Cisco Router IOS XR User manual

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Cisco IOS XR Getting Started Guide
Cisco IOS XR Software Release 3.4
Text Part Number: OL-10957-02

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Cisco IOS XR Getting Started Guide
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CONTENTS
Preface ix
Changes to This Document ix
About This Document ix
Intended Audience x
Organization of the Document x
Related Documents x
Conventions xi
Obtaining Documentation xi
Cisco.com xi
Product Documentation DVD xii
Ordering Documentation xii
Documentation Feedback xii
Cisco Product Security Overview xii
Reporting Security Problems in Cisco Products xiii
Product Alerts and Field Notices xiii
Obtaining Technical Assistance xiv
Cisco Technical Support & Documentation Website xiv
Submitting a Service Request xv
Definitions of Service Request Severity xv
Obtaining Additional Publications and Information xv
CHAPTER 1Introduction to Cisco IOS XR Software 1-1
Contents 1-1
Supported Standalone System Configurations 1-1
Cisco CRS-1 Multishelf System Overview 1-2
Router Management Interfaces 1-6
Command-Line Interface 1-6
Craft Works Interface 1-6
Extensible Markup Language API 1-6
Simple Network Management Protocol 1-7
Selecting and Identifying the Designated Shelf Controller 1-7
Selecting and Identifying the DSC on Cisco CRS-1 Routers 1-8
Selecting and Identifying the DSC on Cisco CRS-1 Multishelf Systems 1-8
Selecting and Identifying the DSC on Cisco XR 12000 and 12000 Series Routers 1-9

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Connecting to the Router Through the Console Port 1-9
Where to Go Next 1-14
CHAPTER 2Bringing Up the Cisco IOS XR Software on a Standalone Router 2-1
Contents 2-1
Prerequisites 2-1
Software Requirements 2-1
Hardware Prerequisites and Documentation 2-2
Bringing Up and Configuring a Standalone Router 2-2
Verifying the System After Initial Bring-Up 2-4
Where to Go Next 2-8
CHAPTER 3Bringing Up the Cisco IOS XR Software on a Multishelf System 3-1
Contents 3-1
Prerequisites 3-1
Software Requirements 3-1
Hardware Requirements 3-2
Restrictions 3-2
Information About Bringing Up a Multishelf System 3-3
Bringup Overview 3-3
Preparing a Rack Number Plan 3-3
Configuring the External Cisco Catalyst 6509 Switches 3-8
Prerequisites 3-9
Restrictions 3-10
Before You Begin 3-10
Information About the Catalyst Switch Configuration 3-11
Configuring the Catalyst Switches 3-11
Verifying the Catalyst Switch 3-18
Integrated Switch System 3-20
Prerequisites for an Integrated Switch System 3-20
Restrictions for an Integrated Switch System 3-21
Before You Begin 3-21
Information About the Integrated Switch Implementation 3-21
Implementing the Integrated Switch System 3-23
Verifying the Connections of the Integrated Switch Control Network 3-25
Bringing Up and Configuring Rack 0 3-28
Bringing Up and Verifying FCCs 3-34
Bringing Up and Verifying the Non-DSC LCC 3-37

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Verifying the Spanning Tree 3-39
Verifying Fabric Cabling Connections 3-43
Where to Go Next 3-47
CHAPTER 4Configuring General Router Features 4-1
Contents 4-1
Secure Domain Routers 4-1
Connecting and Communicating with the Router 4-2
Establishing a Connection Through the Console Port 4-6
Establishing a Connection Through a Terminal Server 4-8
Establishing a Connection Through the Management Ethernet Interface 4-10
Logging In to a Router or an SDR 4-11
CLI Prompt 4-12
User Access Privileges 4-13
User Groups, Task Groups, and Task IDs 4-13
Predefined User Groups 4-14
Displaying the User Groups and Task IDs for Your User Account 4-14
Navigating the Cisco IOS XR Command Modes 4-17
Identifying the Command Mode in the CLI Prompt 4-18
Summary of Common Command Modes 4-19
Entering EXEC Commands from a Configuration Mode 4-21
Command Mode Navigation Example 4-22
Managing Configuration Sessions 4-23
Displaying the Active Configuration Sessions 4-24
Starting a Configuration Session 4-25
Starting an Exclusive Configuration Session 4-26
Displaying Configuration Details with show Commands 4-26
Saving the Target Configuration to a File 4-33
Loading the Target Configuration from a File 4-33
Loading an Alternative Configuration at System Startup 4-33
Clearing All Changes to a Target Configuration 4-34
Committing Changes to the Running Configuration 4-34
Reloading a Failed Configuration 4-36
Exiting a Configuration Submode 4-37
Returning Directly to Configuration Mode from a Submode 4-37
Ending a Configuration Session 4-37
Aborting a Configuration Session 4-38
Configuring the SDR Hostname 4-38

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Configuring the Management Ethernet Interface 4-39
Specifying the Management Ethernet Interface Name in CLI Commands 4-39
Displaying the Available Management Ethernet Interfaces 4-40
Configuring the Management Ethernet Interface 4-41
Manually Setting the Router Clock 4-44
Where to Go Next 4-46
CHAPTER 5Configuring Additional Router Features 5-1
Contents 5-1
Configuring the Domain Name and Domain Name Server 5-1
Configuring Telnet, HTTP, and XML Host Services 5-2
Prerequisites 5-2
Managing Configuration History and Rollback 5-3
Displaying the CommitIDs 5-4
Displaying the Configuration Changes Recorded in a CommitID 5-4
Previewing Rollback Configuration Changes 5-5
Rolling Back the Configuration to a Specific Rollback Point 5-6
Rolling Back the Configuration over a Specified Number of Commits 5-6
Loading CommitID Configuration Changes to the Target Configuration 5-7
Loading Rollback Configuration Changes to the Target Configuration 5-8
Deleting CommitIDs 5-8
Configuring Logging and Logging Correlation 5-9
Logging Locations and Severity Levels 5-9
Alarm Logging Correlation 5-10
Configuring Basic Message Logging 5-10
Disabling Console Logging 5-12
Creating and Modifying User Accounts and User Groups 5-13
Displaying Details About User Accounts, User Groups, and Task IDs 5-13
Configuring User Accounts 5-14
Creating Users and Assigning Groups 5-14
Configuration Limiting 5-16
Static Route Configuration Limits 5-16
IS-IS Configuration Limits 5-17
OSPFv2 and v3 Configuration Limits 5-17
BGP Configuration Limits 5-20
Routing Policy Language Line and Policy Limits 5-21
Multicast Configuration Limits 5-23
MPLS Configuration Limits 5-23
Other Configuration Limits 5-24

Contents
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CHAPTER 6CLI Tips, Techniques, and Shortcuts 6-1
Contents 6-1
CLI Tips and Shortcuts 6-1
Entering Abbreviated Commands 6-2
Using the Question Mark (?) to Display On-Screen Command Help 6-2
Completing a Partial Command with the Tab Key 6-4
Identifying Command Syntax Errors 6-4
Using the no Form of a Command 6-5
Editing Command Lines that Wrap 6-5
Displaying System Information with show Commands 6-5
Common show Commands 6-6
Browsing Display Output when the --More-- Prompt Appears 6-7
Halting the Display of Screen Output 6-7
Redirecting Output to a File 6-8
Narrowing Output from Large Configurations 6-8
Filtering show Command Output 6-9
Wildcards, Templates, and Aliases 6-11
Using Wildcards to Identify Interfaces in show Commands 6-11
Creating Configuration Templates 6-12
Applying Configuration Templates 6-14
Aliases 6-15
Keystrokes Used as Command Aliases 6-16
Command History 6-16
Displaying Previously Entered Commands 6-16
Recalling Previously Entered Commands 6-17
Recalling Deleted Entries 6-17
Redisplaying the Command Line 6-17
Key Combinations 6-18
Key Combinations to Move the Cursor 6-18
Keystrokes to Control Capitalization 6-18
Keystrokes to Delete CLI Entries 6-19
Transposing Mistyped Characters 6-19
CHAPTER 7Troubleshooting the Cisco IOS XR Software 7-1
Contents 7-1
Additional Sources for Information 7-1
Basic Troubleshooting Commands 7-1
Using show Commands to Display System Status and Configuration 7-2

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Using the ping Command 7-3
Using the traceroute Command 7-4
Using debug Commands 7-5
Configuration Error Messages 7-7
Configuration Failures During a Commit Operation 7-8
Configuration Errors at Startup 7-8
Memory Warnings in Configuration Sessions 7-9
Understanding Low-Memory Warnings in Configuration Sessions 7-9
Displaying System Memory Information 7-10
Removing Configurations to Resolve Low-Memory Warnings 7-11
Contacting TAC for Additional Assistance 7-13
Interfaces Not Coming Up 7-13
Verifying the System Interfaces 7-13
APPENDIX AUnderstanding Regular Expressions, Special Characters, and Patterns A-1
Regular Expressions A-1
Special Characters A-2
Character Pattern Ranges A-2
Multiple-Character Patterns A-3
Complex Regular Expressions Using Multipliers A-3
Pattern Alternation A-4
Anchor Characters A-4
Underscore Wildcard A-4
Parentheses Used for Pattern Recall A-4
G LOSSARY
I NDEX

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Preface
This guide describes how to create the initial configuration for a router using the
Cisco IOS XR software. This guide also describes how to complete additional administration,
maintenance, and troubleshooting tasks that may be required after initial configuration.
This preface contains the following sections:
•Changes to This Document, page ix
•About This Document, page ix
•Obtaining Documentation, page xi
•Documentation Feedback, page xii
•Cisco Product Security Overview, page xii
•Product Alerts and Field Notices, page xiii
•Obtaining Technical Assistance, page xiv
•Obtaining Additional Publications and Information, page xv
Changes to This Document
Table 1 lists the technical changes made to this document since it was first printed.
About This Document
The following sections provide information about Cisco IOS XR Getting Started Guide and related
documents:
Table 1 Changes to This Document
Revision Date Change Summary
OL-10957-02 February 2007 Chapter 3, “Bringing Up the Cisco IOS XR Software on a
Multishelf System” was modified as follows:
•Added the 22-port shelf controller Gigabit Ethernet (22-port
SCGE) card. See “Integrated Switch System” section on
page 20.
OL-10957-01 October 2006 Initial release of the document.

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About This Document
•Intended Audience, page x
•Organization of the Document, page x
•Related Documents, page x
•Conventions, page xi
Intended Audience
This document is intended for the following people:
•Experienced service provider administrators
•Cisco telecommunications management engineers
•Third-party field service technicians who have completed the Cisco IOS XR software training
sessions
•Customers who daily use and manage routers running Cisco IOS XR software
Organization of the Document
This document contains the following chapters:
•Chapter 1, “Introduction to Cisco IOS XR Software”
•Chapter 2, “Bringing Up the Cisco IOS XR Software on a Standalone Router”
•Chapter 3, “Bringing Up the Cisco IOS XR Software on a Multishelf System”
•Chapter 4, “Configuring General Router Features”
•Chapter 5, “Configuring Additional Router Features”
•Chapter 6, “CLI Tips, Techniques, and Shortcuts”
•Chapter 7, “Troubleshooting the Cisco IOS XR Software”
•Appendix A, “Understanding Regular Expressions, Special Characters, and Patterns”
Related Documents
For a complete listing of available documentation for the Cisco IOS XR software and the routers on
which it operates, see the following Web pages:
•Cisco IOS XR Software Documentation
http://www.cisco.com/univercd/cc/td/doc/product/ioxsoft/index.htm
•Cisco CRS-1 Carrier Routing System Documentation
http://www.cisco.com/univercd/cc/td/doc/product/core/crs/
•Cisco 12000 Series Router Documentation
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/index.htm
•Cisco Catalyst 6509 Switch Documentation
http://www.cisco.com/en/US/products/hw/switches/ps708/
tsd_products_support_series_home.html

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Obtaining Documentation
Note Cisco IOS XR software runs only on the Cisco XR 12000 Series Routers listed in the “Supported
Standalone System Configurations” section on page 1 in Chapter 1, “Introduction to Cisco IOS XR
Software.”
Conventions
This document uses the following conventions:
Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the
publication.
Tip Means the following information will help you solve a problem. The information in tips might not be
troubleshooting or an action, but contains useful information.
Caution Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. This section explains the
product documentation resources that Cisco offers.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/techsupport
Item Convention
Commands and keywords boldface font
Variable for which you supply values italic font
Displayed session and system information screen font
Commands and keywords you enter in an
interactive environment
boldface screen font
Variables you enter in an interactive environment
italic screen font
Menu items and button names boldface font
Menu navigation Option > Network Preferences

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Documentation Feedback
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
Product Documentation DVD
The Product Documentation DVD is a library of technical product documentation on a portable medium.
The DVD enables you to access installation, configuration, and command guides for Cisco hardware and
software products. With the DVD, you have access to the HTML documentation and some of the
PDF files found on the Cisco website at this URL:
http://www.cisco.com/univercd/home/home.htm
The Product Documentation DVD is created monthly and is released in the middle of the month. DVDs
are available singly or by subscription. Registered Cisco.com users can order a Product Documentation
DVD (product number DOC-DOCDVD= or DOC-DOCDVD=SUB) from Cisco Marketplace at the
Product Documentation Store at this URL:
http://www.cisco.com/go/marketplace/docstore
Ordering Documentation
You must be a registered Cisco.com user to access Cisco Marketplace. Registered users may order
Cisco documentation at the Product Documentation Store at this URL:
http://www.cisco.com/go/marketplace/docstore
If you do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Documentation Feedback
You can provide feedback about Cisco technical documentation on the Cisco Technical Support &
Documentation site area by entering your comments in the feedback form available in every online
document.
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.html
From this site, you will find information about how to do the following:
•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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Product Alerts and Field Notices
A current list of security advisories, security notices, and security responses for Cisco products is
available at this URL:
http://www.cisco.com/go/psirt
To see security advisories, security notices, and security responses as they are updated in real time, you
can subscribe to the Product Security Incident Response Team Really Simple Syndication (PSIRT RSS)
feed. Information about how to subscribe to the PSIRT RSS feed is found at this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
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 have identified a vulnerability
in a Cisco product, contact PSIRT:
•For emergencies only—security[email protected]m
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.
•For nonemergencies—[email protected]om
In an emergency, you can also reach PSIRT by telephone:
•1 877 228-7302
•1 408 525-6532
Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product (for example, GnuPG) to
encrypt any sensitive information that you send to Cisco. PSIRT can work with information that has been
encrypted with PGP versions 2.xthrough 9.x.
Never use a revoked encryption key 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.html
The link on this page has the current PGP key ID in use.
If you do not have or use PGP, contact PSIRT to find other means of encrypting the data before sending
any sensitive material.
Product Alerts and Field Notices
Modifications to or updates about Cisco products are announced in Cisco Product Alerts and Cisco Field
Notices. You can receive Cisco Product Alerts and Cisco Field Notices by using the Product Alert Tool
on Cisco.com. This tool enables you to create a profile and choose those products for which you want to
receive information.

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Obtaining Technical Assistance
To access the Product Alert Tool, you must be a registered Cisco.com user. (To register as a Cisco.com
user, go to this URL: http://tools.cisco.com/RPF/register/register.do) Registered users can access the
tool at this URL: http://tools.cisco.com/Support/PAT/do/ViewMyProfiles.do?local=en
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 URL:
http://www.cisco.com/techsupport
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 URL:
http://tools.cisco.com/RPF/register/register.do
Note Use the Cisco Product Identification Tool to locate your product serial number before submitting a
request for service online or by phone. You can access this tool from the Cisco Technical Support &
Documentation website by clicking the Tools & Resources link, clicking the All Tools (A-Z) tab, and
then choosing Cisco Product Identification Tool from the alphabetical list. This 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.
Tip Displaying and Searching on Cisco.com
If you suspect that the browser is not refreshing a web page, force the browser to update the web page
by holding down the Ctrl key while pressing F5.
To find technical information, narrow your search to look in technical documentation, not the entire
Cisco.com website. On the Cisco.com home page, click the Advanced Search link under the Search box
and then click the Technical Support & Documentation.radio button.
To provide feedback about the Cisco.com website or a particular technical document, click Contacts &
Feedback at the top of any Cisco.com web page.

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Obtaining Additional Publications and Information
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: [phone]
Australia: 1 800 805 227
EMEA: [phone]
USA: 1 800 553 2447
For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
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)—An existing 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 operations 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.
Severity 3 (S3)—Operational performance of the network is impaired while 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.
•The Cisco Product Quick Reference Guide is a handy, compact reference tool that includes brief
product overviews, key features, sample part numbers, and abbreviated technical specifications for
many Cisco products that are sold through channel partners. It is updated twice a year and includes
the latest Cisco channel product offerings. To order and find out more about the Cisco Product Quick
Reference Guide, go to this URL:
http://www.cisco.com/go/guide

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Obtaining Additional Publications and Information
•Cisco Marketplace provides a variety of Cisco books, reference guides, documentation, and logo
merchandise. Visit Cisco Marketplace, the company store, at this URL:
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 URL:
http://www.ciscopress.com
•Packet magazine is the magazine for Cisco networking professionals. 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 subscribe to Packet magazine at this URL:
http://www.cisco.com/packet
•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 URL:
http://www.cisco.com/ipj
•Networking products offered by Cisco Systems, as well as customer support services, can be
obtained at this URL:
http://www.cisco.com/en/US/products/index.html
•Networking Professionals Connection is an interactive website where networking professionals
share questions, suggestions, and information about networking products and technologies with
Cisco experts and other networking professionals. Join a discussion at this URL:
http://www.cisco.com/discuss/networking
•“What’s New in Cisco Documentation” is an online publication that provides information about the
latest documentation releases for Cisco products. Updated monthly, this online publication is
organized by product category to direct you quickly to the documentation for your products. You
can view the latest release of “What’s New in Cisco Documentation” at this URL:
http://www.cisco.com/univercd/cc/td/doc/abtunicd/136957.htm
•World-class networking training is available from Cisco. You can view current offerings at
this URL:
http://www.cisco.com/en/US/learning/index.html

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1
Introduction to Cisco IOS XR Software
This chapter introduces the routers that support Cisco IOS XR software and the user interfaces you can
use to manage routers that run Cisco IOS XR software.
Contents
This chapter contains the following sections:
•Supported Standalone System Configurations, page 1-1
•Cisco CRS-1 Multishelf System Overview, page 1-2
•Router Management Interfaces, page 1-6
•Selecting and Identifying the Designated Shelf Controller, page 1-7
•Connecting to the Router Through the Console Port, page 1-9
•Where to Go Next, page 1-14
Supported Standalone System Configurations
The Cisco IOS XR software runs on the following standalone systems:
•Cisco CRS-1 4-Slot Line Card Chassis (LCC)
•Cisco CRS-1 8-Slot LCC
•Cisco CRS-1 16-Slot LCC
•Cisco XR 12006 Router
•Cisco XR 12008 Router
•Cisco XR 12010 Router
•Cisco XR 12012 Router
•Cisco XR 12016 Router
•Cisco XR 12404 Router
•Cisco XR 12406 Router
•Cisco XR 12410 Router
•Cisco XR 12416 Router

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Chapter 1 Introduction to Cisco IOS XR Software
Cisco CRS-1 Multishelf System Overview
Note Many cards operate in both Cisco XR 12000 Series routers and in Cisco 12000 Series routers. For the
latest information on which cards are supported by the Cisco IOS XR software in Cisco XR 12000 Series
routers and Cisco 12000 Series routers, see Release Notes for Cisco IOS XR Software Release 3.4.
The Cisco IOS XR software also runs on Cisco CRS-1 Multishelf Systems, which are described in the
following section.
Cisco CRS-1 Multishelf System Overview
The multishelf system enables multiple Cisco CRS-1 LCCs to act as a single system. This release of the
multishelf system supports two 16-slot LCCs and one, two, or four fabric card chassis (FCCs) to provide
a total switching capacity of up to 1.28 terabits per second (Tbps). Two external Cisco Catalyst switches
provide control-plane connectivity between the chassis.
Figure 1-1 shows the single-FCC multishelf system, Figure 1-2 shows the two-FCC multishelf system,
and Figure 1-3 shows the four-FCC multishelf system.

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Chapter 1 Introduction to Cisco IOS XR Software
Cisco CRS-1 Multishelf System Overview
Figure 1-1 Single-FCC Multishelf System
1Cisco CRS-1 16-Slot Line Card Chassis (two
required)
3Cisco Catalyst 6509 Switch (two suggested)
2Cisco CRS-1 Fabric Card Chassis (one
required)
OUTPUT
FAIL
FAN
OK
INPUT
OK
OUTPUT
FAIL
FAN
OK
INPUT
OK
OUTPUT
FAIL
FAN
OK
INPUT
OK
OUTPUT
FAIL
FAN
OK
INPUT
OK
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Chapter 1 Introduction to Cisco IOS XR Software
Cisco CRS-1 Multishelf System Overview
Figure 1-2 Two-FCC Multishelf System
1Cisco CRS-1 16-Slot Line Card Chassis (two
required)
3Cisco Catalyst 6509 Switch (two suggested)
2Cisco CRS-1 Fabric Card Chassis (two
required)
OUTPUT
FAIL
FAN
OK
INPUT
OK
OUTPUT
FAIL
FAN
OK
INPUT
OK
OUTPUT
FAIL
FAN
OK
INPUT
OK
OUTPUT
FAIL
FAN
OK
INPUT
OK
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