Cisco Systems 7401Asr Users Manual

7401ASR to the manual 4db2ef22-214b-4462-84d4-9f523c22533b

: Cisco-Systems Cisco-Systems-7401Asr-Users-Manual-202675 cisco-systems-7401asr-users-manual-202675 cisco-systems pdf

Open the PDF directly: View PDF .
Page Count: 155

Download
Open PDF In Browser	View PDF

Cisco 7401ASR Installation and
Configuration Guide

Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100

Customer Order Number:
Text Part Number: OL-5419-01 B0

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT
SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE
OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
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 A digital device, pursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required
to correct the interference at their own expense.
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 installation.
Modifying the equipment without Cisco’s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital
devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television
communications at your own expense.
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, try to correct the 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 Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public
domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH
ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF
DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING,
WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO
OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

CCSP, the Cisco Square Bridge logo, Cisco Unity, Follow Me Browsing, FormShare, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live,
Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco
Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the Internet Generation,
Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness
Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect,
RateMUX, Registrar, ScriptShare, SlideCast, SMARTnet, StrataView Plus, SwitchProbe, TeleRouter, The Fastest Way to Increase Your Internet Quotient, TransPath, and VCO are
registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship
between Cisco and any other company. (0406R)

Cisco 7401ASR Installation and Configuration Guide
Copyright © 2004 Cisco Systems, Inc. All rights reserved

C O N T E N T S
Preface

ix

Audience

ix

Organization

x

Document Conventions
Warning Definition

x

xii

Terms and Acronyms

xv

Related Documentation

xvii

Obtaining Documentation xvii
Cisco.com xvii
Ordering Documentation xvii
Documentation Feedback

xviii

Obtaining Technical Assistance xviii
Cisco Technical Support Website xviii
Submitting a Service Request xix
Definitions of Service Request Severity xix
Obtaining Additional Publications and Information

CHAPTER

1

Overview and Parts Installation

1-1

Hardware Overview 1-1
Front View 1-2
LEDs 1-3
Rear View 1-4
System Board 1-4
System Management Functions

1-5

Checking the Shipping Container Contents
Installation Checklist

xx

1-5

1-6

Installing the CompactFlash Disk, GBIC, and Port Adapter 1-7
Installing and Removing the CompactFlash Disk 1-7
Installing and Removing the Gigabit Interface Converter 1-8
Installing and Removing a Port Adapter or Service Adapter 1-10
Replacing the SDRAM DIMM 1-11
Removing the Cover 1-12
Removing and Installing the SDRAM DIMM

1-13

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

iii

Contents

Replacing the Cover

CHAPTER

2

1-14

Rack-Mounting, Tabletop Installation, and Cabling
Preparing to Install the Cisco 7401ASR Router
Tools and Parts Required 2-2
Electrical Equipment Guidelines 2-3

2-1

2-1

Safety Guidelines 2-4
Preventing Electrostatic Discharge Damage
Electrostatic Discharge Prevention 2-4
Site Requirement Guidelines 2-4

2-4

Installing the Router 2-5
General Tabletop or Workbench Installation 2-5
Rack-Mounting a Cisco 7401ASR Router 2-6
Attaching the Chassis Rack-Mount and Cable-Management Brackets 2-7
Installing Rack-Mount Brackets on the Front of the Chassis 2-7
Attaching the Cable-Management Bracket 2-8
Installing Rack-Mount Brackets on the Rear of the Chassis 2-8
Installing the Chassis in the Rack 2-9
Two-Post Rack Installation 2-10
Four-Post Rack Installation 2-11
Attaching a Chassis Ground Connection
Connecting Port Adapter Cables

2-11

2-13

Connecting I/O Cables 2-14
Connecting Console and Auxiliary Port Cables 2-14
Connecting Native Gigabit Ethernet and Fast Ethernet/Ethernet Cables
Attaching the Fast Ethernet/Ethernet 10/100 Cables 2-16
Attaching the GBIC Interface Cables 2-17
Mode-Conditioning Patch Cord Description 2-19
Attaching the Alarm Port Cable

2-22

Using the Cable-Management Bracket
Connecting Power 2-23
Connecting AC-Input Power
Connecting DC-Input Power

CHAPTER

3

Starting and Configuring

2-16

2-22

2-23
2-24

3-1

Functional Overview 3-1
Chassis Slot and Logical Interface Numbering
MAC Address 3-3

3-1

Cisco 7401ASR Installation and Configuration Guide

iv

OL-5419-01 B0

Contents

Online Insertion and Removal 3-3
Environmental Monitoring and Reporting Functions
Environmental Monitoring 3-4
Reporting Functions 3-5
Fan Failures 3-8
Checking Conditions Prior to System Startup

3-4

3-9

Starting the System and Observing Initial Conditions

3-9

Configuring a Cisco 7401ASR Router 3-10
Performing a Basic Configuration Using AutoInstall 3-11
Performing a Basic Configuration Using the Setup Facility 3-11
Configuring Global Parameters 3-12
Configuring the Native Gigabit Ethernet and Fast Ethernet/Ethernet Interfaces
Configuring Port Adapter Interfaces 3-16
Performing a Basic Configuration Using Global Configuration Mode 3-20
Saving the Running Configuration to NVRAM 3-21
Checking the Running Configuration Settings 3-21
Performing Other Configuration Tasks

3-15

3-21

Replacing or Recovering a Lost Password 3-22
Overview of the Password Recovery Procedure 3-22
Details of the Password Recovery Procedure 3-23

CHAPTER

4

Viewing Your System Configuration

3-25

Performing Complex Configurations

3-27

Configuring the VPN Acceleration Module
Overview

4-1

4-1

Configuration Tasks 4-1
Using the EXEC Command Interpreter 4-2
Configuring IKE 4-2
Configuring IPSec 4-3
Creating Crypto Access Lists 4-3
Defining Transform Sets 4-4
Creating Crypto Map Entries 4-5
Verifying the Configuration 4-6

CHAPTER

5

Troubleshooting

5-1

Troubleshooting Overview

5-1

Problem Solving Using a Subsystems Approach
Identifying Startup Problems 5-3

5-2

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

v

Contents

Troubleshooting the Power Subsystem 5-4
Troubleshooting the Cooling Subsystem 5-5
Troubleshooting the I/O Subsystem 5-6
Troubleshooting the Processor Subsystem 5-6
Troubleshooting the Port Adapter or Service Adapter
Upgrading the Boot Helper (Boot Loader) Image
PXF Troubleshooting Information

APPENDIX

A

Specifications

5-6

5-7

5-8

A-1

System Specifications
Software Requirements
Processor Specifications

A-1
A-2
A-3

Memory Specifications and Configurations

A-3

Gigabit Ethernet GBIC Configurations and Port and Cabling Specifications
GBIC Cabling and Connection Equipment A-4
GBIC-SX or WS-G5484 A-5
GBIC-LX/LH or WS-G5486 A-5
GBIC-ZX or WS-G5487 A-6
Fast Ethernet/Ethernet RJ-45 Port Pinouts

A-6

Console and Auxiliary Port Signals and Pinouts
Alarm Port

B

PXF Information

A-8

A-9

Lithium Battery Caution

APPENDIX

A-4

A-9

B-1

Using show Commands B-1
Using the show version Command B-2
Using the show c7400 Command B-3
Using the show pxf Commands B-3
Using the show pxf accounting ? Command and Subcommands B-4
Using the show pxf crash Command B-5
Using the show pxf info Command B-6
Using the show pxf interface Command B-6
Using the show pxf feature ? Command and Subcommands B-6

APPENDIX

C

Using the CompactFlash Disk

C-1

Hardware and Software Requirements
Tools and Parts Required

C-1

C-1

Cisco 7401ASR Installation and Configuration Guide

vi

OL-5419-01 B0

Contents

Product Description

C-2

Compatibility Requirements C-3
System Memory and Software Image Functions and Interactions
Boot Environment Variables
Sample Upgrade Process

C-3

C-4
C-5

Working with a CompactFlash Disk C-5
Software Command Overview C-6
Using Software Commands C-7
Using the cd Command C-8
Using the show Command C-8
Using the pwd Command C-9
Using the dir Command C-9
Using the format Command C-9
Using the mkdir Command C-10
Using the rmdir Command C-11
Using the delete Command C-11
Enabling Booting from a CompactFlash Disk C-12
Making a CompactFlash Disk-Based Software Image the Bootable
Software Image C-13

APPENDIX

D

Configuration Register Information
Configuration Bit Meanings
Bits 0–3 D-2
Bit 6 D-3
Bit 7 D-3
Bit 8 D-4
Bit 10 and Bit 14 D-4
Bit 11 and Bit 12 D-4
Bit 13 D-4
Bit 15 D-5

D-1

D-1

Displaying the Configuration Register While Running Cisco IOS

D-5

Displaying the Configuration Register While Running ROM Monitor
Setting the Configuration Register While Running Cisco IOS

D-5

D-6

Setting the Configuration Register While Running ROM Monitor

D-6

INDEX

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

vii

Contents

Cisco 7401ASR Installation and Configuration Guide

viii

OL-5419-01 B0

Preface
This preface describes who should read the Cisco 7401ASR Installation and Configuration Guide, how
it is organized, and its document conventions.
The following sections are in this preface:
•

Audience, page ix

•

Organization, page x

•

Document Conventions, page x

•

Warning Definition, page xii

•

Terms and Acronyms, page xv

•

Related Documentation, page xvii

•

Obtaining Technical Assistance, page xviii

•

Obtaining Additional Publications and Information, page xx

Audience
To use this publication, you should be familiar not only with Cisco router hardware and cabling but also
with electronic circuitry and wiring practices. You should also have experience as an electronic or
electromechanical technician.
This installation guide explains the initial hardware installation and basic configuration procedures for
the Cisco 7401ASR router. It contains procedures for unpacking and installing the router hardware,
creating a basic software configuration file, and starting up the router. After completing the installation
and basic configuration procedures covered in this guide, you will then use the appropriate companion
publications to more completely configure your system.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

ix

Preface
Organization

Organization
The major sections of this guide are as follows:
Chapter

Title

Description

1

Overview and Parts Installation

This chapter provides a hardware overview as well as preparation and
installation instructions for a Gigabit Interface Converter (GBIC),
CompactFlash Disk, and port adapter or service adapter.

2

Rack-Mounting, Tabletop
Installation, and Cabling

This chapter provides preparation and installation instructions for
installing the chassis in a rack and for attaching cables.

3

Starting and Configuring

This chapter provides a functional overview of the system, as well as
startup and configuration instructions.

4

Configuring the VPN Acceleration
Module

This chapter provides configuration instructions for the VPN
Acceleration Module (VAM).

5

Troubleshooting

This chapter provides basic system startup troubleshooting information.

A

Specifications

This appendix provides system specifications as well as port and cabling
pinouts and specifications.

B

PXF Information

This appendix contains information about enabling PXF features, and
PXF show commands.

C

Using the CompactFlash Disk

This appendix contains information about using the CompactFlash Disk.

D

Configuration Register Information

This appendix contains configuration register information.

Document Conventions
Command descriptions use the following conventions:

boldface font

Commands and keywords are in boldface.

italic font

Arguments for which you supply values are in italics.

[ ]

Elements in square brackets are optional.

{x|y|z}

Alternative keywords are grouped in braces and separated by vertical bars.

[x|y|z]

Optional alternative keywords are grouped in brackets and separated by
vertical bars.

string

A nonquoted set of characters. Do not use quotation marks around the string,
or the string will include the quotation marks.

Screen examples use the following conventions:

screen

font

boldface screen

italic screen font

Terminal sessions and information the system displays are in
font

Information you must enter is in boldface

screen

screen

font.

font.

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

Cisco 7401ASR Installation and Configuration Guide

x

OL-5419-01 B0

Preface
Document Conventions

^

The symbol ^ represents the key labeled Control—for example, the key
combination ^D in a screen display means hold down the Control key while
you press the D key.

< >

Nonprinting characters, such as passwords, are in angle brackets.

[ ]

Default responses to system prompts are in square brackets.

!, #

An exclamation point (!) or a pound sign (#) at the beginning of a line of code
indicates a comment line.

Notes, cautionary statements, and safety warnings use these conventions:

Note

Caution

Means reader take note. Notes contain helpful suggestions or references to materials not contained in
this manual.

Means reader be careful. You are capable of doing something that might result in equipment damage or
loss of data.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

xi

Preface
Warning Definition

Warning Definition
Warning

IMPORTANT SAFETY INSTRUCTIONS
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 translated safety warnings that accompanied this device.
Note: SAVE THESE INSTRUCTIONS
Note: This documentation is to be used in conjunction with the specific product installation guide
that shipped with the product. Please refer to the Installation Guide, Configuration Guide, or other
enclosed additional documentation for further details.

Waarschuwing

BELANGRIJKE VEILIGHEIDSINSTRUCTIES
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 de standaard
praktijken om ongelukken te voorkomen. Voor een vertaling van de waarschuwingen die in deze
publicatie verschijnen, dient u de vertaalde veiligheidswaarschuwingen te raadplegen die bij dit
apparaat worden geleverd.
Opmerking BEWAAR DEZE INSTRUCTIES.
Opmerking Deze documentatie dient gebruikt te worden in combinatie met de
installatiehandleiding voor het specifieke product die bij het product wordt geleverd. Raadpleeg de
installatiehandleiding, configuratiehandleiding of andere verdere ingesloten documentatie voor
meer informatie.

Varoitus

TÄRKEITÄ TURVALLISUUTEEN LIITTYVIÄ OHJEITA
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 asiakirjassa esitettyjen varoitusten
käännökset löydät laitteen mukana toimitetuista ohjeista.
Huomautus SÄILYTÄ NÄMÄ OHJEET
Huomautus Tämä asiakirja on tarkoitettu käytettäväksi yhdessä tuotteen mukana tulleen
asennusoppaan kanssa. Katso lisätietoja asennusoppaasta, kokoonpano-oppaasta ja muista
mukana toimitetuista asiakirjoista.

Cisco 7401ASR Installation and Configuration Guide

xii

OL-5419-01 B0

Preface
Warning Definition

Attention

IMPORTANTES INFORMATIONS DE SÉCURITÉ
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer
des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient
des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment
utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements
figurant dans cette publication, consultez les consignes de sécurité traduites qui accompagnent cet
appareil.
Remarque CONSERVEZ CES INFORMATIONS
Remarque Cette documentation doit être utilisée avec le guide spécifique d'installation du produit
qui accompagne ce dernier. Veuillez vous reporter au Guide d'installation, au Guide de
configuration, ou à toute autre documentation jointe pour de plus amples renseignements.

Warnung

WICHTIGE SICHERHEITSANWEISUNGEN
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer
Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie
sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur
Vermeidung von Unfällen bewusst. Übersetzungen der in dieser Veröffentlichung enthaltenen
Warnhinweise sind im Lieferumfang des Geräts enthalten.
Hinweis BEWAHREN SIE DIESE SICHERHEITSANWEISUNGEN AUF
Hinweis Dieses Handbuch ist zum Gebrauch in Verbindung mit dem Installationshandbuch für Ihr
Gerät bestimmt, das dem Gerät beiliegt. Entnehmen Sie bitte alle weiteren Informationen dem
Handbuch (Installations- oder Konfigurationshandbuch o. Ä.) für Ihr spezifisches Gerät.

Figyelem!

FONTOS BIZTONSÁGI ELÕÍRÁSOK
Ez a figyelmezetõ jel veszélyre utal. Sérülésveszélyt rejtõ helyzetben van. Mielõtt bármely
berendezésen munkát végezte, legyen figyelemmel az elektromos áramkörök okozta kockázatokra,
és ismerkedjen meg a szokásos balesetvédelmi eljárásokkal. A kiadványban szereplõ
figyelmeztetések fordítása a készülékhez mellékelt biztonsági figyelmeztetések között található.
Megjegyzés ÕRIZZE MEG EZEKET AZ UTASÍTÁSOKAT!
Megjegyzés Ezt a dokumentációt a készülékhez mellékelt üzembe helyezési útmutatóval együtt kell
használni. További tudnivalók a mellékelt Üzembe helyezési útmutatóban (Installation Guide),
Konfigurációs útmutatóban (Configuration Guide) vagy más dokumentumban találhatók.

Avvertenza

IMPORTANTI ISTRUZIONI SULLA SICUREZZA
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli
relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Per le
traduzioni delle avvertenze riportate in questo documento, vedere le avvertenze di sicurezza che
accompagnano questo dispositivo.
Nota CONSERVARE QUESTE ISTRUZIONI
Nota La presente documentazione va usata congiuntamente alla guida di installazione specifica
spedita con il prodotto. Per maggiori informazioni, consultare la Guida all'installazione, la Guida
alla configurazione o altra documentazione acclusa.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

xiii

Preface
Warning Definition

Advarsel

VIKTIGE SIKKERHETSINSTRUKSJONER
Dette varselssymbolet betyr fare. Du befinner deg i en situasjon som kan forårsake personskade.
Før du utfører arbeid med utstyret, bør du være oppmerksom på farene som er forbundet med
elektriske kretssystemer, og du bør være kjent med vanlig praksis for å unngå ulykker. For å se
oversettelser av advarslene i denne publikasjonen, se de oversatte sikkerhetsvarslene som følger
med denne enheten.
Merk TA VARE PÅ DISSE INSTRUKSJONENE
Merk Denne dokumentasjonen skal brukes i forbindelse med den spesifikke
installasjonsveiledningen som fulgte med produktet. Vennligst se installasjonsveiledningen,
konfigureringsveiledningen eller annen vedlagt tilleggsdokumentasjon for detaljer.

Aviso

INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. O utilizador encontra-se numa situação que poderá ser
causadora de lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha em
atenção os perigos envolvidos no manuseamento de circuitos eléctricos e familiarize-se com as
práticas habituais de prevenção de acidentes. Para ver traduções dos avisos incluídos nesta
publicação, consulte os avisos de segurança traduzidos que acompanham este dispositivo.
Nota GUARDE ESTAS INSTRUÇÕES
Nota Esta documentação destina-se a ser utilizada em conjunto com o manual de instalação
incluído com o produto específico. Consulte o manual de instalação, o manual de configuração ou
outra documentação adicional inclusa, para obter mais informações.

¡Advertencia!

INSTRUCCIONES IMPORTANTES DE SEGURIDAD
Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los
procedimientos estándar de prevención de accidentes. Vea las traducciones de las advertencias
que acompañan a este dispositivo.
Nota GUARDE ESTAS INSTRUCCIONES
Nota Esta documentación está pensada para ser utilizada con la guía de instalación del producto
que lo acompaña. Si necesita más detalles, consulte la Guía de instalación, la Guía de
configuración o cualquier documentación adicional adjunta.

Varning!

VIKTIGA SÄKERHETSANVISNINGAR
Denna varningssignal signalerar 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 vanliga förfaranden för att förebygga olyckor. Se översättningarna av de
varningsmeddelanden som finns i denna publikation, och se de översatta säkerhetsvarningarna som
medföljer denna anordning.
OBS! SPARA DESSA ANVISNINGAR
OBS! Denna dokumentation ska användas i samband med den specifika
produktinstallationshandbok som medföljde produkten. Se installationshandboken,
konfigurationshandboken eller annan bifogad ytterligare dokumentation för närmare detaljer.

Cisco 7401ASR Installation and Configuration Guide

xiv

OL-5419-01 B0

Preface
Terms and Acronyms

Terms and Acronyms
To fully understand the content of this user guide, you should be familiar with the following terms and
acronyms:
•

Cache—Memory with fast access and small capacity used to temporarily store recently accessed
data; found either incorporated into the processor or near it.

•

DCE—data communications equipment

•

DMA—direct memory access

•

DTE—data terminal equipment

•

EPROM—erasable programmable read-only memory

•

EEPROM—electrically erasable programmable read-only memory

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

xv

Preface
Terms and Acronyms

•

GB—gigabit

•

GBIC—Gigabit Interface Converter

•

Gbps—gigabits per second

•

Instruction and data cache—Instructions to the processor and data on which the instructions work.

•

Integrated cache—Cache that is built into the processor; sometimes referred to as internal cache.
Cache memory that is physically located outside the processor is not integrated, and is sometimes
referred to as external cache.

•

MB—megabyte

•

Mbps—megabits per second

•

NVRAM—nonvolatile random-access memory

•

OIR—online insertion and removal

•

PCI—Peripheral Component Interconnect

•

Primary, secondary, tertiary cache—Hierarchical cache memory storage based on the proximity of
the cache to the core of the processor. Primary cache is closest to the processor core and has the
fastest access. Secondary cache has slower access than primary cache, but faster access than tertiary
cache.

•

PXF—Parallel eXpress Forwarding: A secondary processor used to accelerate Cisco IOS services

•

RFI—radio frequency interference

•

RISC—reduced instruction set computing

•

SDRAM—synchronous dynamic random-access memory

•

SNMP—Simple Network Management Protocol

•

TFTP—Trivial File Transfer Protocol

•

Unified cache—Instruction cache and data cache are combined. For example, a processor may have
primary cache with separate instruction and data cache memory, but unified secondary cache.

•

VAM—VPN acceleration module

•

VPN—Virtual Private Network

Cisco 7401ASR Installation and Configuration Guide

xvi

OL-5419-01 B0

Preface
Related Documentation

Related Documentation
Your Cisco 7401ASR router and the Cisco IOS software running on it contain extensive features and
functionality, which are documented in the following resources:
•

Cisco Documentation CD-ROM package (See the “Obtaining Documentation” section on
page xvii.)

•

Cisco.com (See the “Cisco.com” section on page xvii.)

•

Cisco 7401ASR Router Documentation Master Index provides a list of related documents and links
at: http://www.cisco.com/univercd/cc/td/doc/product/core/7401/ol3514.htm

•

Cisco 7401ASR Router Port Adapter Documentation Master Index provides a list of related
documents and links at: http://www.cisco.com/univercd/cc/td/doc/product/core/7401/ol3533.htm

•

Cisco 7401ASR Router Troubleshooting Master Index provides links to TAC Tech Notes,
troubleshooting documentation, and troubleshooting tools and utilities at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7401/ol3517.htm

•

Cisco IOS software documentation contains Cisco IOS software configuration information and
support. See the modular configuration and modular command reference publications in the set that
corresponds to the software release installed on your Cisco hardware.

•

Cisco IOS Enterprise VPN Configuration Guide at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7100/swcg/index.htm

•

Cisco IOS Security Configuration Guide at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fsecur_c/index.htm

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

Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

xvii

Preface
Documentation Feedback

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 1 800 553-NETS (6387).

Documentation Feedback
You can send comments about technical documentation to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front cover of your
document or by writing to the following address:
Cisco Systems
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-winning technical assistance. The Cisco Technical
Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical
Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service
contract, contact your reseller.

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

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
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

Cisco 7401ASR Installation and Configuration Guide

xviii

OL-5419-01 B0

Preface
Obtaining Technical Assistance

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.

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 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 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 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

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.
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.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

xix

Preface
Obtaining Additional Publications and Information

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, 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

•

Packet 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 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 private internets and
intranets. You can access the Internet Protocol Journal at this URL:
http://www.cisco.com/ipj

•

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

Cisco 7401ASR Installation and Configuration Guide

xx

OL-5419-01 B0

C H A P T E R

1

Overview and Parts Installation
The Cisco 7401ASR router provides application-specific features for broadband subscriber aggregation
and network application services with high processing performance.
This chapter provides a quick hardware overview and options installation instructions for the
Cisco 7401ASR router. For functional information see Chapter 3, “Starting and Configuring,” the
“Functional Overview” section on page 3-1. For system specifications and port and cabling
specifications, see Appendix A, “Specifications.”
The following sections describe router hardware and options installation:

Warning

•

Hardware Overview, page 1-1

•

Checking the Shipping Container Contents, page 1-5

•

Installation Checklist, page 1-6

•

Installing the CompactFlash Disk, GBIC, and Port Adapter, page 1-7

•

Replacing the SDRAM DIMM, page 1-11

Before you install, operate, or service the system, read the Site Preparation and Safety Guide. This
guide contains important safety information you should know before working with the system.

Hardware Overview
The Cisco 7401ASR router supports the following features:
•

Online insertion and removal (OIR)—Allows you to add, replace, or remove port adapters without
interrupting the system.

•

Environmental monitoring and reporting functions—Allow you to maintain normal system
operation by resolving adverse environmental conditions prior to loss of operation.

•

Downloadable software—Allows you to load new images into Flash memory remotely, without
having to physically access the router, for fast, reliable upgrades.

•

Small form-factor—One rack-unit (RU) high with stacking capability:
1.72 in. x 17.3 in. x 11.80 in. (4.37 cm x 43.9 cm x 30 cm). The weight is approximately 10.5 lbs
(4.76 kg).

•

Front-to-back airflow—Allows you to mount the router from either front or back into two post or
19-inch racks and 21–23-inch four-post racks.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-1

Chapter 1

Overview and Parts Installation

Hardware Overview

The following sections provide illustrations and a brief overview of the Cisco 7401ASR router:
•

Front View, page 1-2

•

LEDs, page 1-3

•

Rear View, page 1-4

•

System Board, page 1-4

•

System Management Functions, page 1-5

Front View
Figure 1-1

EN

AB

LE

Cisco 7401ASR Router—Front View

D

S IER
LL R RM
CE CAR LA
RX RX RX A

4

TX
RX

ENHANCED
ATM

5

7

8

10 11

13

1
3
6

9

12

57606

2

1

Port adapter slot (with installed port adapter) 8

2

Port adapter latch

9

3

GBIC port 0

10 Ground for ESD wrist strap banana jack

4

FE port 0

11 Power switch

5

FE port 1

12 CompactFlash Disk slot

6

GBIC port 1

13 Power connector

7

Auxiliary port

Console port
Alarm port

The Cisco 7401ASR router supports:
•

Two native Ethernet interfaces—Each interface has two physical ports, a Gigabit Ethernet
(1000-Mbps) port that uses a Gigabit Interface Converter (GBIC) and a Fast Ethernet/Ethernet
(10/100-Mbps) port with an RJ-45 connector. Any two of the four ports are available at any one time.

•

Both 25-MHz and 50-MHz port adapter operation.

•

A 64- or 128-MB CompactFlash Disk.

•

A single power supply that is available in four options: AC, single –24V DC, single –48V DC, and
dual –48V DC.

Cisco 7401ASR Installation and Configuration Guide

1-2

OL-5419-01 B0

Chapter 1

Overview and Parts Installation
Hardware Overview

LEDs
LED information is in Figure 1-2 and the table below Figure 1-2.
Figure 1-2

LEDs on the Cisco 7401ASR Router

2

5

3

6

4

7

57605

1

9

10

8
In the Power Up
state, the LED is

LED flashes when there is
traffic

No. LED Label

LED

Color

1

GBIC 0 ENABLE

GBIC 0 ENABLE

Green On

No, remains constantly on

2

LINK

GBIC LINK 0

Green —

Yes

3

FE 0 LINK

FE 0 LINK

Green —

Yes

4

100 Mbps

FE 0

Green On

No, remains constantly on

5

GBIC 1 ENABLE

GBIC 1 ENABLE

Green —

No, remains constantly on

6

LINK

GBIC LINK 1

Green On

Yes

7

FE 1 LINK

FE 1 LINK

Green —

Yes

8

100 Mbps

FE 1

Green On

No, remains constantly on

9

STATUS

System Status

Green On

No, remains constantly on

10

COMPACT
FLASH

CompactFlash
Disk

Green On, if the
CompactFlash
Disk is inserted
and functioning

No, remains constantly on
if the CompactFlash Disk
is inserted and functioning

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-3

Chapter 1

Overview and Parts Installation

Hardware Overview

Rear View
Cisco 7401ASR Router—Rear View

50530

Figure 1-3

1
2
1

Fan vent

2

Grounding connector

The rear of the Cisco 7401ASR router has five fan airflow vents and the chassis grounding connector
that provides a chassis ground connection for ESD equipment or a two-hole grounding lug. (See
Figure 1-3.)
Five internal fans draw cooling air into the chassis and across internal components to maintain an
acceptable operating temperature. (See Figure 1-3.) The five fans are located at the rear of the chassis.

System Board
Internally, the system board contains the following components:
•

SDRAM memory that is available in three options: 128, 256, or 512 MB DIMM

•

Processors
– Reduced instruction set computing (RISC) RM7000 microprocessor that operates at an internal

clock speed of 375 MHz. The RM7000 processor maintains and executes the system
management functions for the Cisco 7401ASR router. The processor also performs some
memory and environmental monitoring functions.
– The Parallel eXpress Forwarding (PXF) processor enables parallel IP multipacket processing

functions, working with the Route Processor to provide accelerated packet switching, as well as
accelerated IP Layer 3 feature processing.
•

System controller
The system controller provides hardware logic to interconnect the processors, SDRAM, and the PCI
buses. The Cisco 7401ASR router has one system controller that provides processor access to the
two PCI buses. The system controller also allows the port adapter access to SDRAM.

•

Cache memory
The processor has three levels of cache: primary and secondary cache that are internal to the
microprocessor with secondary unified cache for data and instruction, and tertiary, 2-MB external
cache.

•

Two environmental sensors for monitoring the internal temperature of the chassis

•

Boot ROM for storing sufficient code for booting the Cisco IOS software

Cisco 7401ASR Installation and Configuration Guide

1-4

OL-5419-01 B0

Chapter 1

Overview and Parts Installation
Checking the Shipping Container Contents

System Management Functions
The Cisco 7401ASR processor performs the following system management functions:

Note

•

Sending and receiving routing protocol updates

•

Managing tables, caches, and buffers

•

Monitoring interface and environmental status

•

Providing Simple Network Management Protocol (SNMP) management through the console and
Telnet interface

•

Accounting for and switching of data traffic

•

Booting and reloading images

•

Managing the port adapter (including recognition and initialization during online insertion and
removal)

For a chassis footprint, additional dimensions, and clearance requirements for the Cisco 7401ASR
router, see the “Preparing to Install the Cisco 7401ASR Router” section on page 2-1 in Chapter 2,
“Rack-Mounting, Tabletop Installation, and Cabling.”
The Cisco 7401ASR router supports multiprotocol, multimedia routing and bridging with a wide variety
of protocols and port adapters.

Checking the Shipping Container Contents
Use the Cisco 7401ASR Components List to check the contents of the Cisco 7401ASR router shipping
container. Do not discard the shipping container. You need the container if you move or ship the Cisco
7401ASR router in the future.
Table 1-1

Cisco 7401ASR Components List

Component

Description

Received

Chassis

Cisco 7401ASR chassis configured with an AC or DC power supply, a port adapter
filler plate, and a CompactFlash Disk

Accessories:

The following accessories might arrive in separate shipping containers:

Rack-mount and
Two rack-mount brackets, one cable-management bracket,
cable-management four 12-24 x 0.5-in. screws to secure the rack-mount brackets to the chassis, four 8-18
kit
x .37-in. screws to secure the rack-mount brackets to a 19-inch rack, four 8 x .375-in.
screws to secure the rack-mount brackets to a 21–23-inch rack, and one M4 x 20-mm
• Power cables
screw to attach the cable-management bracket to the rack-mount bracket
• Documentation
An AC power cable, if an AC power supply was ordered
•

If ordered, router hardware and software documentation set and the Cisco
Documentation CD-ROM package1
Optional Equipment

Examples: Network interface cables, transceivers, special connectors

1. Titles and quantities of documents will vary. You must order the type and quantity of documentation sets when you order the hardware.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-5

Chapter 1

Overview and Parts Installation

Installation Checklist

Note

We no longer ship the entire router documentation set automatically with each system. You must
specifically order the documentation as part of the sales order. If you ordered documentation and did not
receive it, we will ship the documents to you within 24 hours. To order documents, contact a customer
service representative.

Installation Checklist
This section assumes you will be installing the CompactFlash Disk, Gigabit Interface Converter (GBIC),
and port adapter or service adapter before powering on the router, or before installing it in a rack and
powering it on. For complete site requirement information, see Chapter 2, “Rack-Mounting, Tabletop
Installation, and Cabling,” the “Site Requirement Guidelines” section on page 2-4.
To assist you with your installation and to provide a historical record of what was done by whom,
photocopy the Cisco 7401ASR Router Installation Checklist, Table 1-2 on page 1-6. Indicate when each
procedure or verification is completed. When the checklist is completed, place it in your site log along
with the other records for your new router.
Table 1-2

Cisco 7401ASR Router Installation Checklist

Verified
By

Task

Date

Date router received
Router and all accessories unpacked
Types and numbers of interfaces verified
Safety recommendations and guidelines reviewed
Installation Checklist copied
Site log established and background information entered
Site power voltages verified
Site environmental specifications verified
Required passwords, IP addresses, device names, and so on, available
Required tools available
Network connection equipment available
Router mounted in rack (optional)
Cable-management bracket installed (optional but recommended)
AC power cable(s) connected to AC source(s) and router
DC power cable(s) connected to DC source(s) and router
Network interface cables and devices connected
ASCII terminal attached to console port
Console port set for 9600 baud, 8 data bits, no parity, and 2 stop bits (9600 8N2)
System power turned on
System boot complete (STATUS LED is on)

Cisco 7401ASR Installation and Configuration Guide

1-6

OL-5419-01 B0

Chapter 1

Overview and Parts Installation
Installing the CompactFlash Disk, GBIC, and Port Adapter

Table 1-2

Cisco 7401ASR Router Installation Checklist

Verified
By

Task

Date

I/O ports and port adapter are operational (see Figure 1-2 on page 1-3 for specific LED information)
Correct hardware configuration displayed after system banner appears

Installing the CompactFlash Disk, GBIC, and Port Adapter
You may have ordered a CompactFlash Disk, Gigabit Interface Converter (GBIC), and one of a variety
of port adapters or service adapter with your Cisco 7401ASR router. You must install the CompactFlash
Disk, GBIC, and port adapter service adapter. Use the installation instructions in the following sections
to install or remove one of these optional parts:
•

Installing and Removing the CompactFlash Disk, page 1-7

•

Installing and Removing the Gigabit Interface Converter, page 1-8

•

Installing and Removing a Port Adapter or Service Adapter, page 1-10

Installing and Removing the CompactFlash Disk
Figure 1-4

Installing and Removing the CompactFlash Disk

2

57604

1

1

CompactFlash Disk insertion

2

CompactFlash Disk removal

Insert the CompactFlash Disk in the CompactFlash Disk slot (1) with the label with the vendor name and
memory size facing up. It protrudes when completely seated. To remove the CompactFlash Disk, grasp
it and pull it from the slot (2).
The CompactFlash Disk is keyed to prevent it being inserted incorrectly.

Note

Only the CompactFlash Disk is supported in a Cisco 7401ASR router.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-7

Chapter 1

Overview and Parts Installation

Installing the CompactFlash Disk, GBIC, and Port Adapter

Information about CompactFlashDisks:
•

The larger the CompactFlash Disk size, the longer the system boot time.

•

The CompactFlash Disk supports online insertion and removal (OIR).

•

Use the CompactFlash Disk to store your configuration files and Cisco IOS software image.

For complete information about using a CompactFlash Disk, see Appendix C, “Using the CompactFlash
Disk.”
For further installation procedures including rack-mounting or general workbench installation, see
Chapter 2, “Rack-Mounting, Tabletop Installation, and Cabling.”

Installing and Removing the Gigabit Interface Converter
For ease of installation, insert the Gigabit Ethernet Gigabit Interface Converter (GBIC) in the router
while it is powered down and before placing it in a rack. For complete GBIC installation instructions,
see the “Attaching the GBIC Interface Cables” section on page 2-17 and see the “Gigabit Ethernet GBIC
Configurations and Port and Cabling Specifications” section on page A-4.
Gigabit Interface Converter—GBIC
57018

Figure 1-5

1
1

2

Receive

2

Transmit

The Gigabit Ethernet Gigabit Interface Converter (GBIC) port is a 1000-Mbps optical interface in the
form of an SC-type duplex port that supports IEEE 802.3z interfaces compliant with the 1000BASEX
standard. Gigabit Interface Converter models WS-5484 or GBIC-SX, WS-G5486 or GBIC-LX/LH, and
WS-G5487 or GBIC-ZX are supported in the Cisco 7401ASR router.

Note

The GBIC must be installed before you connect the cables to it.
•

You can install and remove GBICs with power on to the system.

•

Disconnect all cables before removing or installing a GBIC. We strongly recommend that you do
not install or remove the GBIC with optical fiber cables attached to it.

•

GBICs are keyed to prevent incorrect insertion.

Warning

Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is
connected, avoid exposure to laser radiation and do not stare into open apertures.

Warning

Class 1 laser product.

Cisco 7401ASR Installation and Configuration Guide

1-8

OL-5419-01 B0

Chapter 1

Overview and Parts Installation
Installing the CompactFlash Disk, GBIC, and Port Adapter

Warning

Class 1 LED product.
Figure 1-6

Inserting a GBIC into the Cisco 7401ASR Gigabit Ethernet Slot 0

3
2

4

57603

5

1
1

Gigabit Interface Converter (GBIC)

4

GBIC port 1

2

Alignment groove

5

Plug

3

GBIC port 0

Use the following procedure to install a GBIC:
Step 1

Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.

Step 2

Locate the label on the GBIC and turn the GBIC so the label is on top and the alignment groove is
down.

Note

The GBIC is keyed so that it cannot be inserted incorrectly.

Step 3

Insert the GBIC into GBIC slot 0 or 1. The tabs on either side of the GBIC snap into place when you
have completely and properly inserted the GBIC.

Step 4

Repeat Step 2 and Step 3 if you are inserting a second GBIC.

Note

Do not remove the plug from the GBIC optical bores until you are ready to install the network interface
optical fiber cable. Save the plug for future use.

This completes the GBIC installation procedure.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-9

Chapter 1

Overview and Parts Installation

Installing the CompactFlash Disk, GBIC, and Port Adapter

Installing and Removing a Port Adapter or Service Adapter
The information in this section also applies to service adapters. For information about configuring a port
adapter, see the port adapter documentation at:
http://www.cisco.com/univercd/cc/td/doc/product/core/7200vx/portadpt/index.htm.

Warning

When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the
card. Some platforms have an ESD connector for attaching the wrist strap. Do not directly touch the
midplane or backplane with your hand or any metal tool, or you could shock yourself.

Before removing any port adapter, gracefully shut down the interface so that thre is no traffic running
through the port adapter when it is removed. Removing a port adapter when traffic is flowing through
the ports can cause system disruption.
The Cisco 7401ASR router supports OIR of the port adapter. However, if you choose to power off the
router to remove or install a port adapter, turn the power switch to the off position and then remove the
power cable. After you have replaced the port adapter or inserted afiller panel, replace the power cable
and then turn the power switch to the on position.

Note

After powering off the router, wait at least 30 seconds before powering it on again.
Follow these steps for inserting and securing a port adapter:

Step 1

Attach an ESD wrist strap between you and an unpainted chassis surface. For wrist straps with a banana
jack, insert the banana jack in its grounding hole located on the front of the chassis, near the STATUS
LED and power switch.
Figure 1-7

Installing a Port Adapter or Service Adapter

3

R

TX
RX

ENHANCED

ATM

57579

D
R
LE LS RIE M
AB EL AR AR
EN RX C RX C X AL

1
2
4

1

Port adapter latch

3

Port adapter slot guide

2

Port adapter

4

Ground for ESD wrist strap banana jack

Cisco 7401ASR Installation and Configuration Guide

1-10

OL-5419-01 B0

Chapter 1

Overview and Parts Installation
Replacing the SDRAM DIMM

Step 2

Using a Phillips screwdriver, loosen the screw of the port adapter latch, and rotate the port adapter latch
until it clears the faceplate of the port adapter. The latch can rotate 360o.

Step 3

Pull the port adapter about halfway out of the port adapter slot. (If you remove a port adapter filler plate,
keep the blank port adapter for use in the router if you should ever remove the port adapter. The port
adapter slot must always be filled.)

Step 4

With the port adapter halfway out of the slot, disconnect all cables from the port adapter. After
disconnecting the cables, pull the port adapter from the chassis slot.

Step 5

Locate the port adapter slot guides inside the Cisco 7401ASR router. They are near the top, and are
recessed about one-half inch.

Caution

Note

The port adapter must slide into the slot guides under the chassis lid. Do not allow the port adapter
components to come in contact with the system board or the port adapter could be damaged.

If it is easier to attach the port adapter cables with the port adapter inserted halfway, attach the cables
before seating the port adapter and securing the port adapter latch.

Step 6

Locate the port adapter slot guides. Carefully slide the port adapter into the port adapter slot and seat it.
When installed, the port adapter input/output panel should be flush with the face of the router.

Step 7

Rotate the port adapter latch to the upright locked position and use a Phillips screwdriver to tighten the
latch screw. Loosen the latch screw, if needed, to be able to rotate the latch over the port adapter. Then
tighten the latch screw.

This completes the port adapter installation procedure.

Caution

To ensure the proper flow of cooling air across the internal components, make sure a port adapter filler
panel is installed in the unoccupied port adapter slot.
For further installation procedures, see Chapter 2, “Rack-Mounting, Tabletop Installation, and Cabling.”

Replacing the SDRAM DIMM
The information in this section provides instructions for replacing the SDRAM DIMM and is included
for future use. The memory configuration you ordered is installed in the Cisco 7401ASR router.

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Warning

Before working on a chassis or working near power supplies, unplug the power cord on AC units;
disconnect the power at the circuit breaker on DC units.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-11

Chapter 1

Overview and Parts Installation

Replacing the SDRAM DIMM

Warning

When performing the following procedures, wear a grounding wrist strap to avoid ESD damage to the
card. Some platforms have an ESD connector for attaching the wrist strap. Do not directly touch the
system board with your hand or any metal tool, or you could shock yourself.

To replace or upgrade the SDRAM DIMM, follow these instructions:

Removing the Cover
The Cisco 7401ASR router cover fits tightly on the chassis. Follow these instructions to remove the
cover:
Step 1

Power off the router by turning the power switch to the off position.

After powering off the router, wait at least 30 seconds before powering it on again.

Note
Step 2

Remove any cables from the Cisco 7401ASR router, including the power cables. For AC power supplies,
unplug the AC power cord from the power outlet. For DC power supplies, to ensure that all power is off,
locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to
the off position, and tape the switch handle of the circuit breaker in the off position.
Figure 1-8

Removing the Screws and Releasing the Cover

1
2

D
R
LE S RIE M
AB ELL AR R
EN RX C RX C X ALA

TX
RX

ENHANCED

ATM

66448

R

1

Cover screws

2

Cover removal slot and flatblade screwdriver

Step 3

Remove the Cisco 7401ASR router from the rack, if it is rack-mounted.

Step 4

Remove the four screws holding the cover to the chassis.

Note

If needed, use a Phillips recess flat-head screw, M3.5 x 6-mm long, type B thread, steel with
black zinc coating, as a replacement.

Step 5

Insert a flat-blade screwdriver in each of the side cover removal slots.

Step 6

Push the screwdriver blade against the cover latches to release the cover, as shown in Figure 1-8. The
cover moves forward about one-quarter inch.

Cisco 7401ASR Installation and Configuration Guide

1-12

OL-5419-01 B0

Chapter 1

Overview and Parts Installation
Replacing the SDRAM DIMM

Figure 1-9

AB

LE

D

S IE R
LL R RM
C E C AR LA
RX RX RX A

TX
RX

ENHANCED

ATM

66449

EN

Removing the Cover

Step 7

Slide the cover forward about one-half inch and then lift it from the chassis.

Removing and Installing the SDRAM DIMM
Follow these instructions to remove and replace the SDRAM DIMM:
Figure 1-10 Removing and Replacing the DIMM

3

1
1

Spring latch on DIMM socket

2

DIMM

66284

2

3

Notch

Step 1

Attach an ESD-preventative wrist strap between you and an unpainted router surface.

Step 2

Locate the DIMM.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

1-13

Chapter 1

Overview and Parts Installation

Replacing the SDRAM DIMM

Step 3

Press both spring latches outward to release the DIMM. See Figure 1-10.

Step 4

Gently pull the DIMM free from the DIMM socket, taking care not to touch the pins that insert into the
socket. Place the DIMM in an anti-static bag.

Caution

Forcing the DIMM into the socket can damage the DIMM. Use the notches on the DIMM to align the
DIMM with the DIMM socket before inserting it.

Step 5

Locate the notches and align the DIMM with the DIMM socket.

Step 6

Gently insert the new DIMM, taking care not to damage the pins on the edge of the DIMM.

Step 7

Press the spring latches to lock the DIMM in place.

Replacing the Cover
Step 1

Replace the cover; lower it onto the chassis and push the cover toward the rear of the chassis to lock it
in place.

Step 2

Replace and tighten the four cover screws.

Replace the Cisco 7401ASR router in the rack. See Chapter 2, “Rack-Mounting, Tabletop Installation,
and Cabling” for instructions.
For memory specifications and configurations, see Appendix A, “Specifications” the “Memory
Specifications and Configurations” section on page A-3.

Cisco 7401ASR Installation and Configuration Guide

1-14

OL-5419-01 B0

C H A P T E R

2

Rack-Mounting, Tabletop Installation, and
Cabling
This chapter explains how to install a Cisco 7401ASR router in a rack in a general tabletop or workbench
installation, how to attach cables, and how to power on the router.
This chapter contains the following sections:
•

Preparing to Install the Cisco 7401ASR Router, page 2-1

•

Installing the Router, page 2-5

•

Attaching a Chassis Ground Connection, page 2-11

•

Connecting Port Adapter Cables, page 2-13

•

Connecting I/O Cables, page 2-14

•

Attaching the Alarm Port Cable, page 2-22

•

Using the Cable-Management Bracket, page 2-22

•

Connecting Power, page 2-23

The Cisco 7401ASR router operates as either a tabletop or a rack-mounted unit. A rack-mount kit is
standard equipment included with the Cisco 7401ASR router when it is shipped from the factory. The
kit provides the hardware needed to mount the router in a standard 19-inch equipment rack or a two post
rack or a 21–23-inch equipment rack.
If you are not rack-mounting your Cisco 7401ASR router, place it on a sturdy tabletop or platform.

Preparing to Install the Cisco 7401ASR Router
Before installing your Cisco 7401ASR router, you should consider the power and cabling requirements
that must be in place at your installation site, the equipment you need to install the router, and the
environmental conditions your installation site must meet to maintain normal operation. This section
guides you through the process of preparing for your router installation and the installation in a rack.
This section contains the following topics:
•

Tools and Parts Required, page 2-2

•

Electrical Equipment Guidelines, page 2-3

•

Preventing Electrostatic Discharge Damage, page 2-4

•

Site Requirement Guidelines, page 2-4

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-1

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Preparing to Install the Cisco 7401ASR Router

Figure 2-1

Dimensions of Cisco 7401ASR Router

2

3

50537

1

1

12.875 in. (32.7cm)

2

17.3 in. (43.9 cm)

3

11.8 in. (30 cm)

Table 2-1 provides dimensions and weight information.
Table 2-1

Cisco 7401ASR Dimensions and Weight

Cisco 7401ASR
Dimensions (H x W x D)

1.72 in. x 17.3 in. x 11.80 in. (4.37 cm x 43.9 cm x 30 cm)

Weight

Chassis fully configured with a port adapter ~ 10.5 lb (4.76 kg)

Tools and Parts Required
Your Cisco 7401ASR chassis is fully assembled at the factory; no assembly is required. However, you
need the following tools and equipment to install the chassis and the rack-mount and cable-management
kit:
•

Number 2 Phillips screwdriver

•

A 3/16-inch flat-blade screwdriver

•

Tape measure (optional)

•

Level (optional)

The rack-mount and cable-management kit includes the following parts:
•

Two rack-mount brackets for mounting the chassis in the rack

•

One cable-management bracket

•

Four 12-24 x 0.5-in. screws to secure the rack-mount brackets to the chassis

•

Four 8-18 x .37-in. screws to secure the rack-mount brackets to a 19-inch rack

•

Four 8 x .375-in. screws to secure the rack-mount brackets to a 21–23-inch rack

•

One M4 x 20-mm screw to attach the cable-management bracket to the rack-mount bracket

Cisco 7401ASR Installation and Configuration Guide

2-2

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Preparing to Install the Cisco 7401ASR Router

•

Grounding lug and wires:
– A grounding lug with two number-10 screw holes with a 0.63-inch (16.002-mm) spacing

between them
– A wire receptacle large enough to accept a 6-AWG multistrand, copper wire
– Two Phillips machine screws with locking washers—M5 (metric), 0.031-inch (.08-mm) pitch,

0.315-inch (8-mm) length
– A crimping tool to fit the grounding lug wire receptacle
– One grounding wire—6-AWG, 0.162-inch (4.115-mm) diameter, with approximately

0.108-inch (2.743-mm) insulation, for a total wire diameter of approximately 0.27 inches
(6.858 mm). The wire length depends on your router location and site environment.
In addition, you might need the following external equipment:
•

Data service unit (DSU) to connect each serial port to an external network

•

T1 channel service unit/data service unit (CSU/DSU) that converts the High-Level Data Link
Control (HDLC) synchronous serial data stream into a T1 data stream with the correct framing and
ones density to connect a serial port to a T1 network. (Some telephone systems require a minimum
number of 1 bits per time unit in a data stream, called ones density.) Several T1 CSU/DSU devices
are available as additional equipment, and most provide a V.35, EIA/TIA-449, or EIA-530 electrical
interface.

•

Ethernet transceiver

•

Token Ring multistation access unit (MSAU)

•

ESD-preventative wrist strap

•

Power cord

•

Appropriate cables to connect the router to the console and auxiliary ports

Electrical Equipment Guidelines
The port adapter is designed to 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 chassis interior, locate the emergency
power-off switch for the room in which you are working.

•

Disconnect all power and external cables before moving a chassis.

•

Do not work alone when potentially hazardous conditions exist.

•

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

•

Do not perform any action that creates a potential hazard or makes the equipment unsafe.

•

Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-3

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Safety Guidelines

Safety Guidelines
Following are safety guidelines that you should follow when working with any equipment that connects
to electrical power, or which might be sensitive to electrostatic discharge (ESD) damage.

Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent system failures. Each port adapter consists of
a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding,
connectors, and a handle are integral components of the carrier. Although the carrier helps protect the
boards, use an antistatic strap whenever handling the port adapter. Handle the carriers by the handle and
the carrier edges only; never touch the boards or connector pins.

Electrostatic Discharge Prevention
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures.
Use the following guidelines for preventing ESD damage:

Caution

•

Always use an ESD wrist or ankle strap and ensure that it makes good skin contact; connect the
equipment end of the strap to an unfinished chassis surface.

•

Avoid contact between the printed circuit boards and clothing. The wrist strap only protects
components from ESD voltages on the body; ESD voltages on clothing can still cause damage.

For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megaohms (Mohms).

Site Requirement Guidelines
Warning

Before you install, operate, or service the system, read the Site Preparation and Safety Guide. This
guide contains important safety information you should know before working with the system.

The environmental monitoring functionality in the Cisco 7401ASR router protects the system and
components from potential damage from overvoltage and overtemperature conditions. To ensure normal
operation and avoid unnecessary maintenance, plan your site configuration and prepare your site before
installation. After installation, make sure the site maintains an ambient temperature of 32°F through
104°F (0°C through 40°C), and keep the area around the chassis as free from dust as is practical.
Planning a proper location for the Cisco 7401ASR router and the layout of your equipment rack or wiring
closet is essential for successful system operation. Equipment placed too close together or inadequately
ventilated can cause system overtemperature conditions. In addition, chassis panels made inaccessible
by poor equipment placement can make system maintenance difficult. Following are precautions that can
help avoid problems during installation and ongoing operation.

Cisco 7401ASR Installation and Configuration Guide

2-4

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Installing the Router

Figure 2-2

Airflow Through the Chassis

D
R
LE LS RIE M
AB EL AR AR
EN RX C RX C X AL

TX
RX

ENHANCED
ATM

50533

R

When you plan the location and layout of your equipment rack or wiring closet, you need to consider
how air flows through your router. The Cisco 7401ASR router draws cooling air in through the intake
vents on the front of the chassis and moves the air across the internal components and out the exhaust
vents on the rear of the chassis. Figure 2-2 shows airflow through the router.
Temperature sensors on the system board monitor the internal air temperature and send warning
messages when the internal air temperature approaches a specified threshold. If the internal temperature
exceeds the specified threshold, the system environmental monitor shuts down all internal power to
prevent equipment damage from excessive heat. (See the “Environmental Monitoring and Reporting
Functions” section on page 3-4 for temperature threshold information.)

Installing the Router
This section explains how to install a Cisco 7401ASR router in a general tabletop or workbench
installation and in a rack, and how to attach I/O, port adapter, and power cables. This section contains
the following topics:
•

General Tabletop or Workbench Installation, page 2-5

•

Rack-Mounting a Cisco 7401ASR Router, page 2-6

•

Attaching the Chassis Rack-Mount and Cable-Management Brackets, page 2-7

•

Installing the Chassis in the Rack, page 2-9

General Tabletop or Workbench Installation
The router should already be in the area where you will install it, and your installation location should
already be determined. If not, see the “Preparing to Install the Cisco 7401ASR Router” section on
page 2-1, the “Site Requirement Guidelines” section on page 2-4, and the “Site Preparation and Safety”
section of the Cisco 7401ASR Regulatory Compliance and Safety Information document.
When installing a Cisco 7401ASR router on a workbench or tabletop, ensure that the surface is clean and
in a safe location and that you have considered the following:
•

The router requires at least 3 inches (7.62 cm) of clearance at the inlet and exhaust vents (the front
and rear of the router).

•

The router should be installed off the floor. (Dust that accumulates on the floor is drawn into the
interior of the router by the cooling fans. Excessive dust inside the router can cause overtemperature
conditions and component failures.)

•

There must be approximately 19 inches (48.3 cm) of clearance at the front and rear of the router for
installing and replacing router parts—such as the port adapter, GBIC, or CompactFlash Disk—or
accessing network cables or equipment.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-5

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Installing the Router

•

A port adapter filler panel is installed if a port adapter or service adapter is not in place.

•

The router will receive adequate ventilation (it is not being installed in an enclosed cabinet where
ventilation is inadequate).

•

If you plan to install the cable-management bracket, unpack and have handy the cable-management
bracket and one M4 x 20-mm screw.

•

An adequate chassis ground (earth) connection exists for your router chassis.

Note

We strongly recommend that you provide a chassis ground connection. See the “Attaching a
Chassis Ground Connection” section on page 2-11 for instructions.

Following are the steps for installing a Cisco 7401ASR router on a workbench or tabletop:
Step 1

Remove any debris and dust from the tabletop or workbench, as well as the surrounding area. Also make
sure your path between the router and its new location is unobstructed.

Step 2

On the chassis, ensure that the port adapter latch is in the locked position.

Step 3

Lift the chassis by placing your hands around the chassis sides and lifting the chassis from underneath.
To prevent injury, avoid sudden twists or moves.

Step 4

Place the router on the tabletop or workbench.

Step 5

Ensure that there is at least 3 inches (7.62 cm) of clearance at the inlet and exhaust vents of the router
and no exhaust air from other equipment will be drawn into the chassis. Also, ensure that there is
approximately 19 inches (48.3 cm) of clearance at the front and rear of the chassis.

This completes the general tabletop or workbench installation.

Rack-Mounting a Cisco 7401ASR Router
The chassis mounts to two rack posts with brackets that attach to either the front or the rear sides of the
chassis. The inside width between the two posts or mounting strips (left and right) must be at least
17.3 inches (43.9 cm).
Some equipment racks provide a power strip along the length of one of the mounting strips. Figure 2-7
shows a typical four-post equipment rack with a power strip along one of the back posts. If your rack has
this feature, consider the position of the strip when planning fastener points to ensure that you will be
able to pull the port adapter, a GBIC, or CompactFlash Disk straight out of their respective slots.
The inlet and exhaust ports for cooling air are located on the front and rear of the chassis, respectively,
so multiple routers can be stacked in a rack with little or no vertical clearance.
Before beginning the installation, determine the type of rack you are using and whether or not you want
the chassis front- or rear-mounted.

Note

If you are rear-mounting the chassis and want to use the cable-management bracket, you must purchase
a second rack-mount kit. You need another rack-mount bracket to attach to the front of the chassis. After
it is attached to the chassis, install the cable-management bracket to the rack-mount bracket.

Cisco 7401ASR Installation and Configuration Guide

2-6

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Installing the Router

Attaching the Chassis Rack-Mount and Cable-Management Brackets
This section explains how to install the rack-mount and cable-management brackets at the front and the
rear of a Cisco 7401ASR router. Before installing the chassis in the rack, you must install a rack-mount
bracket on each side of the front or rear of the chassis.
The parts and tools required for installing the rack-mount brackets and cable-management bracket are
listed in the “Tools and Parts Required” section on page 2-2.

Installing Rack-Mount Brackets on the Front of the Chassis
Figure 2-3

Attaching the Rack-Mount Brackets to the Front of the Chassis

D
R
LE LS RIE M
AB EL AR AR
EN RX C RX C X AL

TX
RX

ENHANCED
ATM

50531

R

1
1

Rack-mount bracket

2

2

4 screws, 8-18 x .37 in., for use with a 19-inch
rack
4 screws, 8 x .375 in., for use with a
21–23- inch rack

Determine whether you want the chassis to be flush-mounted or recessed. Figure 2-3 shows the brackets
being attached for a front rack-mount. Depending on the bracket holes you use, the router will protrude
or be recessed in the rack.
To install the rack-mount and cable-management brackets on a Cisco 7401ASR router for a front
rack-mount configuration, complete the following steps:
Step 1

Locate the threaded holes in the front sides of the chassis.

Step 2

Align the rack-mount bracket (1) to the side of the router. Depending on which set of rack-mount bracket
holes you choose to use to attach the rack-mount bracket to the router, the chassis will either be recessed
in the rack or protrude from the rack.

Step 3

Insert and tighten two screws (2).

Step 4

Repeat Step 1 through Step 3 on the other side of the router.

This completes the steps for attaching the rack-mount brackets to the Cisco 7401ASR router.
To install the cable-management bracket, go to “Attaching the Cable-Management Bracket” section on
page 2-8. If you are not installing the cable-management bracket, go to the “Installing the Chassis in the
Rack” section on page 2-9.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-7

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Installing the Router

Attaching the Cable-Management Bracket
Figure 2-4

Installing the Cable-Management Bracket

1
D

LE

AB

S IER
LL R RM
CE CAR LA
RX RX RX A

TX
RX

57578

EN

2
1

2

Cable-management bracket

M4 x 20-mm screw

Step 1

Align the cable-management bracket to the rack-mount bracket on the left side of the Cisco 7401ASR
router.

Step 2

Using a Phillips screwdriver and the M4 x 20-mm screw, thread and tighten the screw to the
cable-management bracket.

This completes the procedure for installing the cable-management bracket on a Cisco 7401ASR router
for a front rack-mount configuration. Go to the “Installing the Chassis in the Rack” section on page 2-9.

Installing Rack-Mount Brackets on the Rear of the Chassis
Figure 2-5

R

2
TX
RX

ENHANCED
ATM

1
1

Rack-mount bracket

2

50532

D
R
LE LS RIE M
AB EL AR AR
EN RX C RX C X AL

Attaching the Rack-Mount Brackets to the Rear of the Chassis

4 screws, 8-18 x .37 in., for use with a 19-inch
rack
4 screws, 8 x .375 in., for use with a
21–23- inch rack

To install the rack-mount and cable-management brackets on a Cisco 7401ASR router for a rear
rack-mount configuration, complete the following steps:
Step 1

Locate the threaded holes in the rear sides of the chassis.

Cisco 7401ASR Installation and Configuration Guide

2-8

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Installing the Router

Step 2

Align the rack-mount bracket to the side of the router. Depending on which set of holes on the
rack-mount bracket that you use, the router will either be recessed in the rack or protrude from the rack.

Step 3

Insert and tighten the screws.

Step 4

Repeat Step 1 through Step 3 on the other side of the router.

Note

To use the cable-management bracket with the Cisco 7401ASR router rear-mounted, you must purchase
a second rack-mount kit, attach a rack-mount bracket to the left front of the chassis, and attach the
cable-management bracket to it. See the “Attaching the Cable-Management Bracket” section on page 2-8
for cable-management bracket installation instructions.
This completes the procedure for installing the rack-mount on a Cisco 7401ASR router for a rear
rack-mount configuration. Go to the “Installing the Chassis in the Rack” section on page 2-9.

Installing the Chassis in the Rack
Caution

To prevent injury, review the safety precautions in this chapter before installing the router in a rack.
After installing the brackets on the chassis, you mount the router by securing the rack-mount brackets to
two posts or mounting strips in the rack using the four screws provided. Because the brackets support
the weight of the entire chassis, be sure to use all four screws to fasten the two rack-mount brackets to
the rack posts. Figure 2-6 on page 2-10 and Figure 2-7 on page 2-11 show typical installations in
two-post and four-post equipment racks.
We recommend that you allow at least 1 or 2 inches (2.54 or 5.08 cm) of vertical clearance between the
router and any equipment directly above and below it.
To install the chassis in the rack, complete the following steps:

Step 1

On the chassis, ensure that the port adapter latch is in the locked position and tightened, and that the
CompactFlash Disk and any GBICs are installed.

Step 2

Make sure that your path to the rack is unobstructed. If the rack is on wheels, ensure that the brakes are
engaged or that the rack is otherwise stabilized.

Step 3

Position the chassis so that the front end is closest to you. Lift the chassis and move it to the rack. To
prevent injury, avoid sudden twists or moves.

Step 4

Slide the chassis into the rack, pushing it back until the brackets (installed at the front or rear of the
chassis) meet the mounting strips or posts on both sides of the equipment rack.

For two-post rack installation, go to the “Two-Post Rack Installation” section on page 2-10.
For four-post rack installation, go to the “Four-Post Rack Installation” section on page 2-11.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-9

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Installing the Router

Two-Post Rack Installation
Figure 2-6

Installing the Cisco 7401ASR Router in a Two-Post Rack

1

R

TX
RX

ENHANCED

ATM

2

1

Two-post or four-post rack

2

Screw hole for the cable-management
bracket

57572

D
R
LE LS RIE M
AB EL AR AR
EN RX C RX C X AL

3

3

Four 12-24 x 0.5-inch screws

Step 1

Make sure that the port adapter latch is in the locked position and the screw is tightened.

Step 2

Make sure the rack brakes are locked or the rack is stabilized.

Step 3

Position the router so the front is closest to you and lift it carefully into the rack. To prevent injury, avoid
any sudden twists or moves.

Step 4

Slide the chassis into the rack, pushing it back until the brackets meet the mounting strips or posts on
both sides of the rack.

Step 5

Keeping the brackets flush against the posts or mounting strips, align the holes in the brackets with the
holes on the rack or mounting strip.

Step 6

For each bracket, insert and tighten two 12-24 x 0.5-inch screws to the rack.

This completes the procedure for installing the chassis in the rack. Proceed to the “Attaching a Chassis
Ground Connection” section on page 2-11 to continue the installation.

Cisco 7401ASR Installation and Configuration Guide

2-10

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Attaching a Chassis Ground Connection

Four-Post Rack Installation
Figure 2-7

Installing the Cisco 7401ASR Router in a Four-Post Rack

1

EN

AB

LE

D

S IER
LL R RM
CE CAR LA
RX RX RX A

TX
RX

ENHANCED

ATM

2

50534

3

1

Four-post rack

3

2

Screw hole for the cable-management bracket

Four 12-24 x 0.5-inch screws

Step 1

Make sure that the port adapter latch is in the locked position and the screw is tightened.

Step 2

Make sure the rack brakes are locked or the rack is stabilized.

Step 3

Position the router so the front is closest to you and lift it carefully into the rack. To prevent injury, avoid
any sudden twists or moves.

Step 4

Slide the chassis into the rack, pushing it back until the brackets meet the mounting strips or posts on
both sides of the rack.

Step 5

Keeping the brackets flush against the posts or mounting strips, align the holes in the brackets with the
holes on the rack or mounting strip.

Step 6

For each bracket, insert and tighten two 12-24 x 0.5-inch screws to the rack.

This completes the procedure for installing the chassis in the rack. Proceed to the “Attaching a Chassis
Ground Connection” section on page 2-11 to continue the installation.

Attaching a Chassis Ground Connection
Before you connect power or turn on power to your router, we strongly recommend that you provide an
adequate chassis ground (earth) connection for the router chassis. Chassis grounding connectors are
provided on each Cisco 7401ASR router chassis. (See Figure 2-8 on page 2-12.)
To ensure the chassis grounding connection that you provide is adequate, you will need the following
parts and tools:

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-11

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Attaching a Chassis Ground Connection

•

One grounding lug—Must have two number-10 screw holes that have a 0.63-inch (16.002-mm)
spacing between them, and a wire receptacle large enough to accept a 6-AWG multistrand, copper
wire. This grounding lug is not available from Cisco Systems; electrical-connector vendors provide
this type of grounding lug.

•

Two Phillips machine screws with locking washers—M5 (metric), 0.031-inch (0.8-mm) pitch,
0.315-inch (8-mm) length. These screws are not available from Cisco Systems; they are available
from a commercial hardware vendor.

•

One grounding wire—6-AWG, 0.162-inch (4.115-mm) diameter, with approximately 0.108-inch
(2.743-mm) insulation, for a total wire diameter of approximately 0.27 inches (6.858 mm). The wire
length is dependent on your router location and site environment. This wire is not available from
Cisco Systems; it is available from a commercial cable vendor.

•

Number 2 Phillips screwdriver

•

Crimping tool large enough to accommodate the diameter of the wire receptacle on your grounding
lug

•

Wire stripper
Locating the Chassis Grounding Connector

50530

Figure 2-8

1
2
1

Fan vents

2

Ground connector

Use the following procedure to attach the grounding lug to the chassis grounding connector on your
router chassis:
Step 1

Locate the chassis grounding connector on your router chassis.

Cisco 7401ASR Installation and Configuration Guide

2-12

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting Port Adapter Cables

Figure 2-9

Attaching a Grounding Lug to the Chassis Grounding Connector

3

2
50536

4

1
1

Chassis grounding connector

3

Screws

2

Grounding lug

4

Wire

Step 2

Use the wire stripper to strip one end of the 6-AWG wire approximately 0.75 inches (19.05 mm).

Step 3

Insert the 6-AWG wire into the wire receptacle on the grounding lug.

Step 4

Use the crimping tool to carefully crimp the wire receptacle around the wire; this step is required to
ensure a proper mechanical connection.

Step 5

Insert the two screws through the holes in the grounding lug. (See Figure 2-9.)

Step 6

Use the Number 2 Phillips screwdriver to carefully tighten the screws until the grounding lug is held
firmly to the chassis. Do not overtighten the screws.

Step 7

Connect the opposite end of the grounding wire to the appropriate grounding point at your site to ensure
an adequate chassis ground.

This completes the procedure for attaching a chassis ground connection. Go to the following cabling
sections for information on attaching cables.

Connecting Port Adapter Cables
The instructions for connecting the cables for the port adapter installed in the Cisco 7401ASR router are
contained in the respective configuration note for each port adapter. For example, if you are connecting
the optical fiber cables for the PA-POS-OC3 port adapter, refer to the configuration note PA-POS-OC3
Packet OC3 Port Adapter Installation and Configuration at
http://www.cisco.com/univercd/cc/td/doc/product/core/7206/port_adp/sonet_pa/paposoc3/index.htm.
Port adapter documents are also available on the Documentation CD-ROM.

Note

There are no cable connections to the VPN Acceleration Module (.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-13

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Connecting I/O Cables

Connecting I/O Cables
This section contains connection equipment information for the Fast Ethernet/Ethernet, Gigabit
Ethernet, console, and auxiliary ports.

Connecting Console and Auxiliary Port Cables
The Cisco 7401ASR router has a DCE-mode console port for connecting a console terminal, and a
DTE-mode auxiliary port for connecting a modem or other DCE device (such as a CSU/DSU or other
router) to your router.

Note

Both the console and the auxiliary ports are asynchronous serial ports; any devices connected to these
ports must be capable of asynchronous transmission. (Asynchronous is the most common type of serial
device; for example, most modems are asynchronous devices.)
The Cisco 7401ASR router uses RJ-45 ports for both the auxiliary and console ports.
Before connecting a terminal to the console port, configure the terminal to match the router console port
as follows: 9600 baud, 8 data bits, no parity, 2 stop bits (9600 8N2). After you establish normal router
operation, you can disconnect the terminal.
Table 2-2

Pinouts for the RJ-45-to-DB-25 Adapters

Adapter

DTE M/F Pins1

DCE M/F Pins

MMOD Pins2

1

4

5

5

2

20

6

8

3

2

3

3

4

7

7

7

5

7

7

7

6

3

2

2

7

6

20

20

8

5

4

4

1. The female data terminal equipment (FDTE) adapter that is available from Cisco is labeled “Terminal”.
2. The MMOD adapter that is available from Cisco is labeled “Modem”.

Refer to Table 2-2 for a list of the pins used on the RJ-45-to-DB-25 adapters, used with an RJ-45 cable,
to connect terminals and modems to the Cisco7200 series routers. The cable you use may be a roll-over
cable or a straight cable.
A roll-over cable can be detected by comparing the two modular ends of the cable. Holding the cables
in your hand, side-by-side, with the tab at the back, the wire connected to the pin on the outside of the
left plug should be the same color as the pin on the outside of the right plug. If your cable was purchased
from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a roll-over cable
reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5). (See Figure 2-10.)

Cisco 7401ASR Installation and Configuration Guide

2-14

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting I/O Cables

Figure 2-10 Identifying a Roll-Over Cable

2
3

84532

1

1

Pin 1

3

2

Pin 1 and pin 8 should be the same color

Pin 8

The Cisco 7200 series routers ships with a rolled cable. Connection to a terminal or a modem will require
an RJ-45-to-DB-25 adapter, and possibly a DB-25-to-DB9 adapter. Refer to Table 2-3 for the cable and
adapter configurations that can be used to connect terminals and modems to the Cisco 7200 series
routers.
Table 2-3

Asynchronous Device Cabling Options

Access Server Port

RJ-45 Cable Type

DB-25 Adapter
1

Console or auxiliary

Rolled

FDTE

Console or auxiliary

Straight

FDCE

Auxiliary or console

Rolled

MMOD

End Device
Terminal
Terminal

2

Modem

1. The FDTE RJ-45-to-DB-25 adapter is labeled “Terminal”.
2. The MMOD RJ-45-to-DB-25 adapter is labeled “Modem”.

Both ports are configured as asynchronous serial ports. Figure 2-11 shows the RJ-45 console and
auxiliary port connections.
For console and auxiliary port pinouts for the RJ-45 connector, see Appendix A, “Specifications,” the
uckers3cat.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-15

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Connecting I/O Cables

Figure 2-11 Console and Auxiliary Port RJ-45 Connectors

2

57577

1

3
4

5

1

Auxiliary port

4

Cable to modem or DCE

2

Console port

5

Cable to console terminal or DTE

3

RJ-45 connector

Connecting Native Gigabit Ethernet and Fast Ethernet/Ethernet Cables
Note

See Chapter 3, “Starting and Configuring,” the “Configuring the Native Gigabit Ethernet and Fast
Ethernet/Ethernet Interfaces” section on page 3-15, for information on configuring and troubleshooting
the Gigabit Ethernet and Fast Ethernet/Ethernet interfaces.
The Cisco 7401ASR router has two Ethernet interfaces and four physical Ethernet ports, two RJ-45
(10/100 Mbps) ports and two Gigabit Ethernet (1000 Mbps) ports. Only two of the four ports can be in
use at any one time.
There are two PCI buses. One Gigabit Ethernet (1000) port and one Fast Ethernet RJ-45 (10/100) port
are on the PCI bus 1. The port adapter slot, one Gigabit Ethernet (1000) port, and one Fast Ethernet RJ-45
(10/100) port are on PCI bus 0.

Attaching the Fast Ethernet/Ethernet 10/100 Cables
The RJ-45 ports support IEEE 802.3 (Ethernet) and IEEE 802.3u (Fast Ethernet) interfaces compliant
with 10BASET and 100BASETX specifications.
The RJ-45 port supports standard straight-through and crossover Category 5 unshielded twisted-pair
(UTP) cables with RJ-45 connectors. Cisco Systems does not supply Category 5 UTP cables; these
cables are available commercially.
See Appendix A, “Specifications,” for Fast Ethernet RJ-45 port specifications.

Intra-Building Lightning Protection
Shielded cables, which are grounded at both ends are required to be used on the 10/100 Ethernet port in
order to be in compliance with requirement R4-11 in GR-1089-Core for a Central Office environment.
This is not a requirement for customer premise installations.

Cisco 7401ASR Installation and Configuration Guide

2-16

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting I/O Cables

Figure 2-12 Attaching the Fast Ethernet/Ethernet Cables

1

2

1

Fast Ethernet/Ethernet port 0 (RJ-45
connector)

2

Fast Etherne/Ethernett port 1 (RJ-45
connector)

57696

3

3

Fast Ethernet cables

Attach either one or two Fast Ethernet/Ethernet 10/100 cables to the Fast Ethernet/Ethernet port 0 or
port 1.

Warning

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

Attaching the GBIC Interface Cables
The GBIC ports support IEEE 8092.3z (optical Gigabit Ethernet) interfaces compliant with
1000BASESX and 1000BASELX specifications.
After you install the GBIC in the Gigabit Ethernet port, you must attach the cables to the GBIC. The
instructions that follow apply to all supported platforms.
See Appendix A, “Specifications,” for more information on GBIC cabling and cabling specifications.

Note

Optical fiber cables are commercially available; they are not available from Cisco Systems.

Attaching Multimode and Single-Mode Optical Fiber Cables
If you ordered a Gigabit Interface Converter (GBIC) with your Cisco 7401ASR router, it is one of three
types listed in Table 2-4:

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-17

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Connecting I/O Cables

Table 2-4

GBIC Products, Description, and Operating Distance

Product
Number

GBIC

Description

Operating Distance

GBIC-SX=
or

Short wavelength
(1000BASESX)

Contains a Class 1 laser of
850 nm for 1000BASESX
(short wavelength)
applications.

Operates on standard
multimode fiber-optic link
spans of up to 1804 ft
(550 m).

WS-G5484=

Contains a Class 1 laser of
GBIC-LX/LH= Long wavelength/
long haul
1300 nm for
or
(1000BASELX/LH) 1000BASELX/LH (long
WS-G5486=
wavelength) applications.

Operates on single-mode and
multimode fiber-optic link
spans of up to 6.2 miles
(10 km).

GBIC-ZX= or

Operates on ordinary
single-mode fiber-optic link
spans of up to 43.5 miles
(70 km). Link spans of up to
62.1 miles (100 km) are
possible using premium
single-mode fiber or
dispersion-shifted
single-mode fiber.

WS-G5487=

Extended distance
(1000BASEZX)

Contains a Class 1 laser of
1550 nm for 1000BASEZX
(extended wavelength)
applications.

For cabling specifications, including specific cable maximum distances, see Appendix A,
“Specifications.”.

Caution

If you plan to use a GBIC-LX/LH or WS-G5486 at distances greater than 984.25 feet (300 meters) over
50/125-micron or 62.5/125-micron multimode fiber, you must use the mode-conditioning patch cord to
prevent data transmission problems. (See the “Attaching the Mode-Conditioning Patch Cord” section on
page 2-21.)

Warning

Class 1 laser product.

Warning

Class 1 LED product.

Cisco 7401ASR Installation and Configuration Guide

2-18

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting I/O Cables

Figure 2-13 GBIC Port Connections

1

5

6
7

3

57580

2

4

1

To external 1000BASEX network

5

TX (GE port 0)

2

1 duplex connector (TX and RX)

6

RX (GE port 0)

3

To external 1000BASEX network

7

GE port 1

4

2 simplex connectors

Step 1

Remove the plug from the GBIC so that you can insert the cables. Keep the plug for use should you ever
disconnect the optical fiber cables.

Warning

Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is
connected, avoid exposure to laser radiation and do not stare into open apertures.

Step 2

Attach the appropriate optical fiber cable directly to the SC-type receptacle on the GBIC. You can use
either simplex or duplex connectors for most devices. (Figure 2-13 shows a GBIC installed in GE
port 0.)
•

For simplex connectors, two cables are required, one cable for transmit (TX) and a second cable for
receive (RX).

•

For duplex connectors, only one cable that has both TX and RX connectors is required.

A mode-conditioning patch cord can be used with the GBIC-LX/LH or WS-G5486 to allow reliable laser
transmission between the single-mode laser source on the GBIC and a multimode optical fiber cable. See
the “Attaching the Mode-Conditioning Patch Cord” section on page 2-21 for installation instructions.

Mode-Conditioning Patch Cord Description
A mode-conditioning patch cord can be used with the GBIC-LX/LH or WS-G5486 to allow reliable laser
transmission between the single-mode laser source on the GBIC and a multimode optical fiber cable.
When an unconditioned laser source designed for operation on single-mode optical fiber is directly
coupled to a multimode optical fiber cable, an effect known as differential mode delay (DMD) might
result in a degradation of the modal bandwidth of the optical fiber cable.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-19

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Connecting I/O Cables

This degradation results in a decrease in the link span (the distance between a transmitter and a receiver)
that can be supported reliably. The effect of DMD can be overcome by conditioning the launch
characteristics of a laser source. A practical means of performing this conditioning is to use a device
called a mode-conditioning patch cord.
A mode-conditioning patch cord is an optical fiber cable assembly that consists of a pair of optical fibers
terminated with connector hardware. Specifically, the mode-conditioning patch cord is composed of a
single-mode optical fiber permanently coupled off-center (see Offset in Figure 2-14) to a graded-index
multimode optical fiber. Figure 2-14 shows a diagram of the mode-conditioning patch cord assembly.
A mode-conditioning patch cord assembly is composed of duplex optical fibers, including a
single-mode-to-multimode offset launch fiber connected to the transmitter, and a second conventional
graded-index multimode optical fiber connected to the receiver. The use of a plug-to-plug patch cord
maximizes the power budget of multimode 1000BASELX and 1000BASELH links.

Note

The mode-conditioning patch cord is required to comply with IEEE standards. The IEEE found that link
distances could not be met with certain types of fiber-optic cable cores. The solution is to launch light
from the laser at a precise offset from the center, which is accomplished by using the mode-conditioning
patch cord. At the output of the patch cord, the GBIC is compliant with the IEEE 802.3z standard for
1000BASELX.

Cisco 7401ASR Installation and Configuration Guide

2-20

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting I/O Cables

Attaching the Mode-Conditioning Patch Cord
Figure 2-14 GBIC Mode-Conditioning Patch Cord

6

2
RX

3

1

//
//

Offset

//

7

8

6

9

57011

1

TX

4

5

1

Beige color identifier

6

Multimode bar

2

To GE interface

7

Single-mode bar

3

RX

8

Offset

4

TX

9

To cable plant

5

Blue color identifier

1

To use the mode-conditioning patch cord, follow these steps:
Step 1

Attach the patch cord to the SC-type receptacle on the GBIC. (See Figure 2-13.)

Step 2

Attach the network ends of your patch cord to the appropriate 1000BASEX equipment in your building
cable plant.
Ensure that you connect the TX and RX ports on one end of the patch cord to the RX and TX ports
(respectively) on the other end. Connect TX to RX and RX to TX.

This completes the procedures for connecting the I/O cables.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-21

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Attaching the Alarm Port Cable

Attaching the Alarm Port Cable
Figure 2-15 Connecting the Alarm Port Cable

57725

1

1

Alarm port

If you have an alarm system, attach the alarm cable to the Cisco 7401ASR router alarm port. The alarm
port cable is not provided by Cisco Systems. Insert the cable connector into the alarm port. The cable
connector cannot be incorrectly inserted into the alarm port.
The alarm port is used to monitor fatal or severe errors that cause Cisco IOS to crash. The alarm port is
connected to a normally closed solid state relay. Cisco IOS writes to a hardware port and the relay
contact opens. If the system enters into a ROMmon or watchdog reset state, the relay contacts close. The
closing contacts alert the alarm annunciator or monitor that a Cisco IOS crash has occurred.
If interfaces fail or other non-fatal errors occur, the alarm port does not respond. Continue to use SNMP
to manage these types of errors.
For alarm port specifications, see Appendix A, “Specifications,” the “Alarm Port” section on page A-9.

Using the Cable-Management Bracket
Figure 2-16 Securing Interface Cables through the Cable-Management Bracket

2
D
R
LE LS RIE M
AB EL AR AR
EN RX C RX C X AL

TX
RX

ENHANCED

ATM

57581

R

1
1

Input/output cables

2

Cable-management bracket

Secure port adapter interface cables and input/output cables by placing them through the
cable-management bracket.

Cisco 7401ASR Installation and Configuration Guide

2-22

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting Power

Proceed to the “Connecting Power” section on page 2-23 to complete the installation.

Connecting Power
This section provides the procedures for connecting AC-input and DC-input power to your Cisco
7401ASR router.

Warning

This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the
two power supply cords before servicing the unit.

Warning

The AC power supply has double pole/neutral fusing.

Connecting AC-Input Power
Figure 2-17 Connecting AC-Input Power

57576

2

1
1

AC power connector

2

Power switch

Connect an AC-input power supply as follows:
Step 1

At the front of the router, check that the power switch is in the off (O) position.

Step 2

Plug the power cable into the AC connector on the router.

Step 3

Plug the AC power supply cable into the AC power source.

Note

After powering off the router, wait at least 30 seconds before powering it on again.

This completes the procedure for connecting AC-input power. Your installation is complete. Proceed to
Chapter 3, “Starting and Configuring,” to start the router and to perform a basic configuration.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-23

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Connecting Power

Connecting DC-Input Power
Note

The color coding of the DC-input power supply leads depends on the color coding of the DC power
source at your site. Make certain the lead color coding you choose for the DC-input power supply
matches lead color coding used at the DC power source.

Warning

When you install the unit, the ground connection must always be made first and disconnected last.

Warning

Before completing any of the following steps, and to prevent short-circuit or shock hazards, ensure
that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker
on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and
tape the switch handle of the circuit breaker in the OFF position.

Connect a DC-input power supply as follows:
Step 1

At the front of the router, check that the power switch is in the off (O) position.

Step 2

Ensure that no current is flowing through the DC power supply leads. To ensure that all power is OFF,
locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to
the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Step 3

Using a wire stripper, strip approximately 0.55 inch (14 mm) from the –V and +V leads.

4

3

50538

B
A

A

B

Figure 2-18 Attaching the Leads to the DC Plug and the DC Plug to the
DC Connector

5

1
2

Step 4

1

DC plug

4

Single DC power connector

2

Lead

5

Dual DC power connector

3

+ and – embossed on connector

Insert the –V and +V leads into the DC plug that ships with the Cisco 7401ASR router. The plug allows
you to unplug the DC wires from the power supply without having to unscrew the leads.
a.

Orient the plug (1) to the connector (4) as shown in Figure 2-18. The plug inserts only one way.
Notice the symbols, + A – , embossed on the connector (3). Use the symbols and the orientation of
the plug to guide you when inserting the leads into the plug.

Cisco 7401ASR Installation and Configuration Guide

2-24

OL-5419-01 B0

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling
Connecting Power

b.

Insert the +V lead (2) into the plug as shown in Figure 2-18, and tighten the screw to hold the lead
to the plug.

c.

Insert the –V into the plug as shown in Figure 2-18, and tighten the screw to hold the lead to the plug.

Step 5

If you have a dual DC power supply, repeat Step 4 for the second plug.

Step 6

Insert the DC plug into the DC power connector on the chassis. If you have a dual DC power supply,
insert the second DC plug into the DC power connector.

Step 7

Switch the circuit breaker to the on position.

Note

After powering off the router, wait at least 30 seconds before powering it on again.

This completes the procedure for connecting DC-input power. Your installation is complete. Proceed to
Chapter 3, “Starting and Configuring,” to start the router and to perform a basic configuration.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

2-25

Chapter 2

Rack-Mounting, Tabletop Installation, and Cabling

Connecting Power

Cisco 7401ASR Installation and Configuration Guide

2-26

OL-5419-01 B0

C H A P T E R

3

Starting and Configuring
This chapter describes how to start the system and perform a basic configuration for your
Cisco 7401ASR router. The chapter contains the following sections:
•

Functional Overview, page 3-1

•

Checking Conditions Prior to System Startup, page 3-9

•

Starting the System and Observing Initial Conditions, page 3-9

•

Configuring a Cisco 7401ASR Router, page 3-10

•

Performing Other Configuration Tasks, page 3-21

•

Replacing or Recovering a Lost Password, page 3-22

•

Viewing Your System Configuration, page 3-25

•

Performing Complex Configurations, page 3-27

This chapter guides you through a basic router configuration, which is sufficient for you to access your
network. Complex configuration procedures are beyond the scope of this publication and can be found
in the modular configuration and modular command reference publications in the Cisco IOS software
configuration documentation set that corresponds to the software release installed on your Cisco
hardware.
To configure a Cisco 7401ASR router from a console, you need to connect a terminal to the router
console port.

Functional Overview
This section provides a functional overview of the Cisco 7401ASR router. It describes the numbering
and addressing scheme of the port adapter for the router, the environmental monitoring and reporting
functions, and online insertion and removal (OIR). These descriptions help you become familiar with
the capabilities of the Cisco 7401ASR router.

Chassis Slot and Logical Interface Numbering
In the Cisco 7401ASR router, the port-adapter-slot-number is the chassis slot in which a port adapter is
installed, whereas the logical-interface-number is the physical location of the interface port on a port
adapter.
The port adapter slot in the Cisco 7401ASR router is numbered slot 1. Port adapter slot 0 is always
reserved for logical slots 10 |100|1000 on the system board.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-1

Chapter 3

Starting and Configuring

Functional Overview

The Media Access Control (MAC) or hardware address is a standardized data link layer address that is
required for certain network interface types. These addresses are not used by other devices in the
network; they are specific and unique to each port. The Cisco 7401ASR router uses a specific method to
assign and control the MAC addresses of its port adapters. For a description of the MAC address, see the
“MAC Address” section on page 3-3.
You can identify port adapter slots by using software commands. To display information about all port
adapter slots, use the show interfaces command. To display information about a specific port adapter
slot, use the show interfaces command with the port adapter type and slot number in the format
show interfaces port-adapter-type slot-number/port-number. If you abbreviate the command (sh int)
and do not specify port adapter type and slot number (or arguments), the system interprets the command
as show interfaces and displays the status of all port adapters and ports.
The following example shows how the show interfaces command, used without arguments, displays
status information (including the physical port adapter number) for each port adapter in a Cisco
7401ASR router.
In the following example, most of the status information for each interface is omitted.
Router# show interfaces
GigabitEthernet0/0 is up, line protocol is down
Hardware is i82543 (Livengood), address is 0000.0000.0000 (bia 0000.0000.0000)
Internet address is 1.1.1.2
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
(display text omitted)
GigabitEthernet0/1 is administratively down, line protocol is down
Hardware is i82543 (Livengood), address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
(display text omitted)
Serial1/0:0 is down, line protocol is down
Hardware is Multichannel T1
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
(display text omitted)
alarm present
Timeslot(s) Used:1-24, subrate:64Kb/s, transmit delay is 0 flags

You can also use arguments such as the interface type (Ethernet, Token Ring, ATM, and so forth) and
the port address (slot-number/port-number) to display information about a specific interface only.
The following example shows the display for the first port on the Gigabit Ethernet port adapter in the
port adapter slot (1):
Router# show interface g1/0
GigabitEthernet1/0 is up, line protocol is down
Hardware is i82543 (Livengood), address is 0000.0000.0000 (bia 0000.0000.0000)
Internet address is 1.1.1.2
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex mode, link type is autonegotiation, media type is SX
output flow-control is off, input flow-control is off
ARP type:ARPA, ARP Timeout 04:00:00

Cisco 7401ASR Installation and Configuration Guide

3-2

OL-5419-01 B0

Chapter 3

Starting and Configuring
Functional Overview

For complete descriptions and instructions of the commands used to configure your Cisco 7401ASR
router, refer to the Cisco IOS Configuration Fundamentals Configuration Guide and Cisco IOS
Configuration Fundamentals Command Reference publications, which are available online, on the
Documentation CD-ROM, and in print.

MAC Address
All LAN interfaces (ports) require unique MAC addresses, also known as hardware addresses. Typically,
the MAC address of an interface is stored on a memory component that resides directly on the interface
circuitry; however, the OIR feature requires a different method. (For a description of OIR, see the
“Online Insertion and Removal” section on page 3-3.)
Using OIR you can remove a port adapter and replace it with another identically configured one. If the
new port adapter matches the port adapter you removed, the system immediately brings it online. In order
to enable OIR, an address allocator with unique MAC addresses is stored in an EEPROM on the system
board. Each address is reserved for a specific port and slot in the router regardless of whether a port
adapter resides in that slot. The MAC address for the port adapter slot in the Cisco 7401ASR is slot 0.
You can remove a port adapter and insert it into another router without causing the MAC addresses to
move around the network or be assigned to multiple devices.
Note that if the MAC addresses were stored on each port adapter, OIR would not function because you
could never replace one port adapter with an identical one; the MAC addresses would always be
different. Also, each time a port adapter was replaced, other devices on the network would have to update
their data structures with the new address. If the other devices did not update quickly enough, the same
MAC address could appear in more than one device at the same time.

Note

Storing the MAC addresses for every slot in one central location means the addresses stay with the
memory device on which they are stored.

Online Insertion and Removal
All port adapters and service adapters in the Cisco 7401ASR routers support online insertion and
removal (OIR). This function allows you to install and replace port adapters and service adapters while
the router is operating; you do not need to notify the software or shut down the system power. This
provides a method that is seamless to end users on the network, maintains all routing information, and
preserves sessions.
The following is a functional description of OIR for background information only; for specific
procedures for installing and replacing a port adapter or service adapter in a Cisco 7401ASR router, refer
to the configuration note that ships with each port adapter or service adapter.
Each port or service adapter has a bus connector that connects it to the router. The connector has a set
of tiered pins in three lengths that send specific signals to the system as they make contact with the port
adapter or service adapter. The system assesses the signals it receives and the order in which it receives
them to determine if a port adapter or service adapter is being removed or inserted into the system. From
these signals, the system determines whether to reinitialize a new interface or shut down a removed
interface.
For example, when you insert a port adapter or service adapter, the longest pins make contact with the
port adapter or service adapter first, and the shortest pins make contact last. The system recognizes the
signals and the sequence in which it receives them.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-3

Chapter 3

Starting and Configuring

Functional Overview

When you remove or insert a port adapter or service adapter in a Cisco 7401ASR router, the pins send
signals to notify the system, which then performs as follows:
1.

Rapidly scans the system for configuration changes.

2.

Initializes all newly inserted port adapter or service adapter, noting any removed interfaces and
placing them in the administratively shutdown state.

3.

Brings all previously configured interfaces on the port adapter back to the state they were in when
they were removed. Any newly inserted interface is put in the administratively shutdown state, as if
it was present (but not configured) at boot time. If a similar port adapter type is reinserted into a slot,
its ports are configured and brought online up to the port count of the original port adapter. (A
service adapter has no configurable ports.)

Environmental Monitoring and Reporting Functions
Environmental monitoring and reporting functions allow you to maintain normal system operation by
identifying and resolving adverse conditions prior to loss of operation. The environmental monitoring
functions constantly monitor the internal chassis air temperature and DC supply voltages and currents.
If conditions reach shutdown thresholds, the system shuts down to avoid equipment damage from
excessive heat. The reporting functions periodically log the values of measured parameters so that you
can retrieve them for analysis later, and the reporting functions display warnings on the console if any
of the monitored parameters exceed defined thresholds.

Environmental Monitoring
The environmental monitoring functions use two sensors, Sensor 1 near the processor, and Sensor 2, near
the power supply. If the air temperature exceeds a defined threshold, the system controller displays
warning messages on the console terminal, and if the temperature exceeds the shutdown threshold, the
system controller shuts down the system. The system stores the present parameter measurements for both
temperature and DC voltage in NVRAM so you can retrieve them later as a report of the last shutdown
parameters.
If an internal power supply temperature or voltage reaches a critical level, the power supply shuts down
without any interaction with the system processor.
The environmental monitoring functions use the following levels of status conditions to monitor the
system:
•

Normal—All monitored parameters are within normal tolerances.

•

Warning—The system has exceeded a specified threshold. The system continues to operate, but
operator action is recommended to bring the system back to a normal state.

•

Critical—An out-of-tolerance temperature or voltage condition exists. The system continues to
operate; however, the system is approaching shutdown. Immediate operator action is required.

•

Shutdown—The processor has detected a temperature condition that could result in physical damage
to system components and has disabled DC power to all internal components. This condition
requires immediate operator action. All DC power remains disabled until you toggle the power
switch. Before any shutdown, the system logs the status of monitored parameters in NVRAM so you
can retrieve it later to help determine the cause of the problem.

•

Power supply shutdown—The power supply detected an internal out-of-tolerance overvoltage,
overcurrent, or temperature condition and shut itself down. All DC power remains disabled until you
toggle the power switch.

Cisco 7401ASR Installation and Configuration Guide

3-4

OL-5419-01 B0

Chapter 3

Starting and Configuring
Functional Overview

Table 3-1 lists the typical temperature thresholds for the Cisco 7401ASR router, and Table 3-2 lists the
DC power thresholds for the normal, warning, and critical (power supply-monitored) levels.
Table 3-1

Typical Processor-Monitored Temperature Thresholds

Parameter

High Warning

Note

o

High Critical
o

o

Shutdown

122 F (50 C)

140 F (60 C)

149oF (65oC)

Sensor 2 (near power supply) 107oF (42oC)

125oF (52oC)

134oF (57oC)

Sensor 1 (near processor)

o

Table 3-2 shows output from the show environment table command.
Table 3-2

Typical Power Supply-Monitored DC-Voltage Thresholds

Parameter

Low Critical

Low Warning

High Warning

High Critical

+1.8V (PXF)

+1.61

+1.66

+1.93

+1.98

+1.8V (CPU)

+1.61

+1.66

+1.93

+1.97

+2.50V

+2.24

+2.31

+2.68

+2.75

+3.30V

+2.96

+3.04

+3.54

+3.62

+5.0V

+4.50

+4.62

+5.36

+5.50

+5.20V

+4.68

+4.80

+5.58

+5.72

+12.25V

+11.03

+11.32

+13.16

+13.49

–12.00V

–10.82

–11.10

–12.91

–13.20

Reporting Functions
The Cisco 7401ASR router displays warning messages on the console if chassis interface-monitored
parameters exceed a desired threshold. You can also retrieve and display environmental status reports
with the show environment, show environment all, show environment last, and show environment
table commands. Parameters are measured and reporting functions are updated every 60 seconds. A brief
description of each of these commands follows.

Caution

To prevent overheating the chassis, ensure that your system is drawing cool inlet air. Overtemperature
conditions can occur if the system is drawing in the exhaust air of other equipment. Ensure adequate
clearance around the sides of the chassis so that cooling air can flow through the chassis interior
unimpeded and exhaust air exits the chassis and is not drawn into the inlet vent of another device.
The show environment command displays reports of the current environmental system status. The
report displays parameters that are out of the normal values. No parameters are displayed if the system
status is normal. The example that follows shows the display for a system in which all monitored
parameters are within normal range:
Router# show environment
All measured values are normal

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-5

Chapter 3

Starting and Configuring

Functional Overview

If the environmental status is not normal, the system reports the worst-case status level. Following is a
sample overvoltage warning:
Router# show environment
Warning:+3.45 V measured at +3.27 V

The show environment last command retrieves and displays the NVRAM log, which shows the reason
for the last system shutdown (if the shutdown was related to voltage or temperature) and the
environmental status at that time. Air temperature is measured and displayed, and the DC voltage
supplied by the power supply is also displayed.
Following is sample output of the show environment last command:
Router# show environment last
chassis inlet
previously measured at 30C/86F
chassis outlet 1
previously measured at 28C/82F
chassis outlet 2
previously measured at -1C/31F
chassis outlet 3
previously measured at -1C/31F
+3.45 V
previously measured at +3.27
+5.15 V
previously measured at +5.01
+12.15 V
previously measured at +12.34
-11.95 V
previously measured at -12.41
last shutdown reason - power supply shutdown

The show environment table command displays the temperature and voltage thresholds for each
temperature sensor and for each monitored status level. These thresholds are related to those listed in
Table 3-1 and Table 3-2. The display also lists the shutdown threshold for the system.
Following is sample output of the show environment table command for a Cisco 7401ASR router:
Router# show environment table
Sample Point
LowCritical
LowWarning
chassis inlet
chassis outlet 1
chassis outlet 2
chassis outlet 3
+3.45 V
+3.26
+3.34
+5.15 V
+4.86
+4.99
+12.15 V
+11.39
+11.67
-11.95 V
-9.52
-10.73
System shutdown for chassis outlet 1 58C/136F
System shutdown for chassis outlet 3 65C/149F

Note

HighWarning
40C/104F
43C/109F
75C/167F
50C/122F
+3.55
+5.31
+12.62
-13.16

HighCritical
50C/122F
53C/127F
75C/167F
60C/140F
+3.63
+5.43
+12.91
-14.38

Temperature ranges and values are subject to change.
The show environment all command displays an extended report that includes temperature readings and
voltage readings. The show environment all command also displays a report showing which power
supply slots are occupied and which are empty.
Following is sample output of the show environment all command.
With AC power supply installed:
Router# show environment all
Power Supplies:
Power supply 1 is Internal AC Power Supply. Unit is on.
Power supply 2 is unmeasured.

Cisco 7401ASR Installation and Configuration Guide

3-6

OL-5419-01 B0

Chapter 3

Starting and Configuring
Functional Overview

Temperature readings:
chassis inlet
chassis outlet

measured at 29C/84F
measured at 26C/78F

Voltage readings:
+1.8 V (PXF) measured at +1.79 V
+1.8 V (CPU) measured at +1.77 V
+2.50 V
measured at +2.47 V
+3.30 V
measured at +3.28 V
+5.00 V
measured at +4.98 V
+5.20 V
measured at +5.18 V
+12.25 V
measured at +12.21 V
-12.00 V
measured at -12.15 V
Fans:
Fan 1 is believed to be working
Fan 2 is believed to be working
Fan 3 is believed to be working
Fan 4 is believed to be working
Fan 5 is believed to be working

With a single 24V DC power supply installed:
Router# show environment all
Power Supplies:
Power supply 1 is Internal 24VDC Power Supply. Unit is on.
Power supply 2 is unmeasured.
Temperature readings:
chassis inlet
chassis outlet
Voltage readings:
+1.8 V (PXF)
+1.8 V (CPU)
+2.50 V
+3.30 V
+5.00 V
+5.20 V
+12.25 V
-12.00 V

measured at 35C/95F
measured at 29C/84F

measured
measured
measured
measured
measured
measured
measured
measured

at
at
at
at
at
at
at
at

+1.79 V
+1.77 V
+2.47 V
+3.28 V
+4.98 V
+5.18 V
+12.36 V
-12.15 V

Fans:
Fan
Fan
Fan
Fan
Fan

1
2
3
4
5

is
is
is
is
is

believed
believed
believed
believed
believed

to
to
to
to
to

be
be
be
be
be

working
working
working
working
working

With a single 48V DC power supply installed:
Router# show environment all
Power Supplies:
Power supply 1 is Internal 48VDC Power Supply. Unit is on.
Power supply 2 is empty.
Temperature readings:
chassis inlet
chassis outlet
Voltage readings:
+1.8 V (PXF)
+1.8 V (CPU)

measured at 34C/93F
measured at 28C/82F

measured at +1.79 V
measured at +1.77 V

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-7

Chapter 3

Starting and Configuring

Functional Overview

+2.50 V
+3.30 V
+5.00 V
+5.20 V
+12.25 V
-12.00 V

measured
measured
measured
measured
measured
measured

at
at
at
at
at
at

+2.47 V
+3.28 V
+4.98 V
+5.18 V
+12.36 V
-12.15 V

Fans:
Fan
Fan
Fan
Fan
Fan

1
2
3
4
5

is
is
is
is
is

believed
believed
believed
believed
believed

to
to
to
to
to

be
be
be
be
be

working
working
working
working
working

With dual 48V DC power supplies installed:
Router# show environment all
Power Supplies:
Power supply 1 is Redundant 48VDC Power Supply. Unit is on.
Power supply 2 is empty.
Temperature readings:
chassis inlet
chassis outlet
Voltage readings:
+1.8 V (PXF)
+1.8 V (CPU)
+2.50 V
+3.30 V
+5.00 V
+5.20 V
+12.25 V
-12.00 V

measured at 34C/93F
measured at 28C/82F

measured
measured
measured
measured
measured
measured
measured
measured

at
at
at
at
at
at
at
at

+1.79 V
+1.77 V
+2.47 V
+3.28 V
+4.98 V
+5.18 V
+12.26 V
-12.15 V

Fans:
Fan
Fan
Fan
Fan
Fan

1
2
3
4
5

is
is
is
is
is

believed
believed
believed
believed
believed

to
to
to
to
to

be
be
be
be
be

working
working
working
working
working

Fan Failures
When the system power is on, all five fans should be operational. The system continues to operate if a
fan fails. When a fan fails, the system displays the following message:
router: 00:03:46:%ENVM-3-BLOWER:Fan 2 may have failed

If the air temperature exceeds a defined threshold, the system controller displays warning messages on
the console terminal, and if the temperature exceeds the shutdown threshold, the system controller shuts
down the system.
If the system does shut down because the temperature exceeded the shutdown threshold, the system
displays the following message on the console screen and in the environment display when the system
restarts:
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor initiated shutdown

Cisco 7401ASR Installation and Configuration Guide

3-8

OL-5419-01 B0

Chapter 3

Starting and Configuring
Checking Conditions Prior to System Startup

For complete descriptions and instructions for the environmental monitor commands, refer to the Cisco
IOS Configuration Fundamentals Configuration Guide and Cisco IOS Configuration Fundamentals
Command Reference publications, which are available online, on the Documentation CD-ROM, and in
print.

Checking Conditions Prior to System Startup
Check the following conditions before you start your router:
•

The port adapter is inserted in its slot and the port adapter latch is in the locked position.

•

The network interface cable is connected to the port adapter.

•

A CompactFlash Disk is installed.

•

The console terminal is turned on.

You are now ready to start your router. Proceed to the section “Starting the System and Observing Initial
Conditions.”

Starting the System and Observing Initial Conditions
After installing your Cisco 7401ASR router and connecting cables, start the router as follows:
Step 1

At the front of the router, place the power switch on the power supply in the on (|) position.

Step 2

Listen for the fans; you should immediately hear them operating.

Step 3

During the boot process, observe the system LEDs. The LEDs on the port adapter go on and off in
irregular sequence. They may go on, go out, and go on again for a short time. On the router, the green
STATUS LED comes on and stays on.

Step 4

Observe the initialization process. When the system boot is complete (a few seconds), the processor
begins to initialize the port adapter and the I/O subsystem. During this initialization, the LEDs on the
port adapter probably will flash on and off.
The enabled LED on the port adapter goes on when initialization is completed, and the console screen
displays a script and system banner similar to the following:
Cisco Internetwork Operating System Software
IOS (tm) 7400 Software (C7400-JS-M), Version 12.2(V99.1)Copyright (c) 1986-2001 by cisco
Systems, Inc.
Compiled Sat 19-May-01 11:31 by
Image text-base:0x60008960, data-base:0x617CA000

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-9

Chapter 3

Starting and Configuring

Configuring a Cisco 7401ASR Router

Step 5

When you start up the router for the first time, the system automatically enters the setup facility, which
determines which port adapter is installed and prompts you for configuration information. On the
console terminal, after the system displays the system banner and hardware configuration, you will see
the following System Configuration Dialog prompt:
--- System Configuration Dialog --At any point you may enter a questions mark ‘?’ for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets ‘[]’.
continue with configuration dialog? [yes]:

You have the option of proceeding with the setup facility to configure the interfaces, or exiting from
setup and using configuration commands to configure global (system-wide) and interface-specific
parameters. You do not have to configure the interfaces immediately; however, you cannot enable the
interfaces or connect them to any networks until you have configured them.
Many of the port adapter LEDs do not go on until you have configured the interfaces. To verify correct
operation of each interface, complete the first-time startup procedures and configuration, and then refer
to the configuration note for the port adapter for LED descriptions and to check the status of the
interfaces.
If the system does not complete each of the steps in the startup procedure, proceed to Chapter 5,
“Troubleshooting,” for troubleshooting recommendations and procedures.

Configuring a Cisco 7401ASR Router
You can configure your Cisco 7401ASR router using one of the procedures described in the following
sections:
•

Performing a Basic Configuration Using AutoInstall, page 3-11

•

Performing a Basic Configuration Using the Setup Facility, page 3-11

•

Performing a Basic Configuration Using Global Configuration Mode, page 3-20

Follow the procedure that best fits the needs of your network configuration.

Note

You need to acquire the correct network addresses from your system administrator or consult your
network plan to determine correct addresses before you can complete the router configuration.
Before continuing the configuration process, check the current state of the router by entering the show
version command. The show version command displays the release of Cisco IOS software that is
available on the router. Sample output of the show version command appears in the “Viewing Your
System Configuration” section on page 3-25.

Cisco 7401ASR Installation and Configuration Guide

3-10

OL-5419-01 B0

Chapter 3

Starting and Configuring
Configuring a Cisco 7401ASR Router

Performing a Basic Configuration Using AutoInstall
The AutoInstall process is designed to configure the Cisco 7401ASR router automatically after
connection to your WAN. For AutoInstall to work properly, a TCP/IP host on your network must be
preconfigured to provide the required configuration files. The TCP/IP host may exist anywhere on the
network as long as the following two conditions are maintained:
1.

The host must be on the remote side of the router synchronous serial connection to the WAN.

2.

User Datagram Protocol (UDP) broadcasts to and from the router and the TCP/IP host are enabled.

This functionality is coordinated by your system administrator at the site where the TCP/IP host is
located. You should not use AutoInstall unless the required files are available on the TCP/IP host. Refer
to the publications Cisco IOS Configuration Fundamentals Configuration Guide and Cisco IOS
Configuration Fundamentals Command Reference for information about how AutoInstall works.
Complete the following steps to prepare your Cisco 7401ASR router for the AutoInstall process:
Step 1

Attach the appropriate synchronous serial cable to synchronous serial interface 0 on the router.

Step 2

Turn the power switch on the power supply to the on (|) position. (This action turns on AC power to the
router.)

Note

After powering off the router, wait at least 30 seconds before powering it on again.

The router loads the operating system image from Flash memory. If the remote end of the WAN
connection is connected and properly configured, the AutoInstall process begins.
Once the AutoInstall process is completed, use the copy running-config startup-config command to
write the configuration data to the router’s nonvolatile random-access memory (NVRAM). Perform the
following step to complete this task.
Step 3

At the # prompt, enter the following command:
Hostname# copy running-config startup-config

Note

Completing Step 3 saves the configuration settings that the AutoInstall process created to NVRAM. If
you fail to do this, your configuration will be lost the next time you reload the router.

Performing a Basic Configuration Using the Setup Facility
If you do not plan to use AutoInstall, do not connect the router’s serial (WAN) cable to the channel
service unit/data service unit (CSU/DSU). If the WAN cable is not connected, the router boots from
Flash memory and goes automatically into the setup facility.

Note

You can run the setup facility any time you are at the enable prompt (#) by entering the setup command.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-11

Chapter 3

Starting and Configuring

Configuring a Cisco 7401ASR Router

If the serial (WAN) cable is connected to the CSU/DSU and the router does not have a configuration
stored in NVRAM, the router attempts to run AutoInstall at startup. The router may take several minutes
to determine that AutoInstall is not set up to a remote TCP/IP host. Once the router determines that
AutoInstall is not configured, it defaults to the setup facility.

Configuring Global Parameters
When you first start the setup program, you must configure the global parameters. These parameters are
used for controlling system-wide settings. Complete the following steps to enter the global parameters:
Step 1

Connect a console terminal to the console port, and then boot the router.
The system boots from Flash memory. The following information appears after about 30 seconds. When
you see this information, you have successfully booted your router:
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
Cisco Internetwork Operating System Software
IOS (tm) 7400 Software (C7400-JS-M) Version 12.2
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Fri 19-May-01 13:12 by Biff
Image text-base:0x60008960, data-base:0x617CA000
cisco 7401ASR (NSE) processor (revision A) with 245760K/16384K bytes of memory.
Processor board ID 4294967295
R7000 CPU at 375Mhz, Implementation 39, Rev 3.3, 256KB L2, 2000KB L3 Cache
1 slot ASR midplane, Version 2.0
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
PXF processor tmc has been reset.
8 Ethernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
509K bytes of non-volatile configuration memory.
64256K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
8192K bytes of Flash internal SIMM (Sector size 256K).
Press RETURN to get started!

The first two sections of the configuration script (the banner and the installed hardware) appear only at
initial system startup. On subsequent uses of the setup facility, the script begins with a System
Configuration Dialog as shown in the following example.

Cisco 7401ASR Installation and Configuration Guide

3-12

OL-5419-01 B0

Chapter 3

Starting and Configuring
Configuring a Cisco 7401ASR Router

--- System Configuration Dialog --At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.

Step 2

When asked if you want to enter the initial configuration dialog and see the current interface summary,
enter yes or press Return:
Would you like to enter the initial configuration dialog? [yes]:
First, would you like to see the current interface summary? [yes]:

In the following example, the summary shows a Cisco 7401ASR router at first-time startup; that is,
nothing is configured.
Any interface listed with OK? value "NO" does not have a valid configuration
Interface
ATM1/0
FastEthernet2/0

Step 3

IP-Address
unassigned
unassigned

OK?
NO
NO

Method
unset
unset

Status
down
down

Protocol
down
down

Choose which protocols to support on your interfaces. For Internet Protocol (IP)-only installations, you
can accept the default values for most of the questions. A typical configuration using IP, IPX, and
AppleTalk follows and continues through Step 8:
Configuring global parameters:
Enter host name [Router]:

Step 4

Enter enable secret, enable, and virtual terminal passwords:
The enable secret password is a one-way cryptographic secret
password used instead of the enable password when it exists.
Enter enable secret: barney
The enable password is used when there is no enable secret
password and when using older software and some boot images.
Enter enable password: betty
Enter virtual terminal password: fred

Step 5

The Simple Network Management Protocol (SNMP) is the most widely supported open standard for
network management. It provides a means to access and set configuration and run-time parameters of
routers and communication servers. SNMP defines a set of functions that can be used to monitor and
control network elements.
Enter yes or press Return to accept SNMP management; enter no to refuse it:
Configure SNMP Network Management? [yes]:
Community string [public]:

Step 6

For the following queries, do not enable VINES, LAT, DECnet, CLNS, bridging, XNS, or Apollo:
Configure
Configure
Configure
Configure
Configure
Configure
Configure

Vines? [no]:
LAT? [no]:
DECnet? [no]:
CLNS? [no]:
bridging? [no]:
XNS? [no]:
Apollo? [no]:

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-13

Chapter 3

Starting and Configuring

Configuring a Cisco 7401ASR Router

Step 7

For the following queries, enable routing on AppleTalk and IPX:
Configure AppleTalk? [no]: yes
Multizone networks? [no]: yes
Configure IPX? [no]: yes

Step 8

In most cases you use IP routing. If you are using IP routing, you must also select an interior routing
protocol. You can specify only one of two interior routing protocols to operate on your system using the
setup facility: Interior Gateway Routing Protocol (IGRP) or Routing Information Protocol (RIP).
To configure IP routing, enter yes (the default) or press Return, and then select an interior routing
protocol:
Configure IP? [yes]:
Configure IGRP routing? [yes]:
Your IGRP autonomous system number [1]: 15

The following sample display includes a continuous listing of all configuration parameters selected in
Step 3 through Step 8. Only IP, IPX, and AppleTalk are the selected protocols for this example.
Configuring global parameters:
Enter host name [Router]: router
The enable secret is a one-way cryptographic secret used
instead of the enable password when it exists.
Enter enable secret: barney
The enable password is used when there is no enable secret
and when using older software and some boot images.
Enter enable password: betty
Enter virtual terminal password: fred
Configure SNMP Network Management? [yes]:
Community string [public]:
Configure Vines? [no]:
Configure LAT? [no]:
Configure AppleTalk? [no]: yes
Multizone networks? [no]: yes
Configure DECnet? [no]:
Configure IP? [yes]:
Configure IGRP routing? [yes]:
Your IGRP autonomous system number [1]: 15
Configure RIP routing? [no]:
Configure CLNS? [no]: n
Configure bridging? [no]:
Configure IPX? [no]: yes
Configure XNS? [no]:
Configure Apollo? [no]:

Step 9

Save your settings to NVRAM. (See the “Saving the Running Configuration to NVRAM” section on
page 3-21.) If you do not save the configuration settings you created in the router using configuration
mode and the setup facility, your configuration will be lost th enext time yuou load the router.

Cisco 7401ASR Installation and Configuration Guide

3-14

OL-5419-01 B0

Chapter 3

Starting and Configuring
Configuring a Cisco 7401ASR Router

Configuring the Native Gigabit Ethernet and Fast Ethernet/Ethernet Interfaces
The Cisco 7401ASR router reports both the Fast Ethernet/Ethernet and the Gigabit Ethernet ports as GE
0/0 and GE 0/1. Before configuring either port type, you must first use the media-type interface
command to select the media type, either Gigabit Ethernet (gbic) or Fast Ethernet/Ethernet (rj45).

Changing the Media Type
Step 1

To be able to use a particular media port, use Cisco IOS to select the media type. This is done by using
the media-type interface command:
media-type { gbic | rj45 }
Example:
interface GigabitEthernet 0/0
media-type rj45
end

Step 2

After changing the media type, configure the speed and duplex to appropriately match the new interface
characteristics. Changing the speed and duplex of a Cisco 7401ASR router Gigabit Ethernet interface is
done using the speed and duplex interface commands.

Note

These commands are only applicable when using the RJ-45 media.

speed { 10 | 100 | 1000 | auto }
duplex { full | half | auto }
The following speed/duplex settings are supported:
Media Type
Speed
Duplex
-----------------------------------------------------RJ45
10, 100, auto
full, half, auto
GBIC
ignored (1000)
ignored (full)
(By default on this interface)
-------------------------------------------------------

When using the GBIC media, there is also the additional negotiation auto command that is used to
enable the IEEE 801.1z Gigabit Ethernet (1000 Mbps) autonegotiation protocol.
Step 3

To turn this autonegotiation feature off (it is on by default), issue the interface command no negotiation
auto. This is useful for connecting to other Gigabit Ethernet equipment that does not support 802.1z
autonegotiation.

Note

The negotiation auto feature is not supported when using the media type rj-45 and will be
ignored if implementation is attempted.

If you change from the gbic to rj-45 media, you must set speed and duplex after you have executed the
media-type command to ensure the interface will operate in the correct mode.
The media type GBIC mode will always default to 1000-Mbps, full-duplex operation as this is the only
configuration that is supported in this mode. Any speed or duplex commands are ignored while using
this media type, even if it is present in the configuration (for example, in the show running-config
output).

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-15

Chapter 3

Starting and Configuring

Configuring a Cisco 7401ASR Router

Debugging
Cisco IOS provides two commands to provide information on your interfaces: show interface
GigabitEthernet 0/X (where X is either 0 or 1) and show controllers GigabitEthernet 0/X (where X
is either 0 or 1).
The output of the show interface command is useful for determining the current operating mode of the
interface (speed/duplex/media-type) and the current interface statistics.
The output of the show controller command displays more information specific to the Cisco 7401ASR
router Gigabit Ethernet interface. For example, it shows the detected link status, speed, and duplex, and
also determines the current status of autonegotiation and the link partners’ abilities (if it is an
autonegotiation-capable interface).
The show controller command also displays the current operating state of the driver and the Ethernet
controller hardware. The show controller command is a very powerful debugging aid, especially for
Cisco engineers should you need help in debugging a problem. If you have any problems with your
Gigabit Ethernet interfaces, you will need to provide this information to Cisco for analysis.

Resetting the Interface
Should you have a problem with your interface and you want to try and reset it, use the command:
clear interface GigabitEthernet 0/X (where X is either 0 or 1)

Clearing Counters
Interface counters may be cleared (reset) by using the command:
clear counters GigabitEthernet 0/X (where X is either 0 or 1)

Note

Using this command will not reset the interface.

Configuring Port Adapter Interfaces
Following are the steps for configuring interfaces to allow communication over a LAN or WAN. To
configure the interface parameters, you need your interface network addresses and subnet mask
information. Consult with your network administrator for this information.

Note

See Chapter 4, “Configuring the VPN Acceleration Module,” for instructions on configuring VAM.

Configuring ATM Interfaces
In the following example, an ATM interface in slot 1 is configured for an ATM LAN using IP. Follow
these steps to configure an ATM interface:
Step 1

Using your own addresses and mask at the setup prompts, respond to the prompts as follows:
Configuring interface parameters:
Configuring interface ATM1/0:
Is this interface in use? [yes]:
Configure IP on this interface? [yes]:
IP address for this interface: 1.1.1.10

Cisco 7401ASR Installation and Configuration Guide

3-16

OL-5419-01 B0

Chapter 3

Starting and Configuring
Configuring a Cisco 7401ASR Router

Number of bits in subnet field [0]:
Class C network is 1.1.1.0, 0 subnet bits; mask is /24

Step 2

Determine if you are going to enable IPX on this interface; if you are, enter the unique IPX network
number:
Configure IPX on this interface? [no]: yes
IPX network number [2]:

Step 3

If you are using AppleTalk on the interface, enter yes. Enter yes to configure for extended AppleTalk
networks, and then enter the cable range number. Enter the zone name and any other additional zones
that are associated with your local zone:
Configure AppleTalk on this interface? [no]: yes
Extended AppleTalk network? [no]: yes
AppleTalk starting cable range [0]:

Step 4

Note

Save your settings to NVRAM. (See the “Saving the Running Configuration to NVRAM” section on
page 3-21.) If you do not save the configuration settings you created in the router using configuration
mode and the setup facility, your configuration will be lost th enext time yuou load the router.

If additional ATM interfaces are available in your system, you are prompted for their configurations as
well.

Configuring Fast Ethernet Interfaces
In the following example, a Fast Ethernet interface in slot 1 is configured for a Fast Ethernet LAN using
IP. Follow these steps to configure Fast Ethernet interfaces:
Step 1

Using your own addresses and mask at the setup prompts, respond to the prompts as follows:
Configuring interface parameters:
Configuring interface FastEthernet1/0:
Is this interface in use? [yes]:
Use the 100 Base-TX (RJ-45) connector? [yes]:
Operate in full-duplex mode? [no]:
Configure IP on this interface? [yes]:
IP address for this interface: 1.1.1.20
Number of bits in subnet field [0]:
Class C network is 1.1.1.0, 0 subnet bits; mask is /24

Step 2

Determine if you are going to enable IPX on this interface; if you are, enter the unique IPX network
number:
Configure IPX on this interface? [no]: yes
IPX network number [2]:

Step 3

If you are using AppleTalk on the interface, enter yes. Enter yes to configure for extended AppleTalk
networks, and then enter the cable range number. Enter the zone name and any other additional zones
that are associated with your local zone:
Configure AppleTalk on this interface? [no]: yes
Extended AppleTalk network? [no]: yes
AppleTalk starting cable range [0]:

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-17

Chapter 3

Starting and Configuring

Configuring a Cisco 7401ASR Router

Step 4

Note

Save your settings to NVRAM. (See the “Saving the Running Configuration to NVRAM” section on
page 3-21.) If you do not save the configuration settings you created in the router using configuration
mode and the setup facility, your configuration will be lost th enext time yuou load the router.

If additional Fast Ethernet interfaces are available in your system, you are prompted for their
configurations as well.

Configuring Synchronous Serial Interfaces
Synchronous serial interfaces are configured to allow connection to WANs through a CSU/DSU. In the
following example, a synchronous serial interface in slot 1 is configured for a WAN connection using IP.
Follow these steps to configure synchronous serial interfaces:
Step 1

Using your own addresses and mask at the setup prompts, respond to the prompts as follows:
Configuring interface parameters:
Configuring interface serial 1/0:
Is this interface in use? [yes]:
Configure IP on this interface? [yes]:
IP address for this interface: 1.1.1.30
Number of bits in subnet field [0]:
Class A network is 1.1.1.0, 0 subnet bits; mask is /24

Step 2

Determine if you are going to enable IPX on this interface; if you are, enter the unique IPX network
number:
Configure IPX on this interface? [no]: yes
IPX network number [2]:

Step 3

If you are using AppleTalk on the interface, enter yes. Enter yes to configure for extended AppleTalk
networks, and then enter the cable range number. Enter the zone name and any other additional zones
that are associated with your local zone:
Configure AppleTalk on this interface? [no]: yes
Extended AppleTalk network? [no]: yes
AppleTalk starting cable range [0]:

Step 4

Note

Save your settings to NVRAM. (See the “Saving the Running Configuration to NVRAM” section on
page 3-21.) If you do not save the configuration settings you created in the router using configuration
mode and the setup facility, your configuration will be lost th enext time yuou load the router.

If additional synchronous serial interfaces are available in your system, you are prompted for their
configurations as well.

Cisco 7401ASR Installation and Configuration Guide

3-18

OL-5419-01 B0

Chapter 3

Starting and Configuring
Configuring a Cisco 7401ASR Router

The following sample display includes a continuous listing of all interface configuration parameters
selected for ATM, Fast Ethernet, and synchronous serial interfaces.
Configuring interface parameters:
Configuring interface ATM1/0:
Is this interface in use? [yes]:
Configure IP on this interface? [yes]:
IP address for this interface: 1.1.1.10
Number of bits in subnet field [0]: 0
Class C network is 1.1.1.0, 0 subnet bits; mask is /24
Configure IPX on this interface? [yes]:
IPX network number [2]:
Configure AppleTalk on this interface? [no]: yes
Extended AppleTalk network? [no]: yes
AppleTalk starting cable range [0]:
Configuring interface FastEthernet1/0:
Is this interface in use? [yes]:
Use the 100 Base-TX (RJ-45) connector? [yes]:
Operate in full-duplex mode? [no]:
Configure IP on this interface? [yes]:
IP address for this interface: 1.1.1.20
Number of bits in subnet field [0]:
Class C network is 1.1.1.0, 0 subnet bits; mask is /24
Configure IPX on this interface? [yes]:
IPX network number [2]:
Configure AppleTalk on this interface? [no]: yes
Extended AppleTalk network? [no]: yes
AppleTalk starting cable range [0]:
Configuring interface Serial1/0:
Is this interface in use? [no]: yes
Configure IP on this interface? [no]: yes
Configure IP unnumbered on this interface? [no]:
IP address for this interface: 1.1.1.30
Number of bits in subnet field [0]:
Class A network is 1.0.0.0, 0 subnet bits; mask is 255.0.0.0
Configure IPX on this interface? [no]: yes
IPX network number [2]:
Configure AppleTalk on this interface? [no]: yes
Extended AppleTalk network? [no]:
AppleTalk network number [1]:
The following configuration command script was created:
hostname Router
enable secret 5 $1$u8z3$PMYY8em./8sszhzk78p/Y0
enable password betty
line vty 0 4
password fred
snmp-server community public
!
ip routing
no vines routing
ipx routing
appletalk routing
no apollo routing
no decnet routing
no xns routing
no clns routing
no bridge 1
! Turn off IPX to prevent network conflicts.
interface ATM1/0

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-19

Chapter 3

Starting and Configuring

Configuring a Cisco 7401ASR Router

ip address 1.1.1.10 255.0.0.1
appletalk cable-range 0-0 0.0
appletalk discovery
!
interface FastEthernet1/0
media-type 100BaseX
half-duplex
ip address 1.1.1.20 255.0.0.2
appletalk cable-range 0-0 0.0
appletalk discovery
!
interface serial3/0
ip address 1.1.1.30 255.0.0.3
ip route-cache cbus
no keepalive
!
!
router igrp 15
network 1.0.0.0
!
end
Use this configuration? [yes/no]: yes
Building configuration...
Use the enabled mode ‘configure’ command to modify this configuration.
Press RETURN to get started!

Your router is now minimally configured and ready to use. You can use the setup command if you want
to modify the parameters after the initial configuration. To perform more complex configurations, use
the configure command.
For information on additional interface configuration and specific system configurations, refer to the
modular configuration and modular command reference publications in the Cisco IOS software
configuration documentation set that corresponds to the software release installed on your Cisco
hardware.

Performing a Basic Configuration Using Global Configuration Mode
You can configure a Cisco 7401ASR router manually if you prefer not to use the setup facility or
AutoInstall. Complete the following steps to configure the router manually:
Step 1

Connect a console terminal to the console port.

Step 2

When asked if you want to enter the initial dialog, answer no to go into the normal operating mode of
the router:
Would you like to enter the initial dialog? [yes]: no

Step 3

After a few seconds the user EXEC prompt (Router>) is displayed. Type enable to enter enable mode
(configuration changes can only be made in enable mode):
Router> enable

The prompt changes to the privileged EXEC prompt:
Router#

Cisco 7401ASR Installation and Configuration Guide

3-20

OL-5419-01 B0

Chapter 3

Starting and Configuring
Performing Other Configuration Tasks

Step 4

Enter the config terminal command at the enable prompt to enter configuration mode from the terminal:
Router# config terminal
Enter configuration commands, one per line.
Router(config)#

End with CNTL/Z.

At the Router(config)# prompt, enter the interface type slot/port command to enter the interface
configuration mode:
Router(config)# interface serial slot/port
Router(config-int)#

In either configuration mode, you can now enter any changes to the configuration. Press Ctrl-Z (hold
down the Control key while you press Z) or enter end to exit configuration mode and return to the EXEC
command interpreter.
Step 5

Save your settings to NVRAM. (See the “Saving the Running Configuration to NVRAM” section on
page 3-21.) If you do not save the configuration settings you created in the router using configuration
mode and the setup facility, your configuration will be lost th enext time yuou load the router.

Your router is now minimally configured and will boot with the configuration you have entered. To see
a list of the configuration commands available to you, enter ? at the prompt while in configuration mode.

Saving the Running Configuration to NVRAM
To store the configuration or changes to your startup configuration in NVRAM, enter the copy
running-config startup-config command at the Router# prompt:
Router# copy running-config startup-config

Using this command saves the configuration settings that you created in the router using configuration
mode and the setup facility. If you fail to do this, your configuration will be lost the next time you reload
the router.

Checking the Running Configuration Settings
To check the value of the settings you have entered, enter the show running-config command at the
prompt:

Router#

Router# show running-config

To review changes you make to the configuration, use the EXEC mode show startup-config command
to display the information stored in NVRAM.

Performing Other Configuration Tasks
To make advanced configuration changes after you establish the basic startup configuration for your
router, refer to the modular configuration and modular command reference publications in the Cisco IOS
software configuration documentation set that corresponds to the software release installed on your
Cisco hardware. These publications contain additional information on using the configure command.
The configuration publications also provide information about the following tasks:

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-21

Chapter 3

Starting and Configuring

Replacing or Recovering a Lost Password

•

Understanding and working with the user interface on your router

•

Booting and rebooting the router

•

Setting the configuration register—see the Cisco IOS Configuration Fundamentals Configuration
Guide

•

Loading configuration files or system images using remote copy protocol (rcp) or Trivial File
Transfer Protocol (TFTP)

•

Reloading the operating system

Replacing or Recovering a Lost Password
This section describes how to recover a lost enable or console login password, and how to replace a lost
enable secret password on your Cisco 7401ASR router.

Note

It is possible to recover the enable or console login password. The enable secret password is encrypted,
however, and must be replaced with a new enable secret password.

Overview of the Password Recovery Procedure
Following is an overview of the steps in the password recovery procedure:
Step 1

If you can log in to the router, enter the show version command to determine the existing configuration
register value.

Step 2

Press the Break key to get to the bootstrap program prompt (ROM monitor). You might need to reload
the system image by power cycling the router.

Step 3

Change the configuration register so the following functions are enabled:
a.

Break

b.

Ignore startup configuration

c.

Boot from Flash memory

Note

Step 4

The key to recovering a lost password is to set the configuration register bit 6 (0x0040) so that
the startup configuration (usually in NVRAM) is ignored. This allows you to log in without
using a password and to display the startup configuration passwords.

Power cycle the router by turning power off and then back on.

Note

After powering off the router, wait at least 30 seconds before powering it on again.

Step 5

Log in to the router and enter the privileged EXEC mode.

Step 6

Enter the show startup-config command to display the passwords.

Cisco 7401ASR Installation and Configuration Guide

3-22

OL-5419-01 B0

Chapter 3

Starting and Configuring
Replacing or Recovering a Lost Password

Step 7

Recover or replace the displayed passwords.

Step 8

Change the configuration register back to its original setting.

Note

To recover a lost password if the Break function is disabled on the router, you must have physical access
to the router.

Details of the Password Recovery Procedure
Complete the following steps to recover or replace a lost enable, enable secret, or console login
password:
Step 1

Attach an ASCII terminal to the console port on your router.

Step 2

Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 2 stop bits (9600 8N2).

Step 3

If you can log in to the router as a nonprivileged user, enter the show version command to display the
existing configuration register value. Note the value for use later and proceed to Step 6. If you cannot
log in to the router at all, go to the next step.

Step 4

Press the Break key or send a Break from the console terminal. If Break is enabled, the router enters the
ROM monitor, indicated by the ROM monitor prompt (rommon1>). Proceed to Step 6. If Break is disabled,
power cycle the router (turn the router off or unplug the power cord, and then restore power). Then
proceed to Step 5.

Step 5

Within 60 seconds of restoring the power to the router, press the Break key or send a Break. This action
causes the router to enter the ROM monitor and display the ROM monitor prompt ( rommon1>).

Step 6

Set the configuration register using the configuration register utility; enter the confreg command at the
ROM monitor prompt as follows:
rommon1> confreg

Step 7

Answer yes to the enable “ignore system config info?” question, and note the current configuration
register settings.

Step 8

Initialize the router by entering the reset command as follows:
rommon2> reset

The router initializes, the configuration register is set to 0x142, and the router boots the system image
from Flash memory and enters the System Configuration Dialog prompt as follows:
--- System Configuration Dialog --

Step 9

Enter no in response to the System Configuration Dialog prompts until the following message is
displayed:
Press RETURN to get started!

Step 10

Press Return. The user EXEC prompt is displayed as follows:
Router>

Step 11

Enter the enable command to enter privileged EXEC mode. Then enter the show startup-config
command to display the passwords in the configuration file as follows:

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-23

Chapter 3

Starting and Configuring

Replacing or Recovering a Lost Password

Router# show startup-config

Step 12

Scan the configuration file display looking for the passwords (the enable passwords are usually near the
beginning of the file, and the console login or user EXEC password is near the end). The passwords
displayed look something like this:
enable secret 5 $1$ORPP$s9syZt4uKn3SnpuLDrhuei
enable password 23skiddoo
.
.
line con 0
password onramp

The enable secret password is encrypted and cannot be recovered; it must be replaced. The enable and
console login passwords may be encrypted or clear text. Proceed to the next step to replace an enable
secret, console login, or enable password. If there is no enable secret password, note the enable and
console login passwords, if they are not encrypted, and proceed to Step 17.

Caution

Step 13

Do not execute the next step unless you have determined you must change or replace the enable, enable
secret, or console login passwords. Failure to follow the steps as shown might cause you to erase your
router configuration
Enter the configure memory command to load the startup configuration file into running memory. This
action allows you to modify or replace passwords in the configuration.
Router# configure memory

Step 14

Enter the privileged EXEC command configure terminal to enter configuration mode:
Hostname# configure terminal

Step 15

Change all three passwords using the following commands:
Hostname(config)# enable secret newpassword1
Hostname(config)# enable password newpassword2
Hostname(config)# line con 0
Hostname(config-line)# password newpassword3

Change only the passwords necessary for your configuration. You can remove individual passwords by
using the no form of the above commands. For example, entering the no enable secret command
removes the enable secret password.
Step 16

You must configure all interfaces to be not administratively shut down as follows:
Hostname(config)# interface fastethernet 0/0
Hostname(config-int)# no shutdown

Enter the equivalent commands for all interfaces that were originally configured. If you omit this step,
all interfaces are administratively shut down and unavailable when the router is restarted.
Step 17

Use the config-register command to set the configuration register to the original value noted in Step 3
or Step 8, or to the factory default value 0x2102 as follows:
Hostname(config)# config-register 0x2102

Step 18

Press Ctrl-Z (hold down the Control key while you press Z) or enter end to exit configuration mode
and return to the EXEC command interpreter.

Cisco 7401ASR Installation and Configuration Guide

3-24

OL-5419-01 B0

Chapter 3

Starting and Configuring
Viewing Your System Configuration

Caution

Do not execute the next step unless you have changed or replaced a password. If you skipped Step 13
through Step 16, skip to Step 20. Failure to observe this caution causes you to erase your router
configuration file.

Step 19

Enter the copy running-config startup-config command to save the new configuration to NVRAM.

Step 20

Enter the reload command to reboot the router.

Step 21

Log in to the router with the new or recovered passwords.

This completes the steps for recovering or replacing a lost enable, enable secret, or console login
password.

Viewing Your System Configuration
You can use the show version, show hardware, and the show diag commands to view information
specific to the hardware configuration of your Cisco 7401ASR router.
Use the show version (or show hardware) command to display the system hardware, processor and the
number of interfaces installed, the software version, the names and sources of configuration files, and
the boot images.
The following sample output of the show version command shows a Cisco 7401ASR running Cisco IOS
Release 12.2(1)DD:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7400 Software (C7400-JS-M), Version 12.2(V99.1)
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Sat 19-May-01 11:31 by
Image text-base:0x60008960, data-base:0x617CA000
ROM:System Bootstrap, Version 12.2(1r)DD1, RELEASE SOFTWARE (fc1)
BOOTFLASH:7400 Software (C7400-KBOOT-M),
12.2(20010427:125)
router uptime is 17 hours, 2 minutes
System returned to ROM by reload at 01:09:49 UTC Sat Jan 1 2000
System image file is "tftp://000.000.000.000//tftpboot/biff/122_1_DX/c7400mz.V122_1_DX.5.19.01"
cisco 7401ASR (NSE) processor (revision A) with 245760K/16384K bytes of memory
Processor board ID 4294967295
R7000 CPU at 375Mhz, Implementation 39, Rev 3.3, 256KB L2, 2000KB L3 Cache
1 slot ASR midplane, Version 2.0
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
PXF processor tmc is running.
8 Ethernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
509K bytes of non-volatile configuration memory.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-25

Chapter 3

Starting and Configuring

Viewing Your System Configuration

64256K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x100

Use the show diag command to determine what type of Fast Ethernet/Ethernet port is active or what type
of port adapter is installed in your Cisco 7401ASR router. You can also use the show diag slot command
to display information about the port adapter slot.
The following example shows the show diag command output from a Cisco 7401ASR router. Note that
slot 0 is reserved for the native Gigabit Ethernet and Fast Ethernet/Ethernet ports:

Note

Both native Gigabit Ethernet and Fast Ethernet/Ethernet ports are reported as Gigabit Ethernet ports. To
select either Gigabit Ethernet or Fast Ethernet/Ethernet ports, use the media-type command. See the
“Configuring the Native Gigabit Ethernet and Fast Ethernet/Ethernet Interfaces” section on page 3-15.
Router# show diag
pxf:tmc type TMC ASIC revision 3
ucode:filename 'system:pxf/ucode0' revision 1.1
state: is running, number of starts 1
uptime:2d04h
Memory Configuration:
Bank Name
Total
Reserved
In-use
Free
tmc internal memory column 0
16 Kb
6656 bytes
0 bytes 9728 bytes
tmc column 0 memory bank 0
32 Mb
26 Mb
0 bytes 5703 Kb
tmc internal memory column 1
16 Kb
512 bytes
0 bytes
15 Kb
tmc column 1 memory bank 0
32 Mb
480 Kb
352 Kb
31 Mb
tmc internal memory column 2
16 Kb
1536 bytes 512 bytes
14 Kb
tmc column 2 memory bank 0
32 Mb
23 Kb
32 Kb
31 Mb
tmc internal memory column 3
16 Kb
10 Kb
0 bytes 5632 bytes
tmc column 3 memory bank 0
32 Mb
471 Kb
0 bytes
31 Mb
Slot 0:
C7401 GigabitEthernet I/O Controller Port adapter, 2 ports
Port adapter is analyzed
Port adapter insertion time 2d04h ago
EEPROM contents at hardware discovery:
Hardware Revision
:0.0
EEPROM format version 4
EEPROM contents (hex):
0x00:04 FF 40 02 80 41 00 00 FF FF FF FF FF FF FF FF
0x10:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x20:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x40:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x50:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x60:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x70:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
Slot 1:
Channelized T1 (CSU) Port adapter, 8 ports
Port adapter is analyzed
Port adapter insertion time 00:29:09 ago
EEPROM contents at hardware discovery:
Hardware revision 1.0
Board revision A0
Serial number
21713084
Part number
73-2488-07
Test history
0x0
RMA number
00-00-00
EEPROM format version 1
EEPROM contents (hex):
0x20:01 72 01 00 01 4B 50 BC 49 09 B8 07 00 00 00 00
0x30:50 00 00 00 00 09 23 00 FF FF FF FF FF FF FF FF

Cisco 7401ASR Installation and Configuration Guide

3-26

OL-5419-01 B0

Chapter 3

Starting and Configuring
Performing Complex Configurations

For specific information on the show version, show diag, and other software commands, refer to the
modular configuration and modular command reference publications in the Cisco IOS software
configuration documentation set that corresponds to the software release installed on your Cisco
hardware.

Performing Complex Configurations
After you have installed your Cisco 7401ASR router hardware, checked all external connections, turned
on the system power, allowed the system to boot up, and minimally configured the system, you might
need to perform more complex configurations, which are beyond the scope of this publication.
For information on configuring VPN on the VPN Acceleration Module, see Chapter 4, “Configuring the
VPN Acceleration Module.” For other specific information on system and interface configuration, refer
to the modular configuration and modular command reference publications in the Cisco IOS software
configuration documentation set that corresponds to the software release installed on your Cisco
hardware.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

3-27

Chapter 3

Starting and Configuring

Performing Complex Configurations

Cisco 7401ASR Installation and Configuration Guide

3-28

OL-5419-01 B0

C H A P T E R

4

Configuring the VPN Acceleration Module
This chapter contains the information and procedures needed to configure the VPN Acceleration Module
(VAM) in Cisco 7401ASR routers. This chapter contains the following sections:
•

Overview, page 4-1

•

Configuration Tasks, page 4-1

Overview
The VAM provides encryption services for Cisco 7401ASR routers. You must configure IPSec on the
router for the VAM to provide encryption services.

Note

There are no interfaces to configure on the VAM.
This chapter contains basic configuration information for enabling encryption and IPSec tunneling
services. Refer to the Cisco Enterprise VPN Configuration Guide, the VPN Acceleration Module
Installation and Configuration Guide, the “IP Security and Encryption” part of the Security
Configuration Guide and the Security Command Reference for detailed configuration information on
IPSec, IKE, and CA.

Configuration Tasks
If the ENABLE LED is on on power up, the VAM is fully functional and does not require any
configuration commands. However, for the VAM to provide encryption services, you must complete the
steps in the following sections:

Note

•

Configuring IKE, page 4-2 (required)

•

Configuring IPSec, page 4-3 (required)

You can configure a static crypto map, create a dynamic crypto map, or add a dynamic crypto map into
a static crypto map. Refer to Chapter 3, “Site-to-Site and Extranet VPN Business Scenarios,” of the
online publication Cisco IOS Enterprise VPN Configuration Guide.
Optionally, you can configure Certification Authority (CA) interoperability (refer to the “Configuring
Certification Authority Interoperability” chapter in the Security Configuration Guide).

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

4-1

Chapter 4

Configuring the VPN Acceleration Module

Configuration Tasks

Using the EXEC Command Interpreter
You modify the configuration of your router through the software command interpreter called the EXEC
(also called enable mode). You must enter the privileged level of the EXEC command interpreter with
the enable command before you can use the configure command to configure a new interface or change
the existing configuration of an interface. The system prompts you for a password if one has been set.
The system prompt for the privileged level ends with a pound sign (#) instead of an angle bracket (>).
At the console terminal, use the following procedure to enter the privileged level:
Step 1

At the user-level EXEC prompt, enter the enable command. The EXEC prompts you for a
privileged-level password as follows:
Router> enable
Password:

Step 2

Enter the password (the password is case sensitive). For security purposes, the password is not displayed.
When you enter the correct password, the system displays the privileged-level system prompt (#):
Router#

This completes the procedure for entering the privileged level of the EXEC command interpreter.

Configuring IKE
If you do not specify a value for a parameter, the default value is assigned. For information on default
values, refer to the “IP Security and Encryption” chapter of the Security Command Reference
publication.
To configure a policy, use the following commands, starting in global configuration mode:
Command

Purpose

Step 1

crypto isakmp policy priority Identifies the policy to create, and enters config-isakmp
command mode.

Step 2

encryption {des | 3des}

Specifies the encryption algorithm.

Step 3

group {1 | 2}

Specifies the Diffie-Hellman group identifier.

For detailed information on creating IKE policies, refer to the “Configuring Internet Key Exchange
Security Protocol” chapter in the Security Configuration Guide publication.

Cisco 7401ASR Installation and Configuration Guide

4-2

OL-5419-01 B0

Chapter 4

Configuring the VPN Acceleration Module
Configuration Tasks

Configuring IPSec
After you have completed IKE configuration, configure IPSec at each participating IPSec peer. This
section contains basic steps to configure IPSec and includes the tasks discussed in the following sections:
•

Creating Crypto Access Lists, page 4-3

•

Defining Transform Sets, page 4-4

•

Creating Crypto Map Entries, page 4-5

•

Verifying the Configuration, page 4-6

For detailed information on configuring IPSec, refer to the “Configuring IPSec Network Security”
chapter in the Security Configuration Guide publication.

Creating Crypto Access Lists
Crypto access lists define which IP traffic will be protected by encryption.

Note

IKE uses UDP port 500. The IPSec Encapsulation Security Protocol (ESP) and Authentication Header
(AH) protocols use protocol numbers 50 and 51. Ensure that your interface access lists are configured
so that protocol numbers 50, 51, and UDP port 500 traffic are not blocked at interfaces used by IPSec.
In some cases you might need to add a statement to your access lists to explicitly permit this traffic.
To create crypto access lists, use the following commands in global configuration mode:
Step

Command

Purpose

Step 1

access-list access-list-number {deny |
permit} protocol source
source-wildcard destination
destination-wildcard [log]
or
ip access-list extended name

Specifies conditions to determine which IP
packets are protected.1 (Enable or disable
encryption for traffic that matches these
conditions.)
We recommend that you configure “mirror
image” crypto access lists for use by IPSec and
that you avoid using the any keyword.

Step 2

Add permit and deny statements as
appropriate.

Adds permit or deny statements to access lists.

Step 3

end

Exits the configuration command mode.

1. You specify conditions using anIP access list designated by either a number or a name. The access-list command designates
a numbered extended access list; the ip access-list extended command designates a named access list.

For detailed information on configuring access lists, refer to the “Configuring IPSec Network Security”
chapter in the Security Configuration Guide publication.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

4-3

Chapter 4

Configuring the VPN Acceleration Module

Configuration Tasks

Defining Transform Sets
A transform set is a combination of security protocols and algorithms. During the IPSec security
association negotiation, peers agree to use a specific transform set to protect a particular data flow.
To define a transform set, use the following commands, starting in global configuration mode:
Command

Purpose

Step 1

crypto ipsec transform-set
Defines a transform set and enters crypto
transform-set-name transform1 [transform2 transform configuration mode.
[transform3]]
Note
Complex rules define which entries
you can use for the transform
arguments. These rules are explained
in the command description for the
crypto ipsec transform-set
command, and Table 4-1 provides a
list of allowed transform
combinations.

Step 2

mode [tunnel | transport]

Changes the mode associated with the
transform set. The mode setting is applicable
only to traffic whose source and destination
addresses are the IPSec peer addresses; it is
ignored for all other traffic. (All other traffic
is in tunnel mode only.)

Step 3

end

Exits the crypto transform configuration
mode to enabled mode.

Step 4

clear crypto sa
or
clear crypto sa peer {ip-address |
peer-name}
or
clear crypto sa map map-name
or
clear crypto sa spi destination-address
protocol spi

Clears existing IPSec security associations so
that any changes to a transform set take effect
on subsequently established security
associations (SAs). (Manually established
SAs are reestablished immediately.)
Using the clear crypto sa command without
parameters clears out the full SA database,
which clears out active security sessions. You
may also specify the peer, map, or entry
keywords to clear out only a subset of the SA
database.

Table 4-1 shows allowed transform combinations.
Table 4-1

Allowed Transform Combinations

AH Transform1

ESP Encryption Transform1

ESP Authentication Transform2
Transform

Transform

Description

Transform

Description

ah-md5-hmac

AH with MD5
(HMAC variant)
authentication
algorithm

esp-3des

ESP with 168-bit Triple esp-md5-hmac
DES encryption
algorithm

Description

ESP with MD5
(HMAC variant)
authentication
algorithm

Cisco 7401ASR Installation and Configuration Guide

4-4

OL-5419-01 B0

Chapter 4

Configuring the VPN Acceleration Module
Configuration Tasks

Table 4-1

Allowed Transform Combinations (continued)

AH Transform1
ah-sha-hmac

AH with SHA
(HMAC variant)
authentication
algorithm

ESP Encryption Transform1

ESP Authentication Transform2

esp-des

ESP with 56-bit DES
encryption algorithm

esp-sha-hmac

esp-null

ESP transform without
cipher

ESP with SHA
(HMAC variant)
authentication
algorithm

1. Pick one transform option.
2. Pick one transform option, but only if you selected esp-null or ESP encrypting transform.

Creating Crypto Map Entries
To create crypto map entries that use IKE to establish the security associations, use the following
commands, starting in global configuration mode:
Command

Purpose

Step 1

crypto map map-name seq-num
ipsec-isakmp

Creates the crypto map and enters crypto map
configuration mode.

Step 2

match address access-list-id

Specifies an extended access list. This access
list determines which traffic is protected by
IPSec and which is not.

Step 3

set peer {hostname | ip-address}

Specifies a remote IPSec peer. This is the peer
to which IPSec-protected traffic can be
forwarded.
Repeat for multiple remote peers.

Step 4

set transform-set transform-set-name1
[transform-set-name2...transform-set-na
me6]

Specifies which transform sets are allowed for
this crypto map entry. Lists multiple transform
sets in order of priority (highest priority first).

Step 5

end

Exits crypto map configuration mode.

Step 6

Repeat these steps to create additional crypto map entries as required.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

4-5

Chapter 4

Configuring the VPN Acceleration Module

Configuration Tasks

Verifying the Configuration
Some configuration changes take effect only after subsequent security associations are negotiated. For
the new settings to take effect immediately, clear the existing security associations.
To clear (and reinitialize) IPSec security associations, use one of the commands in Table 4-2 in global
configuration mode:
Table 4-2

Commands to Clear IPSec Security Associations

Command

Purpose

clear crypto sa
or
clear crypto sa peer {ip-address | peer-name}
or
clear crypto sa map map-name
or
clear crypto sa spi destination-address protocol
spi

Clear IPSec security associations (SAs).
Using the clear crypto sa command without
parameters clears out the full SA database, which
clears out active security sessions. You may also
specify the peer, map, or spi keywords to clear
out only a subset of the SA database.

The following steps provide information on verifying your configurations:
Step 1

Enter the show crypto ipsec transform-set command to view your transform set configuration:
Router# show crypto ipsec transform-set
Transform set combined-des-md5: {esp-des esp-md5-hmac}
will negotiate = {Tunnel,},
Transform set t1: {esp-des esp-md5-hmac}
will negotiate = {Tunnel,},
Transform set t100: {ah-sha-hmac}
will negotiate = {Transport,},
Transform set t2: {ah-sha-hmac}
will negotiate = {Tunnel,},
{esp-des}
will negotiate = {Tunnel,},

Step 2

Enter the show crypto map [interface interface | tag map-name] command to view your crypto map
configuration:
Router# show crypto map
Crypto Map: "router-alice" idb: Ethernet0 local address: 172.21.114.123
Crypto Map "router-alice" 10 ipsec-isakmp
Peer = 172.21.114.67
Extended IP access list 141
access-list 141 permit ip
source: addr = 172.21.114.123/0.0.0.0
dest:
addr = 172.21.114.67/0.0.0.0
Current peer: 172.21.114.67
Security-association lifetime: 4608000 kilobytes/120 seconds
PFS (Y/N): N
Transform sets={t1,}

Step 3

Enter the show crypto ipsec sa [map map-name | address | identity | detail | interface] command to
view information about IPSec security associations.
Router# show crypto ipsec sa
interface: Ethernet0
Crypto map tag: router-alice, local addr. 172.21.114.123
local ident (addr/mask/prot/port): (172.21.114.123/255.255.255.255/0/0)

Cisco 7401ASR Installation and Configuration Guide

4-6

OL-5419-01 B0

Chapter 4

Configuring the VPN Acceleration Module
Configuration Tasks

remote ident (addr/mask/prot/port): (172.21.114.67/255.255.255.255/0/0)
current_peer: 172.21.114.67
PERMIT, flags={origin_is_acl,}
#pkts encaps: 10, #pkts encrypt: 10, #pkts digest 10
#pkts decaps: 10, #pkts decrypt: 10, #pkts verify 10
#send errors 10, #recv errors 0
local crypto endpt.: 172.21.114.123, remote crypto endpt.: 172.21.114.67
path mtu 1500, media mtu 1500
current outbound spi: 20890A6F
inbound esp sas:
spi: 0x257A1039(628756537)
transform: esp-des esp-md5-hmac,
in use settings ={Tunnel,}
slot: 0, conn id: 26, crypto map: router-alice
sa timing: remaining key lifetime (k/sec): (4607999/90)
IV size: 8 bytes
replay detection support: Y
inbound ah sas:
outbound esp sas:
spi: 0x20890A6F(545852015)
transform: esp-des esp-md5-hmac,
in use settings ={Tunnel,}
slot: 0, conn id: 27, crypto map: router-alice
sa timing: remaining key lifetime (k/sec): (4607999/90)
IV size: 8 bytes
replay detection support: Y
outbound ah sas:
interface: Tunnel0
Crypto map tag: router-alice, local addr. 172.21.114.123
local ident (addr/mask/prot/port): (172.21.114.123/255.255.255.255/0/0)
remote ident (addr/mask/prot/port): (172.21.114.67/255.255.255.255/0/0)
current_peer: 172.21.114.67
PERMIT, flags={origin_is_acl,}
#pkts encaps: 10, #pkts encrypt: 10, #pkts digest 10
#pkts decaps: 10, #pkts decrypt: 10, #pkts verify 10
#send errors 10, #recv errors 0
local crypto endpt.: 172.21.114.123, remote crypto endpt.: 172.21.114.67
path mtu 1500, media mtu 1500
current outbound spi: 20890A6F
inbound esp sas:
spi: 0x257A1039(628756537)
transform: esp-des esp-md5-hmac,
in use settings ={Tunnel,}
slot: 0, conn id: 26, crypto map: router-alice
sa timing: remaining key lifetime (k/sec): (4607999/90)
IV size: 8 bytes
replay detection support: Y
inbound ah sas:
outbound esp sas:
spi: 0x20890A6F(545852015)
OL-5419-01 B0transform: esp-des esp-md5-hmac,
in use settings ={Tunnel,}
slot: 0, conn id: 27, crypto map: router-alice
sa timing: remaining key lifetime (k/sec): (4607999/90)
IV size: 8 bytes
replay detection support: Y
outbound ah sas:

For a detailed description of the information displayed by the show commands, refer to the “IP Security
and Encryption” chapter of the Security Command Reference publication. For more information on the
VAM, see the VPN Acceleration Module Installation and Configuration Guide.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

4-7

Chapter 4

Configuring the VPN Acceleration Module

Configuration Tasks

Cisco 7401ASR Installation and Configuration Guide

4-8

OL-5419-01 B0

C H A P T E R

5

Troubleshooting
Your Cisco 7401ASR router went through extensive testing before leaving the factory. However, if you
encounter problems starting the router, use the information in this chapter to help isolate the cause of the
problems. This chapter contains the following sections:
•

Troubleshooting Overview, page 5-1

•

Problem Solving Using a Subsystems Approach, page 5-2

•

Upgrading the Boot Helper (Boot Loader) Image, page 5-7

•

PXF Troubleshooting Information, page 5-8

The procedures in this chapter assume that you are troubleshooting the initial system startup, and that
your router is in the original factory configuration. If you have removed or replaced components or
changed any default settings, the recommendations in this chapter might not apply. Make sure to review
the safety warnings listed in the publication Cisco 7401ASR Regulatory Compliance and Safety
Information that accompanied your Cisco 7401ASR router before using the troubleshooting procedures
in this chapter.

Troubleshooting Overview
This section describes the troubleshooting methods used in this chapter and describes how the
Cisco 7401ASR router is divided into subsystems for more efficient problem solving. If you are unable
to easily solve the problem, contact a customer service representative for assistance and further
instructions. Provide the representative with the following information:
•

Date you received the router

•

Chassis serial number

•

Type of software and release number

•

Brief description of the problem you are having

•

Brief explanation of the steps you have taken to isolate and resolve the problem

•

Maintenance agreement or warranty information

The following table shows the general troubleshooting strategy described in this appendix. Refer to this
table, as necessary, to follow the steps to isolate problems to a specific subsystem; resolve the problem
if possible.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

5-1

Chapter 5

Troubleshooting

Problem Solving Using a Subsystems Approach

Action

Yes

No

Step 1

Turn power on. Go to Step 2.

—

—

Step 2

Green STATUS LED on?

Go to Step 4.

Troubleshoot power system, and go
to Step 3.

Step 3

Green STATUS LED on?

Go to Step 4.

Obtain technical assistance.

Step 4

Fans operating?

Go to Step 6.

Troubleshoot cooling subsystem,
and go to Step 5.

Step 5

Fans operating?

Go to Step 6.

Obtain technical assistance.

Step 6

GBIC ENABLE LEDs and FE (100 Mbps) LEDs on?

Go to Step 8.

Check all cable connections and
restart system. Check that the GBIC
is fully seated. Go to Step 7.

Step 7

GBIC ENABLE LEDs and FE (100 Mbps) LEDs on?

Go to Step 8.

Obtain technical assistance

Step 8

Port adapter ENABLE LEDs on?

Go to Step 10.

Reseat port adapters and restart
system. Go to Step 9.

Step 9

Port adapter ENABLE LEDs on?

Go to Step 10.

Obtain technical assistance.

Step 10

System startup successful.

—

—

In addition to following the subsystems approach to troubleshooting, Cisco Registered Direct users can
access troubleshooting tools at http://www.cisco.com/kobayashi/support/tac/tools_az.shtml.

Problem Solving Using a Subsystems Approach
The key to solving problems with the system is isolating the problem to a specific subsystem. The first
step in solving startup problems is to compare what the system is doing to what it should be doing.
Because a startup problem is usually caused by a single component, it is more efficient to first isolate
the problem to a subsystem rather than troubleshoot each component in the system. For these
troubleshooting procedures, consider the following subsystems:
•

Power subsystem—This subsystem comprises the power supply, the external power cable, and the
system board.

•

Cooling subsystem—The fans should be operating whenever system power is on. Contact your
customer service representative if you determine a fan is not functioning properly.

•

Processor subsystem—This subsystem includes the processing and input/output functions, the port
adapter or service adapter, and system memory and management functions. The ENABLE LED on
the port adapter indicates if the port adapter is initialized. A port adapter that is partially installed
can cause the system to pause indefinitely and reload.

The following sections help you isolate a problem to one of these subsystems and direct you to the
appropriate troubleshooting section.

Cisco 7401ASR Installation and Configuration Guide

5-2

OL-5419-01 B0

Chapter 5

Troubleshooting
Problem Solving Using a Subsystems Approach

Identifying Startup Problems
Startup problems are commonly due to the source power or to a port adapter or service adapter that is
dislodged from the system board. Although an over temperature condition is unlikely at initial startup,
the environmental monitoring functions are included in this chapter because they also monitor internal
voltages.
When you start up the router for the first time, you should observe the startup sequence described in the
“Starting the System and Observing Initial Conditions” section on page 3-9 in Chapter 3, “Starting and
Configuring.” This section contains a more detailed description of the normal startup sequence and
describes the steps to take if the system does not perform that sequence as expected.
LEDs indicate all system states in the startup sequence. By checking the state of the LEDs, you can
determine when and where the system failed in the startup sequence. Use the following descriptions to
isolate the problem to a subsystem, and then proceed to the appropriate sections to try to resolve the
problem.
When you start up the system by turning on the power supply switch, the following should occur:
•

You should immediately hear the fans operating. If not, proceed to the “Troubleshooting the Cooling
Subsystem” section on page 5-5. If you determine that the power supply is functioning normally and
that a fan is faulty, contact a customer service representative. If a fan does not function properly at
initial startup, there are no installation adjustments that you should make.

•

The STATUS LED should come on. As the system boots to ROM monitor state, the STATUS LED
is amber. The STATUS LED turns green when the system boots to the Cisco IOS state. If the system
does not boot properly, call your local service representative.

•

The native GBIC ENABLE and 100 Mbps LEDs should come on as follows:
– The 100 Mbps LED comes on and indicates that a Fast Ethernet port (0 or 1) is initialized and

enabled for operation by the system. This LED comes on during a successful router boot and
remains on during normal operation of the router. If this LED remains off when you start the
router, it is probably a problem with the Fast Ethernet port. Consult the table on page 5-2.
– The GBIC ENABLE LED comes on and indicates that a GBIC port (0 or 1) is initialized and

enabled for operation by the system. This LED comes on during a successful router boot and
remains on during normal operation of the router.
If this LED remains off when you start the router, it is probably a problem with the Gigabit
Ethernet port. Consult the table on page 5-2.
– The GBIC LINK LED comes on only when a router Gigabit Ethernet port (0 or 1) is receiving

a carrier signal from the network. This LED remains off during normal operation of the router
unless there is an incoming carrier signal, and does not indicate startup problems.
– The FE LINK LED comes on only when a router Fast Ethernet port (0 or 1) is receiving a carrier

signal from the network. This LED remains off during normal operation of the router unless
there is an incoming carrier signal, and does not indicate startup problems.
•

The ENABLED LED on the port adapter or service adapter comes on when the processor completes
its initialization of the adapter for operation. The ENABLED LED indicates that the adapter is
receiving power and has been recognized by the processor; it does not indicate the state of the
individual interfaces on the adapters. If an ENABLED LED fails to come on, proceed to the
“Upgrading the Boot Helper (Boot Loader) Image” section on page 5-7.

•

When all LEDs come on to indicate that the system has booted successfully, the initial system
banner should be displayed on the console screen. If it is not displayed, see Appendix A,
“Specifications,” the “Console and Auxiliary Port Signals and Pinouts” section on page A-8 to
verify that the terminal is set correctly and that it is properly connected to the console port.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

5-3

Chapter 5

Troubleshooting

Problem Solving Using a Subsystems Approach

Troubleshooting the Power Subsystem
Check the following to help isolate a problem with the power subsystem:

Note

Table 5-1

If the system powers off, wait at least one minute before manually rebooting the system, or it will pause
indefinitely.

Troubleshooting the Power Subsystem

Symptom

Possible Cause

Possible Solution

System begins power on,
amber STATUS LED
comes on.

System has failed to boot Cisco IOS,
turning the STATUS LED green.

Power off, and reboot the system. Check to be sure
you are using the correct Cisco IOS release. If
Cisco IOS does not boot, and the green STATUS
LED is not displayed, contact a service
representative.

System does not power
on.

AC power cable not fully seated at system
or at the wall outlet (power source).

Turn the router power switch to the off position and
reseat the AC power cable at the system or at the
wall outlet (power source).

DC power cable not turned on at the panel
board of the circuit breaker.

Turn the router power switch to the off position and
locate the circuit breaker on the panel board that
services the DC circuit, switch the circuit breaker
to the on position.

Power source is faulty.

Turn the switch off, connect the power cable to
another power source, if available, and turn the
router power switch back on.

Faulty power cable.

Turn the switch to the off position, remove the
cable and replace it.

Faulty power supply.

If the system still fails to come up when the power
supply is connected to a different power source
with a new power cable, the power supply is
probably faulty. Contact a service representative.

Power supply failure.

Contact a service representative.

System powers off, no
STATUS LED, and no
operating fans.

Cisco 7401ASR Installation and Configuration Guide

5-4

OL-5419-01 B0

Chapter 5

Troubleshooting
Problem Solving Using a Subsystems Approach

Troubleshooting the Cooling Subsystem
Check the following to help isolate a problem with the cooling subsystem:
Table 5-2

Troubleshooting the Cooling Subsystem

Symptom

Possible Cause

Possible Solution

System displays the following message:

One or more fans are not operating.

Contact a service
representative.

Router: 00:03:46:%ENVM-3-BLOWER:Fan 2 may have
failed

System shuts down, some fans may or may not
continue to rotate, and this error message is
displayed:
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor
initiated shutdown

This error message indicates that the system has
detected an overtemperature condition or
out-of-tolerance power condition inside the chassis.

•

One or more fans are not operating.

•

The fans are operating too slowly.

•

The power supply is not operating.

To determine if the fans are operating, listen
for them. In noisy environments, place your
hand on the rear of the chassis to feel if air is
being forced out the vents.

Heated exhaust air from other equipment is
entering the router’s inlet vents.

System shuts down and this error message
is displayed:
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor
initiated shutdown

This error message indicates that the system has
detected an overtemperature condition or
out-of-tolerance power condition inside the chassis.
Note

Contact a service
representative.

Move other
equipment or the
router to ensure
proper airflow.

Contact a service
The error message could indicate a faulty
component or temperature sensor. Before the representative.
system shuts down, use the show
environment or show environment table
command to display the internal chassis
environment. See Chapter 3, “Starting and
Configuring,” the “Reporting Functions”
section on page 3-5 for descriptions of the
show environment and show environment
table commands.

The system fans may continue to operate
although the system shuts down.
If an environmental shutdown results from an If the system still fails
out-of-tolerance power condition, the system to come up when the
shuts down.
power supply is
connected to a
different power
source with a new
power cable, the
power supply is
probably faulty.
Contact a service
representative.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

5-5

Chapter 5

Troubleshooting

Problem Solving Using a Subsystems Approach

Troubleshooting the I/O Subsystem
The procedures in this section assume that you have not made changes to your configuration file.
If the Cisco 7401ASR router I/O LEDs do not go on as expected (see the “Identifying Startup Problems”
section on page 5-3), check the following items to help isolate the problem:
Table 5-3

Troubleshooting the I/O Subsystem

Symptom

Possible Cause

Possible Solution

LEDs remain off when the system power Power supply or
switch is turned on.
cooling subsystem is
faulty.

If the LEDs stay off, first see the “Troubleshooting the
Power Subsystem” section on page 5-4 and the
“Troubleshooting the Cooling Subsystem” section on
page 5-5 to ensure that both the fans and the power supply
are functioning properly.

Power supply and fans appear
operational, but none of the I/O LEDs
are on.

The improperly
connected port
adapter has
indefinitely paused
the system.

Reseat the port adapter, tighten the screw of the port
adapter latch, and then restart the system.

The prior configuration—native Gigabit
Ethernet or the Fast
Ethernet/Ethernet—LEDs remain on
after configuring the ports to change the
configuration from one Ethernet type to
the other.

The media-type
command was not
used when changing
the configuration of
these ports.

See Chapter 3, “Starting and Configuring,” the
“Configuring the Native Gigabit Ethernet and Fast
Ethernet/Ethernet Interfaces” section on page 3-15.

Troubleshooting the Processor Subsystem
The processor subsystem comprises the system board and the port adapter. A port adapter that is partially
connected to the system board sends incomplete signals to the processor, which faults the PCI bus and
causes the system to pause indefinitely. Therefore, first ensure that the system software has initialized
successfully and then check to see if the port adapter is fully connected.

Troubleshooting the Port Adapter or Service Adapter
Check the following to help isolate a problem with the port adapter or service adapter:
Table 5-4

Troubleshooting the Port Adapter or Service Adapter

Symptom

Possible Cause

Possible Solution

Port adapter or
service adapter
ENABLE LED is
off.

The port adapter or
service adapter might
have pulled away
from the system
board.

Reseat the adapter in its slot (you do not have to turn off the system power when
removing or replacing port adapter and service adapters). After the system
reinitializes the interfaces, the ENABLE LED on the port adapter or service
adapter should go on.
If the ENABLE LED remains off, the system detected a processor hardware
failure. (This LED should be on in normal operation.) Contact a service
representative for instructions.

Cisco 7401ASR Installation and Configuration Guide

5-6

OL-5419-01 B0

Chapter 5

Troubleshooting
Upgrading the Boot Helper (Boot Loader) Image

Upgrading the Boot Helper (Boot Loader) Image
The boot helper (boot loader) image resides in Flash memory and contains a subset of the Cisco IOS
software. This image is used to boot your router from the network or to load Cisco IOS images onto the
router. This image is also used if the system cannot find a valid system image.
Your boot helper (boot loader) image should correspond to the Cisco IOS release that is running on your
router.

Note

The Cisco 7401ASR router requires the c7400-kboot-mz boot helper image.
To upgrade your boot helper (boot loader) image, obtain the most current boot helper image through
Cisco.com and copy the new boot helper image to Flash memory on your router. For information on how
to access Cisco.com, see the “Cisco.com” section in the Preface. Follow the Software Center link under
Service and Support. You need to get a login code from a Cisco representative to retrieve files from the
Software Center.
To obtain a boot helper (boot loader) image from Cisco.com and upgrade your bootflash, do the
following:

Step 1

Download the boot helper (boot loader) image from Cisco.com to a Trivial File Transfer Protocol
(TFTP) server.

Step 2

Reformat the Flash memory on your router as follows:
router# format bootflash:
Format operation may take a while. Continue? [confirm]
Format operation will destroy all data in "bootflash:".
Formatting sector ...
Format of bootflash:complete

Note
Step 3

Continue? [confirm]

Reformatting Flash memory erases the current Flash memory contents.

Copy the boot helper image from the TFTP server to Flash memory as follows:
router# copy tftp bootflash:
Address or name of remote host []? biff
Source filename []? c7200-boot-mz.120-5.S
Destination filename [c7200-boot-mz.120-5.S]?
Accessing tftp://biff/c7200-boot-mz.120-5.S...
Loading c7200-boot-mz.120-5.S from 192.168.254.254 (via
Ethernet4/0):!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 3132516/6264832 bytes]
3132516 bytes copied in 28.488 secs (111875 bytes/sec)

This completes the procedure for upgrading your boot helper (boot loader) image. For more detailed
instructions on loading and maintaining system images and microcode, including boot helper images,
refer to the Cisco IOS Configuration Fundamentals Configuration Guide, which is available on
Cisco.com.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

5-7

Chapter 5

Troubleshooting

PXF Troubleshooting Information

PXF Troubleshooting Information
Note

The VPN Acceleration Module (VAM) is not compatible with the PXF processor.
Cisco IOS Statistics Not Supported by PXF

Some standard Cisco IOS statistics are not supported in the PXF path, including:
•

Subinterface counters

•

ATM VC counters

•

Class-match statistics on classes with neither policing nor class-based weighted fair queueing
(CBWFQ)

Features Not Supported by PXF

Features that are not supported by PXF are punted to the Route Processor (RP), which can cause high
RP CPU usage.
High PXF CPU Usage

Enter the show pxf accounting summary command to display information about PXF CPU usage:
Router# show pxf accounting summary
.
.
.
10 second averages: PXF complex busy: 1% PXF read pipeline full: 0%

The PXF has 16 processors, only one of which is in use at a time when there is a low traffic rate. Even
though only one of the processors is working, all of the PXF processors are slightly slowed. At higher
traffic rates, many of the PXF processors are working at the same time, but there is no additional slow
down.
High Route Processor CPU Usage

High RP CPU usage may result from punting of packets from the PXF processors to the RP. Enter the
show pxf accounting summary command to view the number and cause of punts.
Router# show pxf accounting summary
Pkts

Dropped
RP Processed
Total
0
PXF Statistic:
Packets RP -> PXF:
switch ip:
switch raw:
qos fastsend:
qos enqueue:
Total:

Ignored
48360

0

0
30048360
0
1938
30050298

Packets PXF -> RP:
qos pkts:
1938
fast pkts:
30000000
drops:total
0
punts:total
48360
"
not IP
:
"
CEF no adjacency :
Total:
30050298

40572
7788

Cisco 7401ASR Installation and Configuration Guide

5-8

OL-5419-01 B0

Chapter 5

Troubleshooting
PXF Troubleshooting Information

Packets ignored:
shadow ring full:
in ring full:
PXF inactive:
tx credits:
holdq enqueues:
interrupts:
interrupt packets:
pending read bytes:
Interface
Fa0/0
Et1/0
Et1/1
Et1/2
Et1/3
Se2/0
Se2/1
Se2/2
Se2/3
Fa3/0
PO4/0
AT5/0
Vi1
Vt1
Vi2
Vt2

Note

0
0
0
0

|
|
|

ring space:
shadow ring:
inring:

16230330
0
40538
53326
0

|
|
|

delayed credits:
requeue drops:
interrupt misses:

Pkts In
Chars In
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
30000000 1440000000
0
0
0
0
0
0
0
0
0
0

Pkts Out Chars Out
30000000 1740000000
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

16384
968

0
0
1947

Punted
970
21309
0
0
0
963
0
0
0
963
963
23192
0
0
0
0

Dropped
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

CPU usage becomes more efficient as packet load increases. For example, if you are running at 60% CPU
with only 33% of customer load on the system, this does not mean that you need 180% CPU for 100%
of customers. Part of the original 60% CPU usage is overhead usage, which does not increase as packet
load increases.
Ignored Packets

Packet ignores on an interface may result from high CPU usage. Enter the show interfaces command to
display any input ignores:
Router# show interfaces ethernet 0/0
Ethernet0/0 is up, line protocol is up
...
21 input errors, 0 CRC, 0 frame, 0 overrun, 21 ignored

Packets are ignored if there is no available CPU to accept the new packet. This can happen if the router
is overloaded with traffic, but can also happen if the interface is faulty. If ignores are present on all
interfaces, then the router is probably overloaded with traffic, or does not have sufficient free buffers in
the pool that match the maximum transmission unit (MTU) on interfaces. In the latter case, an increment
of the ignored counter is followed by an increment of the no buffer counter:
Router# show interfaces serial 0/0
...
1567 packets input, 0 bytes, 22 no buffer
22 input errors, 0 CRC, 0 frame, 0 overrun, 22 ignored, 0 abort

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

5-9

Chapter 5

Troubleshooting

PXF Troubleshooting Information

No Buffers

If there are too many buffers configured for the output hold queue on an interface, this can use memory
and result in dropped input packets. Enter the show running-config command and the show interfaces
command to display the status of the incoming packet interfaces.
Priority and Policing Configured in the Class Policy

PXF does not support a configured priority and policing in the same class of a policy.
PXF Punts

If a feature that is supported in the PXF path appears not to be working, it could be the result of PXF
failing to punt packets when it should. If you have only particular interfaces running the feature, you can
configure a feature that PXF does not support on that interface to force PXF to punt packets.
QoS Fast-send and QoS Enqueue

PXF is responsible for managing the outbound traffic queues on an interface on which output QoS
queueing is configured. All traffic destined for this interface must be processed by PXF, including both
keepalive packets that originate in the router, known as QoS Fast-send packets, and packets that are
switched in IOS, known as QoS Enqueue packets. If there is excessive traffic on the QoS Enqueue or on
the QoS Fast-send path, QoS functionality can be disrupted. Use the show pxf accounting summary
command to display the QoS Fast-send and QoS Enqueue packets:
Router# show pxf accounting summary
.
.
.
qos fastsend:
8
qos enqueue:
5

WFQ Queues

When there is an increase in ignored packets and in the no buffer count, it is possible that the output
weighted fair queueing (WFQ) queues are too long. To specify the number of dynamic queues to be
reserved for use by the class-default class as part of the default class policy, use the fair-queue
policy-map class configuration command; for example:
Router# fair-queue
policy-map policy9
class class-default
fair-queue 16
queue-limit 20

Cisco 7401ASR Installation and Configuration Guide

5-10

OL-5419-01 B0

A P P E N D I X

A

Specifications
This appendix provides system and component specifications for the Cisco 7401ASR router.
The following topics are found in this appendix:
•

System Specifications, page A-1

•

Software Requirements, page A-2

•

Processor Specifications, page A-3

•

Memory Specifications and Configurations, page A-3

•

Gigabit Ethernet GBIC Configurations and Port and Cabling Specifications, page A-4

•

Fast Ethernet/Ethernet RJ-45 Port Pinouts, page A-6

•

Console and Auxiliary Port Signals and Pinouts, page A-8

•

Alarm Port, page A-9

•

Lithium Battery Caution, page A-9

System Specifications
Table A-1

Cisco 7401ASR System Specifications

Description

Specification

System

Two primary PCI buses with an aggregate bandwidth of 600 Mbps 1

Dimensions (H x W x D)

1.72 in. x 17.3 in. x 11.80 in. (4.37 cm x 43.9 cm x 30 cm)

Weight

Chassis fully configured with a port adapter ~ 10.5 lb (4.76 kg)

Heat dissipation

50W (170 BTU2) typical, 75W (255 BTU) maximum

Power dissipation

75W maximum configuration

AC Power Supply Information

AC-input power

75W maximum (single supply configuration)

AC-input voltage rating

100–240 VAC3 wide input with power factor correction

AC-input current rating

Rated for 2A
Not to exceed 1.0A4 maximum at 100 VAC and .05A maximum at
240 VAC

AC-input frequency rating 50–60 Hz5

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

A-1

Appendix A

Specifications

Software Requirements

Table A-1

Cisco 7401ASR System Specifications (continued)

Description

Specification

AC-input cable

18 AWG6 three-wire cable, with a three-lead IEC-320 receptacle on the
power supply end, and a country-dependent plug on the power source end

DC Power Supply Information

DC-input power

75W maximum configuration

24V DC-input voltage
ratings

+24 VDC nominal. Maximum range +20 to +36 VDC

24V DC-input current
ratings

Rated for 5A. 3.0A at +24 VDC, 3.75A at +20 VDC (50VA/28 VDC =
1.8A typical draw)

24V DC-input cable

18 AWG recommended minimum, with at least 2 conductors rated for at
least 140 oF (60oC)

48V Single and Dual DC Power Supply Information

48V DC-input voltage
rating

–48 VDC 7 nominal in North America, –60 VDC nominal in some areas of
the European Community. Maximum range is –40.5 to 72 VDC (75 VDC
for 5 mA).

48V DC-input current
rating

Rated for 3A. Not to exceed 1.6A max. at –48 VDC. Not to exceed 2.0A
max. at –40.5 VDC (50VA/–54 VDC = 1.0A typical draw)

48V DC-input cable

18 AWG stranded recommended minimum, rated for at least 140 oF (60oC)

Temperature

32 to 104oF (0 to 40 oC) operating; –4 to 149 oF (–20 to 65oC) nonoperating

Humidity

10% to 90% noncondensing

1. Mbps = megabits per second
2. BTU = British thermal units
3. VAC = volts alternating current
4. A = amperes
5. Hz = hertz
6. AWG = American Wire Gauge
7. VDC = volts direct current

Software Requirements
The minimum software requirements for the Cisco 7401ASR router are:

Note

•

Cisco IOS Release 12.2 DX

•

Cisco IOS Release 12.2(1)DD

•

Cisco IOS Release 12.2(4)B

•

Cisco IOS Release 12.2(9)YE

•

To check the minimum software requirments of Cisco IOS software with the hardware installed on
your router, Cisco maintains the Software Advisor tool on Cisco.com. This tool does not verify
whether modules within a system are compatible, but it does provide the minimum IOS requirements
for individual hardware modules or components.

Access to this tool is limited to users with Cisco.com login accounts.

Cisco 7401ASR Installation and Configuration Guide

A-2

OL-5419-01 B0

Appendix A

Specifications
Processor Specifications

Processor Specifications
Table A-2

Processor Specifications

Memory Type

Size

Quantity

Description

SDRAM

128 MB,
256 MB,
512 MB

1

128-MB, 256-MB, or 512-MB DIMM

Boot ROM

512 KB

1

OTP1 ROM for the ROM monitor program

Primary cache

16 KB
(instruction),
16 KB (data)

—

RM7000 processor, internal cache

Secondary cache

256 KB

—

RM7000 processor; internal, unified cache

Tertiary cache

2 MB (fixed)

—

RM7000 processor, external cache2

1. OTP = one time programmable
2. Located on the processor engine board

Memory Specifications and Configurations
Table A-3

Memory Specifications

Type

Quantity

Size

Memory Description

Flash memory

1

8 MB

Contains the default boot helper (boot
loader) image

CompactFlash Disk

1

64 MB or
128 MB

Contains the default Cisco IOS image

NVRAM

1

512 KB

Nonvolatile EPROM for the system
configuration file

Table A-4

Memory Configurations

Total SDRAM

Quantity

Product Number

128 MB

1 128-MB DIMM

MEM-7400ASR-128MB=

256 MB

1 256-MB DIMM

MEM-7400ASR-256MB=

512 MB

1 512- MB DIMM

MEM-7400ASR-512MB=

Table A-5

CompactFlash Disk Configuration

Memory Size

Product Number

64 MB

MEM-COMP-FLD64M=

128 MB

MEM-COMP-FLD128M=

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

A-3

Appendix A

Specifications

Gigabit Ethernet GBIC Configurations and Port and Cabling Specifications

Gigabit Ethernet GBIC Configurations and Port and Cabling
Specifications
The Gigabit Interface Converter (GBIC) port is a 1000-Mbps optical interface in the form of an SC-type
duplex port that supports IEEE 802.3z interfaces compliant with the 1000BASEX standard.

Note

The GBIC is a separately orderable part and does not ship installed in your Cisco 7401ASR router. You
must install the GBIC before you connect the cables to it.

Note

Optical fiber cables are commercially available; they are not available from Cisco Systems.
Table A-6

GBIC Transmit Power, Receive Power, and Power Budget

Transmit Power
Minimum
Maximum

Receive Power
Minimum
Maximum

Power Budget

GBIC-SX= or
WS-G5484=

–9.5 dBm1

–4 dBm1

–17 dBm

0 dBm

7.5 dBm 2

GBIC-LX/LH=
or WS-G5486=

–9.5 dBm3

–3 dBm5

–20 dBm

–3 dBm

7.5 dBm 6 and 8.0 dBm 7

5.2 dBm

–24 dBm

–3 dBm

–24 dBm

GBIC

GBIC-ZX= or
WS-G5487=

–11.5 dBm4
0 dBm

1. For fiber types 50/125 µm, NA = 0.20 fiber and 62.5/125 µm, NA = 0.275 fiber.
2. For fiber types 50 µm MMF and 62.5 µm MMF.
3. For fiber types 9/125 µm SMF.

4. For fiber types 62.5/125 µm MMF and 50/125 µm MMF.

5. For fiber types 9/125 µm SMF, 62.5/125 µm MMF, and 50/125 µm MMF.
6. For fiber types 50 µm MMF and 62.5 µm MMF.
7. For fiber type 10 µm SMF.

GBIC Cabling and Connection Equipment
Table A-7 provides cabling specifications for the GBICs that you install in Gigabit Ethernet ports. Note
that all GBIC ports have SC-type connectors. Also, the minimum cable distance for the WS-G5484=
or GBIC-SX and GBIC-LX/LH or WS-G5486 (multimode fiber [MMF] and single-mode fiber [SMF]) is
6.5 feet (2 m), and the minimum link distance for the GBIC-ZX or WS-G5487 is 6.2 miles (10 km) with
an 8-dB attenuator installed at each end of the link. Without attenuators, the minimum link distance for
the GBIC-ZX or WS-G5487 is 24.9 miles (40 km).

Cisco 7401ASR Installation and Configuration Guide

A-4

OL-5419-01 B0

Appendix A

Specifications
Gigabit Ethernet GBIC Configurations and Port and Cabling Specifications

Table A-7

GBIC Port Cabling Specifications

GBIC
GBIC-SX or
WS-G5484

GBIC-LX/LH or
WS-G5486

3,4

GBIC-ZX or
WS-G5487
Extended distance
(1000BASEZX)5

Wavelength
(nm)

Fiber Type

Core Size
(micron)

Modal Bandwidth
(MHz/km)

Maximum
Cable Distance

850

MMF1

62.5

160

722 ft (220 m)

62.5

200

902 ft (275 m)

50.0

400

1640 ft (500 m)

50.0

500

1804 ft (550 m)

62.5

500

1804 ft (550 m)

50.0

400

1804 ft (550 m)

50.0

500

1804 ft (550 m)

9/10

—

6.2 miles (10 km)

9/10

—

43.5 miles (70 km)

8

—

62.1 miles (100 km)

1300

1550

MMF2 and
SMF

SMF
SMF

6

1. Multimode fiber (MMF) only.
2. A mode-conditioning patch cord is required.
When using the GBIC-LX/LH or WS-G5486 with 62.5-micron diameter MMF, you must install a mode-conditioning patch
cord between the GBIC and the MMF cable on both the transmit and the receive ends of the link when link distances are
greater than 984 ft (300 m).
We do not recommend using the GBIC-LX/LH or WS-G5486 and MMF with no patch cord for very short link distances (tens
of meters). The result could be an elevated bit error rate (BER).
3. You can have a maximum of 12 1000BASEZX GBICs per system to comply with EN55022 Class B regulations and 24
1000BASEZX GBICs per system to comply with FCC Class A regulations.
4. The minimum link distance for the GBIC-ZX or WS-G5487 is 6.2 miles (10 km) with an 8-dB attenuator installed at each
end of the link. Without attenuators, the minimum link distance for the GBIC-ZX or WS-G5487 is 24.9 miles (40 km).
5. Contains a Class 1 laser of 1550 nm for 1000BASEZX (extended wavelength) applications.
6. Dispersion-shifted single-mode optical fiber cable.

A mode-conditioning patch cord can be used with the GBIC-LX/LH or WS-G5486 to allow reliable laser
transmission between the single-mode laser source on the GBIC and a multimode optical fiber cable.

GBIC-SX or WS-G5484
The GBIC-SX or WS-G5484 operates on standard multimode fiber-optic link spans of up to 1804 feet
(550 m).

GBIC-LX/LH or WS-G5486
The GBIC-LX/LH or WS-G5486 1000BASELX/LH (long wavelength/long haul) GBIC interfaces fully
comply with the IEEE 802.3z 1000BASELX standard. However, their higher optical quality allows them
to reach 10 km over single-mode fiber (SMF) versus the 3.1 miles (5 km) specified in the standard.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

A-5

Appendix A

Specifications

Fast Ethernet/Ethernet RJ-45 Port Pinouts

GBIC-ZX or WS-G5487
The 1000BASEZX (extended wavelength) GBIC operates on ordinary single-mode fiber-optic link spans
of up to 43.5 miles (70 km). Link spans of up to 62.1 miles (100 km) are possible using premium
single-mode fiber or dispersion-shifted single-mode fiber (premium single-mode fiber has a lower
attenuation per unit length than ordinary single-mode fiber; dispersion-shifted single-mode fiber has
both lower attenuation and less dispersion).
The 1000BASEZX GBIC must be coupled to single-mode fiber-optic cable, which is the type of cable
typically used in long-haul telecommunications applications. The 1000BASE-ZX GBIC will not operate
correctly when coupled to multimode fiber, and it is not intended to be used in environments where
multimode fiber is frequently used (for example, building backbones, horizontal cabling).
The 1000BASEZX GBIC is intended to be used as a Physical Medium Dependent (PMD) component for
Gigabit Ethernet interfaces found on various switch and router products. It operates at a signaling rate
of 1250 Mbaud, transmitting and receiving 8B/10B encoded data.
When shorter lengths of single-mode fiber are used, it may be necessary to insert an in-line optical
attenuator in the link to avoid overloading the receiver.

Note

•

Insert a 10-dB in-line optical attenuator between the fiber-optic cable plant and the receiving port
on the 1000BASEZX GBIC at each end of the link whenever the fiber-optic cable span is less than
15.5 miles (25 km).

•

Insert a 5-dB in-line optical attenuator between the fiber-optic cable plant and the receiving port on
the 1000BASEZX GBIC at each end of the link whenever the fiber-optic cable span is equal to or
greater than 15.5 miles (25 km) but less than 31 miles (50 km).

Fiber-optic cables are commercially available; they are not available from Cisco Systems.

Fast Ethernet/Ethernet RJ-45 Port Pinouts
The Cisco 7401ASR router has RJ-45 ports for the two Fast Ethernet/Ethernet connections. The RJ-45
ports support IEEE 802.3 (Ethernet) and IEEE 802.3u (Fast Ethernet) interfaces compliant with
10BASET and 100BASETX specifications.
The RJ-45 ports support standard straight-through and crossover Category 5 UTP cables with RJ-45
connectors. Cisco Systems does not supply Category 5 UTP cables; these cables are available
commercially.

Warning

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

Figure A-1 shows an RJ-45 port and connector. Table A-8 lists the pinouts and signals for the RJ-45 port.

Cisco 7401ASR Installation and Configuration Guide

A-6

OL-5419-01 B0

Appendix A

Specifications
Fast Ethernet/Ethernet RJ-45 Port Pinouts

Figure A-1

RJ-45 Port and Connector

57574

12345678

1
1

RJ-45 connector

Table A-8

RJ-45 Receptacle Pinouts

Pin1

Description

1

TxD+2

2

TxD–

3

RxD+3

6

RxD–

1. Any pin not referneced is not connected.
2. TxD = Transmit Data
3. RxD = Receive Data

Note

With reference to the RJ-45 pinouts in Table A-8, proper common-mode line terminations should be
used for the unused Category 5 UTP cable pairs 4/5 and 7/8. Common-mode termination reduces
electromagnetic interference (EMI).
Use the pinouts shown in Figure A-2 for straight-through and crossover twisted-pair cable connections
for your RJ-45 interface cabling requirements.
Fast Ethernet/Ethernet Pinouts—Straight-Through or Crossover Cable

1

2

3

4

3

5

1 TxD+
2 TxD–

1 RxD+
2 RxD–

1 TxD+
2 TxD–

1 TxD+
2 TxD–

3 RxD+
6 RxD–

3 TxD+
6 TxD–

3 RxD+
6 RxD–

3 RxD+
6 RxD–

1

Straight-through cable pinout, Ethernet port to 4
a hub or repeater

Hub

2

Crossover cable pinout, Ethernet port to a
DTE

5

DTE

3

Ethernet port

57607

Figure A-2

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

A-7

Appendix A

Specifications

Console and Auxiliary Port Signals and Pinouts

To determine whether a UTP cable is a crossover cable or a straight-through cable, hold the two RJ-45
connectors next to each other so you can see the colored wires inside the ends.
Examine the sequence of colored wires to determine the type of cable, as follows:
•

Straight-through—The colored wires are in the same sequence at both ends of the cable.

•

Crossover—The first (far left) colored wire at one end of the cable is the third colored wire at the
other end of the cable.

Console and Auxiliary Port Signals and Pinouts
The Cisco 7401ASR router does not support Data Carrier Detect (DCD). Table A-9 lists the RJ-45
console port signals.
Table A-9

Console Port Signals

Pin

Signal

Direction

Description

1

CTS

Out

Clear To Send (tracks RTS)

2

DSR

Out

Data Set Ready (always on)

3

RXD

Out

Receive Data

4

GND

—

Signal Ground

—

—

Not connected

6

TXD

In

Transmit Data

7

DTR

In

Data Terminal Ready

8

RTS

In

Ready To Send

Table A-10 lists the RJ-45 auxiliary port signals.
Table A-10 Auxiliary Port Signals

Pin

Signal

Direction

Description

1

RTS

Out

Ready To Send

2

DTR

Out

Data Terminal Ready

3

TXD

Out

Transmit Data

In

Ring Indication

1

4

RING

5

GND

—

Signal Ground

RXD

In

Receive Data

DSR/DCD
(RLSD)

In

Data Set Ready / Data Carrier Detect
(Receive Line Signal Detect)

CTS

In

Clear To Send (tracks RTS)

6
7
8

2

1. RING is not supported on Cisco-supplied adapters. To use this pin, you must create a customized
cable.
2. Pin 7 can be used as a DCD input for connection to a modem. The RJ-45-to-DB-25F adapter maps
DCD to this pin when used with a straight-through cable.

Cisco 7401ASR Installation and Configuration Guide

A-8

OL-5419-01 B0

Appendix A

Specifications
Alarm Port

Alarm Port
The dry relay alarm port operates up to 50V AC/DC maximum and up to 80 mA maximum. Total power
dissipation should not exceed 300 milliwatts. The normally closed position will have from 15 to 30 ohms
resistance. The open position will be greater than 1 megohm. The Alarm condition is the closed position.
This port is a switch so that the cable connector can be inserted in either orientation.

Lithium Battery Caution
This caution is required although the Cisco 7401ASR router has no internal field replaceable units.

Caution

Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer. Dispose
of used batteries according to the manufacturers instructions.

ADVARSEL!

Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering. Udskiftning
må kun ske med batteri af samme fabrikat og type. Levér det brugte
batteri tilbage tilleverandøren.

VAROITUS

Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo
ainoastaan valmistajan suosittelemaan tyyppiin. Hävitä käytetty paristo
valmistajan ohjeiden mikaisesti.

ADVARSEL

Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype
eller en tilsvarende type anbefait av apparatfabrikanten. Brukte batterier
kasseres i henhold til fabrikantens instruksjoner.

VARNING

Eksplosionsfara vid felaktigt batteribyte. Använd samma batterityp eller
en ekvivalent typ som rekommenderas av apparattillverkaren. Kassera
använt batteri enligt fabrikantens instruktion.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

A-9

Appendix A

Specifications

Lithium Battery Caution

Cisco 7401ASR Installation and Configuration Guide

A-10

OL-5419-01 B0

A P P E N D I X

B

PXF Information
The PXF processor is turned on by default. If it is ever disabled, you must enable it to take advantage of
IP packet switching and feature acceleration.

Note

The VPN Acceleration Module (VAM) is not compatible with the PXF processor.

Note

Before enabling the PXF processor, you must have IP routing and IP CEF switching turned on.
To manually disable or enable the PXF processor, use the global commands:
hostname (config)# [no] ip pxf

The following features are supported by the PXF processor and are enabled using standard IOS
procedures:
•

CEF—Cisco Express Forwarding

•

NetFlow

•

NAT—Network Address Translation

•

WFQ—weighted fair queuing

•

WRED—weighted random early detection

•

ACL—access control list

•

CBWRED—class-based weighted random early detection

•

CBWFQ—class-based weighted fair queueing

•

CAR—committed access rate

See the “Related Documentation” section on page xvii to find documents about enabling these features.

Using show Commands
Use the global show version or show c7400 commands to obtain information about the hardware and
software installed on your router. Examples of each follow.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

B-1

Appendix B

PXF Information

Using show Commands

Using the show version Command
Use the show version command to display the configuration of the system hardware and the software
version.
The following example of the show version command provides information about a Cisco 7401ASR
router:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7400 Software (C7400-JS-M), Version 12.2
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Sat 19-May-01 11:31 by
Image text-base:0x60008960, data-base:0x617CA000
ROM:System Bootstrap, Version 12.2(1r)DD1, RELEASE SOFTWARE (fc1)
BOOTFLASH:7400 Software (C7400-KBOOT-M),
12.2(20010427:125)
router uptime is 17 hours, 2 minutes
System returned to ROM by reload at 01:09:49 UTC Sat Jan 1 2000
System image file is "tftp://000.000.000.000//tftpboot/biff/122_1_DX/c7400mz.V122_1_DX.5.19.01"
cisco 7401ASR (NSE) processor (revision A) with 245760K/16384K bytes of memory
Processor board ID 4294967295
R7000 CPU at 375Mhz, Implementation 39, Rev 3.3, 256KB L2, 2000KB L3 Cache
1 slot ASR midplane, Version 2.0
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
PXF processor tmc is running.
8 Ethernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
509K bytes of non-volatile configuration memory.
64256K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x100

Cisco 7401ASR Installation and Configuration Guide

B-2

OL-5419-01 B0

Appendix B

PXF Information
Using the show pxf Commands

Using the show c7400 Command
Use the show c7400 command to obtain information about the router.
Router# show c7400
Network IO Interrupt Throttling:
throttle count=0, timer count=0
active=0, configured=1
netint usec=4000, netint mask usec=200
Midplane EEPROM:
Hardware revision 2.0
Board revision UNKNOWN
Serial number 0000000000 Part number 00-0000-00
Test history
0xFF
RMA number 000-000-000
MAC Pool Size
64
MAC Addr Base 0000.000.0000
Chassis Model
0x1
EEPROM format version 1
EEPROM contents (hex):
0x00:01 01 02 00 FF FF FF FF 49 16 41 02 00 04 C1 28
0x10:54 40 00 40 FF FF FF FF FF FF FF FF FF FF FF FF
0x20:62 20 00 00 63 2F 55 7C 00 00 00 00 60 63 B2 D0
0x30:00 00 00 00 62 6D 0C 50 00 00 00 00 00 00 00 00
C7401ASR CPU EEPROM:
Hardware Revision
PCB Serial Number
Part Number
Board Revision
RMA Test History
RMA Number
RMA History
Deviation Number
Product Number
Top Assy. Part Number
EEPROM format version 4
EEPROM contents (hex):
0x00:04 FF 40 02 7E 41
0x10:36 48 4B 45 43 82
0x20:00 00 00 00 04 00
0x30:43 4F 37 34 30 31
0x40:20 C0 46 03 20 00
0x50:FF FF FF FF FF FF
0x60:FF FF FF FF FF FF
0x70:FF FF FF FF FF FF

:1.0
:CAB0516HKEC
:73-5697-02
:02
:00
:0-0-0-0
:00
:0-0
:CISCO7401
:800-09092-02

01
49
80
20
23
FF
FF
FF

00
16
00
20
84
FF
FF
FF

C1
41
00
20
02
FF
FF
FF

8B
02
00
20
FF
FF
FF
FF

43
42
00
20
FF
FF
FF
FF

41
30
CB
20
FF
FF
FF
FF

42
32
94
20
FF
FF
FF
FF

30
03
43
20
FF
FF
FF
FF

35
00
49
20
FF
FF
FF
FF

31
81
53
20
FF
FF
FF
FF

Using the show pxf Commands
Following are five specific show pxf commands and several subcommands. Included in this section are
examples for each command.
•

show pxf accounting ?

•

show pxf accounting summary

•

show pxf accounting interface

•

show pxf crash

•

show pxf info

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

B-3

Appendix B

PXF Information

Using the show pxf Commands

•

show pxf interface

•

show pxf feature ?

Sample output for these commands follows.

Using the show pxf accounting ? Command and Subcommands
The following is an example of the show pxf accounting ? command with sample output:
Router# show pxf accounting ?
ATM
Ethernet
FastEthernet
Hssi
Null
POS
Serial
summary

ATM interface
IEEE 802.3
FastEthernet IEEE 802.3
High Speed Serial Interface
Null interface
Packet over Sonet
Serial
PXF summary statistics

The following is an example of the show pxf accounting summary command with sample output:
Router# show pxf accounting summary
Pkts
Dropped
RP Processed
Total
0
90
>
>PXF complex busy
: 8%
>PXF input pipeline full: 0%
>
>PXF Statistic:
>Packets RP -> PXF:
>
switch ip:
>
switch raw:
>
qos fastsend:
>
qos enqueue:
>Total:
>
>Packets PXF -> RP:
>
qos pkts:
>
fast pkts:
>
drops:total
>
punts:total
>
"
not IP
>
"
CEF receive
>Total:
>
>Packets ignored:
>
shadow ring full:
>
in ring full:
>
PXF inactive:
>
>tx credits:
>holdq enqueues:
>interrupts:
>L2TP tunnel read:
>
Interface Pkts In
Chars In
Et0/0
0
0
Gi0/0
0
0
Fa1/0
0
0

Ignored
0

0
90
0
0
90

0
0
0
90
:
:

89
1
90
0
0
0
0

|
|
|

ring space:
shadow ring: 16382
inring:
995

0
0
90
0

|
|
|
|

delayed
requeue
pending
session

Pkts Out
0
0
0

Chars Out
0
0
0

credits:
drops:
read bytes:
stats:
Punted
93
0
0

0
0
0
0
Dropped
0
0
0

Cisco 7401ASR Installation and Configuration Guide

B-4

OL-5419-01 B0

Appendix B

PXF Information
Using the show pxf Commands

Fa4/0
Vt1
Lo0

0
0
0

0
0
0

0
0
0

0
0
0

0
0
0

0
0
0

The following is an example of the show pxf accounting interface command with sample output:
Router# show pxf accounting POS4/0
Interface
POS4/0

Pkts In
19

Chars In
1064

Pkts Out
0

Chars Out
0

Punted
44

Using the show pxf crash Command
The following is an example of the show pxf crash command with sample output:
Router#show pxf crash
EX_Type = 0x80000000
EX_ID(b0~3,16~17) = 0x00400
CPU_EX_ID(b0~15) = 0x0004
IHB_EX_Type(b0~5) = 0x00
XRAM0(b0~13) = 0x00000
XRAM1(b0~13) = 0x00000
XRAM2(b0~13) = 0x00000
XRAM3(b0~13) = 0x00000
Pipeline:7FDEFD pdone[3210]:1F
ICM0(b4~13) = 0x00000 ICM1(b4~13)
ICM2(b4~13) = 0x00010 ICM3(b4~13)
LOCK0(b0~4) = 0x00000 LOCK1(b0~4)
LOCK2(b0~4) = 0x00000 LOCK3(b0~4)
CPU0/2: SW EX Type=0x00000000 LBUS
Type=0x00000400

17

17

1D

= 0x00000
= 0x00000
= 0x00000
= 0x00000
EX Type=0x00000081 HW EX

CPU:row=0x0 column=0x2 cpu=0x2
PC:0000098E LR:0000087F CR:002C4C00
r0:00000000 r1:8001CEA0 r2:80784390 r3:00000000
r4:00005400 r5:80D3BA04 r6:80A7CA00 r7:00000004
r8:00000000 r9:00000008 r10:80092324 r11:800A6200
r12:00000033 r13:00000008 r14:00000000 r15:00000000
misr1a:00000000 misr1bhi:00000000 misr1blo:00000000 misr2hi:00000000
misr2lo:00000000 reserve:00000000 reserve:00000000 reserve:00000000
sisr1a:01000040
sisr1b:00000000
irhi:4402200F
irlo:00000000
cAll:C20DE822 DCD1:00020400 DCD2:00000002 CNTL:00000000
TBuf intr 0:1111111F
TBuf intr 1:020FFFF0
TBuf intr 2:00003C80
TBuf intr 3:80000000
TBuf intr 4:00000400
Xram return:00000000
Icram return hi:80024E00
Icram return lo:800A4E00
TBuf addr 0:005E6800 TBuf sblock1 0:8078A374 TBuf sblock0 0:804FD600
TBuf addr 1:005E6800 TBuf sblock1 1:8078A374 TBuf sblock0 1:804FD600
TBuf addr 2:005E6800 TBuf sblock1 2:8078A374 TBuf sblock0 2:804FD600
TBuf addr 3:005E6800 TBuf sblock1 3:8078A374 TBuf sblock0 3:804FD600
TBuf addr 4:005E6800 TBuf sblock1 4:8078A374 TBuf sblock0 4:804FD600
TBuf addr 5:005E6800 TBuf sblock1 5:8078A374 TBuf sblock0 5:804FD600
TBuf addr 6:005E6800 TBuf sblock1 6:8078A374 TBuf sblock0 6:804FD600
TBuf addr 7:005E6800 TBuf sblock1 7:8078A374 TBuf sblock0 7:804FD600

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

B-5

Appendix B

PXF Information

Using the show pxf Commands

Using the show pxf info Command
The following is an example of the show pxf info command with sample output:
Router# show pxf info
pxf:tmc type TMC ASIC Pass1 (no ECC) revision 3
ucode:filename 'system:pxf/ucode0' revision 1.1
state: is running, number of starts 1
uptime:15:24:18
Memory Configuration:
Bank Name
Total
Reserved
In-use
Free
tmc internal memory column 0
16 Kb
10 Kb
0 bytes 6144
bytes
tmc column 0 memory bank 0
32 Mb
26 Mb
16 Kb
5554 Kb
tmc internal memory column 1
16 Kb
512 bytes
0 bytes
15 Kb
tmc column 1 memory bank 0
32 Mb
669 Kb
2015 Kb
29 Mb
tmc internal memory column 2
16 Kb
6656 bytes
0 bytes 9728
bytes
tmc column 2 memory bank 0
32 Mb
441 Kb
800 Kb
30 Mb
tmc internal memory column 3
16 Kb
15 Kb
0 bytes 512
bytes
tmc column 3 memory bank 0
32 Mb
2092 Kb
128 Kb
29 Mb

Using the show pxf interface Command
The show pxf interface command provides a summary of the interfaces in the router and which PXF
features or capabilities are enabled on these interfaces. The following is an example of the
show pxf interface command:
Router# show pxf interface
Intf I/f # Attributes
Fa0/0
3
Raw, Encap, QoS(Cr
Et1/0
4
Raw, Encap
Et1/1
5
Raw, Encap, QoS(Cr
Et1/2
6
Raw, Encap
Et1/3
7
Raw, Encap
Se2/0
8
Raw, Encap, QoS(Cr
Se2/1
9
Raw, Encap, QoS(Cr
Se2/2
10
Raw, Encap, QoS(Cr
Se2/3
11
Raw, Encap, QoS(Cr
Fa3/0
12
Raw, Encap
PO4/0
13
Raw, Encap
AT5/0
14
Raw, Encap

0, Thrsh 2, Max 101)
0, Thrsh 2, Max 13)

0,
0,
0,
0,

Thrsh
Thrsh
Thrsh
Thrsh

2,
2,
2,
2,

Max
Max
Max
Max

5)
5)
5)
5)

Using the show pxf feature ? Command and Subcommands
The following is an example of the feature-specific show pxf feature ? command with sample output:
Router# show pxf feature ?
cef PXF CEF info
nat PXF NAT info

Cisco 7401ASR Installation and Configuration Guide

B-6

OL-5419-01 B0

Appendix B

PXF Information
Using the show pxf Commands

•

show pxf feature cef ?
Router# show pxf feature cef ?
entry
Shadow 16-4-4-8 PXF Mtrie:
41 leaves, 1968 leaf bytes, 15 nodes, 267000 node bytes
5 invalidations
46 prefix updates
refcounts: 66746 leaf, 66720 node
Prefix/Length
0.0.0.0/0
0.0.0.0/32
171.69.12.128/27
171.69.12.128/32
171.69.12.129/32
171.69.12.130/32
171.69.12.131/32
171.69.12.132/32
171.69.12.138/32
171.69.12.139/32
171.69.12.140/32
171.69.12.141/32
171.69.12.142/32
171.69.12.143/32
171.69.12.145/32
171.69.12.146/32
171.69.12.147/32

Refcount
62282
3
34
3
3
3
3
3
3
3
3
3
3
3
3
3
3

Parent
0.0.0.0/0
0.0.0.0/0
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27
171.69.12.128/27

(display text omitted)

•

show pxf feature nat ?
Router# show pxf
entry toaster
stat
toaster
tcp
toaster

feature nat ?
nat entry
nat processing info
nat tcp logging info

– Router# show pxf feature nat entry
Router# show pxf feature nat entry
--- 171.69.12.175
192.168.0.129
--- 171.69.12.161
192.168.0.7
--- 171.69.12.162
192.168.0.2
--- 171.69.12.163
192.168.0.3
--- 171.69.12.164
192.168.0.4
--- 171.69.12.165
192.168.0.13
--- 171.69.12.166
192.168.0.5

---------------

---------------

– Router# show pxf feature nat stat
Router# show pxf feature nat stat
NAT translation processing information
total nat entries = 0x1000, entries (used, free) = (0x7, 0xFF9)
untranslated flows:0x7022D
translated flows:0x1030
icmp extendable flows:0x0
noop alloc miss:0x0
entry alloc miss:0x0
entry delete miss:0x0

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

B-7

Appendix B

PXF Information

Using the show pxf Commands

Cisco 7401ASR Installation and Configuration Guide

B-8

OL-5419-01 B0

A P P E N D I X

C

Using the CompactFlash Disk
This appendix describes installation prerequisites you should observe before you can use the
CompactFlash Disk in your system, and includes the following sections:
•

Hardware and Software Requirements, page C-1

•

Tools and Parts Required, page C-1

•

“Product Description” section on page C-2

•

Compatibility Requirements, page C-3

•

Boot Environment Variables, page C-4

•

Sample Upgrade Process, page C-5

•

Product Description, page C-2

•

Working with a CompactFlash Disk, page C-5

Hardware and Software Requirements
The Cisco 7401ASR uses only CompactFlash Disks of the following configurations:
•

64 MB, Product ID: MEM-COMP-FLD64M=

•

128 MB, Product ID: MEM-COMP-FLD128M=

The minimum Cisco IOS releases for the Cisco 7401ASR CompactFlash Disks are the following:
Cisco IOS Release 12.2 DX, Cisco IOS Release 12.2(1)DD, Cisco IOS Release 12.2(4)B, and
Cisco IOS Release 12.2(9) YE.

Tools and Parts Required
You need some or all of the following tools and parts to install a CompactFlash Disk:
•

Antistatic wrist strap

•

Access to a Trivial File Transfer Protocol (TFTP) server

•

One of the following CompactFlash Disk kits:
– 64 MB, Product ID: MEM-COMP-FLD64M=
– 128 MB, Product ID: MEM-COMP-FLD128M=

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-1

Appendix C

Using the CompactFlash Disk

Product Description

Product Description
CompactFlash Disks are designed with Flash technology, a nonvolatile storage solution that does not
require a battery to retain data indefinitely. CompactFlash Disks provide complete PCMCIA-ATA
functionality and compatibility as defined by the CompactFlash Association in their CF+ and
CompactFlash Specification, revision 1.4.
The CompactFlash Disk is more flexible than linear Flash memory because the CompactFlash Disk has
controller circuitry that allows it to emulate a hard disk and automatically maps out bad blocks and
performs automatic block erasure. Further, the CompactFlash Disk provides the capability to allocate
noncontiguous sectors, which eliminates the need for the squeeze command (previously required with
linear Flash memory cards).
The CompactFlash Disk provides increased Flash-based memory space—64 MB to 128 MB—for
storage of system configuration files, Cisco IOS software images, and other types of system-related files.
Table C-1 provides memory information for the CompactFlash Disk.
Table C-1

Note

CompactFlash Disk Memory Options

Memory Size

Product Number

64 MB

MEM-COMP-FLD64M=

128 MB

MEM-COMP-FLD128M=

The CompactFlash Disk is only supported on systems with the Cisco IOS File System feature, and the
Cisco IOS File System feature is supported in Cisco IOS Release 12.0(1) or later releases of 12.0. In
general, CompactFlash Disk functionality requires Cisco IOS Release 12.0(2) or a later release of 12.0.
The Cisco IOS File System feature provides a single interface to all file systems your system uses:

Note

•

Flash memory file systems—CompactFlash Disks and onboard Flash memory

•

Network file systems—File Transfer Protocol (FTP), Remote Copy Protocol (rcp), and TFTP

•

Any other endpoint for reading or writing data—NVRAM, the running configuration, ROM, raw
system memory, system bundled microcode, Xmodem, Flash load helper log, modems, and BRI
MUX interfaces

A complete discussion of the Cisco IOS File System feature is beyond the scope of this publication. For
information about this feature, refer to the Cisco IOS Configuration Fundamentals Configuration Guide
and Cisco IOS Configuration Fundamentals Command Reference publications for Cisco IOS Release
12.x. These publications are available on Cisco.com. (For information on how to access Cisco.com, see
the “Cisco.com” section on page xvii.)

Cisco 7401ASR Installation and Configuration Guide

C-2

OL-5419-01 B0

Appendix C

Using the CompactFlash Disk
Compatibility Requirements

Compatibility Requirements
This section discusses CompactFlash Disk compatibility and use between supported systems.
In order to boot a Cisco IOS software image from the CompactFlash Disk, when the system is executing
from the ROM monitor software image, your ROM monitor software image and your boot image must
be from one of the minimum Cisco IOS releases listed in the “Hardware and Software Requirements”
section on page C-1. Use the show version or show hardware commands to verify that your system is
running these software images.
The format command places a processor-specific file system on the CompactFlash Disk so that the ROM
monitor software can read the CompactFlash disk media. If you plan to use the boot or dir commands
at the ROM monitor prompt (rommon>), you might need to reformat your CompactFlash Disk if it was
not already formatted on a like system processor.
For simple file storage and retrieval functions, CompactFlash Disks can be interchanged between any
Cisco 7401ASR router.

Note

The CompactFlash Disk in the Cisco 7401ASR router is supported on the c7400-kboot-mz image.

System Memory and Software Image Functions and Interactions
The read-only memory (ROM) monitor image on your system performs important functions, such as
running a brief set of system diagnostics, and initializing the hardware. This image gains control at reset
or power on, or after a nonrecoverable event (such as a bus error). The ROM monitor software image has
a rudimentary user interface that is recognizable by way of the ROM monitor prompt (rommon>). The
ROM monitor software image has console drivers and trap handlers for parity and bus errors; however,
the ROM monitor does not have any network interface code and it cannot boot an image over the
network.

Note

The ROM monitor is only able to load an image from boot flash memory or a CompactFlash Disk.
By default, and as a result of a reset or power on, the ROM monitor loads the boot image from boot flash
memory. If the ROM monitor cannot find a bootable image in boot flash memory, it searches the
CompactFlash Disk for the first bootable image. Normally, this would be the c7400-kboot-mz image.
The boot image, when loaded, looks in the boot environment variables—stored in nonvolatile
random-access memory (NVRAM)—to determine the location of the Cisco IOS software image and the
configuration to use. If boot environment variables are not defined, the system will boot the first image
found on the CompactFlash Disk.
The operation of the boot environment variables is described in the “Boot Environment Variables”
section, which follows.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-3

Appendix C

Using the CompactFlash Disk

Boot Environment Variables

Boot Environment Variables
The contents of the boot environment variables, which are stored in the configuration file in NVRAM,
determine the actions your system takes on bootup. To see the current settings of these variables, use the
show bootvar command as follows:
Router> show bootvar
BOOT variable =
CONFIG_FILE variable =
Current CONFIG_FILE variable =
BOOTLDR variable does not exist
Configuration register is 0x100

Following are explanations for each of these boot environment variables:
•

BOOT variable—Points to the Cisco IOS software image that you want to boot; you set it in
configuration mode. The default software image is the CISCOxxx image (where xxx is a filename
assigned by the system, if you do not enter a specific filename). The system then looks for the first
image on the CompactFlash Disk in slot 0.
Enter configuration mode and specify a filename and CompactFlash Disk slot from which to boot
using the configure terminal and boot system commands as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CTRL-Z.
System(config)# boot system flash disk0:rsp-p-mz.12-0

The result of this configuration file entry is that the BOOT variable is disk0: c7400-js-m...bin
CONFIG_FILE (configuration file) variable—Determines where the configuration is read from on
bootup; you set it in configuration mode as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CTRL-Z.
System(config)# boot config disk0:configfile

The result of this configuration file entry is that the CONFIG_FILE variable is disk0:configfile.
•

BOOTLDR (boot loader) variable—Determines which image is used as the boot helper (boot
image); you set it in configuration mode as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CTRL-Z.
System(config)# boot bootldr bootflash:c7401-boot-mz

The result of this configuration file entry is that the BOOTLDR variable is
bootflash:c7401-boot-mz.
•

Configuration register variable—Instructs the system where to look for a bootable Cisco IOS
software image; you set it as a hexadecimal value in configuration mode as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CTRL-Z.
System(config)# config-register 0x102

The result of this configuration file entry is that the configuration register is set to hexadecimal
0x102. Please seeChapter 3, “Starting and Configuring,” page 3-9, for more information about the
configuration register.

Cisco 7401ASR Installation and Configuration Guide

C-4

OL-5419-01 B0

Appendix C

Using the CompactFlash Disk
Sample Upgrade Process

Sample Upgrade Process
This section applies to users who want to use CompactFlash Disks for simple file storage.
Step 1

Format your onboard Flash memory—called boot flash memory. (See the format command description
in the “Software Command Overview” section on page C-6.)

Step 2

Upgrade your onboard Flash memory by copying the Cisco IOS Release 12.x boot image (the
c7400-kboot-mz) into onboard Flash memory. (See the “Software Command Overview” section on
page C-6.)

Step 3

Copy the Cisco IOS Release 12.x software image from onboard Flash memory to the CompactFlash
Disk.

Step 4

Change the boot variables in your configuration file to point to the new Cisco IOS image in your
CompactFlash Disk. (See the preceding section, “Boot Environment Variables,” and the “Making a
CompactFlash Disk-Based Software Image the Bootable Software Image” section on page C-13.)

Step 5

Reboot your system to load the Cisco IOS Release 12.x software image from the CompactFlash Disk.

Step 6

Insert a new CompactFlash Disk. (See “Installing and Removing the CompactFlash Disk” section on
page 1-7.)

Step 7

With your system running Cisco IOS release 12.x, format the blank CompactFlash Disk. (See the format
command description in Table C-2 on page C-6, and the “Using the format Command” section on
page C-9.)

You should now be able to store configuration files and Cisco IOS software images on your
CompactFlash Disk.

Working with a CompactFlash Disk
This section provides basic instructions for working with a CompactFlash Disk in your system. Detailed
descriptions of more complex CompactFlash Disk options and the Cisco IOS File System feature are
beyond the scope of this publication and can be found in the following Cisco IOS Release 12.x
publications:

Note

•

Cisco IOS Configuration Fundamentals Configuration Guide, in the chapter “File Management”

•

Cisco IOS Configuration Fundamentals Command Reference, in the chapter “File Management
Commands”

These and all publications are available online on Cisco.com. For information on how to access
Cisco.com, see the “Cisco.com” section on page xvii.
This section includes the following subsections:
•

Software Command Overview, page C-6

•

Using Software Commands, page C-7

•

Enabling Booting from a CompactFlash Disk, page C-12

•

Making a CompactFlash Disk-Based Software Image the Bootable Software Image, page C-13

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-5

Appendix C

Using the CompactFlash Disk

Working with a CompactFlash Disk

Software Command Overview
This section lists some of the basic software commands you can use with the CompactFlash Disk.
Examples of these commands are included in the sections that follow.
The CompactFlash Disk and other memory devices and locations in your system are defined as file
systems, which are locations where you can store, use, or retrieve files and software images. (See the
brief discussion about the Cisco IOS File System feature in the “Product Description” section on
page C-2.)
A CompactFlash Disk in the Cisco 7301 is referred to as slot0.
The following partial output of the show file systems command shows a sample system with a
CompactFlash Disk—called slot0:—installed in slot 0:
System# show file systems
File Systems:
Size(b)

Free(b)

Type

Flags

Prefixes

(Additional displayed text omitted from this example.)
48755200

48747008

flash

rw

slot0:

Table C-2 lists the software commands that you can use with the CompactFlash Disk.

Note

You can use other arguments with some of the commands listed in Table C-2; however, in Table C-2 and
throughout this document, command arguments are limited to those that apply to the CompactFlash Disk
and related file systems.
For a discussion of additional command arguments, refer to the Cisco IOS Configuration Fundamentals
Command Reference document, in the chapter “File Management Commands.”

Table C-2

CompactFlash Disk-Related Software Commands for the Cisco 7401ASR

Command and Arguments

Purpose

cd [disk0: | directory-name]

Changes current directory.
Allows you to move between directories on a CompactFlash Disk,
where directory-name is the directory to which you want to move.

copy [disk0: | ]source-filename
[tfpt:]destination-filename

Copies from one file to another.
Allows you to make a copy of a file (source-filename) located on a
source file system (disk0:) and place it with either the same
filename or a different filename (destination-filename) on a
destination file system. Along with disk0:, the source and
destination file system arguments include, but are not limited to:
•

bootflash: (onboard Flash memory)

•

nvram: (onboard nonvolatile random-access memory)

•

running-config (the running system configuration file)

•

startup-config (the startup system configuration file)

•

tftp: (a TFTP server to which you have access)

Cisco 7401ASR Installation and Configuration Guide

C-6

OL-5419-01 B0

Appendix C

Using the CompactFlash Disk
Working with a CompactFlash Disk

Table C-2

CompactFlash Disk-Related Software Commands for the Cisco 7401ASR (continued)

Command and Arguments

Purpose

delete [disk0:]filename

Deletes a file.
Allows you to delete any file you designate, where filename
designates the name of the file.

dir [/all | disk0: ]

Lists files on a file system.
Allows you to list the contents of the CompactFlash Disk in slot 0.
The /all argument lists all files on all file systems in your system.

format [flash: | bootflash: | disk0: ]

Formats a file system.
Allows you to format a linear Flash memory card (flash:), onboard
Flash memory (bootflash:), or a new CompactFlash Disk (disk0:).
This command also allows you to reformat a linear Flash memory
card or CompactFlash Disk that was formatted on another type of
system.
Note

This command destroys all data currently in Flash memory;
therefore, we strongly recommend that you use the format
command with caution to prevent irretrievable loss of data.

mkdir [disk0:]directory-name

Creates a new directory.
Allows you to create directories on a CompactFlash Disk, where
directory-name is the name you assign to this directory.

pwd

Displays current working directory.
Allows you to display the name of the CompactFlash Disk directory
in which you are currently working.

rename [disk0:]filename [disk0:]filename

Renames a file.
Allows you to rename a file that is located on one CompactFlash
Disk and assign to that file another (or the same) file system path
and filename. The first group of arguments defines the source
(current) file system path and filename, and the second set of
arguments defines the destination file system path and filename.

rmdir [disk0:]directory-name

Removes an existing directory.
Allows you to remove a directory that currently exists on a
CompactFlash Disk, where directory-name is the name of the
directory you want to remove.

show [disk0:]

Lists information about CompactFlash Disk format and geometry.

Using Software Commands
This section provides examples of some of the basic software commands you can use with the
CompactFlash Disk. See Table C-2 for optional arguments you can use with some of the following
commands:
•

Using the cd Command, page C-8

•

Using the show Command, page C-8

•

Using the pwd Command, page C-9

•

Using the dir Command, page C-9

•

Using the format Command, page C-9

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-7

Appendix C

Using the CompactFlash Disk

Working with a CompactFlash Disk

•

Using the mkdir Command, page C-10

•

Using the rmdir Command, page C-11

•

Using the delete Command, page C-11

Using the cd Command
Use the cd command by defining a specific path name. Then to verify your working directory, use the
pwd command:
System# cd disk0:
System# pwd
disk0:/

You can also move up (or back) one level in the Flash Disk directory hierarchy using the cd .. command,
and then verify your working directory with the pwd command:
System# pwd
disk0:daily_dir/
System# cd ..
System# pwd
disk0:/
System#

Using the show Command
To display information about CompactFlash Disk format and geometry, use the show [disk0: | disk2:]
command:
System# show disk0:filesys
******** ATA Flash Card Geometry/Format Info ********
ATA CARD GEOMETRY
Number of Heads:
Number of Cylinders
Sectors per Cylinder
Sector Size
Total Sectors

16
840
32
512
430080

ATA CARD FORMAT
Number of FAT Sectors
Sectors Per Cluster
Number of Clusters
Number of Data Sectors
Base Root Sector
Base FAT Sector
Base Data Sector

105
16
26822
429536
338
128
370

Router#

In this example:
•

Number of Heads is the number of heads on the CompactFlash Disk.

•

Number of Cylinders is the number of cylinders on the CompactFlash Disk.

•

Sectors per Cylinder is the number of sectors in each cylinder.

•

Sector Size is the number of bytes in each sector.

•

Total Sectors is the total number of sectors on the CompactFlash Disk.

Cisco 7401ASR Installation and Configuration Guide

C-8

OL-5419-01 B0

Appendix C

Using the CompactFlash Disk
Working with a CompactFlash Disk

•

Number of FAT Sectors is the number of sectors used to track allocation of clusters to files.

•

Sectors Per Cluster is the number of sectors contained in each cluster. (Files grow by a minimum of
one cluster.)

•

Number of Clusters is the total number of clusters available for use by files.

•

Number of Data Sectors is the number of sectors available for files.

•

Base Root Sector is the logical address of the first sector of the root directory.

•

Base FAT Sector is the first sector in the File Allocation Table (FAT).

•

Base Data Sector is the first sector available for use by files.

Using the pwd Command
You can verify your working directory by using the pwd command:
System# pwd
disk1:daily_dir/
System# cd ..
System# pwd
disk1:/
System#

Using the dir Command
To list the directory structure and contents of the CompactFlash Disk from which you are currently
working, use the dir command with no arguments:
System# dir
Directory of disk0:/
1 drw2 drw-

0
0

Jul 25 1998 10:23:11
Jul 25 1998 10:28:37

daily_dir
access_lists

64755200 bytes total (64742912 bytes free)
System#

Note that the size of the CompactFlash Disk is shown in the output of the dir command. (A 64-MB
CompactFlash Disk is shown in this example.) You can also view the contents of other directories and
file systems using specific optional arguments with the dir command. (See Table C-1.)

Using the format Command
To format a new CompactFlash Disk, use the format [disk0: ] command.

Note

Caution

You must format a new CompactFlash Disk before you can use it. If you plan to use a CompactFlash
Disk that was formatted and used on another type of system, see the “Compatibility Requirements”
section on page C-3 to determine if you need to reformat the CompactFlash Disk first.

The formatting procedure erases all information on the CompactFlash Disk. To prevent the loss of
important data that might be stored on a CompactFlash Disk, proceed carefully. If you want to save data
that is currently on your CompactFlash Disk, copy the data to a TFTP server or to another CompactFlash

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-9

Appendix C

Using the CompactFlash Disk

Working with a CompactFlash Disk

Disk on another router before you format the new CompactFlash Disk. A CompactFlash Disk that was
shipped as part of a configured system contains a CompactFlash Disk-compatible Cisco IOS software
image; therefore, you do not need to format it to use it in the system in which it was shipped.

Note

If you order a spare CompactFlash Disk, it is shipped blank; therefore, you must format it before you
can use it.
Use the following procedure to format a new CompactFlash Disk using the format command. (The
procedure assumes you have already booted your system.)

Step 1

Insert the CompactFlash Disk into slot 0 using the procedures in the “Installing and Removing the
CompactFlash Disk” section on page 1-7.

Step 2

Use the format disk0: command to format the CompactFlash Disk in slot 0 as follows:
Router# format disk0
Format operation may take a while. Continue? [confirm]
Format operation will destroy all data in "disk0". Continue? [confirm]
Format: Drive communication & 1st Sector Write OK
Writing Monlib
sectors...................................................................................
..........................................................................................
............................................
Monlib write complete
Format: All system sectors written. OK...
Format: Total sectors in formatted partition: 125152
format: Total bytes in formatted partition: 64077824
Format: Operation completed successfully.
Format of disk0: complete

Note

A 64-MB CompactFlash Disk was formatted in this example.
The new CompactFlash Disk is now formatted and ready to use in the system on which you formatted it.
(For specific formatting and compatibility requirements, see the “Compatibility Requirements” section
on page C-3.)

Using the mkdir Command
To create a directory on the CompactFlash Disk, use the mkdir command. The following example shows
how to create a directory called daily_dir on the CompactFlash Disk in slot 0, and then verify that it was
created:
System# mkdir disk0:daily_dir
Created dir disk0:daily_dir
System# dir
Directory of disk0:/
1

drw-

0

Jul 25 1998 10:15:43

daily_dir

Cisco 7401ASR Installation and Configuration Guide

C-10

OL-5419-01 B0

Appendix C

Using the CompactFlash Disk
Working with a CompactFlash Disk

48755200 bytes total (48751104 bytes free)
System#

Note

If you create a directory and place a file in it that you plan to access or use later on, be sure to define the
entire directory path to the file as you enter the appropriate software commands.
For example, if you placed the file itsa.file into the directory daily_dir on the CompactFlash Disk in
slot 0, you must designate the entire directory path as follows: disk0:daily_dir/itsa.file. Otherwise, the
system might not be able to locate this file.

Using the rmdir Command
To remove a directory from the CompactFlash Disk, use the rmdir command. The following example
shows how to remove the directory daily_dir from the CompactFlash Disk in slot 0, and then verify that
it was removed:
System# rmdir disk0:daily_dir
Delete disk0:daily_dir? [confirm] y
Removed dir disk0:daily_dir
System# dir
Directory of disk0:/
No files in directory.
48755200 bytes total (48751104 bytes free)
System#

Using the delete Command
To delete a file from a CompactFlash Disk, use the delete command. Use the dir command to find the
file you want to delete, and then use the delete command to delete it.
The following example shows how to find a file (called fun1) on the CompactFlash Disk, delete the file,
and then verify that it is deleted:
Step 1

Find the file you want to delete:
System# dir
Directory of disk0:/
1

drw-

0

May 10 1998 09:54:53 fun1

48755200 bytes total (48742912 bytes free)

Step 2

Delete the file fun1:
System# delete disk0:fun1

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-11

Appendix C

Using the CompactFlash Disk

Working with a CompactFlash Disk

Step 3

Verify that the file fun1 is deleted:
System# dir
Directory of disk0:/
No files in directory.
48755200 bytes total (48742912 bytes free)
System#

Enabling Booting from a CompactFlash Disk
This section explains how to enable booting from a CompactFlash Disk.
To enable booting from a CompactFlash Disk, set configuration register bits 3, 2, 1, and 0 to a value
between 2 and 15 in conjunction with the boot system [disk0: ]filename configuration command. This
section includes only descriptions of boot commands specific to the CompactFlash Disk. (You can use
either the slotn: argument or the diskn: argument for boot commands.)
Following are definitions of the various CompactFlash Disk-related boot commands:
•

boot system flash disk0: or boot system slot0:—Boots the first file in the CompactFlash Disk in
slot 0.

•

boot system flash disk0:herfile or boot system slot0:herfile—Boots the file named herfile from the
CompactFlash Disk in slot 0.

As you enter boot commands, pay attention to how you use the Spacebar, which influences the way your
system interprets the commands. Also, ensure that you define the entire path to a file as you enter the
boot commands; otherwise, the system might not be able to find the file.
For example, notice the difference in the following correct and incorrect commands:
System(config)# boot system flash disk0:myfile

Based on the preceding correct command, the system boots the file specified (myfile).
System(config)# boot system flash disk0: myfile

Based on the preceding incorrect command, the system finds the filename field blank because there is a
space after disk0:. In this case, the system ignores the filename argument and boots the first file on the
CompactFlash Disk, which might not be the file called myfile.
Use the following procedure to enable booting the file myfile from a CompactFlash Disk:
Step 1

Enter configuration mode and specify an image filename in the CompactFlash Disk slot from which to
boot by using the configure terminal command, as follows:
System# configure terminal
Enter configuration commands, one per line. End with CTRL-Z.
System(config)# boot system flash disk0:myfile

Step 2

Enable the boot system flash disk0:myfile command using the config-register command with the
hexadecimal value shown in the following example:
System(config)# config-reg 0x2102

This command, with the hexadecimal value 0x2102, results in the following:

Cisco 7401ASR Installation and Configuration Guide

C-12

OL-5419-01 B0

Appendix C

Using the CompactFlash Disk
Working with a CompactFlash Disk

Step 3

•

Enables the system to boot the default boot ROM software if the CompactFlash Disk-based image
fails to boot—hexadecimal value 0x2000

•

Disables Break—hexadecimal value 0x0100

•

Enables the image myfile as the default boot image—hexadecimal value 0x0002

Press Ctrl-Z to exit configuration mode:
System(config)#
Crtl-Z
System#

Step 4

Save the new configuration to NVRAM by using the copy system:running-config
nvram:startup-config command as follows:
System# copy system:running-config nvram:startup-config

Making a CompactFlash Disk-Based Software Image the Bootable
Software Image
This section explains how to make a CompactFlash Disk-based Cisco IOS software image a bootable
image.
After you copy a software image to the CompactFlash Disk, use the following series of commands to
make the image bootable (the file named new.image in this example). The software image in this example
is located on the CompactFlash Disk in slot 0. Note that the config-register command is also a part of
this command sequence because you must set the configuration register to 0x2102 to enable loading an
image from the CompactFlash Disk.
System# config terminal
System(config)# no boot system
System(config)# boot system flash disk0:new.image
System(config)# config-register 0x2102
Ctrl-Z
System# copy system:running-config nvram:startup-config
System# reload

When the system reloads, it boots the image new.image from the CompactFlash Disk in slot 0.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

C-13

Appendix C

Using the CompactFlash Disk

Working with a CompactFlash Disk

Cisco 7401ASR Installation and Configuration Guide

C-14

OL-5419-01 B0

A P P E N D I X

D

Configuration Register Information
The following information is found in this appendix:
•

Configuration Bit Meanings, page D-1

•

Displaying the Configuration Register While Running Cisco IOS, page D-5

•

Displaying the Configuration Register While Running ROM Monitor, page D-5

•

Setting the Configuration Register While Running Cisco IOS, page D-6

•

Setting the Configuration Register While Running ROM Monitor, page D-6

Configuration Bit Meanings
Use the processor configuration register information contained in this appendix to do the following:
•

Set and display the configuration register value

•

Force the system into the bootstrap program

•

Select a boot source and default boot filename

•

Enable or disable the Break function

•

Control broadcast addresses

•

Set the console terminal baud rate

•

Load operating software from ROM

•

Enable booting from a Trivial File Transfer Protocol (TFTP) server

Table D-1 lists the meaning of each of the configuration memory bits. Following the table is a more
in-depth description of each setting.
Table D-1

Configuration Register Bit Settings

Bit No.

Hex

Meaning

00–03

0x0000–0x000F

Boot field

06

0x0040

Causes the system software to ignore nonvolatile random-access
memory (NVRAM) contents

07

0x0080

OEM (original equipment manufacturer) bit enabled

08

0x0100

Break disabled

10

0x0400

IP broadcast with all zeros

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

D-1

Appendix D

Configuration Register Information

Configuration Bit Meanings

Table D-1

Configuration Register Bit Settings (continued)

Bit No.

Hex

Meaning

11–12

0x800–0x1000

Console line speed

13

0x2000

Boots default ROM software if initial boot fails

14

0x4000

IP broadcasts do not have network numbers

15

0x8000

Enables diagnostic messages and ignores NVRAM contents

Bits 0–3
The lowest four bits of the processor configuration register (bits 3, 2, 1, and 0) form the boot field.
Table D-2 provides information about the bits settings.
Table D-2

Bits 0–3 Settings

Boot Field

Meaning

0

Stays at the system bootstrap prompt (ROM monitor) on a reload or power cycle

1

Boots the boot helper image as a system image

2

Full boot process, which loads the Cisco IOS image into Flash memory

2-F

Specifies a default filename for booting over the network from a TFTP server

The boot field specifies a number in binary. If you set the boot field value to 0, you must have a console
port access to boot the operating system manually. Boot the operating system by entering the b command
at the bootstrap prompt as follows:
> b [tftp] flash filename

Definitions of the various command options follow:
b—Boots the default system software from ROM
b flash—Boots the first file in Flash memory
b filename [host]—Boots over the network using TFTP
b flash filename—Boots the file (filename) from Flash memory
If you set the boot field value to a value of 2 through F, and there is a valid system boot command stored
in the configuration file, the router boots the system software as directed by that value. (See Table D-3.)
If you set the boot field to any other bit pattern, the router uses the resulting number to form a default
boot filename for netbooting.
If there are no boot commands in the configuration file, the router attempts to boot the first file in system
Flash memory. If no file is found in system Flash memory, the router attempts to netboot a default file
with a name derived from the value of the boot field (for example, cisco2-7400). If the netboot attempt
fails, the boot helper image in boot flash memory will boot up.
If boot commands are in the configuration file, the router software processes each boot command in
sequence until the process is successful or the end of the list is reached. If the end of the list is reached
without a file being successfully booted, the router will retry the netboot commands up to six times if
bit 13 of the configuration register is set, otherwise it will load the operating system software available

Cisco 7401ASR Installation and Configuration Guide

D-2

OL-5419-01 B0

Appendix D

Configuration Register Information
Configuration Bit Meanings

in ROMmon. If bit 13 is not set, the router will continue to netboot images indefinitely. The default
setting for bit 13 is 0. If bit 13 is set, the system boots the boot helper image found in boot flash memory
without any retries.
The server creates a default filename as part of the automatic configuration processes. To form the boot
filename, the server starts with Cisco and links the octal equivalent of the boot field number, a dash, and
the image name. Table D-3 lists the default boot filenames or actions.

Note

A boot system configuration command in the router configuration in NVRAM overrides the default
netboot filename.
Table D-3

Default Boot Filenames

Action/File Name

Bit 3

Bit 2

Bit 1

Bit 0

Bootstrap mode

0

0

0

0

ROM software

0

0

0

1

Flash software

0

0

1

0

cisco3-< image-name1>

0

0

1

1

cisco4-

0

1

0

0

cisco5-

0

1

0

1

cisco6-

0

1

1

0

cisco7-

0

1

1

1

cisco10-

1

0

0

0

cisco11-

1

0

0

1

cisco12-

1

0

1

0

cisco13-

1

0

1

1

cisco14-

1

1

0

0

cisco15-

1

1

0

1

cisco16-

1

1

1

0

cisco17-

1

1

1

1

Bit 6
Bit 6 causes the system software to ignore nonvolatile random-access memory (NVRAM) contents.

Bit 7
Bit 7 enables the OEM bit. It disables the bootstrap messages at startup.

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

D-3

Appendix D

Configuration Register Information

Configuration Bit Meanings

Bit 8
Bit 8 controls the console Break key. Setting bit 8 (the factory default) causes the processor to ignore the
console Break key. Clearing bit 8 causes the processor to interpret Break as a command to force the
system into the bootstrap monitor, halting normal operation. A Break can be sent in the first sixty
seconds while the system reboots, regardless of the configuration settings.

Bit 10 and Bit 14
Bit 10 controls the host portion of the Internet IP broadcast address. Setting bit 10 causes the processor
to use all zeros; clearing bit 10 (the factory default) causes the processor to use all ones. B it 10 interacts
with bit 14, which controls the network and subnet portions of the IP broadcast address. Table D-4 shows
the combined effect of bit 10 and bit 14.
Table D-4

Bit 10 and Bit 14 Settings

Bit 14

Bit 10

IP Address ( )

Off

Off



Off

On



On

On



On

Off



Bit 11 and Bit 12
Bit 11 and Bit 12 in the configuration register determine the baud rate of the console terminal. Table D-5
shows the bit settings for the four available baud rates. (The factory set default baud rate is 9600.)
Table D-5

Bit 11 and Bit 12 Settings

Baud

Bit 12

Bit 11

9600

0

0

4800

0

1

2400

1

1

1200

1

0

Bit 13
Bit 13 determines the server response to a bootload failure. If boot commands are in the configuration
file, the router software processes each boot command in sequence until the process is successful or the
end of the list is reached. If the end of the list is reached without a file being successfully booted, the
router will retry the netboot commands up to six times if bit 13 of the configuration register is set,
otherwise it will load the operating system software available in ROMmon. If bit 13 is not set, the router
will continue to netboot images indefinitely. The default setting for bit 13 is 0. If bit 13 is set, the system
boots the boot helper image found in boot flash memory without any retries.

Cisco 7401ASR Installation and Configuration Guide

D-4

OL-5419-01 B0

Appendix D

Configuration Register Information
Displaying the Configuration Register While Running Cisco IOS

Bit 15
Bit 15 enables diagnostic messages and ignores NVRAM contents.

Displaying the Configuration Register While Running Cisco IOS
The configuration register can be viewed by using the show version or show hardware command.
The following is sample output of the show version command from a Cisco 7401ASR router.
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7400 Software (C7400-JS-M), Version 12.2(V99.1)
Copyright (c) 1986-2001 by cisco Systems, Inc.
Compiled Sat 19-May-01 11:31 by
Image text-base:0x60008960, data-base:0x617CA000
ROM:System Bootstrap, Version 12.2(1r)DD1, RELEASE SOFTWARE (fc1)
BOOTFLASH:7400 Software (C7400-KBOOT-M),
12.2(20010427:125)
router uptime is 17 hours, 2 minutes
System returned to ROM by reload at 01:09:49 UTC Sat Jan 1 2000
System image file is "tftp://000.000.000.000//tftpboot/biff/122_1_DX/c7400mz.V122_1_DX.5.19.01"
cisco 7401ASR (NSE) processor (revision A) with 245760K/16384K bytes of memory
Processor board ID 4294967295
R7000 CPU at 375Mhz, Implementation 39, Rev 3.3, 256KB L2, 2000KB L3 Cache
1 slot ASR midplane, Version 2.0
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
PXF processor tmc is running.
8 Ethernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
509K bytes of non-volatile configuration memory.
64256K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x100

Displaying the Configuration Register While Running ROM
Monitor
If the bootstrap prompt “>”, the o command displays the virtual configuration register currently in effect.
It includes a description of the bits. See the following sample output:
>o
Configuration register + 02x100 at last boot
Bit#
Configuration register option settings:
15
Diagnostic mode disabled

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

D-5

Appendix D

Configuration Register Information

Setting the Configuration Register While Running Cisco IOS

14
13
12-11
10
09
08
07
06
05
04
03-00

IP broadcasts do not have network numbers
Boot default ROM software if network boot fails
Console speed is 9600 baud
IP broadcasts with ones
Do not use secondary bootstrap
Break disabled
OEM disabled
Ignore configuration disabled
Fast boot disabled
Fan boot disabled
Boot to ROM monitor

If the prompt is “rommon1”, the confreg command displays the virtual configuration register currently
in effect. It includes a description of the bits. See the following sample output:
rommon 1 > confreg
Configuration Summary
enabled are:
load rom after netboot fails
console baud: 9600
boot: the ROM Monitor
Do you wish to change the configuration? y/n

[n]

Setting the Configuration Register While Running Cisco IOS
The configuration register can be set in the configuration mode with the config-register 0x
command. See the following sample output:
Router# config t
Enter configuration commands, one per line. End with CNTRL/Z.
Router(config)#config-register 0x2142
Router(config)#end
Router#
%SYS-5-CONFIG_I: Configured from console by console

Setting the Configuration Register While Running ROM Monitor
If the prompt is “>”, the or0x command sets the configuration register. See the following sample
output:
>o/r 0x2102
>

If the prompt is “rommon1”, the confreg command sets the configuration register. It prompts the user
about each bit. See the following sample output:
rommon 1 > confreg
Confiuration Summary
enabled are:
load rom after netboot fails
console baud: 9600
boot: the ROM Monitor
do you wish to change the configuration y/n
enable “diagnostic mode”? y/n
[n]:
n

[n]:

y

Cisco 7401ASR Installation and Configuration Guide

D-6

OL-5419-01 B0

Appendix D

Configuration Register Information
Setting the Configuration Register While Running ROM Monitor

enable
“use net in IP bcast address”? y/n [n]:
n
disable “use rom after netboot fails”? y/n [n]: n
enable
“use all zero broadcast”? y/n [n]: n
enable
“break/abort has effect”? y/n [n]: n
enable
“ignore system config info”? y/n
[n]: n
change console baud rate? y/n [n]: n
change the boot characteristics? y/n
[n]:y
enter to boot:
0 = ROM Monitor
1 = the boot helper image
2 - 15 = boot system
[0]: 2
Configuration Summary:
enabled are:
load rom after netboot fails
console baud: 9600
boot: image sepcified by the boot system commands or default to: cisco2-c7400
do you wish to change the configuration? y/n

[n]

n

You must reset or power cycle for new config to take effect
rommon 2 >

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

D-7

Appendix D

Configuration Register Information

Setting the Configuration Register While Running ROM Monitor

Cisco 7401ASR Installation and Configuration Guide

D-8

OL-5419-01 B0

I N D EX

boot system flash command

A
access-list (encryption) command

4-3

C

access lists
See also IPSec, crypto access lists
AC power supply specifications
acronyms
list of

A-1

cable-management kit

2-2

cables
connecting port adapter

xv

fiber-optic

addresses, MAC

3-2, 3-3

A-4

fiber-optic link distance

chassis clearance

3-5

I/O

3-5

through the chassis

A-5

swapping power

5-5

troubleshooting power subsystem

ambient site temperature

2-4

cache memory

xv

blank port adapter use

3-14

1-11

changed or replaced password required

ATM interfaces

changing passwords

3-16

AutoInstall
3-11

pinout and signals

A-8

chassis installation

2-9

chassis overheating

3-5

GBIC LX/LH distance

3-24

2-18

installing power supply filler plates
lithium battery

B

cd command

boot helper image

5-7

boot loader image

5-7

1-11

A-9

port adapter insertion
3-9

3-25

3-25

erasing router configuration

auxiliary port

banner, system

5-4

cautions

AppleTalk

configuring

A-7

specifications

A-9

See transform sets

configuring

A-4

RJ-45 pinout

allowed transform combinations

configuring

2-14

optical fiber

2-5

2-22

specifications

A-4

grounded, shielded cable Ethernet/Fast Ethernet
warning 2-16

3-5

monitoring
alarm port

2-13

A-6

fiber-optic length

airflow
exhaust

C-12

1-11

C-8

chassis
airflow

2-5

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

IN-1

Index

clearance

3-5

dimensions

2-2, A-1

ground connection procedure
ground lug connector
rack-mounting
weight

4-4

interface type slot/port

3-21

ip pxf

2-11

B-1

line con 0

1-4

3-24

media-type

2-6

3-15

negotiation auto

A-1

Cisco Documentation CD-ROM

no ip pxf

xvii

Cisco IOS

3-15

B-1

no negotiation auto

Cisco 7401ASR requirements
documentation

no shutdown

A-2

password

xvii

clearance

reload

chassis

3-5

clear crypto sa command

4-6

command interpreter, EXEC

3-24

3-25

reset

3-23

setup

3-11
B-1

show controller

access-list (encryption)

show diag

4-3

boot system flash filename

3-15

3-24

show c7400

4-2

commands

cd

initialization-vector size

3-16

3-25

show environment

C-12

3-5, 5-5

show environment all

C-8

clear counters GigabitEtherent (0 or 1)
clear crypto sa

3-16

3-5, 3-6

show environment last

3-5

show environment table

4-6

clear interface GigabitEthernet (0 or 1)

3-16

show hardware

3-6, 5-5

3-25

config-register

3-24, C-12

show interface GigabitEthernet X/O

config terminal

3-21

show interfaces

configure

show pxf

3-20

3-2

B-3

configure memory

3-24

show pxf accounting ?

configure terminal

3-24

show pxf accounting interfaces

confreg

copy running-config startup-config
crypto ipsec transform-set
crypto isakmp enable
delete

3-11, 3-21, 3-25

4-4

4-2

show pxf crash

directory listing

C-9

show pxf features
show pxf info

B-3

show startup-config

enable

3-20, 3-23

show version

encryption
format
group

3-24
4-2

C-9

speed

3-21
3-21, 3-22, 3-23

3-25, B-1

3-15

commands, mkdir

C-10

CompactFlash Disk
configurations
specification

4-2

B-4

show running-config

3-15

3-24

B-3

B-4

duplex

enable password

B-3

B-3

show pxf interface

C-11

enable secret

B-3

show pxf accounting summary

3-23

3-16

A-3
A-3

Cisco 7401ASR Installation and Configuration Guide

IN-2

OL-5419-01 B0

Index

config-register command

3-24, C-12

confreg command

config terminal command

3-21

console port

configuration bit meanings

pinout and signals

D-1

configuration file
saving

system banner display

3-21

description

3-20

A-3

SDRAM

A-3

A-3

configure command

environmental monitor

3-25

3-5

crossover cable, Ethernet pinout

3-20

configure memory command

3-24

configure terminal command

3-24

A-7

crypto access lists
creating

4-3

crypto sa command, clear

configuring

4-6

3-17, 3-18

ATM interfaces
AutoInstall

3-11

basic router

3-10

examples

3-16

D
DC power
shutdown

3-16, 3-19

Fast Ethernet (port adapter)
global paramenters

3-4

DC power supply

3-17

specifications

3-12

A-2

wiring the leads

global parameters
sample configuration

2-24

delete command

3-14

C-11

dimensions and weight of chassis

3-14

dimensions of chassis

4-2

dir command

interface parameters
sample configuration

reviewing changes
setup facility

3-21

A-1

C-9

environmental

3-16

native Gigabit Ethernet interfaces

3-15

duplex command

3-5
3-15

3-15

E

3-11

synchronous serial interfaces
using configuration mode

3-18

3-20

EEPROM
MAC address

3-3

electrical equipment guidelines

4-1
4-6

2-2

displays

3-19 to 3-20

native Fast Ethernet/Ethernet interfaces

verifying

1-12

critical status level

configuration settings, viewing

AppleTalk

3-11, 3-21,

3-25

cover removal

memory

VAM

5-5

copy running-config startup-config command

CompactFlash Disk

interfaces

5-2

troubleshooting

D-1

configurations

IKE

5-3

cooling subsystem

configuration register

IGRP

A-8

console terminal

configuration modes
basic

3-23

electrostatic discharge

2-3

2-4

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

IN-3

Index

electrostatic discharge damage

online insertion and removal
plug

See ESD prevention
enable command

enable secret command

Gigabit Interface Converter

3-24

configuring

5-5

error messages
environmental shutdown
ESD

1-4

procedure

2-11

H

2-4
2-4

hardware

EXEC command interpreter
exhaust air

connector

5-5

5-5

ESD prevention

3-14

ground connection

3-5

environmental monitoring error message

fan failure

A-4

3-12

sample configuration

3-4

show commands

3-15

global parameters

3-24

environmental monitoring and reporting
description

1-9

Gigabit Ethernet (native interface), configuring

3-20, 3-23

enable password command

1-8

4-2

addresses

3-5

3-2

hardware addresses
See also MAC addresses
heat dissipation

F
fan failure error message

5-5

I

fan failures
shutdown

3-8

identifying startup problems

Fast Ethernet (port adapter)
configuring

A-1

5-3

IGRP

3-17

configuring

Fast Ethernet/Ethernet (native interface),
configuring 3-15
Fast Ethernet/Ethernet pinouts
straight-through or crossover cable

3-14

IKE
configuring

4-2

image
A-7

fiber optic

boot helper or boot loader

5-7

initialization-vector size command

cable distance
link distance

A-4

input/output

A-4

cables

Flash memory specification
format disk command

4-4

A-3

C-9

2-14

connectors

2-14

installation
brackets on the chassis
chassis in a rack

G

2-7

2-6

chassis on a tabletop (general installation)
GBIC

checking shipping container

cable specifications
installation

A-5

connecting port adapter cables

2-5

1-5
2-13

1-9
Cisco 7401ASR Installation and Configuration Guide

IN-4

OL-5419-01 B0

Index

connecting power

2-23

grounding the chassis
interface parameters
site requirements

LEDs

3-16

enabled on interface processors

2-4

starting the router
tools for

L
2-11

identification and status

3-9

native I/O ports

2-2

workbench or tabletop

parameters

port adapter

3-16

5-3

M

Internet Packet Exchange

MAC addresses

See IPX

description

Internet Protocol

3-2, 3-3
3-3

make a directory command

See IP

media-type command

interpreter, EXEC command
IOS documentation
IOS requirements

configurations

xvii

3-15, 5-6

replacement

A-2

A-3
1-13

specifications

A-3

messages

3-14

ip pxf command

C-10

memory

4-2

IP
configuring

A-9

3-21

See IGRP

environmental

B-1

IPSec

3-5

modifications to configuration

access lists

4-3

configuring

4-3

crypto access lists

reviewing
4-3

3-21

N

4-6

transform sets

native Fast Ethernet/Ethernet interface, configuring

allowed combinations

4-4

native Gigabit Ethernet interface, configuring

4-4

LEDs
3-14

3-15

5-3

negotiation auto command
no ip pxf command

3-15

B-1

no negotiation auto command

K

3-15

nonvolatile random-access memory

kit
rack-mount and cable-management

3-15

native I/O ports

IPX
configuring

3-24

lithium battery caution

3-19 to 3-20

Interior Gateway Routing Protocol

defining

5-3

line con 0 command

3-16

interface type slot/port command

monitoring

5-3

native I/O ports

sample configuration

1-3, 5-2

using for troubleshooting

2-5

interface
configuration

3-9

See NVRAM
2-2

normal status level
Cisco 7401ASR Installation and Configuration Guide

OL-5419-01 B0

IN-5

Index

environmental monitor
no shutdown command

console and auxiliary

3-5

Fast Ethernet/Ethernet

3-24

numbering

GBIC specifications

logical interface

3-1

port adapter slot

3-1

connecting

A-5

2-23

subsystem for troubleshooting

5-2, 5-4

power cord

3-4

saving and viewing contents
size

A-6

power

NVRAM
log

A-8

troubleshooting

3-21

5-4, 5-5

power supply

A-3

and environmental monitor
disabled

O

3-4

shutdown

3-4

troubleshooting

OIR
functional description

5-3

procedures

3-3

checking shipping container contents

online insertion and removal

configuring the Cisco 7401ASR

See OIR
out-of-tolerance voltage condition

3-4

configuring VAM

at startup

connecting power

5-3

4-1

monitoring

2-13

2-23

grounding the chassis

3-4

2-11

installing brackets on the chassis

3-4

1-5

3-10

connecting port adapter cables

overheating
damage

3-5

2-7

installing chassis on a tabletop (general
installation) 2-5

P

rack-mounting chassis

replacing or recovering a lost password

password
command

starting the router

3-24

recovering lost

viewing system configuration
shutdown

connecting cables

5-2

pxf commands

2-13

logical interface numbering

3-1

3-1
5-3, 5-6

ports
alarm

A-3

subsystem for troubleshooting

port adapter

troubleshooting

3-25

3-4

specifications

1-9

slot numbering

2-5

processor

A-7

plug
GBIC

3-22

3-9

tabletop or workbench installation

3-22

pinouts
RJ-45

2-6

A-9

ip pxf

B-1

no ip pxf

B-1

show pxf accounting ?

B-3

show pxf accounting interface

B-3

show pxf accounting summary

B-3

show pxf crash

B-3

Cisco 7401ASR Installation and Configuration Guide

IN-6

OL-5419-01 B0

Index

show pxf features
show pxf info

contents

B-4

show commands

B-3

show pxf interface

1-5

show c7400

B-4

B-3

show controller

3-16

show crypto ipsec sa

R

4-6

show crypto ipsec transform-set
show crypto map

rack-mounting
front mounted

show diag

2-7

4-6

3-25

rear mounted

2-8

show environment

rack-mount kit

2-2

show environment all

reload command

replacing or recovering a lost password
reset command

3-22

3-6

3-25

show interfaces
show pxf

3-14

A-7

Routing Information Protocol

B-3

B-3

show pxf accounting summary

B-3

B-3

show pxf features
show pxf info

S

B-4

B-3

show pxf interface
show startup-config

sample configurations
global parameters mode
interface parameters
SDRAM configurations

show version

3-12

environmental

3-21

fan failure

A-3

setup command

3-25, B-2

processor

3-11

interface summary (example)

3-4

3-4

preventing administrative

3-18

thresholds

setup command facility

3-4
3-4

3-13

See SNMP
site ambient temperature

setup facility
3-11

shipping container

3-24

Simple Network Management Protocol

3-13

System Configuration Dialog (example)
configuration

3-21, 3-22, 3-23

3-8

power supply

serial interfaces
configuring

3-21

shutdown

3-16

saving the configuration file

B-4

show running-config

4-6

B-3

show pxf accounting interface
show pxf crash

See RIP

3-16

3-2

show pxf accounting ?

RJ-45

sa command, clear crypto

3-6, 5-5

show interface GigabitEthernet O/X

3-21

RIP

cable

3-5, 3-6

show environment table
show hardware

3-23

reviewing changes to configuration
configuring

3-5, 5-5

show environment last

3-25

4-6

2-4

site requirements
guidelines

2-4

slot/port numbers for interfaces

3-2

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

IN-7

Index

SNMP

thresholds

configuring

3-4

terms

3-13

software requirements

list of

A-2

specifications

xv

terms and acronyms

AC power supply
alarm port

tools

A-1

for installation

A-9

chassis dimensions

A-1

CompactFlash Disk

A-3

DC power supply
Flash memory

2-2

transform sets
allowed combinations
defining

A-2

4-4

cooling subsystem

A-1

5-2, 5-5

humidity

A-2

port adapter

NVRAM

A-3

power subsystem

processor

A-3

processor subsystem

temperature
weight

PXF

A-2

troubleshooting

5-3

overview

environmental

3-5

5-3

4-1

voltage

3-2

monitoring

3-4

5-2

straight-through cable, Fast Ethernet/Ethernet pinout
subsystems for troubleshooting
cooling
I/O

5-8

VAM

status

LED

5-2, 5-6

V

3-9

interfaces

5-2, 5-4

3-15

startup
system

5-6

startup problems

A-1

speed command

4-4

troubleshooting

A-3

heat dissipation

xv

5-2, 5-5

5-2, 5-4

processor

W
warnings

5-6

power

A-7

5-2

synchronous serial interfaces

AC power supply

2-23

chassis grounding

2-24

Class 1 laser product

1-8

Class 1 LED product

1-9

configuring

3-18

danger

system banner

3-9

ESD wrist strap

xv
1-12

grounded, shielded Ethernet/Fast Ethernet cables
Intra-building lightning protection

T

laser radiation
tabletop installation

2-5

temperature

power cords

2-16

1-8
2-23

power disconnect

ambient site

2-16

1-11

2-4

Cisco 7401ASR Installation and Configuration Guide

IN-8

OL-5419-01 B0

Index

safety information
SELV circuits

1-1, 2-4

2-17

trained service personnel

1-11

warning status level
environmental monitor
weight of system

3-5

A-1

workbench installation

2-5

Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0

IN-9



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 155
Page Mode                       : UseOutlines
Format                          : application/pdf
Title                           : 
Producer                        : iText 1.4.1 (by lowagie.com)
Country                         : 
Date                            : 
Language                        : 
Creator                         : FrameMaker 5.5.6p145
Access Level                    : 
Modify Date                     : 2004:10:20 17:14:06-07:00
Iapath                          : 
Ia Path                         : 
Create Date                     : 2004:10:20 17:13:07
Doc Type                        : 
Author                          : cmoyer
Content Type                    : 

EXIF Metadata provided by EXIF.tools