input Power Shelf 7-51
Troubleshooting the AC Power Shelf Installation 7-57
Upgrading the AC-Input Power Shelf 7-59
Removing and Replacing a DC PEM 7-60
Troubleshooting the DC PEM Installation 7-66
Removing and Replacing the DC-Input Power Shelf 7-68
Troubleshooting the DC Power Shelf Installation 7-77
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Contents
Removing and Replacing Cards from the Chassis 7-79
Removing and Replacing RP and Line Cards from the Upper and Lower Card
Cages 7-79
Removing and Replacing an Alarm Card 7-81
Removing and Replacing Switch Fabric Cards 7-84
Upgrading the Switch Fabric 7-86
Upgrade Requirements 7-86
Upgrade Procedures 7-87
Removing and Installing a Chassis 7-88
Preparing the Replacement Chassis 7-90
Preparing the Installed Chassis for Removal 7-90
Removing and Installing System Components 7-91
Removing the Chassis from the Equipment Rack 7-92
Installing the Replacement Chassis 7-97
Removing and Replacing a Power Bus Board Fuse 7-97
APPENDIX
APPENDIX
I
NDEX
xii
A Technical Specifications A-1
Router Specifications A-1
Compliance and Safety Information A-5
B Site Log B-1
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Introduction
CHA P TER
1
Product Overview
This chapter provides an overview of the Cisco 12016, Cisco 12416, and
Cisco
12816 series routers. It contains physical descriptions of the router
hardware and major components, as well as functional descriptions of the
hardware-related features.
The routers described in this guide are part of the Cisco 12016, Cisco 12416, and
Cisco 12816 series routers and include:
• The original Cisco 12016, Cisco 12416, and Cisco 12816 series routers.
• The newer Cisco 12016, Cisco 12416, and Cisco 12816 enhanced series
routers. The enhanced series of routers use higher capacity power supplies,
more powerful blower modules, and have newly designed front doors.
The capacity of the router switch fabric differentiates each model:
• Cisco 12016 Router—2.5-Gbps switch fabric
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• Cisco 12416 Route—10-Gbps switch fabric
• Cisco 12816 Router—40-Gbps switch fabric
Other than their various capacities, these routers are nearly identical. Differences
between each router are described where necessary, and unless otherwise noted,
the information in this publication applies to all routers.
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Chapter 1 Product Overview
Physical and Functional Description of Router
Physical and Functional Description of Router
The Cisco 12000 series router chassis is a sheet-metal enclosure that houses router
components. The major components consist of three power supplies, upper and
lower line card cages, a switch fabric card cage, and upper and lower blower
modules. Power is distributed to these components over the chassis backplane.
All router models contain the following major components (Figure 1-1):
• Power shelf and power supplies—Three AC or DC power entry modules
(PEMs) provide power to the router. See the
section on page 1-4 for additional information.
• Upper blower module—Supplies cooling air to the upper half of the router so
it does not overheat. See the
“Blower Module” section on page 1-44 for
additional information.
• Upper and lower cable management brackets—Used to neatly route line card
cables. See the
“Upper and Lower Cable Management Brackets” section on
page 1-43 for additional information.
• Upper Line card and Route Processor card cage—Has 8 user-configurable
slots that support a combination of line cards, a route processor (RP), and an
alarm card. See the
“Alarm Card, Line Card, and Rout Processor Overview”
section on page 1-21 for additional information.
“AC and DC Power Subsystems”
1-2
• Switch fabric card cage—Located behind the air filter door, this card cage
contains 5 slots for the switch fabric card set. The switch fabric card set is
made up of 3 switch fabric cards (SFCs) and 2 clock scheduler cards (CSCs).
See the
“Switch Fabric Overview” section on page 1-19 for additional
information.
• Lower Line card and Route Processor card cage—Has 8 user-configurable
slots that support a combination of line cards, a redundant route processor
(RP), and an alarm card. See the
“Alarm Card, Line Card, and Rout Processor
Overview” section on page 1-21 for additional information.
• Lower blower module—Supplies cooling air to the lower half of the router so
it does not overheat. See the
“Blower Module” section on page 1-44 for
additional information.
• Chassis backplane (not shown)—Distributes power to card cages and to the
blower modules.
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Chapter 1 Product Overview
Figure 1-1 Cisco 12016 Series Router Components—Front View
Power shelf and
power supplies
Upper blower
module
Physical and Functional Description of Router
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26194
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1-3
Physical and Functional Description of Router
AC and DC Power Subsystems
A router ships with either an AC or DC powered system. Source power connects
to the power shelf at the back of the chassis which route power to the power
supplies, also referred to as power entry modules (PEMs).
Standard AC Power Shelf
The standard AC-input power subsystem consists of a single-level AC-input
power shelf that house three (2000
AC power supplies which supply full redundant power to the router.
shows the standard power shelf housing original series 2000 W power supplies.
The power supplies participate in an N+1 redundant current-sharing scheme that
is divided among all three power supplies. If one power supply fails, the system
can continue to operate temporarily, (depending on your system configuration)
with the remaining two power supplies. Failed power supplies should be replaced
as soon as possible to ensure full redundancy.
Chapter 1 Product Overview
W original series or 2400 W enhanced series)
Figure 1-2
1-4
Caution To ensure that the chassis configuration complies with the required power
budgets, use the on-line power calculator. Failure to properly verify the
configuration may result in an unpredictable state if one of the power units fails.
Contact your local sales representative for assistance.
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