Cisco Systems Computer Hardware 78 16356 01 User Manual

Cisco Global Site Selector 4491  
Hardware Installation Guide  
December 2004  
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C O N T E N T S  
Preface xiii  
Audience xiv  
How to Use This Guide xv  
Symbols and Conventions xvii  
Warning Definition xviii  
Obtaining Documentation, Obtaining Support, and Security Guidelines xxii  
CHAPTER  
1
Introduction 1-1  
Introduction 1-1  
System Hardware Features 1-2  
Front Panel Features 1-3  
Ports and Connectors 1-6  
Console Port 1-6  
Ethernet Connectors 1-8  
CHAPTER  
2
Preparing for Installation 2-1  
Safety 2-2  
Warnings and Cautions 2-2  
General Precautions 2-6  
Maintaining Safety with Electricity 2-6  
Protecting Against Electrostatic Discharge 2-7  
Preparing Your Site for Installation 2-8  
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Contents  
Environmental 2-9  
Choosing a Site for Installation 2-9  
Ensuring Overcurrent Protection 2-10  
Grounding the GSS 2-10  
Creating a Safe Environment 2-10  
AC Power 2-10  
Cabling 2-11  
Precautions for Rack-Mounting 2-11  
Precautions for Products with Modems, Telecommunications, or Local Area  
Network Options 2-12  
CHAPTER  
3
Installing the GSS 3-1  
Unpacking and Inspecting the GSS 3-2  
If the Product is Damaged 3-2  
Installing Your GSS 3-3  
Installing the GSS in a Four-Post Rack 3-4  
Attaching the Telescopic Rails to the Rack Assembly 3-6  
Inserting the GSS into the Rack 3-11  
Installing the GSS on a Workbench or Tabletop 3-14  
Connecting AC Power 3-16  
Booting the GSS 3-17  
Establishing a Serial Console Connection 3-18  
Checking the Front Panel LEDs 3-19  
Removing or Replacing a GSS 3-20  
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Contents  
CHAPTER  
4
5
Checking the Basics 4-1  
Checking Connections 4-2  
CHAPTER  
Maintaining Your GSS 5-1  
Maintaining Your Site Environment 5-1  
Temperature 5-2  
Humidity 5-3  
Altitude 5-3  
Dust and Particles 5-4  
Corrosion 5-4  
Electrostatic Discharge 5-4  
Electromagnetic and Radio Frequency Interference 5-5  
Magnetism 5-6  
Power Source Interruptions 5-6  
Using Power Protection Devices 5-7  
Surge Protectors 5-7  
APPENDIX  
A
Specifications A-1  
Physical Specifications A-3  
Port Specifications A-3  
APPENDIX  
B
Connecting a Modem to the GSS Console Port B-1  
Configuring a Modem B-2  
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Contents  
Cabling a Modem to the GSS B-4  
INDEX  
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F I G U R E S  
Figure 1-1  
Figure 1-2  
Figure 1-3  
Figure 1-4  
Figure 1-5  
Figure 3-1  
Figure 3-2  
Figure 3-3  
Figure 3-4  
Figure 3-5  
Figure 3-6  
Figure 3-7  
Figure 3-8  
Figure 3-9  
Figure 3-10  
Figure 3-11  
Figure B-1  
Figure B-2  
Front Panel View 1-3  
LED Indicators 1-4  
Rear Panel View 1-5  
Console Port Connector Pin Numbers 1-6  
Ethernet Port 0 Pin Numbers 1-8  
Rack Rail Components 3-5  
Removing the Inner Server Rail 3-6  
Telescoping the Rail 3-7  
Attaching Front Rail to the Right Side of the Rack 3-8  
Telescopic Rail Adjustment Screws 3-9  
Attaching Back Rail to the Right Side of the Rack 3-10  
Attaching GSS to Right Rail 3-11  
Sliding the GSS into the Four-post Rack 3-12  
Attaching the Right Bracket to the Right Side of the GSS 3-13  
GSS Back Panel Ports and Connectors 3-15  
GSS 4491 Front Panel LEDs 3-19  
Console Port Connector Pin Numbers B-2  
Rear Panel Ports and Connectors B-4  
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Figures  
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T A B L E S  
Table 1-1  
Table 1-2  
Table 1-3  
Table 3-1  
Table 3-2  
Table A-1  
Table A-2  
Table A-3  
Table A-4  
Table B-1  
Table B-2  
Front Panel LED Indicators 1-4  
Console Port Connector Pinouts 1-7  
GSS Console Port Settings 1-7  
Four-Post Rack Components 3-5  
Front Panel LED Indicators 3-20  
AC Electrical Specifications A-1  
Environmental Specifications A-2  
Physical Specifications A-3  
Port Specifications A-3  
Console Port Connector Pinouts B-3  
Console Port Default Settings B-5  
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Tables  
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Preface  
This guide is intended to help you install your Cisco Global Site Selector 4491  
(GSS) and get it ready for operation. It describes how to prepare your site for  
installation, how to install the GSS in an equipment rack, and how to maintain and  
troubleshoot the GSS hardware.  
This preface contains the following major sections:  
Audience  
How to Use This Guide  
Related Documentation  
Symbols and Conventions  
Warning Definition  
Obtaining Documentation, Obtaining Support, and Security Guidelines  
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Preface  
Audience  
Audience  
Warning  
Only trained and qualified personnel should be allowed to install, replace, or  
service this equipment.  
This guide is intended for the following trained and qualified service personnel  
who are responsible for installing and operating the GSS:  
System installer  
Hardware technician  
System operator  
You should be familiar with networking equipment and cabling, and have a basic  
knowledge of electronic circuitry and wiring practices.  
To complete the installation, including the software configuration for the GSS,  
you should be familiar with basic networking principles and configurations,  
especially web page protocols.  
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Preface  
How to Use This Guide  
This section describes the chapters and contents in this guide.  
Chapter/Appendix  
Chapter 1, Introduction  
Describes the physical properties and provides a  
functional overview of the GSS.  
Chapter 2, Preparing for  
Installation  
Describes safety considerations and provides an  
overview of the installation and procedures you  
should perform before the actual installation.  
Chapter 3, Installing the  
GSS  
Describes how to install the hardware and connect  
the external network interface cables.  
Chapter 4, Troubleshooting Describes troubleshooting procedures for the  
the GSS Hardware  
hardware installation.  
Chapter 5, Maintaining  
Your GSS  
Contains the procedures for maintaining your GSS  
in proper operating condition.  
Appendix A, Specifications Lists the hardware specifications for the GSS.  
Appendix B, Connecting a Provides information for configuring a dial-up  
Modem to the GSS Console modem and connecting it to the console port on  
Port  
the GSS.  
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Preface  
Related Documentation  
Related Documentation  
In addition to this document, the GSS documentation set includes the following:  
Document Title  
Provides  
Regulatory Compliance  
Regulatory compliance and safety information for  
and Safety Information for the GSS.  
the Cisco Global Site  
Selector 4491  
Release Note for the Cisco Information on operating considerations, caveats,  
Global Site Selector  
Cisco Global Site Selector Information on getting your GSS setup, configured,  
Getting Started Guide and ready to perform global server load balancing.  
Cisco Global Site Selector Procedures on how to configure your GSS to  
and new CLI commands for the GSS software.  
Global Server  
Load-Balancing  
Configuration Guide  
perform global server load-balancing, such as  
configuring source address lists, domain lists,  
answers, answer groups, DNS sticky, network  
proximity, and DNS rules. This document also  
provides an overview of the GSS device and global  
server load-balancing as performed by the GSS.  
Cisco Global Site Selector Procedures necessary to properly set up, manage,  
Administration Guide  
and maintain your GSSM and individual GSS  
devices, including login security, software  
upgrades, GSSM database administration, and  
logging.  
Cisco Global Site Selector An alphabetical list of all GSS command-line  
Command Reference  
interface (CLI) commands including syntax,  
options, and related commands. This document  
also describes how to use the CLI interface.  
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Preface  
Symbols and Conventions  
Symbols and Conventions  
Graphical user interface elements use the following conventions:  
Bold text indicates a command in a paragraph.  
Courier textindicates text that appears in a command line, including the  
CLI prompt.  
Courier bold text indicates commands and text you enter in a command  
line.  
Italic text indicates the first occurrence of a new term, book title, and  
emphasized text.  
Lists use the following conventions:  
1. A numbered list indicates that the order of the list items is important.  
a. An alphabetical list indicates that the order of the secondary list items is  
important.  
A bulleted list indicates that the order of the list topics is unimportant.  
An indented list indicates that the order of the list subtopics is  
unimportant.  
Notes, cautionary statements, and safety warnings use these conventions:  
Note  
Means reader take note. Notes contain helpful suggestions or references to  
materials not contained in this manual.  
Caution  
Means reader be careful. You are capable of doing something that might result  
in equipment damage or loss of data.  
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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. Use the statement number provided at the end of each  
warning to locate its translation in the translated safety warnings that  
accompanied this device.  
SAVE THESE INSTRUCTIONS  
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. Gebruik het nummer van de verklaring  
onderaan de waarschuwing als u een vertaling van de waarschuwing die bij  
het apparaat wordt geleverd, wilt raadplegen.  
BEWAAR DEZE INSTRUCTIES  
Varoitus  
TÄRKEITÄ TURVALLISUUSOHJEITA  
Tämä varoitusmerkki merkitsee vaaraa. Tilanne voi aiheuttaa ruumiillisia  
vammoja. Ennen kuin käsittelet laitteistoa, huomioi sähköpiirien  
käsittelemiseen liittyvät riskit ja tutustu onnettomuuksien yleisiin  
ehkäisytapoihin. Turvallisuusvaroitusten käännökset löytyvät laitteen  
mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta  
varoitusten lopussa näkyvien lausuntonumeroiden avulla.  
SÄILYTÄ NÄMÄ OHJEET  
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Preface  
Warning Definition  
Attention  
IMPORTANTES INFORMATIONS DE SÉCURITÉ  
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une  
situation pouvant entraîner des blessures ou des dommages corporels. Avant  
de travailler sur un équipement, soyez conscient des dangers liés aux circuits  
électriques et familiarisez-vous avec les procédures couramment utilisées  
pour éviter les accidents. Pour prendre connaissance des traductions des  
avertissements figurant dans les consignes de sécurité traduites qui  
accompagnent cet appareil, référez-vous au numéro de l'instruction situé à la  
fin de chaque avertissement.  
CONSERVEZ CES INFORMATIONS  
WICHTIGE SICHERHEITSHINWEISE  
Warnung  
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die  
zu Verletzungen führen kann. Machen Sie sich vor der Arbeit mit Geräten mit  
den Gefahren elektrischer Schaltungen und den üblichen Verfahren zur  
Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder Warnung  
angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den  
übersetzten Sicherheitshinweisen, die zusammen mit diesem Gerät  
ausgeliefert wurden.  
BEWAHREN SIE DIESE HINWEISE GUT AUF.  
IMPORTANTI ISTRUZIONI SULLA SICUREZZA  
Avvertenza  
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.  
Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per  
individuare le traduzioni delle avvertenze riportate in questo documento.  
CONSERVARE QUESTE ISTRUZIONI  
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Warning Definition  
Advarsel  
VIKTIGE SIKKERHETSINSTRUKSJONER  
Dette advarselssymbolet betyr fare. Du er i en situasjon som kan føre til skade  
på person. Før du begynner å arbeide med noe av utstyret, må du være  
oppmerksom på farene forbundet med elektriske kretser, og kjenne til  
standardprosedyrer for å forhindre ulykker. Bruk nummeret i slutten av hver  
advarsel for å finne oversettelsen i de oversatte sikkerhetsadvarslene som  
fulgte med denne enheten.  
TA VARE PÅ DISSE INSTRUKSJONENE  
Aviso  
INSTRUÇÕES IMPORTANTES DE SEGURANÇA  
Este símbolo de aviso significa perigo. Você está em uma situação que poderá  
ser causadora de lesões corporais. Antes de iniciar a utilização de qualquer  
equipamento, tenha conhecimento dos perigos envolvidos no manuseio de  
circuitos elétricos e familiarize-se com as práticas habituais de prevenção de  
acidentes. Utilize o número da instrução fornecido ao final de cada aviso para  
localizar sua tradução nos avisos de segurança traduzidos que acompanham  
este dispositivo.  
GUARDE ESTAS INSTRUÇÕES  
¡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. Al final de cada advertencia encontrará el número que le ayudará  
a encontrar el texto traducido en el apartado de traducciones que acompaña  
a este dispositivo.  
GUARDE ESTAS INSTRUCCIONES  
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Preface  
Warning Definition  
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. Använd det nummer som finns i slutet av varje varning för  
att hitta dess översättning i de översatta säkerhetsvarningar som medföljer  
denna anordning.  
SPARA DESSA ANVISNINGAR  
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Preface  
Obtaining Documentation, Obtaining Support, and Security Guidelines  
Obtaining Documentation, Obtaining Support, and  
Security Guidelines  
For information on obtaining documentation, obtaining support, providing  
documentation feedback, security guidelines, and also recommended aliases and  
general Cisco documents, see the monthly What’s New in Cisco Product  
Documentation, which also lists all new and revised Cisco technical  
documentation, at:  
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C H A P T E R  
1
Introduction  
This chapter provides a basic functional overview of the Cisco Global Site  
Selector 4491 (GSS) and describes the hardware, major components, and front  
and rear panel indicators and controls.  
This chapter contains the following major sections:  
Introduction  
System Hardware Features  
Ports and Connectors  
Introduction  
The GSS is a networking product that provides site selection services that are  
critical for disaster recovery deployments involving Internet and intranet data  
centers. The GSS globally load balances traffic between geographically  
distributed data centers managed by other server load balancers (SLBs), such as:  
Cisco CSS 11500, CSS 11000, or CSS 11150  
Cisco Content Switching Module (CSM) for the Catalyst 6500 series  
switches  
Cisco LocalDirector  
Cisco IOS SLB  
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Chapter 1 Introduction  
System Hardware Features  
The GSS is the cornerstone of disaster recovery in such distributed deployments  
and enables businesses to confidently deploy global Internet and intranet  
applications with the knowledge that users will be quickly routed to standby data  
centers should problems occur.  
The GSS is deployed at strategic locations within your network. The GSS  
performs two major functions when deployed with other SLBs by:  
Taking an active role in the domain name server (DNS) infrastructure,  
connecting clients to SLBs that support the requested website.  
Continuously monitoring the load and availability of SLBs in its network,  
selecting the SLB that is most able to answer each client request.  
By off-loading DNS resolution from traditional DNS servers, the GSS optimizes  
global site selection and increases DNS responsiveness. The GSS increases the  
fault tolerance and scalability of large websites and data centers through its  
monitoring of load and availability.  
System Hardware Features  
The GSS is designed for AC-input power and has a single AC-input power supply.  
The GSS includes:  
An integrated dual-port Ethernet controller that provides an interface for  
connecting to 10-Mbps, 100-Mbps, or 1000-Mbps networks.  
Two 10BASE-T/100BASE-TX/1000BASE-TX Ethernet ports with RJ-45  
receptacles.  
Both Ethernet ports support autonegotitate, full-duplex, or half-duplex operation  
on an Ethernet LAN.  
This section includes the following topics:  
Front Panel Features  
Rear Panel Features  
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Chapter 1 Introduction  
System Hardware Features  
Front Panel Features  
The GSS front panel contains LED indicators, a power button, and a CD-ROM  
drive. Figure 1-1 illustrates the GSS front panel.  
Figure 1-1 Front Panel View  
1
3
2
4
0
1
i
5
6
8
7
1
2
3
CD-ROM drive  
5
USB port (not supported)  
CD-ROM indicator  
6
7
VGA port (not supported)  
CD-ROM eject button  
Power button with built-in power indicator.  
The power button turns power on or off. To  
turn chassis power off, press and hold this  
switch for approximately four seconds.  
4
CD-ROM emergency eject button  
8
System ID button. The System ID button  
allows you to identify the GSS when it is  
installed in a single rack with multiple GSS  
devices. The LED illuminates on the rear  
panel of the active GSS.  
Press the front System ID button to  
activate the blue LED on the rear panel  
of the GSS.  
Press the rear System ID button to turn  
off the LED on the rear panel.  
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Chapter 1 Introduction  
System Hardware Features  
Figure 1-2 shows the LED indicators on the front panel of the GSS. Table 1-1  
describes their function.  
Figure 1-2 LED Indicators  
3
1
2
4
0
1
i
5
Table 1-1 Front Panel LED Indicators  
Indicator  
Color  
State  
Indicates  
Normal operation  
1
2
Power Spike  
Blue  
On  
Blinking A power surge has occurred  
On Ethernet 0 is connected to a network  
Blinking An active link connection on the  
10/100/1000BASE-T interface for Ethernet port 0  
Ethernet 1 is connected to a network  
Blinking An active link connection on the  
10/100/1000BASE-T interface for Ethernet port 1  
Blinking The hard drive is in use  
On The GSS is on  
Blinking The GSS is in standby mode  
Ethernet 0 Link  
Green  
Ethernet 0 Activity Green  
3
Ethernet 1 Link Green  
On  
Ethernet 1 Activity Green  
Hard Drive Activity Green  
4
5
Power  
Green  
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Chapter 1 Introduction  
System Hardware Features  
Rear Panel Features  
The rear panel contains the AC power receptacle, Ethernet connectors, and the  
console/serial connector. Figure 1-3 illustrates the rear panel ports and  
connectors.  
Figure 1-3 Rear Panel View  
i
1
2
3
5
6
7
8
4
9
1
2
3
AC power receptacle  
PS/2 mouse port (not supported)  
6
8
VGA port (not supported)  
System ID button/System status LED  
PS/2 keyboard port (not supported)  
RJ-45 Ethernet 1 connector with  
10/100/1000-Mbit/s operation  
4
5
USB ports (not supported)  
9
RJ-45 Ethernet 0 connector with  
10/100/1000-Mbit/s operation and status  
LEDs  
Console/serial connector (see Figure 1-4)  
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Chapter 1 Introduction  
Ports and Connectors  
Ports and Connectors  
The GSS supports the following port connectors on the rear of the chassis:  
Console Port  
Ethernet Connectors  
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.  
Console Port  
The GSS has one standard RS-232 serial port located on the rear panel that  
operates as the console port. The integrated serial port uses a 9-pin male D-shell  
connector. Figure 1-4 shows the pin number assignments for the 9-pin port.  
Refer to Table 1-3 for the console port connector pinouts.  
Figure 1-4 Console Port Connector Pin Numbers  
1
5
6
9
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Ports and Connectors  
Table 1-2 Console Port Connector Pinouts  
Pin  
Signal  
DCD  
SIN  
I/O  
Definition  
1
I
Data carrier detect  
Serial input  
2
I
3
SOUT  
DTR  
GND  
DSR  
RTS  
CTS  
RI  
O
Serial output  
4
O
Data terminal ready  
Signal ground  
Data set ready  
Request to send  
Clear to send  
5
N/A  
6
I
7
O
8
I
9
I
Ring indicator  
Chassis ground  
Shell  
N/A  
N/A  
The console port operates at the settings outlined in Table 1-3. These settings are  
not user-configurable.  
Table 1-3 GSS Console Port Settings  
Parameters  
Baud  
Settings  
9600  
Data Bits  
Parity  
8
None  
Stop Bits  
Terminal Type  
Flow Control  
1
VT100/ANSI  
None  
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Ports and Connectors  
Ethernet Connectors  
The GSS has two integrated 10/100/1000–megabit-per-second (Mbps) Ethernet  
connectors. The Ethernet controller provides an interface for connecting to  
10-Mbps, 100-Mbps, or 1000-Mbps networks and supports autonegotitate,  
full-duplex, or half-duplex operation on an Ethernet LAN.  
To access the Ethernet port, connect a Category 3, 4, or 5 unshielded twisted-pair  
(UTP) cable to the RJ-45 connector on the back of the chassis.  
Note  
The 100BASE-TX/1000BASE-TX Ethernet standard requires that you use  
standard four twisted-pair Category 5e cable at lengths up to 328.08 ft. (100 m).  
Figure 1-5 illustrates the pin number assignments for the Ethernet 0 RJ-45 port.  
Figure 1-5 Ethernet Port 0 Pin Numbers  
Link LED  
(green)  
Activity (TX/RX)LED  
(green)  
8
1
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C H A P T E R  
2
Preparing for Installation  
This chapter contains important safety information you should review before  
working with the GSS. Use the following guidelines to ensure your own personal  
safety and to help protect your GSS from potential damage.  
Read the Regulatory Compliance and Safety Information for the Cisco Global Site  
Selector 4491 document before you prepare the GSS for installation. This  
This chapter contains the following major sections:  
Safety  
Preparing Your Site for Installation  
Precautions for Rack-Mounting  
Precautions for Products with Modems, Telecommunications, or Local Area  
Network Options  
Required Tools and Equipment  
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Safety  
Safety  
This section provides safety information for installing the GSS. It includes the  
following topics:  
Warnings and Cautions  
General Precautions  
Maintaining Safety with Electricity  
Protecting Against Electrostatic Discharge  
Warnings and Cautions  
Read the installation instructions in this document before you connect the GSS to  
its power source. Failure to read and follow these guidelines may lead to an  
unsuccessful installation and possibly damage the GSS and components.  
You should observe the following safety guidelines when working with any  
equipment that connects to electrical power or telephone wiring. They can help  
you avoid injuring yourself or damaging the GSS.  
Note  
The English warnings in this document are followed by a statement number. To  
see the translations of a warning into other languages, look up its statement  
number in the Regulatory Compliance and Safety Information for the Cisco  
Global Site Selector 4491.  
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Safety  
The following warnings and cautions are provided to help you prevent injury to  
yourself or damage to the devices:  
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. Use the statement number provided at the end of each  
warning to locate its translation in the translated safety warnings that  
accompanied this device. Statement 1071  
SAVE THESE INSTRUCTIONS  
Warning  
Warning  
The safety cover is an integral part of the product. Do not operate the unit  
without the safety cover installed. Operating the unit without the cover in place  
will invalidate the safety approvals and pose a risk of fire and electrical  
hazards. Statement 117  
This equipment must be grounded. Never defeat the ground conductor or  
operate the equipment in the absence of a suitably installed ground conductor.  
Contact the appropriate electrical inspection authority or an electrician if you  
are uncertain that suitable grounding is available. Statement 1024  
Warning  
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.  
Statement 12  
Before opening the chassis, disconnect the telephone-network cables to avoid  
contact with telephone-network voltages. Statement 1041  
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Safety  
Warning  
Warning  
Warning  
Warning  
This unit might have more than one power cord. To reduce the risk of electrical  
shock, disconnect all power supply cords before servicing the unit. Statement  
106  
This product requires short-circuit (overcurrent) protection, to be provided as  
part of the building installation. Install only in accordance with national and  
local wiring regulations. Statement 1045  
This equipment is intended to be grounded to comply with emission and  
immunity requirements. Ensure that the switch functional ground lug is  
connected to earth ground during normal use. Statement 1064  
Blank faceplates and cover panels serve three important functions: they  
prevent exposure to hazardous voltages and currents inside the chassis; they  
contain electromagnetic interference (EMI) that might disrupt other equipment;  
and they direct the flow of cooling air through the chassis. Do not operate the  
system unless all cards, faceplates, front covers, and rear covers are in place.  
Statement 1029  
Warning  
Warning  
Do not work on the system or connect or disconnect cables during periods of  
lightning activity. Statement 1001  
.
The power supply circuitry for the equipment can constitute an energy hazard.  
Before you install or replace the equipment, remove all jewelry (including  
rings, necklaces, and watches). Metal objects can come into contact with  
exposed power supply wiring or circuitry inside the DSLAM equipment. This  
could cause the metal objects to heat up and cause serious burns or weld the  
metal object to the equipment. Statement 207  
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Safety  
Warning  
Warning  
Warning  
Warning  
Ultimate disposal of this product should be handled according to all national  
laws and regulations. Statement 1040  
Before working on a system that has an On/Off switch, turn OFF the power and  
unplug the power cord. Statement 1  
Read the installation instructions before you connect the system to its power  
source. Statement 1004  
There is the danger of explosion if the battery is replaced incorrectly. Replace  
the battery only with the same or equivalent type recommended by the  
manufacturer. Dispose of used batteries according to the manufacturer’s  
instructions. Statement 1015  
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Safety  
General Precautions  
Observe the following general precautions when using and working with your  
GSS:  
Keep your GSS components away from radiators and heat sources, and do not  
block cooling vents.  
Do not spill food or liquids on your GSS components, and never operate the  
product in a wet environment. If the GSS gets wet, see Chapter 4,  
Troubleshooting the GSS Hardware or contact the Cisco Technical Assistance  
Center. For instructions on contacting the Technical Assistance Center, see  
the Preface.  
Do not push any objects into the openings of your GSS components. Doing  
so can cause fire or electric shock by shorting out interior components.  
Position cables and power cables carefully; route all cables and the power  
cable and plug so that they cannot be stepped on or tripped over. Be sure that  
nothing rests on your GSS cables or the power cable.  
Do not modify power cables or plugs. Consult a licensed electrician or your  
power company for site modifications. Always follow your local/national  
wiring rules.  
To help avoid possible damage to the system board, wait 5 seconds after  
turning off the GSS before removing a component from the system board or  
disconnecting a peripheral device from the GSS.  
Maintaining Safety with Electricity  
Follow these guidelines when working on equipment powered by electricity:  
If any of the following conditions occur contact the Cisco Technical  
Assistance Center:  
The power cable or plug is damaged.  
An object has fallen into the product.  
The product has been exposed to water.  
The product has been dropped or damaged.  
The product does not operate correctly when you follow the operating  
instructions.  
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Safety  
Use the correct external power source. Operate the product only from the type  
of power source indicated on the electrical ratings label. If you are not sure  
of the type of power source required, consult the Cisco Technical Assistance  
Center or a local power company.  
Use only approved power cable(s). You have been provided with a power  
cable for your GSS that is intended for its use (approved for use in your  
country, based on the shipping location). Should you have to purchase a  
power cable, ensure that it is rated for the product and for the voltage and  
current marked on the product’s electrical ratings label. The voltage and  
current rating of the cable should be greater than the ratings marked on the  
product.  
To help prevent electric shock, plug the GSS, components, and peripheral  
power cables into properly grounded electrical outlets. These cables are  
equipped with three-prong plugs to help ensure proper grounding. Do not use  
adapter plugs or remove the grounding prong from a cable.  
Observe power strip ratings. Make sure that the total ampere rating of all  
products plugged into the power strip does not exceed 80% of the rating.  
To help protect your GSS and components from sudden, transient increases  
and decreases in electrical power, use a surge suppressor, line conditioner, or  
uninterruptible power supply (UPS).  
Do not modify power cables or plugs. Consult a licensed electrician or your  
power company for site modifications. Always follow your local and national  
wiring rules.  
Protecting Against Electrostatic Discharge  
Static electricity can harm delicate components inside your computer. To prevent  
static damage, discharge static electricity from your body before you touch any of  
your computer’s electronic components, such as the microprocessor. You can do  
so by touching an unpainted metal surface on the computer chassis.  
As you continue to work inside the computer, periodically touch an unpainted  
metal surface to remove any static charge your body may have accumulated.  
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Preparing Your Site for Installation  
You can also take the following steps to prevent damage from electrostatic  
discharge (ESD):  
When unpacking a static-sensitive component from its shipping carton, do not  
remove the component from the antistatic packing material until you are  
ready to install the component in your computer. Just before unwrapping the  
antistatic packaging, be sure to discharge static electricity from your body.  
When transporting a sensitive component, first place it in an antistatic  
container or packaging.  
Handle all sensitive components in a static-safe area. If possible, use  
antistatic floor pads and workbench pads.  
Preparing Your Site for Installation  
This section describes the requirements your site must meet for safe installation  
and operation of your GSS. Before you select an installation site for the GSS, read  
the electrical, environmental, and physical requirements as described in  
Appendix A, Specifications. Ensure that your site is properly prepared before  
beginning installation.  
This section includes the following requirements:  
Environmental  
Choosing a Site for Installation  
Ensuring Overcurrent Protection  
Grounding the GSS  
Creating a Safe Environment  
AC Power  
Cabling  
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Environmental  
When planning your site layout and equipment locations, remember the  
precautions described in this section to help avoid equipment failures and reduce  
the possibility of environmentally caused shutdowns. If you are experiencing  
shutdowns or unusually high errors with your existing equipment, these  
precautions will help you isolate the cause of failures and prevent future  
problems.  
Use the following precautions when planning the operating environment for your  
GSS.  
Always follow the ESD-prevention procedures described in the “Protecting  
Against Electrostatic Discharge”section to avoid damage to equipment.  
Damage from static discharge can cause immediate or intermittent equipment  
failure.  
Make sure that the chassis cover is secure. The chassis allows cooling air to  
flow effectively within it. An open chassis allows air leaks, which could  
interrupt and redirect the flow of cooling air from internal components.  
Electrical equipment generates heat. Ambient air temperature might not be  
adequate to cool equipment to acceptable operating temperatures without  
adequate circulation. Make sure that the room in which you operate has  
adequate air circulation.  
Choosing a Site for Installation  
Warning  
This unit is intended for installation in restricted access areas. A restricted  
access area is where access can only be gained by service personnel through  
the use of a special tool, lock and key, or other means of security, and is  
controlled by the authority responsible for the location.  
Choose a site with a dry, clean, well-ventilated and air-conditioned area.  
Choose a site that maintains an ambient temperature of 10° to 35°C  
(50° to 95°F).  
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Preparing Your Site for Installation  
Ensuring Overcurrent Protection  
The GSS relies on the protective devices in the building installation for protection  
against short-circuit, overcurrent, and earth (grounding) fault. Ensure that the  
protective devices in the building installation are properly rated to protect the  
GSS, and that they comply with national and local codes.  
Grounding the GSS  
Warning  
Never defeat the ground conductor or operate the equipment in the absence of  
a suitably installed ground conductor. Contact the appropriate electrical  
inspection authority or an electrician if you are uncertain that suitable  
grounding is available.  
Creating a Safe Environment  
Follow these guidelines to create a safe operating environment:  
Keep tools and chassis components off the floor and away from foot traffic.  
Clear the area of possible hazards, such as moist floors, ungrounded power  
extension cables, and missing safety grounds.  
Keep the area around the chassis free from dust and foreign conductive  
material (such as metal flakes from nearby construction activity).  
AC Power  
Ensure that the plug-socket combination is accessible at all times, because it  
serves as the main disconnecting device. Refer to Appendix A, Specifications, for  
the GSS power requirements.  
Warning  
This product requires short-circuit (overcurrent) protection, to be provided as  
part of the building installation. Install only in accordance with national and  
local wiring regulations.  
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Precautions for Rack-Mounting  
Cabling  
Use the cables in the accessory kit to connect the GSS console port to a console  
or computer that is running a console program. In addition to using the console  
cable, use the provided standard Ethernet cable to connect the GSS to your  
network. Refer to Chapter 1, Introduction, for information on cable requirements.  
Precautions for Rack-Mounting  
Warning  
To prevent bodily injury when mounting or servicing this unit in a rack, you must  
take special precautions to ensure that the system remains stable. The  
following guidelines are provided to ensure your safety:  
Observe the following precautions for rack stability and safety. Also refer to the  
rack installation documentation accompanying the rack for specific warnings and  
caution statements and procedures.  
Note  
Component refers to any server, storage system, or appliance, and to various  
peripherals or supporting hardware.  
Do not move large racks by yourself. Due to the height and weight of the rack,  
a minimum of two people are needed to accomplish this task.  
Ensure that the rack is level and stable before extending a component from  
the rack.  
Do not overload the AC supply branch circuit that provides power to the rack.  
The total rack load should not exceed 80% of the branch circuit rating.  
Ensure that proper airflow is provided to components in the rack.  
Do not step or stand on any system or component when servicing other  
systems and components in a rack.  
This unit should be mounted at the bottom of the rack if it is the only unit in  
the rack.  
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Chapter 2 Preparing for Installation  
Precautions for Products with Modems, Telecommunications, or Local Area Network Options  
When mounting this unit in a partially filled rack, load the rack from the  
bottom to the top with the heaviest component at the bottom of the rack.  
If the rack is provided with stabilizing devices, install the stabilizers before  
mounting or servicing the unit in the rack.  
Precautions for Products with Modems,  
Telecommunications, or Local Area Network  
Options  
Observe the following guidelines when working with these components:  
Do not connect or use a modem or telephone during a lighting storm. There  
may be a risk of electrical shock from lightning.  
Never connect or use a modem or telephone in a wet environment.  
Do not plug a modem or telephone cable into the Ethernet connector.  
Disconnect the modem cable before opening a product enclosure, touching or  
installing internal components, or touching an uninsulate4d modem cable or  
jack.  
Do not use a telephone line to report a gas leak while you are in the vicinity  
of the leak.  
Required Tools and Equipment  
You need the following tools and equipment to install the GSS:  
Number 2 Phillips screwdriver  
Tape measure and level  
Antistatic mat or antistatic foam  
ESD grounding strap with an alligator termination clip  
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C H A P T E R  
3
Installing the GSS  
This chapter explains how to install a GSS in an equipment rack, or on a table or  
workbench. This chapter also provides instructions for connecting cables, AC  
power, and for booting the GSS.  
Warning  
Read the installation instructions before connecting the GSS to the  
power source.  
This chapter contains the following major sections:  
Installing Your GSS  
Connecting Cables  
Connecting AC Power  
Booting the GSS  
Establishing a Serial Console Connection  
Checking the Front Panel LEDs  
Removing or Replacing a GSS  
Before you begin the installation, be sure you have read:  
Chapter 2, Preparing for Installation  
Regulatory Compliance and Safety Information for the Cisco Global Site  
Selector 4491  
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Unpacking and Inspecting the GSS  
Unpacking and Inspecting the GSS  
The GSS shipment contains the following items:  
One RJ-45 to female 25-pin sub-d connector  
Two RJ-45 to female 9-pin sub-d connectors  
One RJ-45 console cable  
One four-post rack mount kit  
One two-post rack mount kit  
Four rubber feet  
Cisco Product Documentation CD-ROM and Warranty Package  
Cisco Global Site Selector 4491 Hardware Installation Guide  
Regulatory Compliance and Safety Information for the Cisco Global Site  
Selector 4491  
The GSS is shipped in a protective shipping carton. It is shipped as a  
self-contained chassis; no components can be added or removed.  
Follow these steps to unpack the GSS:  
1. Remove the GSS accessories from the shipping carton. Save the packing  
materials in case you need to repack the GSS later.  
2. Check the configuration of the GSS and the accessories against the items  
listed on the packing slip. Report any discrepancies as described in “If the  
Product is Damaged”.  
3. Before installing the GSS, review the information outlined in Chapter 2,  
Preparing for Installation.  
If the Product is Damaged  
If any portion of the unit or component is damaged in transit, forward an  
immediate request to the delivering carrier to perform an inspection of the product  
and to prepare a damage report. Save the container and all packing materials until  
the contents are verified.  
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Chapter 3 Installing the GSS  
Installing Your GSS  
Concurrently, report the nature and extent of the damage to Customer Service.  
Report the problem or deficiency to Customer Service along with the model  
number and serial number. Upon receipt of this information, you will be provided  
with service instructions, or a Return Material Authorization (RMA) number and  
shipping information. To obtain assistance, refer to the “Preface”.  
Installing Your GSS  
Place the GSS in the desired location. You can mount it in a rack for your  
convenience, or place it on a solid, stable surface. If you do not plan to install the  
GSS in an equipment rack, proceed to the “Installing the GSS on a Workbench or  
Tabletop” section.  
Racks are marked in vertical increments of 1.75 inches (4.44 cm). Each increment  
is referred to as a rack unit (RU). A 1-RU device is 1.75 inches (4.44 cm) tall.  
Warning  
To prevent bodily injury when mounting or servicing this unit in a rack, you must  
take special precautions to ensure that the GSS remains stable. The following  
guidelines are provided to ensure your safety:  
This unit should be mounted at the bottom of the rack if it is the only unit in the  
rack.  
When mounting this unit in a partially filled rack, load the rack from the bottom  
If the rack is provided with stabilizing devices, install the stabilizers before mounting or  
servicing the unit in the rack. Statement 1006  
This section contains the following procedures:  
Installing the GSS in a Four-Post Rack  
Attaching a Two-Post Rack Bracket to the GSS  
Installing the GSS on a Workbench or Tabletop  
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Chapter 3 Installing the GSS  
Installing Your GSS  
Installing the GSS in a Four-Post Rack  
This section provides instructions for installing the GSS in a four-post rack. The  
rack must be properly secured to the floor, ceiling, or upper wall, and where  
applicable, to adjacent racks. The rack should be secured using floor and wall  
fasteners and bracing as specified by industry standards.  
Before installing the GSS in a rack, be sure you have read Chapter 2, Preparing  
for Installation, to familiarize yourself with the proper site and environmental  
conditions. Failure to read and follow these guidelines may lead to an  
unsuccessful installation and possible damage to the GSS and its components.  
Perform the steps below when installing and servicing the GSS.  
When installing and servicing the GSS:  
Disconnect all power and external cables before installing the GSS.  
Install the GSS in compliance with your local and national electrical codes:  
United States: National Fire Protection Association (NFPA) 70; United  
States National Electrical Code.  
Canada: Canadian Electrical Code, Part, I, CSA C22.1.  
Other countries: If local and national electrical codes are not available,  
see IEC 364, Part 1 through Part 7.  
Do not perform any action that creates a potential hazard to people or makes  
the equipment unsafe.  
Do not attempt to install the GSS in a rack that has not been securely anchored  
in place. Damage to the GSS and personal injury may result.  
Due to the size and weight of the GSS, never attempt to install it by yourself.  
Refer to Chapter 2, Preparing for Installation, the “Precautions for  
Rack-Mounting” section for additional safety information on rack installation.  
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Chapter 3 Installing the GSS  
Installing Your GSS  
The GSS can be installed in a system 1U rack. Figure 3-1 illustrates the four-post  
rack rail components. Table 3-1 describes each four-post rack rail component.  
Figure 3-1 Rack Rail Components  
1
2
5
4
3
Table 3-1 Four-Post Rack Components  
1
2
3
Left side telescopic rail  
4
5
Round head screws (6)  
Cage nuts (6)  
Right side telescopic rail  
Round head screws with washer (9)  
The procedure to install the GSS into a four-post rack is divided into two parts:  
Attaching the Telescopic Rails to the Rack Assembly  
Inserting the GSS into the Rack  
To install the GSS in a four-post rack by using a two-post rack bracket, see the  
“Attaching a Two-Post Rack Bracket to the GSS” section.  
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Attaching the Telescopic Rails to the Rack Assembly  
To attach the telescopic rails to the four-post rack assembly:  
1. Extend the rail (1) as far as it will go, as shown in Figure 3-2.  
2. Press the green spring plate (2) on the extended telescopic rail and remove the  
inner rail. Set the rail aside for attachment to the GSS (see the “Inserting the  
GSS into the Rack” section).  
Figure 3-2 Removing the Inner Server Rail  
1
2
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Chapter 3 Installing the GSS  
Installing Your GSS  
3. Using a screwdriver (1), gently press the button labelled “Push” and move the  
middle section of the outer telescopic rail to its end position, as shown in  
Figure 3-3.  
Figure 3-3 Telescoping the Rail  
1
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Installing Your GSS  
4. Select a location in the rack to mount the GSS and attach the front end of the  
right outer telescopic rail to the right side of the rack, as show in Figure 3-4.  
Note  
Racks that contain tapped mounting holes do not require the cage  
nuts (3) shown in Figure 3-4.  
Figure 3-4 Attaching Front Rail to the Right Side of the Rack  
3
1
2
1
2
Round head screw and washer  
3
Cage nut  
Right outer telescopic rail—front  
5. Extend the middle rail from the front of the rack to have free access to the two  
adjustment screws located at the rear of the outer telescopic rail (Figure 3-5).  
Loosen the two adjustment screws to leave some play when attaching the  
back end of the outer telescopic rail to the rack, then push the middle rail back  
into its original position. After the rail is attached to the rack, you can tighten  
the two adjustment screws.  
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Installing Your GSS  
Figure 3-5 Telescopic Rail Adjustment Screws  
1
3
2
1
2
Right and left rails  
3
Right rail adjustment screws  
Left rail adjustment screws  
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Chapter 3 Installing the GSS  
Installing Your GSS  
6. Position and align the back end of the outer telescopic rail with the right side  
of the rack. Ensure that the back end of the rail is aligned with the front end  
and that it is flush with the rack post.  
7. Attach the back end of the rail to the right side of the rack, as shown in  
Figure 3-6.  
Note  
Racks that contain tapped mounting holes do not require the cage  
nuts (3) shown in Figure 3-6.  
Figure 3-6 Attaching Back Rail to the Right Side of the Rack  
1
2
3
1
2
Round head screw and washer  
Right outer telescopic rail—rear  
3
Cage nut  
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Chapter 3 Installing the GSS  
Installing Your GSS  
8. Repeat steps 1 through 7 with the left side rail and rack assembly.  
9. Tighten the two adjustment screws located at the rear of the two outer  
telescopic rails (see Figure 3-5).  
Inserting the GSS into the Rack  
To insert the GSS into the four-post rack:  
1. Secure the inner rail (1) to GSS using three round head screws (2), as shown  
in Figure 3-7. Repeat this step for the other rail.  
Figure 3-7 Attaching GSS to Right Rail  
0
1
i
2
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Chapter 3 Installing the GSS  
Installing Your GSS  
2. Insert the GSS and inner rail into the two outer telescopic rails, as shown in  
Figure 3-8.  
Figure 3-8 Sliding the GSS into the Four-post Rack  
0
1
i
3. Slide the GSS and inner rails backward and forward in the two outer  
telescopic rail two or three times until the GSS seats properly in the rack.  
Attaching a Two-Post Rack Bracket to the GSS  
You may install the GSS in either a four-post rack or a two-post rack by using the  
two-post rack bracket included in the accessory kit.  
To attach a two-post rack bracket to the GSS:  
1. Place the right-hand bracket on the right side of the GSS as shown in  
Figure 3-9. Align the bracket with the three screw holes in the GSS and use  
three round head screws to secure the bracket.  
Repeat this step to attach the other bracket to the GSS.  
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Installing Your GSS  
Figure 3-9 Attaching the Right Bracket to the Right Side of the GSS  
0
1
i
2
1
1
Bracket  
2
Round head screws (6)  
2. Select a location in the rack to mount the GSS, then position the GSS and  
brackets in the rack.  
3. Align the right side bracket on the GSS to the front of the rack, then insert  
and tighten the two round head retaining screws to secure the GSS to the rack.  
Repeat this step to secure the left side bracket to the rack.  
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Installing Your GSS  
Installing the GSS on a Workbench or Tabletop  
When you install a GSS on a workbench or tabletop, ensure that the surface is  
clean and in a secure location and that you have complied with the following  
requirements:  
The chassis should be installed off the floor. Dust that accumulates on the  
floor is drawn into the interior of the chassis by the cooling fans. Excessive  
dust inside the GSS can cause overtemperature conditions and component  
failures.  
There must be approximately 19 inches (48.26 cm) of clearance at the front  
and rear of the chassis for accessing network cables and equipment.  
The GSS must receive adequate ventilation.  
Follow these steps to install the GSS on a workbench or tabletop:  
1. Remove any debris and dust from the tabletop or workbench, as well as from  
the surrounding area. Ensure that your path between the GSS and its new  
location is unobstructed.  
2. Place one rubber foot in each corner on the bottom of the GSS. The rubber  
feet have an adhesive backing. Peel the protective tape off the adhesive and  
adhere the feet to the bottom of a clean chassis surface.  
3. Place the chassis on the tabletop or workbench.  
4. Ensure that no exhaust air from other equipment will be drawn into the  
chassis. Also, ensure that there is adequate clearance at the front and rear of  
the chassis.  
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Chapter 3 Installing the GSS  
Connecting Cables  
Connecting Cables  
Warning  
Do not work on the GSS or connect or disconnect cables during periods of  
lightning activity.  
To connect network and console cables to your GSS 4491:  
1. For network connections, connect a Category 3, 4, or 5 unshielded  
twisted-pair (UTP) cable to the Ethernet 0 or Ethernet 1 connector on the GSS  
back panel (Figure 3-10).  
Note  
The 100BASE-TX/1000BASE-TX Ethernet standard requires that  
you use standard four twisted-pair Category 5e cable at lengths up to  
328.08 ft. (100 m).  
Figure 3-10 GSS Back Panel Ports and Connectors  
i
1
2
3
4
1
2
AC power receptacle  
3
4
RJ-45 Ethernet 1 connector with  
10/100/1000-Mbit/s operation  
Console/serial connector  
RJ-45 Ethernet 0 connector with  
10/100/1000-Mbit/s operation  
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Chapter 3 Installing the GSS  
Connecting AC Power  
2. Connect the other end of the network cable to a hub or switch in your  
network.  
3. For console connections, plug the cable into the console port on the GSS back  
panel.  
4. Connect the other end of the console cable to a console or a  
communications server.  
Connecting AC Power  
Warning  
This equipment must be grounded. Never defeat the ground conductor or operate  
the equipment in the absence of a suitably installed ground conductor. Contact  
the appropriate electrical inspection authority or an electrician if you are uncertain  
that suitable grounding is available. Statement 1024  
To connect AC power to your GSS:  
1. Ensure that you have reviewed the safety information outlined in Chapter 2,  
Preparing for Installation.  
2. Plug the AC power cord into the power cord receptacle at the rear of the GSS  
(see Figure 3-10).  
3. Connect the other end of the power cord to a power source.  
4. Power up all externally-connected devices.  
5. Press the power control button on the front of the GSS.  
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Booting the GSS  
Booting the GSS  
When you power up the GSS, the boot process:  
Performs hardware initialization and power-on self tests  
Initializes the BIOS  
Initializes the Linux boot manager, LILO (Linux Loader)  
Boots the GSS image (kernel and software)  
Displays the startup banner and splash screen for strong encryption  
Prompts you to log in to the GSS  
Note  
During power-up, the green power LED on the front of the GSS is on.  
At this point, you are ready to use the GSS. Refer to the:  
Cisco Global Site Selector Getting Started Guide for details on setting up and  
configuring the GSS device  
Cisco Global Site Selector Administration Guide for procedures to properly  
manage and maintain your GSSM and GSS devices  
Cisco Global Site Selector Global Server Load-Balancing Configuration  
Guide for procedures to configure your GSS devices to perform global server  
load balancing  
If you are booting the GSS for the first time and it boots without a  
startup-configuration file, a setup script automatically runs to guide you through  
the process of initially configuring the GSS. Refer to the Cisco Global Site  
Selector Getting Started Guide for details about using the setup script.  
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Establishing a Serial Console Connection  
Establishing a Serial Console Connection  
Before you configure the GSS, you should establish a serial console connection  
to it. This requires a PC, two DB-9 to RJ-45 adapters (provided), an RJ-45 cable  
(provided), and terminal emulation communication software (Hyper Terminal or  
equivalent). You may also use a serial concentrator connection, if desired.  
To establish a serial console connection:  
1. Connect a console to the serial console port on the rear panel:  
a. Attach a DB-9 to RJ-45 adapter to the serial port of the console.  
b. Attach a DB-9 to RJ-45 adapter to the serial port of the GSS. For the  
location of the serial port, see Figure 3-10.  
c. Use an RJ-45 cable to connect the console to the GSS.  
2. If you have not already done so, power up the GSS as described in the  
“Booting the GSS” section.  
3. Open your terminal emulation application on your PC to access the GSS CLI.  
The following procedure uses HyperTerminal for Windows:  
a. Launch HyperTerminal. The Connection Description window appears.  
b. Enter a name for your session in the Name field.  
c. Click OK. The Connect To window appears.  
d. From the drop-down list, choose the COM port to which the device is  
connected.  
e. Click OK. The Port Properties window appears.  
f. Set the port properties:  
Baud Rate = 9600  
Data Bits = 8  
Flow Control = none  
Parity = none  
Stop Bits = 1  
g. Click OK to connect.  
h. Press Enter to display the CLI prompt.  
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Checking the Front Panel LEDs  
4. Once you create a session, choose Save As from the File menu to save the  
connection description. Saving the connection description has the following  
two advantages:  
The next time you launch HyperTerminal, the session is listed as an  
option under Start > Programs > Accessories > HyperTerminal >  
Name_of_session. This option lets you reach the CLI prompt directly  
without repeating the configuration steps.  
You can connect your cable to a different device without configuring a  
new HyperTerminal session. If you use this option, ensure that you  
connect to the same port on the new device as was configured in the saved  
HyperTerminal session. Otherwise, a blank screen appears without a  
Checking the Front Panel LEDs  
When the GSS is up and running, observe the front panel LEDs to monitor GSS  
operating status. Figure 3-11 shows the location of front panel LEDs, and  
Table 3-2 describes their function.  
Figure 3-11 GSS 4491 Front Panel LEDs  
3
1
2
4
0
1
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Chapter 3 Installing the GSS  
Removing or Replacing a GSS  
Table 3-2 Front Panel LED Indicators  
Indicator  
Color  
State  
Indicates  
1
2
Power Spike  
Blue  
On  
Normal operation  
Blinking A power surge has occurred  
On Ethernet 0 is connected to a network  
Blinking An active link connection on the  
10/100/1000BASE-T interface for Ethernet port 0  
Ethernet 1 is connected to a network  
Blinking An active link connection on the  
10/100/1000BASE-T interface for Ethernet port 1  
Blinking The hard drive is in use  
On The GSS is on  
Blinking The GSS is in standby mode  
Ethernet 0 Link  
Green  
Ethernet 0 Activity Green  
3
Ethernet 1 Link Green  
On  
Ethernet 1 Activity Green  
Hard Drive Activity Green  
4
5
Power  
Green  
Removing or Replacing a GSS  
Warning  
Before working on a GSS, turn OFF the power and unplug the power cord.  
Warning  
Ultimate disposal of this product should be handled according to all national  
laws and regulations.  
Before physically removing or replacing a GSS, use the primary GSSM GUI to  
logically remove the GSS from the network. You may need to logically remove a  
GSS from your network when you:  
Move a GSS device between GSS networks  
Remove or replace a GSS or standby GSSM  
Send the GSS or standby GSSM out for repair or replacement  
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Chapter 3 Installing the GSS  
Removing or Replacing a GSS  
For details about using the primary GSSM GUI to logically remove a GSS device  
or the standby GSSM from the GSS network, refer to Chapter 1, Managing GSS  
Devices from the GUI, in the Cisco Global Site Selector Administration Guide.  
Note  
Do not logically remove the primary GSSM from the GSS network. If you need  
to physically take the primary GSSM offline for either maintenance or repair,  
temporarily switch the roles of the primary and standby GSSMs as outlined in the  
Cisco Global Site Selector Administration Guide.  
To physically remove a GSS from your network:  
1. Power down the GSS by pressing the power button on the front panel of the  
GSS.  
2. Disconnect the power cords and network cables.  
3. Physically remove the chassis from the rack.  
To physically replace a GSS, install the new GSS and configure it using the same  
configuration parameters (such as IP address) that you used for the removed GSS.  
Refer to the Cisco Global Site Selector Getting Started Guide for details.  
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C H A P T E R  
4
Troubleshooting the GSS Hardware  
If your GSS is not working as expected, begin troubleshooting using the  
procedures in this chapter. This chapter guides you through some initial checks  
and procedures that can solve basic GSS problems.  
This chapter contains the following major sections:  
Checking the Basics  
Checking Connections  
Checking the Basics  
To solve some basic GSS problems, follow these steps:  
1. Was an alert message issued by the GSS software?  
Yes. Check the component named in the alert message.  
No. Go to step 2.  
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Chapter 4 Troubleshooting the GSS Hardware  
Checking Connections  
2. Visually inspect the GSS. Is the GSS wet or damaged?  
Yes. Liquid spills, splashes, and excessive humidity can cause damage to  
the GSS. If a GSS gets wet, contact your service representative for  
instructions. Refer to the Preface  
If the GSS was dropped or damaged while being moved, you should  
check it to see if it functions properly. If an external device attached to  
the GSS is dropped or damaged, contact your service representative for  
instructions. Refer to the Preface.  
No. Go to step 3.  
3. Perform the steps in the “Checking Connections” section.  
Is the problem resolved?  
Yes. The power to the GSS was faulty, or the connections were loose. You  
have fixed the problem.  
No. Go to step 4.  
4. Did the GSS complete the boot routine?  
Yes. The GSS configuration information was correct.  
No. Call your service representative. Refer to the Preface.  
Checking Connections  
Loose, incorrect, or improperly connected cables are the most likely source of  
problems for the GSS or other external equipment. A quick check of all the cable  
connections can solve most problems. Refer to Chapter 1, Introduction, for the  
location of the front panel controls and indicators and for the location of back  
panel connections on the GSS.  
To check all the connections:  
1. Power down the GSS. Disconnect all the power cables from their electrical  
outlets.  
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Chapter 4 Troubleshooting the GSS Hardware  
Checking Connections  
2. If the GSS is connected to a power strip or power distribution unit, turn the  
power strip off and then on again.  
Is the power strip receiving power?  
Yes. Go to step 5.  
No. Go to step 3.  
3. Plug the power strip into another electrical outlet.  
Is the power strip receiving power?  
Yes. The original electrical outlet probably does not function. Use a  
different electrical outlet.  
No. Go to step 4.  
4. Connect a GSS that you know works into the electrical outlet.  
Does the GSS receive power?  
Yes. The power strip is probably not functioning properly. Use another  
power strip.  
No. Go to step 5.  
5. Reconnect the GSS to the electrical outlet or power strip.  
Make sure that all connections fit tightly together. Ensure that the Ethernet  
and Console cables are correct for use with the GSS (refer to Chapter 1,  
Introduction).  
6. Power up the GSS.  
Is the problem resolved?  
Yes. The connections were loose. You have fixed the problem.  
No. Call your service representative. Refer to the Preface.  
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Checking Connections  
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C H A P T E R  
5
Maintaining Your GSS  
Proper use of preventive maintenance procedures can keep the GSS in top  
operating condition and minimize the need for time-consuming service  
procedures. This chapter contains maintenance procedures that you should  
perform regularly.  
This chapter includes the following major sections:  
Maintaining Your Site Environment  
Using Power Protection Devices  
Maintaining Your Site Environment  
An exhaust fan in the power supply cools the power supply and GSS by drawing  
air in through various openings and blowing it out the back panel. However, the  
fan may also draws dust and other particles into the GSS, causing contaminant  
buildup, which results in an increase in the GSS’s internal temperature and  
interferes with the operation of various GSS components.  
To avoid these conditions, we recommend keeping your work environment clean  
to reduce the amount of dust and dirt around the GSS, thereby reducing the  
amount of contaminants drawn into it by the power supply fan.  
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Chapter 5 Maintaining Your GSS  
Maintaining Your Site Environment  
This section discusses various environmental factors that can adversely affect  
GSS performance and longevity. It covers:  
Temperature  
Humidity  
Altitude  
Dust and Particles  
Corrosion  
Electrostatic Discharge  
Electromagnetic and Radio Frequency Interference  
Magnetism  
Power Source Interruptions  
Temperature  
Temperature extremes can cause a variety of problems, including premature aging  
and failure of chips or mechanical failure of devices. Extreme temperature  
fluctuations can cause chips to become loose in their sockets and cause expansion  
and contraction of disk drive platters, resulting in read or write data errors.  
To minimize the negative effects of temperature on GSS performance, follow  
these guidelines:  
Ensure that the GSS is operated in an environment no colder than 32°F (0°C)  
or hotter than 104°F (40°C).  
Ensure that the GSS has adequate ventilation. Do not place it within a  
closed-in wall unit or on top of cloth, which can act as insulation. Do not  
place it in direct sunlight. Do not place it next to a heat source of any kind,  
including heating vents during winter.  
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Chapter 5 Maintaining Your GSS  
Maintaining Your Site Environment  
Adequate ventilation is particularly important at high altitudes. GSS performance  
may not be optimum when operating at high temperatures as well as high  
altitudes.  
Ensure that all slots and openings on the GSS remain unobstructed, especially  
the fan vent on the back of the GSS.  
Clean the GSS at regular intervals to avoid any buildup of dust and debris,  
which can cause it to overheat.  
If the GSS has been exposed to abnormally cold temperatures, allow a 2-hour  
warm-up period to bring it up to normal operating temperature before turning  
it on. Failure to do so may cause damage to internal components, particularly  
the hard disk drive.  
Humidity  
High-humidity conditions can cause moisture in the GSS. This moisture can cause  
corrosion of internal components and degradation of properties such as electrical  
resistance, thermal conductivity, physical strength, and size. Extreme moisture  
buildup inside the GSS can result in electrical shorts, which can cause serious  
damage.  
Each GSS is rated to operate at 8 to 80 percent relative humidity, with a humidity  
gradation of 10 percent per hour. Buildings in which climate is controlled by air  
conditioning in the warmer months and by heat during the colder months usually  
maintain an acceptable level of humidity for the GSS. However, if a GSS is  
located in an unusually humid location, use a dehumidifier to maintain the  
humidity within an acceptable range.  
Altitude  
Operating a GSS at high altitude (low pressure) reduces the efficiency of forced  
and convection cooling and can result in electrical problems related to arcing and  
corona effects. This condition can also cause sealed components with internal  
pressure, such as electrolytic capacitors, to fail or perform at reduced efficiency.  
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Chapter 5 Maintaining Your GSS  
Maintaining Your Site Environment  
Dust and Particles  
A clean operating environment can greatly negate the effects of dust and other  
particles, which act as insulators and interfere with the operation of mechanical  
components. Also, in addition to regular cleaning, follow these guidelines to deter  
contamination of the GSS equipment:  
Do not permit smoking anywhere near the GSS  
Do not permit food or drink near the GSS  
Use dust covers when the GSS is not in use  
Close windows and outside doors to keep out airborne particles  
Corrosion  
The oil from a person’s fingers or prolonged exposure to high temperature or  
humidity can corrode the gold-plated edge connectors and pin connectors on  
various devices in the GSS. This corrosion on GSS connectors is a gradual process  
that can eventually lead to intermittent failures of electrical circuits.  
To prevent corrosion, avoid touching contacts on boards and cards. Protecting the  
GSS from corrosive elements is especially important in moist and salty  
environments, which tend to promote corrosion. Also, as a further deterrent to  
corrosion, the GSS should not be used in extreme temperatures, as explained in  
the “Temperature” section.  
Electrostatic Discharge  
Electrostatic discharge (ESD) results from the buildup of static electricity on the  
human body and certain other objects. Static electricity is often produced by  
simple movements such as walking across a carpet. ESD is a discharge of a static  
electrical charge that occurs when a person whose body contains such a charge  
touches a component in the GSS, especially chips, and causes the component to  
fail.  
ESD is a problem particularly in dry environments where the relative humidity is  
below 50 percent.  
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Chapter 5 Maintaining Your GSS  
Maintaining Your Site Environment  
To reduce the effects of ESD, observe the following guidelines:  
Wear a grounding wrist strap. If a grounding wrist strap is unavailable, touch  
an unpainted metal surface on the chassis periodically to neutralize any static  
charge.  
Keep components in their antistatic packaging until they are installed.  
Avoid wearing clothing made of wool or synthetic materials.  
Electromagnetic and Radio Frequency Interference  
Electromagnetic interference (EMI) and radio frequency interference (RFI) can  
adversely affect devices such as radio and television (TV) receivers operating near  
the GSS. Radio frequencies emanating from the GSS can also interfere with  
cordless and low-power telephones. Conversely, RFI from high-power telephones  
can cause spurious characters to appear on a monitor screen.  
RFI is defined as any EMI with a frequency above 10 kHz. This type of  
interference can travel from the GSS to other devices through the power cable and  
power source or through the air like transmitted radio waves. The Federal  
Communications Commission (FCC) publishes specific regulations to limit the  
amount of EMI and RFI emitted by computing equipment. Each GSS meets these  
FCC regulations.  
To reduce the possibility of EMI and RFI, follow these guidelines:  
Operate the GSS only with its cover installed.  
Ensure that the screws on all peripheral cable connectors are securely  
fastened to their corresponding connectors on the back of the GSS.  
Always use shielded cables with metal connector shells for attaching  
peripherals to the GSS.  
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Chapter 5 Maintaining Your GSS  
Maintaining Your Site Environment  
Magnetism  
Because they store data magnetically, hard disk drives are extremely susceptible  
to the effects of magnetism. D not store hard disk drives near magnetic sources  
such as:  
Monitors  
TV sets  
Printers  
Telephones with real bells  
Fluorescent lights  
Power Source Interruptions  
The GSS is especially sensitive to variations in voltage supplied by the AC power  
source. Overvoltage, undervoltage, and transients (or spikes) can erase data from  
memory or even cause components to fail. To protect against these types of  
problems, always properly ground power cables. Use one or both of the following  
methods:  
Use one of the power protection devices described in the “Using Power  
Protection Devices” section.  
Place the GSS on a dedicated power circuit (rather than sharing a circuit with  
other heavy electrical equipment). In general, do not allow the GSS to share  
a circuit with any of the following equipment:  
Copier machines  
Air conditioners  
Vacuum cleaners  
Space heaters  
Power tools  
Teletype machines  
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Chapter 5 Maintaining Your GSS  
Using Power Protection Devices  
Adding machines  
Laser printers  
Facsimile machines  
Any other motorized equipment  
In addition to these appliances, the greatest threats to the GSS power supply are  
surges or blackouts caused by electrical storms. Whenever possible, turn off the  
GSS and any peripherals and unplug them from their power sources  
during thunderstorms.  
If a blackout occurs—even a temporary one—while the GSS is turned on, turn it  
off immediately and disconnect it from the electrical outlet. Leaving the GSS on  
may cause problems when the power is restored; all other appliances left on in the  
area can create large voltage spikes that can damage the GSS.  
Using Power Protection Devices  
A number of devices are available that protect against power problems such as  
power surges, transients, and power failures. The following subsections describe  
some of these devices.  
Surge Protectors  
Surge protectors are available in a variety of types and usually provide a level of  
protection commensurate with the cost of the device. Surge protectors prevent  
voltage spikes, such as those caused during an electrical storm, from entering a  
GSS through the electrical outlet. Surge protectors, however, do not offer  
protection against brownouts, which occur when the voltage drops more than  
20 percent below the normal AC line voltage level.  
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Chapter 5 Maintaining Your GSS  
Using Power Protection Devices  
Line Conditioners  
Line conditioners go beyond the overvoltage protection of surge protectors. Line  
conditioners keep a GSS’s AC power source voltage at a fairly constant level and  
therefore can handle brownouts. Because of this added protection, line  
conditioners cost more than surge protectors—up to several hundred dollars.  
However, these devices cannot protect against a complete loss of power.  
Uninterruptible Power Supplies  
Uninterruptible power supply (UPS) systems offer the most complete protection  
against variations in power because they use battery power to keep the GSS  
running when AC power is lost. The battery is charged by the AC power while it  
is available, so once AC power is lost, the battery can provide power to the GSS  
for a limited amount of time—from 15 minutes to an hour or so—depending on  
the UPS system.  
Surge protectors should be used with all UPS systems, and the UPS system should  
be Underwriters Laboratories (UL) safety-approved.  
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A
A P P E N D I X  
This appendix contains the following sections that list specifications for the Cisco  
GSS 4491:  
Electrical Specifications  
Environmental Specifications  
Physical Specifications  
Port Specifications  
Electrical Specifications  
Table A-1 describes the GSS AC electrical specifications.  
Table A-1 AC Electrical Specifications  
AC Specification  
Input Voltage (V)  
Input Voltage (F)  
Current Draw  
Operational  
100 to 240 VAC  
50 to 60 Hz  
3.5 Amps  
Power Consumption  
Heat Dissipation  
385 Watts  
1314 BTU/hr  
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Appendix A Specifications  
Environmental Specifications  
Environmental Specifications  
Table A-2 describes the GSS environmental specifications.  
Table A-2 Environmental Specifications  
Specification Operational  
Non-operational  
Temperature 10 to 40° C  
-20° to 60° C  
Humidity  
90% at 40° C  
90% at 60° C  
(non-condensing)  
(non-condensing)  
Shock  
31 G sinewave  
71 G sine, 20 G square  
Vibration  
0.25 Grms from 3 to 500 Hz 0.5 Grms from 3 to 200 Hz  
50 dBa (maximum) Not applicable  
Acoustic  
Noise  
Note  
G is the unit of acceleration due to gravity, where 1 G equals 32.17 ft/sec2  
(9.81 m/sec2).  
Grms is the root mean square value of acceleration.  
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Appendix A Specifications  
Physical Specifications  
Physical Specifications  
Table A-3 describes the GSS physical specifications.  
Table A-3 Physical Specifications  
Description  
Specification  
Chassis Dimensions  
(H x W x D)  
1.69 in x 16.50 in x 23.23 in  
(43 mm x 419 mm x 590 mm)  
Chassis Shipping Weight 40.0 lbs. (18.2 kg)  
Chassis Weight  
30.8 lbs. (14 kg)  
Port Specifications  
Table A-4 describes the GSS port specifications.  
Table A-4 Port Specifications  
Description  
Specification  
Ports  
1000BASE-TX, 100BASE-TX,  
10BASE-T (dual) Ethernet ports  
Console port  
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Appendix A Specifications  
Port Specifications  
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B
A P P E N D I X  
Connecting a Modem to the GSS  
Console Port  
This appendix explains how to configure a dial-up modem and connect it to the  
console port on the GSS. Connecting a modem to the GSS allows you to remotely  
perform the same GSS console operations as you would locally. The GSS supports  
the following modems:  
3Com (US Robotics) Courier Model 3453 Modem  
3Com (US Robotics) Sportster Model 5686 Modem  
MultiTech Model MT5634ZBA Modem  
This appendix includes the following sections:  
Configuring a Modem  
Cabling a Modem to the GSS  
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Appendix B Connecting a Modem to the GSS Console Port  
Configuring a Modem  
Configuring a Modem  
You must configure the modem before you can connect it to the GSS. You can  
connect the modem to a terminal or a PC using a terminal emulation program,  
such as Hyperterminal. If you connect the modem to the COM port on a PC, you  
need the following cable and connectors:  
RJ-45-to-RJ-45 rolled cable  
RJ-45-to-DB-25 modem adapter  
DB-9-to-RJ-45 terminal adapter  
Figure B-1 shows the pin number assignments for the 9-pin, male D-shell console  
port connector on the back of the GSS. These pin number assignments conform to  
the industry standard.  
Figure B-1 Console Port Connector Pin Numbers  
1
5
6
9
Table B-1 connector pinouts for the GSS console port.  
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Appendix B Connecting a Modem to the GSS Console Port  
Configuring a Modem  
Table B-1 Console Port Connector Pinouts  
Pin  
Signal  
DCD  
SIN  
I/O  
Definition  
1
I
Data carrier detect  
Serial input  
2
I
3
SOUT  
DTR  
GND  
DSR  
RTS  
CTS  
RI  
O
Serial output  
4
O
Data terminal ready  
Signal ground  
Data set ready  
Request to send  
Clear to send  
5
N/A  
6
I
7
O
8
I
9
I
Ring indicator  
Chassis ground  
Shell  
N/A  
N/A  
You configure the modem by entering commands from the Attention (AT)  
command set and, if applicable, setting the configuration switches on the modem.  
Although the process to configure the modem may vary from one modem to  
another, configure your modem so that its resulting behavior is as follows:  
Answers a call on the first ring  
Disables both hardware and software flow control mechanisms  
Ignores modem control signals DTR and RTS  
Suppresses echoing of command mode input  
Disables recognition of AT commands  
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Appendix B Connecting a Modem to the GSS Console Port  
Cabling a Modem to the GSS  
Cabling a Modem to the GSS  
After you configure the modem, perform the following steps to connect a modem  
to the GSS:  
1. Unplug the flat rolled RJ-45-to-RJ-45 cable from the terminal adapter on the  
PC and connect the cable to the console port on the GSS (Figure B-2).  
Figure B-2 Rear Panel Ports and Connectors  
i
1
2
3
4
1
2
AC power receptacle  
3
4
RJ-45 Ethernet 1 connector with  
10/100/1000-Mbit/s operation  
Console/serial connector  
RJ-45 Ethernet 0 connector with  
10/100/1000-Mbit/s operation  
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Appendix B Connecting a Modem to the GSS Console Port  
Cabling a Modem to the GSS  
2. Ensure that the settings on the remote console match the GSS default settings  
specified in Table B-2.  
Table B-2 Console Port Default Settings  
Parameters  
Baud  
Default Settings  
9600  
Data Bits  
Parity  
8
None  
Stop Bits  
Terminal Type  
Flow Control  
1
VT100/ANSI  
None  
Note  
When you remotely log in to the GSS through a modem, ensure that you log out  
before disconnecting from the session. Use the exec-timeout timeout command to  
set the maximum amount of time that the console session can be idle on the GSS  
before it logs out. By default, the timeout is 150 minutes.  
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Appendix B Connecting a Modem to the GSS Console Port  
Cabling a Modem to the GSS  
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front panel functions 1-3  
general precautions 2-6  
rear panel functions 1-5  
requirements 1-8, 3-15  
A
AC electrical specifications A-1  
AC power 2-10  
connecting to GSS 3-16  
cord, connecting 3-16  
site preparation guidelines 2-11  
troubleshooting connections 4-2  
cautions, description of xvii  
CD-ROM drive 1-3  
line conditioners 5-8  
power source interruptions 5-6  
protection devices 5-7  
receptacle 1-5, 3-15, B-4  
site installation preparation 2-10  
uninterruptible power supplies 5-8  
altitude, guidelines 5-3  
audience xiv  
cleaning operating environment, guidelines 5-4  
CLI  
saving connection session 3-19  
serial console connection, establishing 3-18  
connections  
cables 3-15  
console port to modem B-1  
power 3-16  
B
troubleshooting 4-2  
booting the GSS 4491 3-17  
boot sequence 3-17  
console port  
connections 3-16  
connector pinouts B-2  
description 1-6  
C
establishing connection 3-18  
location 1-5, 3-15  
cabling  
modem, connecting B-1  
operating settings 1-7  
cables, connecting 3-15  
Category 5e cable 1-8, 3-15  
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Index  
pinouts 1-7, B-3  
connector pinout 1-8  
corrosion, preventing damage 5-4  
description 1-8  
Ethernet 0 Activity LED 1-4, 3-20  
Ethernet 0 connector 1-5  
Ethernet 0 Link LED 1-4, 3-20  
Ethernet 1 Activity LED 1-4, 3-20  
Ethernet 1 connector 1-5  
Ethernet 1 Link LED 1-4, 3-20  
Ethernet controller 1-8  
D
damage to product, reporting 3-2  
documentation  
conventions xvii  
related xvi  
specifications A-3  
set xvi  
dust, preventing damage 5-4  
E
four-post rack mount kit  
attaching chassis to rack 3-11  
components 3-5  
electrical specifications A-1  
electricity, safety precautions 2-6  
electromagnetic interference  
See EMI  
installation instructions 3-4  
telescopic rails, attaching 3-6  
front panel  
electrostatic discharge, protecting against 2-7,  
5-4  
features 1-3  
EMI, preventing effects of 5-5  
environment, maintaining 5-1  
environmental  
illustration 1-3  
LED indicators 1-4, 3-19  
overview 1-3  
site requirements 2-9  
specifications A-2  
G
ESD, preventing damage 5-4  
Ethernet interfaces  
GSS 4491  
cabling requirements 1-8, 3-15  
Category 5 UTP cable 3-15  
booting 3-17  
boot sequence 3-17  
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connections 1-5  
hardware  
front panel features 1-3  
general precautions 2-6  
hardware features 1-2  
features 1-2  
troubleshooting 4-1  
humidity guidelines 5-3  
HyperTerminal  
launching 3-18  
saving session 3-19  
installing 3-3  
LED indicators 1-4  
maintaining 5-1  
monitoring LED operating status 3-19  
overview 1-1  
ports and connectors 1-6  
power button 1-3  
installation  
rear panel features 1-5  
removing from network 3-21  
removing or replacing 3-20  
reporting damage 3-2  
choosing a site 2-9  
creating a safe environment 2-10  
general precautions 2-6  
installing in a rack 3-4  
network, setting up 2-12  
precautions for rack-mounting 2-11  
preparing for  
safety warnings and cautions 2-2  
shipment contents 3-2  
site environment, maintaining 5-1  
site requirements 2-8  
LAN options, precautions for 2-12  
modems, precautions for 2-12  
technical specifications A-1  
troubleshooting hardware issues 4-1  
unpacking and inspecting 3-2  
workbench or tabletop, installing 3-14  
telecommunications, precautions for 2-12  
required tools and equipment 2-12  
site preparation 2-8  
site requirements 2-8  
tabletop 3-14  
H
tools and equipment required 2-12  
two-post rack bracket instructions 3-12  
unpacking and inspecting 3-2  
workbench 3-14  
hard drive  
indicator 1-4, 3-20  
magnetism effects 5-6  
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Index  
L
LAN  
options, precautions for 2-12  
physically removing a GSS 4491 from a  
network 3-21  
physical specifications A-3  
port connectors 1-6  
precautions 2-12  
LED indicators  
port specifications A-3  
power  
Ethernet 0 Activity 1-4, 3-20  
Ethernet 0 Link 1-4, 3-20  
Ethernet 1 Activity 1-4, 3-20  
Ethernet 1 Link 1-4, 3-20  
front panel 3-19  
AC power receptacle 1-5  
connecting to system 3-16  
power indicator LED 1-4, 3-20  
power source interruptions, preventing  
hard drive activity 1-4, 3-20  
monitoring GSS operating status 3-19  
power 1-4, 3-20  
damage 5-6  
power spike indicator LED 1-4, 3-20  
power button 1-3  
power spike 1-4, 3-20  
power protection devices 5-7  
power source interruptions 5-6  
power supplies, using uninterruptible 5-8  
line conditioners, using 5-8  
M
R
magnetism, preventing effects of 5-6  
modem  
rack mounting  
connecting to console port B-1  
precautions 2-12  
four-post rack 3-4  
button 1-3, 1-5  
installation considerations 3-4  
precautions 2-11  
N
network, physically removing a GSS 4491 3-21  
procedure 3-4  
two-post rack bracket 3-12  
radio frequency interference. See RFI  
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rear panel  
overview 1-2  
site  
connections 1-5  
features 1-5  
environment, maintenance factors 5-1  
preparation 2-8  
RFI, preventing effects of 5-5  
requirements 2-8  
specifications  
S
electrical A-1  
environmental A-2  
GSS 4491 A-1  
safety  
creating a safe environment 2-10  
electrostatic discharge 2-7  
general precautions 2-6  
important safety instructions 2-3  
installation 2-2  
physical A-3  
port A-3  
surge protectors, using 5-7  
System ID button, identifying GSS 4491  
by 1-3, 1-5  
precautions with electricity 2-6  
preventing EMI 2-8  
safe environment, creating 2-10  
warnings xviii  
tabletop installation procedure 3-14  
telecommunications, precautions 2-12  
temperature guidelines 5-2  
troubleshooting  
warnings and cautions 2-2  
with electricity 2-6  
serial port  
connection 3-18  
basic checks 4-1  
description 1-6  
connections 4-2  
location 1-5, 3-15, B-4  
pinouts 1-7, B-3  
switches 4-2  
troubleshooting system hardware 4-1  
two-post rack bracket, attaching 3-12  
server load balancers  
Cisco Content Services Switch 1-1  
Cisco Content Switching Module (Catalyst  
6500 series) 1-1  
Cisco IOS SLB 1-1  
Cisco LocalDirector 1-1  
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Index  
U
uninterruptible power supplies, using 5-8  
W
warnings  
regarding  
batteries and explosion danger 2-5  
chassis, opening 2-3  
chassis, working on 2-3  
disposal of unit 2-5  
explosion 2-5  
faceplates and cover panels, removing 2-4  
failure to ground equipment 2-4  
ground conductor, defeating 2-3, 2-10  
installation area 2-9  
instructions, reading 2-5  
jewelry 2-4  
lightning activity 2-4, 3-15  
On/Off switch 2-5  
power cords, more than one 2-4  
rack-mounting equipment 2-11  
safety cover 2-3  
short circuits 2-4, 2-10  
translations of 2-2  
workbench installation procedure 3-14  
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IN-6  

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