Cisco | 3750-48TS - Catalyst Switch - Stackable | Installation guide | Cisco 3750-48TS - Catalyst Switch - Stackable Installation guide

Catalyst 3750 Switch
Hardware Installation Guide
November 2004
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
Text Part Number: OL-6336-01
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)
Catalyst 3750 Switch Hardware Installation Guide
Copyright © 2004 Cisco Systems, Inc. All rights reserved.
C O N T E N T S
Cisco Limited Lifetime Hardware Warranty Terms xi
Preface xv
Audience xv
Purpose xv
Conventions xvi
Related Publications xxiv
Obtaining Documentation xxv
Cisco.com xxv
Ordering Documentation xxv
Documentation Feedback xxvi
Obtaining Technical Assistance xxvi
Cisco TAC Website xxvi
Opening a TAC Case xxvii
TAC Case Priority Definitions xxvii
Obtaining Additional Publications and Information xxviii
CHAPTER
1
Product Overview 1-1
Features 1-1
Front Panel Description 1-4
10/100 and 10/100/1000 Ports 1-11
SFP Module Slots 1-14
SFP Modules 1-15
XENPAK Module Slot 1-15
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LEDs 1-15
System LED 1-18
RPS LED 1-18
Master LED 1-19
Port LEDs and Modes 1-19
Rear Panel Description 1-25
StackWise Ports 1-27
Power Connectors 1-28
Internal Power Supply Connector 1-28
Cisco RPS Connector 1-28
Console Port 1-29
Management Options 1-29
Network Configurations 1-30
CHAPTER
2
Switch Installation 2-1
Preparing for Installation 2-2
Warnings 2-2
Installation Guidelines 2-6
Verifying Package Contents 2-8
Verifying Switch Operation 2-9
Powering On the Switch and Running POST 2-9
Powering Off the Switch 2-10
Planning the Stack 2-11
Planning Considerations 2-11
Powering Considerations 2-12
Cabling Considerations 2-12
Recommended Cabling Configurations 2-14
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Installing the Switch 2-16
Rack-Mounting 2-16
Removing Screws from the Switch 2-17
Attaching Brackets to the Catalyst 3750G-24TS Switch 2-19
Attaching Brackets to the Catalyst 3750-24TS, 3750G-24TS-1U,
3750G-24T, 3750G-12S, 3750-24PS, 3750G-24PS, 3750-48PS,
3750G-48PS, 3750G-16TD, 3750-48TS, and 3750G-48TS Switches 2-24
Mounting the Switch in a Rack 2-27
Attaching the Cable Guide 2-29
Wall-Mounting 2-31
Attaching the Brackets to the Switch for Wall-Mounting 2-31
Attaching the RPS Connector Cover 2-32
Mounting the Switch on a Wall 2-32
Table- or Shelf-Mounting 2-34
Connecting StackWise Cable to StackWise Ports 2-35
Installing and Removing SFP Modules 2-38
Installing SFP Modules into SFP Module Slots 2-39
Removing SFP Modules from SFP Module Slots 2-41
Installing and Removing XENPAK Modules 2-42
Installing a XENPAK Module 2-43
Removing a XENPAK Module 2-46
Connecting to the 10/100 and 10/100/1000 Ports 2-48
Connecting to an SFP Module 2-52
Connecting to a Fiber-Optic SFP Module 2-53
Connecting to 1000BASE-T SFP Modules 2-55
Connecting to a XENPAK Module 2-56
Where to Go Next 2-59
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CHAPTER
Troubleshooting 3-1
3
Understanding POST Results 3-1
Diagnosing Problems 3-3
Replacing a Failed Stack Member 3-8
APPENDIX
A
Technical Specifications A-1
APPENDIX
B
Connector and Cable Specifications B-1
Connector Specifications B-1
10/100 and 10/100 /1000 Ports B-2
SFP Module Ports B-3
XENPAK Module Ports B-4
Console Port B-4
Cable and Adapter Specifications B-5
Two Twisted-Pair Cable Pinouts B-5
Four Twisted-Pair Cable Pinouts for 10/100 Ports B-6
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports B-7
Crossover Cable and Adapter Pinouts B-8
Identifying a Crossover Cable B-8
Adapter Pinouts B-9
APPENDIX
C
Configuring the Switch with the CLI-Based Setup Program C-1
Accessing the CLI C-2
Accessing the CLI Through Express Setup C-2
Accessing the CLI Through the Console Port C-3
Taking Out What You Need C-4
Stacking the Switches (Optional) C-5
Connecting to the Console Port C-7
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Starting the Terminal Emulation Software C-9
Connecting to a Power Source C-9
Entering the Initial Configuration Information C-11
IP Settings C-11
Completing the Setup Program C-11
INDEX
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Cisco Limited Lifetime Hardware
Warranty Terms
There are special terms applicable to your hardware warranty and various services
that you can use during the warranty period. Your formal Warranty Statement,
including the warranty applicable to Cisco software, is included on the Cisco
Documentation CD and on Cisco.com. Follow these steps to access and download
the Cisco Information Packet and your warranty document from the CD or
Cisco.com.
1.
Launch your browser, and go to this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm
The Warranties and License Agreements page appears.
2.
To read the Cisco Information Packet, follow these steps:
a. Click the Information Packet Number field, and make sure that the part
number 78-5235-02F0 is highlighted.
b. Select the language in which you would like to read the document.
c. Click Go.
The Cisco Limited Warranty and Software License page from the
Information Packet appears.
d. Read the document online, or click the PDF icon to download and print
the document in Adobe Portable Document Format (PDF).
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Cisco Limited Lifetime Hardware Warranty Terms
Note
3.
You must have Adobe Acrobat Reader to view and print PDF
files. You can download the reader from Adobe’s website:
http://www.adobe.com
To read translated and localized warranty information about your product,
follow these steps:
a. Enter this part number in the Warranty Document Number field:
78-6310-02C0
b. Select the language in which you would like to view the document.
c. Click Go.
The Cisco warranty page appears.
d. Read the document online, or click the PDF icon to download and print
the document in Adobe Portable Document Format (PDF).
You can also contact the Cisco service and support website for assistance:
http://www.cisco.com/public/Support_root.shtml.
Duration of Hardware Warranty
A Cisco product hardware warranty is supported for as long as the original end
user continues to own or use the product, provided that the fan and power supply
warranty is limited to five (5) years. In the event of a discontinuance of product
manufacture, the Cisco warranty support is limited to five (5) years from the
announcement of the discontinuance.
Replacement, Repair, or Refund Policy for Hardware
Cisco or its service center will use commercially reasonable efforts to ship a
replacement part within ten (10) working days after receipt of the Return
Materials Authorization (RMA) request. Actual delivery times can vary,
depending on the customer location.
Cisco reserves the right to refund the purchase price as its exclusive warranty
remedy.
To Receive a Return Materials Authorization (RMA) Number
Contact the company from whom you purchased the product. If you purchased the
product directly from Cisco, contact your Cisco Sales and Service Representative.
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Complete the information below, and keep it for reference.
Company product purchased from
Company telephone number
Product model number
Product serial number
Maintenance contract number
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Preface
Audience
This guide is for the networking or computer technician responsible for installing
the Catalyst 3750 switches. We assume that you are familiar with the concepts and
terminology of Ethernet and local area networking.
Purpose
This guide documents the hardware features of the Catalyst 3750 family of
switches. It describes the physical and performance characteristics of each switch,
explains how to install a switch, and provides troubleshooting information.
This guide does not describe system messages that you might receive or how to
configure your switch. For more information, see the switch software
configuration guide, the switch command reference, and the switch system
message guide on the Cisco.com Product Documentation home page. For
information about the standard Cisco IOS Release 12.1 or 12.2 commands, see the
Cisco IOS documentation set from the Cisco.com home page at Service and
Support > Technical Documents. On the Cisco Product Documentation home
page, select Release 12.1 or 12.2 from the Cisco IOS Software drop-down list.
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Conventions
Conventions
This document uses these conventions and symbols for notes, cautions, and
warnings:
Note
Caution
Warning
Means reader take note. Notes contain helpful suggestions or references to
materials not contained in this manual.
Means reader be careful. In this situation, you might do something that could
result in equipment damage or loss of data.
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
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Conventions
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
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
Warnung
WICHTIGE SICHERHEITSHINWEISE
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.
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Conventions
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.
Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per
individuare le traduzioni delle avvertenze riportate in questo documento.
CONSERVARE QUESTE ISTRUZIONI
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
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¡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
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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Related Publications
Related Publications
You can order printed copies of documents with a DOC-xxxxxx= number. For
more information, see the “Obtaining Documentation” section on page xxv.
These documents provide complete information about the switch and are available
from this Cisco.com site:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/index.htm
Note
•
Catalyst 3750 Switch Getting Started Guide (order number DOC-7816663=)
•
Regulatory Compliance and Safety Information for the Catalyst 3750 Switch
(order number DOC-7816664=)
•
Release Notes for the Catalyst 3750 Switch (not orderable but available on
Cisco.com)
Before installing, configuring, or upgrading the switch, see the release notes on
Cisco.com for the latest information.
•
Catalyst 3750 Switch Software Configuration Guide (order number
DOC-7815164=)
•
Catalyst 3750 Switch Command Reference (order number DOC-7815165=)
•
Catalyst 3750 Switch System Message Guide (order number DOC-7815166=)
•
Device manager online help (available on the switch)
•
Getting Started with Cisco Network Assistant (not orderable but available on
Cisco.com)
•
Catalyst 3750 Switch Hardware Installation Guide (order number
DOC-7815136=)
•
Cisco Small Form-Factor Pluggable Modules Installation Notes (order
number DOC-7815160=)
•
Cisco Small Form-Factor Pluggable Modules Compatibility Matrix (not
orderable but available on Cisco.com)
•
Compatibility Matrix for 1000BASE-T Small Form-Factor Pluggable
Modules (not orderable but available on Cisco.com)
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Obtaining Documentation
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 on the World Wide Web at
this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
International Cisco websites can be accessed from 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
You can order Cisco documentation in these ways:
•
Registered Cisco.com users (Cisco direct customers) can order Cisco product
documentation from the Ordering tool:
http://www.cisco.com/en/US/partner/ordering/index.shtml
•
Nonregistered Cisco.com users can order documentation through a local
account representative by calling Cisco Systems Corporate Headquarters
(California, USA) at 408 526-7208 or, elsewhere in North America, by
calling 800 553-NETS (6387).
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Preface
Documentation Feedback
Documentation Feedback
You can submit e-mail 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, the Cisco Technical Assistance Center (TAC) provides
24-hour-a-day, award-winning technical support services, online and over the
phone. Cisco.com features the Cisco TAC website as an online starting point for
technical assistance. If you do not hold a valid Cisco service contract, please
contact your reseller.
Cisco TAC Website
The Cisco TAC website provides online documents and tools for troubleshooting
and resolving technical issues with Cisco products and technologies. The Cisco
TAC website is available 24 hours a day, 365 days a year. The Cisco TAC website
is located at this URL:
http://www.cisco.com/tac
Accessing all the tools on the Cisco TAC website requires a Cisco.com user ID
and password. If you have a valid service contract but do not have a login ID or
password, register at this URL:
http://tools.cisco.com/RPF/register/register.do
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Obtaining Technical Assistance
Opening a TAC Case
Using the online TAC Case Open Tool is the fastest way to open P3 and P4 cases.
(P3 and P4 cases are those in which your network is minimally impaired or for
which you require product information.) After you describe your situation, the
TAC Case Open Tool automatically recommends resources for an immediate
solution. If your issue is not resolved using the recommended resources, your case
will be assigned to a Cisco TAC engineer. The online TAC Case Open Tool is
located at this URL:
http://www.cisco.com/tac/caseopen
For P1 or P2 cases (P1 and P2 cases are those in which your production network
is down or severely degraded) or if you do not have Internet access, contact Cisco
TAC by telephone. Cisco TAC engineers are assigned immediately to P1 and P2
cases to help keep your business operations running smoothly.
To open a case 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 listing of Cisco TAC contacts, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
TAC Case Priority Definitions
To ensure that all cases are reported in a standard format, Cisco has established
case priority definitions.
Priority 1 (P1)—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.
Priority 2 (P2)—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.
Priority 3 (P3)—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.
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Obtaining Additional Publications and Information
Priority 4 (P4)—You require information or assistance with Cisco product
capabilities, installation, or configuration. There is little or no effect on your
business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is
available from various online and printed sources.
•
Cisco Marketplace provides a variety of Cisco books, reference guides, and
logo merchandise. Go to this URL to visit the company store:
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 online at this URL:
http://www.ciscopress.com
•
Packet magazine is the Cisco quarterly publication that provides the latest
networking trends, technology breakthroughs, and Cisco products and
solutions to help industry professionals get the most from their networking
investment. Included are networking deployment and troubleshooting tips,
configuration examples, customer case studies, tutorials and training,
certification information, and links to numerous in-depth online resources.
You can access Packet magazine at this URL:
http://www.cisco.com/packet
•
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information about Internet business strategies for executives. You can access
iQ Magazine at this URL:
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Obtaining Additional Publications and Information
•
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:
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•
Training—Cisco offers world-class networking training. Current offerings in
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Catalyst 3750 Switch Hardware Installation Guide
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Obtaining Additional Publications and Information
Catalyst 3750 Switch Hardware Installation Guide
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C H A P T E R
1
Product Overview
The Catalyst 3750 family of switches—also referred to as the switches—are
stackable Ethernet switches to which you can connect devices like Cisco IP
Phones, Cisco Wireless Access Points workstations, and other network devices
such as servers, routers, and other switches. This chapter provides a functional
overview of the Catalyst 3750 switch models. These topics are included:
•
Features, page 1-1
•
Front Panel Description, page 1-4
•
Rear Panel Description, page 1-25
•
Management Options, page 1-29
Features
The switches can be deployed as backbone switches, aggregating 10BASE-T,
100BASE-TX, and 1000BASE-T Ethernet traffic from other network devices. See
the switch software configuration guide for examples showing how you might
deploy the switches in your network.
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Features
Figure 1-1 through Figure 1-12 show the Catalyst 3750 switches.
These are the switch features:
•
Fast Ethernet Configurations
– Catalyst 3750-24TS switch—24 10/100 Ethernet ports and 2 small
form-factor pluggable (SFP) module slots
– Catalyst 3750-48TS switch—48 10/100 Ethernet ports and 4 SFP module
slots
– Catalyst 3750-24PS switch—24 10/100 Power over Ethernet (PoE) ports
and 2 SFP module slots
– Catalyst 3750-48PS switch—48 10/100 PoE ports and 4 SFP module
slots
•
Gigabit Ethernet Configurations
– Catalyst 3750G-24T switch—24 10/100/1000 Ethernet ports
– Catalyst 3750G-24TS switch—1.5 rack units (RU)—24 10/100/1000
Ethernet ports and 4 SFP module slots
– Catalyst 3750G-24TS-1U switch—1 RU—24 10/100/1000 Ethernet
ports and 4 SFP module slots
– Catalyst 3750G-48TS switch—48 10/100/1000 Ethernet ports and 4 SFP
module slots
– Catalyst 3750G-12S switch—12 SFP module slots
– Catalyst 3750G-24PS switch—24 10/100/1000 PoE ports and 4 SFP
module slots
– Catalyst 3750G-48PS switch—48 10/100/1000 PoE ports and 4 SFP
module slots
•
10-Gigabit Ethernet Configuration
– Catalyst 3750G-16TD switch—16 10/100/1000 Ethernet ports and 1
10-Gigabit Ethernet XENPAK module slot
Note
The 10-Gigabit Ethernet XENPAK modules are referred to as
10-Gigabit Ethernet module ports in the software documentation.
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Features
•
The switches support these SFP modules:
– 1000BASE-SX
– 1000BASE-LX
– 1000BASE-ZX
– 100BASE-FX
– 1000BASE-T
– CWDM
Note
When installed in Catalyst 3750 switches, 1000BASE-T SFP modules can
either operate at 10, 100, or 1000 Mbps in full-duplex mode or in
half-duplex mode at 10 or 100 Mbps.
•
For a list of the XENPAK modules that the Catalyst 3750G-16TD switch
supports, see the Catalyst 3750 release notes.
•
Configuration
– For 10/100 ports, autonegotiates the speed and duplex settings
– For 10/100/1000 ports, autonegotiates the speed and supports only
full-duplex mode
Note
You can configure duplex mode to half, full, or autonegotiate on
Gigabit Ethernet interfaces if the speed is set to 10 or 100 Mbps. You
cannot configure half-duplex mode on Gigabit Ethernet interfaces if
the interface speed is 1000 Mbps.
•
The Catalyst 3750 switches support stacking. You can stack up to nine
switches in a stack by cabling the StackWise ports. StackWise ports are not
user-configurable.
•
Switches are hot-swappable
•
Power redundancy
– Connection for optional Cisco RPS 675 redundant power system that
operates on AC input and supplies backup DC power output to the family
of Catalyst 3750 switches.
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Front Panel Description
Front Panel Description
The Catalyst 3750-24TS 10/100 ports are numbered 1 through 24. The ports are
grouped in pairs. The first member of the pair (port 1) is above the second member
(port 2), as shown in Figure 1-1. Port 3 is above port 4, and so on. The SFP
module slots are numbered 1 (left) and 2 (right).
Catalyst 3750-24TS Front Panel
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
86541
Figure 1-1
12
11X
13
13X
14
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16
17
18
19
20
2X
21
22
23
Catalyst
3750 SERIE
24
S
23X
12X
14X
1
24X
2
1
2
1
10/100 ports
2
SFP module slots
The 10/100/1000 ports on the Catalyst 3750G-24T, 3750G-24TS, and
3750G-24TS-1U switches are grouped in pairs. The first member of the pair
(port 1) is above the second member (port 2), as shown in Figure 1-2, Figure 1-3,
and Figure 1-4. Port 3 is above port 4, and so on. In Figure 1-3 and Figure 1-4, the
SFP module slots are numbered 25 to 28.
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SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
Catalyst 3750G-24T Front Panel
1
2
3
4
1X
5
6
7
8
9
10
11
86543
Figure 1-2
12
MODE
11X
13
14
15
16
13X
2X
17
18
19
20
21
22
23
24
Catalyst
3750 SERIE
23X
12X
S
14X
24X
1
1
10/100/1000 ports
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
Catalyst 3750G-24TS FrontPanel
1
1X
2
3
4
5
6
7
8
9
10
11
12
MODE
11X
13
13X
2X
14
15
16
17
18
Catalyst
3750 SERIE
19
20
21
22
23
S
86544
Figure 1-3
24
23X
12X
25
14X
26
27
28
24X
1
2
1
10/100/1000 ports
2
SFP module slots
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Front Panel Description
Catalyst 3750G-24TS-1U Front Panel
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
2
1X
MODE
3
4
5
6
7
8
9
10
11
12
13
11X
14
15
16
13X
17
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20
21
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23
2X
Catalys
t 3750 SERIE
24
S
119768
Figure 1-4
23X
25
12X
27
14X
24X
26
28
1
2
1
10/100/1000 ports
2
SFP module slots
The Catalyst 3750G-12S SFP module slots are numbered 1 through 12. The slots
are grouped in three sets of four, as shown in Figure 1-5.
Figure 1-5
Catalyst 3750G-12S Front Panel
97166
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
MODE
1
2
3
4
5
Catalyst
3750 SERIE
6
7
8
S
9
10
11
12
1
1
SFP module slots
The Catalyst 3750-48TS 10/100 ports are numbered 1 through 48. The ports are
grouped in pairs. The first member of the pair (port 1) is above the second member
(port 2), as shown in Figure 1-6. Port 3 is above port 4, and so on. The SFP
module slots are numbered 1 to 4.
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1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
2
3
4
5
1X
6
7
Catalyst 3750-48TS Front Panel
8
9
10
11
12
13
14
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16
17
18
19
20
15X 17X
21
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23
24
25
26
2X
MODE
27
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30
31
86542
Figure 1-6
32
33
34
35
36
37
31X 33X
38
39
40
41
42
16X 18X
43
44
45
46
47
Catalyst
3750 SERIE
48
S
47X
32X 34X
1
3
2
48X
4
1
2
1
2
10/100 ports
SFP module slots
The Catalyst 3750G-48TS 10/100/1000 ports are numbered 1 through 48. The
ports are grouped in pairs. The first member of the pair (port 1) is above the
second member (port 2), as shown in Figure 1-7. Port 3 is above port 4, and so on.
The SFP module slots are numbered 49 to 52.
Figure 1-7
MODE
1X
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
15X 17X
18
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2X
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31X 33X
16X 18X
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47
Catalys
t 3750G
48
SERIES
47X
32X 34X
49
51
48X
50
52
119770
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
Catalyst 3750G-48TS Front Panel
1
2
1
10/100/1000 ports
2
SFP module slots
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Front Panel Description
The 10/100 PoE ports on the Catalyst 3750-24PS switch are grouped in pairs. The
first member of the pair (port 1) is above the second member (port 2), as shown
in Figure 1-8. Port 3 is above port 4, and so on. The SFP module slots are
numbered 1 and 2.
Figure 1-8
Catalyst 3750-24PS Switch Front Panel
SYST
RPS
STAT
DUPLX
SPEED
PoE
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
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13
11X
13X
2X
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23
Catalyst
24
3750 SERIES
14X
24X
1
2
104577
23X
12X
1
2
1
10/100 PoE ports 2
SFP module slots
The 10/100/1000 PoE ports on the Catalyst 3750G-24PS switch are grouped in
pairs. The first member of the pair (port 1) is above the second member (port 2),
as shown in Figure 1-9. Port 3 is above port 4, and so on. The SFP module slots
are numbered 25 to 28.
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Front Panel Description
Catalyst 3750G-24PS Switch Front Panel
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
PoE
1
2
3
4
1X
MODE
5
6
7
8
9
10
11
12
13
11X
14
15
13X
16
17
18
19
20
21
22
23
2X
Catalyst 3750
24
G SERIES PoE-
24
119769
Figure 1-9
23X
25
12X
27
14X
24X
26
28
1
2
1
2
10/100/1000 PoE ports
SFP module slots
The 10/100 PoE ports on the Catalyst 3750-48PS switch are grouped in pairs. The
first member of the pair (port 1) is above the second member (port 2), as shown
in Figure 1-10. Port 3 is above port 4, and so on. The SFP module slots are
numbered 1 to 4.
Figure 1-10
2
3
4
5
6
7
8
9
10
STAT
DUPLX
SPEED
PoE
MODE
11
12
13
14
15
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15X 17X
2X
18
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31X 33X
16X 18X
34
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45
46
47
Catalyst
48
3750 SERIES
47X
32X 34X
1
3
48X
2
4
104576
1
1X
SYST
RPS
Catalyst 3750-48PS Switch Front Panel
1
2
1
10/100 PoE ports 2
SFP module slots
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Front Panel Description
The 10/100/1000 PoE ports on the Catalyst 3750G-48PS switch are grouped in
pairs. The first member of the pair (port 1) is above the second member (port 2),
as shown in Figure 1-11. Port 3 is above port 4, and so on. The SFP module slots
are numbered 49 to 52.
Figure 1-11
MODE
1X
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
15X 17X
2X
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31X 33X
16X 18X
34
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37
38
39
40
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42
43
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45
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47
Catalyst 3750
48
G SERIES PoE-
48
47X
32X 34X
49
51
48X
50
52
119771
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
PoE
Catalyst 3750G-48PS Switch Front Panel
1
2
1
10/100/1000 PoE ports
2
SFP module slots
The 10/100/1000 ports on the Catalyst 3750G-16TD switch are grouped in pairs.
The first member of the pair (port 1) is above the second member (port 2), as
shown in Figure 1-12. Port 3 is above port 4, and so on. The XENPAK module
slot is numbered 1.
Note
The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet
module ports in the software documentation.
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Front Panel Description
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
Catalyst 3750G-16TD Switch Front Panel
1
1X
2
3
4
5
6
7
8
9
10
11
12
13
14
15
104572
Figure 1-12
16
MODE
15X
2X
Catalyst 3750
16X
series
1
TX
RX
1
2
1
10/100/1000 ports
2
XENPAK module slot
10/100 and 10/100/1000 Ports
You can set the 10/100 ports on the Catalyst 3750 switches to operate in any
combination of half duplex, full duplex, 10 Mbps, or 100 Mbps. You can set the
10/100/1000 ports to operate in 10 or 100 Mbps in half or full duplex, or in
1000 Mbps in full duplex.
You can set both the 10/100 and the 10/100/1000 ports for speed and duplex
autonegotiation, in compliance with IEEE 802.3AB. (The default setting is
autonegotiate.)
Note
You can configure duplex mode to half, full, or autonegotiate on Gigabit Ethernet
interfaces if the speed is set to 10 or 100 Mbps. You cannot configure half-duplex
mode on Gigabit Ethernet interfaces if the interface speed is 1000 Mbps.
When set for autonegotiation, the port senses the speed and duplex settings of the
attached device and advertises its own capabilities. If the connected device also
supports autonegotiation, the switch port negotiates the best connection (the
fastest line speed that both devices support and full-duplex transmission if the
attached device supports it) and configures itself accordingly. In all cases, the
attached device must be within 328 feet (100 meters).
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Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE)
circuits if interconnections are made using uninsulated exposed metal
contacts, conductors, or terminals. Avoid using such interconnection methods,
unless the exposed metal parts are located within a restricted access location
and users and service people who are authorized within the restricted access
location are made aware of the hazard. A restricted access area can be
accessed only through the use of a special tool, lock and key or other means of
security. Statement 1072
The10/100 ports on the Catalyst 3750-24PS and 3750-48PS switches and the
10/100/1000 ports on the Catalyst 3750G-24PS and 3750G-48PS switches
provide PoE support for devices compliant with IEEE 802.3af and also provide
Cisco pre-standard PoE support for Cisco IP Phones and Cisco Aironet Access
Points.
Each of the Catalyst 3750G-24PS switch 10/100 ports or the
Catalyst 3750G-24PS switch 10/100/1000 ports can deliver up to 15.4 W of PoE.
On the Catalyst 3750-48PS or 3750G-48PS switches, any 24 of the 48 10/100 or
10/100/1000 ports can deliver 15.4 W of PoE, or any combination of the ports can
deliver an average of 7.7 W of PoE at the same time, up to a maximum switch
power output of 370 W.
On a per-port basis, you can control whether or not a Catalyst 3750 PoE port
automatically provides power when an IP phone or an access point is connected.
The device manager and the CLI provide two PoE settings for each 10/100 or
10/100/1000 PoE port: Auto and Never.
When you select the Auto setting, the port provides power only if a valid powered
device, such as an IEEE 802.3af-compliant powered device, a Cisco pre-standard
IP phone, or a Cisco pre-standard Cisco access point, is connected to it. The Auto
setting is the default. However, when you select the Never setting, the port does
not provide power even if a Cisco IP phone or an access point is connected to it.
For information about configuring and monitoring PoE ports, see the device
manager online help and the switch software configuration guide.
Cisco enhanced power negotiation allows some powered devices, such as the
Cisco 7970G IP Phone, to operate in high-power mode on Catalyst 3750 PoE
switches. The powered device and the switch negotiate through power-negotiation
Cisco Discovery Protocol (CDP) messages for an agreed-upon
power-consumption level. The negotiation allows a high-power Cisco powered
device that consumes more than 7 W to operate at its highest power mode. The
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Front Panel Description
powered device first boots up in low-power mode, consumes less than 7 W, and
negotiates to obtain enough power to operate in high-power mode. The device
changes to high-power mode only when it receives confirmation from the switch.
High-power devices can operate in low-power mode on switches that do not
support power-negotiation CDP.
For information about configuring and monitoring PoE ports, see the device
manager online help and the switch software configuration guide.
Note
You also can connect a Cisco IP Phone or Cisco Aironet Access Point to a Catalyst
3750 PoE switch 10/100 or 10/100/1000 port and to an AC power source for
redundant power. The powered device might switch to the AC power source as its
primary power source upon being connected to it. In that case, the PoE port
becomes the backup power source for the powered device.
If the primary source fails, the second power source becomes the primary power
source to the powered device. During the power transfer, an IP Phone might
reboot or reestablish link with the switch.
For information about Cisco IP Phones and Cisco Aironet Access Points, see the
documentation that came with your IP phone or access point.
Note
100BASE-TX and 1000BASE-T traffic requires Category 5 cable. 10BASE-T
traffic can use Category 3 or Category 4 cables.
When connecting the switch to workstations, servers, routers, and Cisco IP
Phones, be sure that the cable is a straight-through cable. When connecting the
switch to switches or hubs, use a crossover cable. When using a straight-through
or crossover cable for 1000BASE-T connections, be sure to use a twisted
four-pair, Category 5 cable for proper operation. Pinouts for the cables are
described in Appendix B, “Connector and Cable Specifications.”
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Front Panel Description
Note
You can use the mdix auto interface configuration command in the CLI to enable
the automatic medium-dependent interface crossover (Auto-MDIX) feature.
When the Auto-MDIX feature is enabled, the switch detects the required cable
type for copper Ethernet connections and configures the interfaces accordingly.
Therefore, you can use either a crossover or a straight-through cable for
connections to a copper 10/100, 10/100/1000, or 1000BASE-T SFP module port
on the switch, regardless of the type of device on the other end of the connection.
The Auto-MDIX feature is enabled by default on switches running Cisco IOS
Release 12.2(18)SE or later. For releases between Cisco IOS
Release 12.1(14)EA1 and 12.2(18)SE, the Auto-MDIX feature is disabled by
default. For configuration information for this feature, see the switch software
configuration guide or the switch command reference.
Note
Many legacy powered devices, including older Cisco IP phones and access points
that do not fully support IEEE 802.3af, might not support PoE when connected to
the switches by a crossover cable.
SFP Module Slots
Catalyst 3750 switches with SFP module slots support these SFP modules:
•
1000BASE-SX
•
1000BASE-LX
•
1000BASE-ZX
•
100BASE-FX
•
1000BASE-T
•
CWDM
For a list of the SFP modules that the switches support, see the Catalyst 3750
release notes.
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SFP Modules
The Catalyst 3750 switch uses Gigabit Ethernet SFP modules to establish
connections to other devices. These transceiver modules are field-replaceable,
providing the uplink interfaces when inserted in an SFP module slot. You can use
the SFP modules for Gigabit uplink connections to other switches. You use
fiber-optic cables with LC or MT-RJ connectors to connect to a fiber-optic SFP
module. You use Category 5 cable with RJ-45 connectors to connect to a copper
SFP module.
For more information about these SFP modules, see your SFP module
documentation.
XENPAK Module Slot
The Catalyst 3750G-16TD switch uses 10-Gigabit Ethernet XENPAK modules to
establish connections to networks. The modules are installed in the module slot in
the switch front panel.
For a list of the XENPAK modules that the Catalyst 3750G-16TD switch
supports, see the Catalyst 3750 release notes. For more information about
XENPAK modules, see your XENPAK module documentation.
Note
The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet
module ports in the software documentation.
LEDs
You can use the switch LEDs to monitor switch activity and its performance.
Figure 1-13 shows the Catalyst 3750 switch LEDs and the Mode button that you
use to select one of the port modes.
All LEDs are visible through the GUI management applications—the Network
Assistant application for multiple switches and the device manager GUI for a
single switch. The switch software configuration guide describes how to use the
command-line interface (CLI) to configure and monitor individual switches and
switch clusters.
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Figure 1-13
Catalyst 3750-24TS, 3750G-24T, 3750G-12S, 3750G-16TD, 3750-48TS, 3750G-48TS,
3750G-24TS, and 3750G-24TS-1U Switch LEDs
9
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
12
11X
2X
2
3
4
5
6
7
8
12X
86545
1
1
Mode button
6
Master LED
2
Stack LED
7
RPS LED
3
Speed LED
8
System LED
4
Duplex LED
9
Port LED
5
Status LED
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Figure 1-14
Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, and 3750G-48PS
Switch LEDs
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
PoE
104062
MODE
1
2
3
4
6
5
7
8
9
1
Mode button
6
Status LED
2
PoE LED
7
Master LED
3
Stack LED
8
RPS LED
4
Speed LED
9
System LED
5
Duplex LED
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Chapter 1
Product Overview
Front Panel Description
System LED
The System LED shows whether the system is receiving power and is functioning
properly. Table 1-1 lists the LED colors and their meanings.
Table 1-1
System LED
Color
System Status
Off
System is not powered on.
Green
System is operating normally.
Amber
System is receiving power but is not functioning properly.
For information on the System LED colors during power-on self-test (POST), see
the “Powering On the Switch and Running POST” section on page 2-9.
RPS LED
The RPS LED shows the RPS status. Table 1-2 lists the LED colors and their
meanings.
Table 1-2
RPS LED
Color
RPS Status
Off
RPS is off or not properly connected.
Green
RPS is connected and ready to provide back-up power, if required.
Flashing green
RPS is connected but is unavailable because it is providing power to another device
(redundancy has been allocated to a neighboring device).
Amber
The RPS is in standby mode or in a fault condition. Press the Standby/Active button
on the RPS, and the LED should turn green. If it does not, the RPS fan could have
failed. Contact Cisco Systems.
Flashing amber
The internal power supply in a switch has failed, and the RPS is providing power
to the switch (redundancy has been allocated to this device).
For more information about the Cisco RPS 675, see the Cisco RPS 675 Redundant
Power System Hardware Installation Guide.
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Product Overview
Front Panel Description
Master LED
The Master LED shows the stack master status. Table 1-2 lists the LED colors and
their meanings.
Table 1-3
Master LED
Port Mode
Description
Off
Switch is not the stack master.
Green
Switch is the stack master or a standalone switch.
Amber
An error occurred when the switch was selecting the stack master
switch or a stack error.
Port LEDs and Modes
Each RJ-45 port, SFP module slot, and XENPAK module slot has a port LED.
These port LEDs, as a group or individually, display information about the switch
and about the individual ports. The port modes determine the type of information
displayed through the port LEDs. Table 1-4 lists the mode LEDs and their
associated port mode and meaning.
To select or change a mode, press the Mode button until the desired mode is
highlighted. When you change port modes, the meanings of the port LED colors
also change. Table 1-6 explains how to interpret the port LED colors in different
port modes.
If your switches are stacked and you press the Mode button on any one of the
switches in the stack, all the switches in the stack change to display the same
selected mode. For example, if you press the mode button on the stack master to
display SPEED, all the other switches in the stack also display SPEED.
Table 1-4
Port Mode LEDs
Mode LED
Port Mode
Description
STAT
Port status
The port status. This is the default mode.
DUPLX
Port duplex mode
The port duplex mode: full duplex or half duplex.
Note
The 10/100/1000 ports operate only in full-duplex
mode.
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Chapter 1
Product Overview
Front Panel Description
Table 1-4
Port Mode LEDs
Mode LED
Port Mode
Description
SPEED
Port speed
The port operating speed: 10, 100, or 1000 Mbps.
STACK
Stack member status
The stack member status.
StackWise port status
The StackWise port status. See the “Stack LED” section on
page 1-23 for more information.
10/100 and 10/100/1000
PoE port power
The PoE status.
PoE1
1. The PoE LED is on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, and 3750G-48PS switches.
Even if PoE mode is not selected on a Catalyst 3750-24PS, 3750G-24PS,
3750-48PS, or 3750G-48PS switch, the PoE LED still shows PoE problems when
they are detected.
Table 1-5 lists the PoE mode LED colors and their meanings.
Table 1-5
PoE Mode LED
Color
PoE Status
Off
PoE mode is not selected. None of the 10/100 or 10/100/1000 ports have been
denied power or are in a fault condition.
Green
PoE mode is selected, and the PoE status is shown on the port LEDs.
Blinking amber
PoE mode is not selected. At least one of the 10/100 or 10/100/1000 ports has been
denied power, or at least one of the 10/100 or 10/100/1000 ports has a PoE fault.
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Product Overview
Front Panel Description
Table 1-6
Meaning of LED Colors in Different Modes on the Switch
Port Mode
Port LED Color
Meaning
PoE1
Off
PoE is off.
If the powered device is receiving power from an AC power source,
the port LED is off even if the powered device is connected to the
switch port.
Green
PoE is on. The port LED is green only when the switch port is
providing power.
Alternating
green and
amber
PoE is denied because providing power to the powered device will
exceed the 370 W switch power capacity.
Blinking amber PoE is off due to a fault.
Caution
Amber
PoE faults are caused when noncompliant cabling or
powered devices are connected to a PoE port. Only
standard-compliant cabling can be used to connect Cisco
pre-standard IP Phones and wireless access points or
IEEE 802.3af-compliant devices to PoE ports. A cable or
device that causes a PoE fault must be removed from the
network.
PoE for the port has been disabled.
Note
PoE is enabled by default.
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Chapter 1
Product Overview
Front Panel Description
Table 1-6
Meaning of LED Colors in Different Modes on the Switch (continued)
Port Mode
Port LED Color
Meaning
STAT
(port status)
Off
No link, or port was administratively shut down.
Green
Link present.
Flashing green
Activity. Port is transmitting or receiving data.
Alternating
green-amber
Link fault. Error frames can affect connectivity, and errors such as
excessive collisions, CRC errors, and alignment and jabber errors
are monitored for a link-fault indication.
Amber
Port is blocked by Spanning Tree Protocol (STP) and is not
forwarding data.
Note
After a port is reconfigured, the port LED can remain amber
for up to 30 seconds as STP checks the switch for possible
loops.
Flashing amber Port is blocked by STP and is transmitting or receiving packets.
DUPLX
(duplex)
Off
Port is operating in half duplex.
Green
Port is operating in full duplex.
SPEED
10/100 and 10/100/1000 ports
Off
Port is operating at 10 Mbps.
Green
Port is operating at 100 Mbps.
Flashing green
Port is operating at 1000 Mbps.
SFP ports
Off
Port is operating at 10 Mbps.
Green
Port is operating at 100 Mbps.
Flashing green
Port is operating at 1000 Mbps.
Note
When installed in Catalyst 3750 switches, 1000BASE-T
SFP modules can operate at 10, 100, or 1000 Mbps in
full-duplex mode or in half-duplex mode at 10 or 100 Mbps.
XENPAK port
Off
Port is not operating.
Flashing green
Port is operating at up to 10 Gbps.
Catalyst 3750 Switch Hardware Installation Guide
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Product Overview
Front Panel Description
Table 1-6
Meaning of LED Colors in Different Modes on the Switch (continued)
Port Mode
Port LED Color
STACK
Off
(stack member) Flashing green
Green
Meaning
No stack member corresponding to that member number.
Selected switch’s member number.
Member number of other stack member switches.
1. The PoE LED is only on the Catalyst 3750-24PS and 3750-48PS switches.
Stack LED
The stack LED shows the sequence of member switches in a stack. Up to nine
switches can be members of a stack. The first nine port LEDs show the position
of a switch in a stack. Figure 1-15 shows a magnified view of the LEDs on the
first switch, which is member number 8 of the stack. For example, if you press the
Mode button to select the stack member on this switch, the port LED 8 flashes
green because this represents the member number of this switch. The port
LEDs 3 and 4 are solid green, as these represent the member numbers of other
switches in the stack. The other port LEDs are off because there are no more
members in the stack.
When the stack LED is selected, the representative stack LEDs are green when the
StackWise ports (on the switch rear panel) are up, and the representative stack
LEDs are amber when the ports are down:
•
SFP port LEDs 1 and 2 on the Catalyst 3750-24TS switch show the status for
StackWise ports 1 and 2, respectively.
•
SFP port LEDs 3 and 4 on the Catalyst 3750-48TS switch show the status for
StackWise ports 1 and 2, respectively.
•
SFP port LEDs 51 and 52 on the Catalyst 3750G-48TS and 3750G-48PS
switches show the status for StackWise ports 1 and 2, respectively.
•
SFP port LEDs 27 and 28 on the Catalyst 3750G-24TS, 3750G-24TS-1U, and
3750G-24PS switches show the status for StackWise ports 1 and 2,
respectively.
•
The 10/100/1000 port LEDs 23 and 24 on the Catalyst 3750G-24T switch
show the status for StackWise ports 1 and 2, respectively.
•
SFP port LEDs 11 and 12 on the Catalyst 3750G-12S switch show the status
for StackWise ports 1 and 2, respectively.
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Chapter 1
Product Overview
Front Panel Description
If the port LEDs are green on all the switches in the stack, the stack is operating
at full bandwidth (32 Gbps). If any of the port LEDs are not green, the stack is not
operating at full bandwidth.
Note
Figure 1-15
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
2
3
4
1X
5
6
7
8
Stack LED
9
10
11
12
13
14
15
16
17
18
19
20
15X 17X
21
22
23
24
25
26
2X
MODE
27
28
29
30
31
33
34
35
36
31X 33X
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
2
3
4
1X
5
6
7
8
9
10
11
12
37
38
39
40
41
42
13
14
15
16
18
20
21
22
23
24
25
26
27
28
1
29
31
3
32
34
4
35
36
31X 33X
37
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
MODE
4
5
6
7
8
9
10
11
12
47
Catalyst
3750 SERIE
48
S
2
3
48X
38
39
40
5
41
6
42
16X 18X
3
46
2
2
30
33
2
45
1
19
1X
1
44
32X 34X
17
15X 17X
1X
43
47X
2X
MODE
1
32
16X 18X
43
44
45
46
7
47
4
8
9
Catalyst
3750 SERIE
48
S
47X
13
14
15
16
32X 34X
17
18
15X 17X
1
19
20
21
22
10
11
12
13
2
23
24
25
26
2X
27
28
29
30
31
3
3
32
48X
33
31X 33X
16X 18X
34
35
36
37
38
39
40
41
42
43
44
45
46
47
4
Catalyst
3750 SERIE
48
S
47X
32X 34X
1
2X
2
3
4
86686
48X
1
Stack member 8
2
Stack member 3
3
Stack member 4
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Product Overview
Rear Panel Description
Rear Panel Description
The switch rear panels have an AC power connector, an RPS connector, an RJ-45
console port, and two StackWise ports. (See Figure 1-16 through Figure 1-19.)
STACK
1
STACK
2
Catalyst 3750-24TS, 3750G-24T, 3750G-12S, 3750G-16TD, and 3750-48TS Rear Panel
86548
Figure 1-16
CONSOLE
RATING
100-200
V~
1.6A-0>9
A, 50-6
0
1
2
3
HZ
DC INP
UTS FOR
REMOTE
POWER
SUPPLY
SPECIFI
ED IN
MANUAL
+12v
@8.5a
4
5
1 StackWise ports
4 AC power connector
2 RJ-45 console port
5 RPS connector
3 Fan exhaust
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Chapter 1
Product Overview
Rear Panel Description
STACK
1
Catalyst 3750G-24TS Rear Panel
DC INP
UTS FOR
REMOTE
POWER
SUPPLY
SPECIFI
ED IN
MANUAL
+12v
@17a
STACK
2
86547
Figure 1-17
CONSOLE
2
1
3
4
5
1 StackWise ports
4 AC power connector
2 RJ-45 console port
5 RPS connector
3 Fan exhaust
STACK
1
Catalyst 3750-24PS and 3750-48PS Rear Panel
STACK
2
104763
Figure 1-18
CONSOLE
DC INP
UTS FOR
REMOTE
POWER
SUPPLY
SPECIFI
ED IN
MANUAL
+12v
@8.5A
RATING
100-240
V~
1.6A-0>9
A, 50-6
2
1
0 HZ
3
4
1 StackWise ports
4 AC power connector
2 RJ-45 console port
5 RPS connector
3 Fan exhaust
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Product Overview
Rear Panel Description
Figure 1-19
STACK
1
STACK
2
Catalyst 3750G-24PS, 3750G-24TS-1U, 3750G-48PS, and 3750G-48TS Rear Panel
CONSO
LE
1
119772
DC INPU
TS FOR
REMOTE
POWER
SUPPLY
SPECIFI
ED IN
MANUAL
2
3
4
5
1 StackWise ports
4 RPS connector
2 RJ-45 console port
5 AC power connector
3 Fan exhaust
StackWise Ports
The Catalyst 3750 switch ships with a 0.5-meter StackWise cable (72-2632-XX
CABASY) that you can use to connect the StackWise ports.
Caution
Use only approved cables (CAB-STACK-50CM, CAB-STACK-1M, or
CAB-STACK-3M), and connect only to similar Cisco equipment. Equipment
might be damaged if connected to other nonapproved Cisco cables or equipment.
You can order these StackWise cables from your Cisco sales representative:
•
CAB-STACK-50CM= (0.5-meter cable)
•
CAB-STACK-1M= (1-meter cable)
•
CAB-STACK-3M= (3-meter cable)
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Chapter 1
Product Overview
Rear Panel Description
Power Connectors
The switch is powered through the internal power supply. You can also connect
the Cisco RPS 675 to provide backup power if the switch internal power supply
should fail.
Note
The Catalyst 3750 switch and the Cisco RPS 675 should be connected to the same
AC power source.
Internal Power Supply Connector
The internal power supply is an autoranging unit that supports input voltages
between 100 and 240 VAC. Use the supplied AC power cord to connect the AC
power connector to an AC power outlet.
Cisco RPS Connector
The Cisco RPS 675 (model PWR675-AC-RPS-N1=) supports the Catalyst 3750
family of switches.
Cisco RPS 675
The Cisco RPS 675 has two output levels: –48 V and 12 V with a total maximum
output power of 675 W. Use the supplied RPS connector cable to connect the RPS
to the switch.
Warning
Attach only the Cisco RPS (model PWR675-AC-RPS-N1=) to the RPS receptacle.
The RPS is a redundant power system that can support six external network
devices and provides power to one failed device at a time. It automatically senses
when the internal power supply of a connected device fails and provides power to
the failed device, preventing loss of network traffic. For more information on the
Cisco RPS 675, see the Cisco RPS 675 Redundant Power System Hardware
Installation Guide.
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Product Overview
Management Options
Console Port
You can connect the switch to a PC by means of the console port and the supplied
RJ-45-to-DB-9 female cable. If you want to connect the switch console port to a
terminal, you need to provide an RJ-45-to-DB-25 female DTE adapter. You can
order a kit (part number ACS-DSBUASYN=) containing that adapter from Cisco.
For console port and adapter pinout information, see the “Connector and Cable
Specifications” section on page B-1.
Management Options
The Catalyst 3750 switches offer several management options:
•
Network Assistant
Cisco Network Assistant is a PC-based network management GUI
application optimized for LANs of small and medium-sized businesses. Cisco
Network Assistant offers centralized management of Cisco switches ranging
from Cisco Catalyst 2950 through Cisco Catalyst 4506. Through a
user-friendly GUI, users can configure and manage switch clusters or
standalone switches. Cisco Network Assistant is available at no cost and can
be downloaded from this URL:
http://www.cisco.com/go/networkassistant
For information on starting the Network Assistant application, see the Getting
Started with Cisco Network Assistant guide on Cisco.com.
•
Device manager
You can use the device manager, which is in the switch memory, to manage
individual and standalone switches. This is an easy-to-use web interface that
offers quick configuration and monitoring. You can access the device
manager from anywhere in your network through a web browser. For more
information, see the device manager online help.
•
Cisco IOS command-line interface (CLI)
The switch CLI is based on Cisco IOS software and is enhanced to support
desktop-switching features. You can fully configure and monitor the switch
and switch cluster members from the CLI. You can access the CLI either by
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Chapter 1
Product Overview
Management Options
connecting your management station directly to the switch console port or by
using Telnet from a remote management station. See the Catalyst 3750 Switch
Command Reference on Cisco.com for more information.
•
CiscoView application
The CiscoView device-management application displays the switch image
that you can use to set configuration parameters and to view switch status and
performance information. The CiscoView application, which you purchase
separately, can be a standalone application or part of a Simple Network
Management Protocol (SNMP) platform. See the CiscoView documentation
for more information.
•
SNMP network management
You can manage switches from a SNMP-compatible management station that
is running platforms such as HP OpenView or SunNet Manager. The switch
supports a comprehensive set of Management Information Base (MIB)
extensions and four Remote Monitoring (RMON) groups. See the switch
software configuration guide on Cisco.com and the documentation that came
with your SNMP application for more information.
Network Configurations
See the switch software configuration guide on Cisco.com for network
configuration concepts and examples of using the switch to create dedicated
network segments and interconnecting the segments through Gigabit Ethernet
connections.
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C H A P T E R
2
Switch Installation
This chapter describes how to start your switch and how to interpret the power-on
self-test (POST) that ensures proper operation. It describes the planning and
cabling considerations to keep in mind while planning your stack. It describes
how to install the switch and make connections to the switch. Read the topics and
perform the procedures in this order:
•
Preparing for Installation, page 2-2
•
Verifying Switch Operation, page 2-9
•
Planning the Stack, page 2-11
•
Installing the Switch, page 2-16
•
Connecting StackWise Cable to StackWise Ports, page 2-35
•
Installing and Removing SFP Modules, page 2-38
•
Installing and Removing XENPAK Modules, page 2-42
•
Connecting to the 10/100 and 10/100/1000 Ports, page 2-48
•
Connecting to an SFP Module, page 2-52
•
Connecting to a XENPAK Module, page 2-56
•
Where to Go Next, page 2-59
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Switch Installation
Preparing for Installation
Preparing for Installation
This section covers these topics:
•
Warnings, page 2-2
•
Installation Guidelines, page 2-6
•
Verifying Package Contents, page 2-8
•
Verifying Switch Operation, page 2-9
Warnings
These warnings are translated into several languages in the Regulatory
Compliance and Safety Information for the Catalyst 3750 Switch document that
shipped with the switch.
Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE)
circuits if interconnections are made using uninsulated exposed metal
contacts, conductors, or terminals. Avoid using such interconnection methods,
unless the exposed metal parts are located within a restricted access location
and users and service people who are authorized within the restricted access
location are made aware of the hazard. A restricted access area can be
accessed only through the use of a special tool, lock and key or other means of
security. Statement 1072
Warning
Installation of the equipment must comply with local and national electrical
codes. Statement 1074
Warning
This unit is intended for installation in restricted access areas. A restricted
access area can be accessed only through the use of a special tool, lock and
key, or other means of security. Statement 1017
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Preparing for Installation
Warning
Only trained and qualified personnel should be allowed to install, replace, or
service this equipment. Statement 1030
Warning
Read the installation instructions before connecting the system to the power
source. Statement 1004
Warning
Before working on equipment that is connected to power lines, remove jewelry
(including rings, necklaces, and watches). Metal objects will heat up when
connected to power and ground and can cause serious burns or weld the metal
object to the terminals. Statement 43
Warning
Do not stack the chassis on any other equipment. If the chassis falls, it can
cause severe bodily injury and equipment damage. Statement 48
Warning
The plug-socket combination must be accessible at all times, because it serves
as the main disconnecting device. Statement 1019
Warning
To prevent the switch from overheating, do not operate it in an area that
exceeds the maximum recommended ambient temperature of 113°F (45°C). To
prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around
the ventilation openings. Statement 17B
Warning
When installing or replacing the unit, the ground connection must always be
made first and disconnected last. Statement 1046
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Switch Installation
Preparing for Installation
Warning
This equipment is intended to be grounded. Ensure that the host is connected to
earth ground during normal use. Statement 39
Warning
Do not work on the system or connect or disconnect cables during periods of
lightning activity. Statement 1001
Warning
Ultimate disposal of this product should be handled according to all national
laws and regulations. Statement 1040
Warning
Attach only the Cisco RPS (model PWR675-AC-RPS-N1) to the RPS receptacle.
Statement 100C
Warning
Class 1 laser product. Statement 1008
Warning
Avoid direct exposure to the laser beam. Statement 1012
Warning
If a redundant power system (RPS) is not connected to the switch, install an RPS
connector cover on the back of the switch. Statement 265
Warning
To comply with safety regulations, mount switches on a wall with the front
panel facing up. Statement 266
Warning
Ethernet cables must be shielded when used in a central office environment.
Statement 171
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Switch Installation
Preparing for Installation
Warning
For connections outside the building where the equipment is installed, the
following ports must be connected through an approved network termination
unit with integral circuit protection: 10/100/1000 Ethernet. Statement 1044
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:
Warning
•
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 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. Statement 1006
Invisible laser radiation may be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical
instruments.Statement 1051
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Chapter 2
Switch Installation
Preparing for Installation
Installation Guidelines
When deciding where to place the switch, be sure to observe these requirements:
Table 2-1
•
For copper Ethernet ports, including 10/100 ports, 10/100/1000 ports, and
1000BASE-T SFP module ports, cable lengths from the switch to connected
devices can be up to 328 feet (100 meters).
•
Table 2-1 lists the cable specifications for 1000BASE-SX, 1000BASE-LX,
1000BASE-ZX, and CWDM fiber-optic SFP module connections. Each port
must match the wave-length specifications on the other end of the cable, and
for reliable communications, the cable must not exceed the stipulated cable
length.
Fiber-Optic SFP Module Port Cabling Specifications
Core Size
(micron)
Modal
Bandwidth
(MHz/km)
Cable Distance
MMF
62.5
62.5
50
50
160
200
400
500
722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)
MMF1
62.5
50
50
9/10
500
400
500
—
1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
32,810 feet (10 km)
9/10
—
43.4 to 62 miles (70
to 100 km)
50/125
62.5/125
500
6,562 feet (2 km)
SFP Module
Wavelength
(nanometers)
Fiber Type
1000BASE-SX
850
1000BASE-LX/LH
1300
SMF
1000BASE-ZX
1550
SMF
100BASE-FX
Min.: 1270
MMF
Typical: 1300
Max.: 1380
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Switch Installation
Preparing for Installation
Table 2-1
Fiber-Optic SFP Module Port Cabling Specifications (continued)
Wavelength
(nanometers)
SFP Module
CWDM
1470, 1490,
1510, 1530,
1550, 1570,
1590, 1610
Fiber Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km)
Cable Distance
SMF
9/125
—
62 miles (100 km)
1. A mode-conditioning patch cord is required. Using an ordinary patch cord with MMF, 1000BASE-LX/LH SFP modules, and
a short link distance can cause transceiver saturation, resulting in an elevated bit error rate (BER). When using the LX/LH
SFP module with 62.5-micron diameter MMF, you must also install a mode-conditioning patch cord between the SFP module
and the MMF cable on both the sending and receiving ends of the link. The mode-conditioning patch cord is required for link
distances greater than 984 feet (300 m).
Note
When using shorter distances of single-mode fiber cable, you might need to insert
an inline optical attenuator in the link to avoid overloading the receiver.
When the fiber-optic cable span is less than15.43 miles (25 km), at each end of
the link, insert a 5-decibel (dB) or 10-dB inline optical attenuator between the
fiber-optic cable plant and the receiving port on the 1000BASE-ZX SFP module.
•
See the Catalyst 3750 release notes for cable requirements for XENPAK
module connections. Each port must match the wave-length specifications on
the other end of the cable, and for reliable communications, the cable must
not exceed the required cable length.
•
Operating environment is within the ranges listed in Appendix A, “Technical
Specifications.”
•
Clearance to front and rear panels is such that
– Front-panel indicators can be easily read.
– Access to ports is sufficient for unrestricted cabling.
Make sure that there is access to the rear of the rack if you are planning
to stack the switches. If you do not have access to the rear panel, make
sure you cable the switches before you rack-mount them.
– AC power cord can reach from the AC power outlet to the connector on
the switch rear panel.
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Preparing for Installation
•
Cabling is away from sources of electrical noise, such as radios, power lines,
and fluorescent lighting fixtures. Make sure the cabling is safely away from
other devices that might damage the cables.
•
Airflow around the switch and through the vents is unrestricted.
•
Temperature around the unit does not exceed 113°F (45°C).
Note
If the switch is installed in a closed or multirack assembly, the
temperature around it might be greater than normal room temperature.
Verifying Package Contents
Note
Carefully remove the contents from the shipping container, and check each item
for damage. If any item is missing or damaged, contact your Cisco representative
or reseller for support. Return all packing material to the shipping container, and
save it.
The switch is shipped with these items:
•
This Catalyst 3750 Switch Hardware Installation Guide
•
About the Catalyst 3750 Documentation flyer
•
AC power cord (AC-powered switches)
•
One RJ-45-to-DB-9 adapter cable
•
Mounting kit containing:
– Four rubber feet for mounting the switch on a table
– Two 19-inch rack-mounting brackets
– Four Phillips flat-head screws for attaching the brackets to the switch
(Catalyst 3750G-24TS switch)
– Six Phillips flat-head screws for attaching the brackets to the switch
(Catalyst 3750-24TS, 3750G-24TS-1U, 3750G-24T, 3750-48TS,
3750G-48TS, 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, and
3750G-16TD switches)
– Four Phillips machine screws for attaching the brackets to a rack
Catalyst 3750 Switch Hardware Installation Guide
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OL-6336-01
Chapter 2
Switch Installation
Preparing for Installation
– One cable guide and one black Phillips machine screw for attaching the
cable guide to one of the mounting brackets
– One RPS connector cover (for wall mounting)
– Two Phillips pan-head screws (for attaching the RPS cover)
– Four Phillips truss-head screws (for wall-mounting brackets)
– StackWise cable: 0.5-meter, 1-meter, or 3-meter cable.
Note
If you do not specify the length of the StackWise cable, the 0.5-meter
cable is supplied.
Verifying Switch Operation
Before installing the switch in a rack, on a wall, or on a table or shelf, you should
power the switch and verify that the switch passes POST. See Section 3, “Running
Express Setup,” in the getting started guide for the steps required to connect a PC
to the switch and to run Express Setup.
Powering On the Switch and Running POST
If your configuration has an RPS, connect the switch and the RPS to the same AC
power source. See the “Power Connectors” section on page 1-28, and see the
Cisco RPS documentation for more information.
Note
Always put the RPS in standby mode when you are connecting devices to it and
in active mode during normal operation.
To power on the switch, connect one end of the AC power cord to the AC power
connector on the switch, and connect the other end of the power cord to an AC
power outlet.
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Preparing for Installation
Warning
Attach only the Cisco RPS 675 (model PWR675-AC-RPS-N1=) to the RPS
receptacle
As the switch powers on, it begins the power-on self-test (POST), a series of tests
that runs automatically to ensure that the switch functions properly. POST lasts
approximately 1 minute.
When the switch begins POST, the System, the RPS, the Master, the Status, the
Duplex, the Speed, and the Stack LEDs turn green. (On the PoE switches, the PoE
LED also turns green as POST begins.) The System LED flashes green, and the
other LEDs remain continuous green.
When POST completes successfully, the System LED remains green. The RPS
LED remains green for some time and then returns to its operating status. The
other LEDs turn off and return to their operating status. When POST fails, the
System LED turns amber.
Note
POST failures are usually fatal. Call Cisco Systems if your switch does not pass
POST.
Powering Off the Switch
After a successful POST, disconnect the power cord from the switch. Install the
switch in a rack, on a wall, on a table, or on a shelf as described in the “Installing
the Switch” section on page 2-16.
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Planning the Stack
Planning the Stack
If you plan to stack your switches, read these sections:
•
Planning Considerations, page 2-11
•
Powering Considerations, page 2-12
•
Cabling Considerations, page 2-12
•
Recommended Cabling Configurations, page 2-14
Planning Considerations
Before connecting the Catalyst 3750 switches in a stack, observe these planning
considerations:
•
Size of the switch. For switch dimensions, see Appendix A, “Technical
Specifications.” Some switches are deeper than the other switches. Stacking
together switches of the same size will make it easier to cable the switches.
•
Length of cable. Depending on the configurations you have, you might need
different sized cables. If you don’t specify the length of the StackWise cable,
the 0.5-meter cable is supplied. If you require the 1-meter cable or 3-meter
cable, you can order it from your Cisco supplier. For cable numbers, see the
“StackWise Ports” section on page 1-27. The “Recommended Cabling
Configurations” section on page 2-14 provides examples of recommended
configurations.
•
Access to the rear ports for unrestricted cabling.
Make sure that there is access to the rear of the rack if you are planning to
stack the switches. If you do not have access to the rear panel, make sure you
cable the switches before you rack-mount them.
•
For concepts and procedures to manage switch stacks, see the switch software
configuration guide.
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Planning the Stack
Powering Considerations
Consider the following guidelines before you power the switches in a stack:
Note
•
The sequence in which the switches are initially powered on might affect the
switch that becomes the stack master.
•
If you want a particular switch to become the stack master, power on that
switch first. This switch becomes the stack master and remains the stack
master until a master re-election is required. After approximately 10 seconds
power on the remaining switches in the stack.
•
If you have no preference as to which switch becomes the stack master, power
on all the switches in the stack within a 10-second timeframe. These switches
participate in the stack master election. Switches powered on after the
10-second timeframe do not participate in the election.
•
Power off a switch before you add it to or remove it from an existing switch
stack.
For conditions that can cause a stack master re-election or to manually elect the
stack master, see the “Managing Switch Stacks” chapter in the switch software
configuration guide.
Cabling Considerations
The illustrations in this section display cabling configuration examples that show
the stack bandwidth and possible stack partitioning.
Figure 2-1 shows an example of a stack of Catalyst 3750 switches that provides
full bandwidth and redundant StackWise cable connections.
Figure 2-1
A
Example of a Stack with Full Bandwidth Connections
C
86821
B
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Planning the Stack
Figure 2-2 shows an example of a stack of Catalyst 3750 switches with
incomplete StackWise cabling connections. This stack provides only half
bandwidth and does not have redundant connections.
Figure 2-2
Example of a Stack with Half Bandwidth Connections
86823
A
B
Figure 2-3 and Figure 2-4 show examples of stacks of Catalyst 3750 switches
with failover conditions. In Figure 2-3, the StackWise cable is bad in link B;
therefore, this stack provides only half bandwidth and does not have redundant
connections. In Figure 2-4, link B is bad; therefore, this stack partitions into two
stacks, and switch 1 and switch 3 are stack masters.
Figure 2-3
Example of a Stack with a Failover Condition
B
C
Figure 2-4
86822
A
Example of a Partitioned Stack with a Failover Condition
B
86824
A
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Planning the Stack
Recommended Cabling Configurations
This section describes the recommended cabling configurations for stacking the
switches.
Stacking Switches in Vertical Racks or on a Table
Figure 2-5 is an example of a recommended configuration using the supplied
0.5-meter StackWise cable. In this example, the switches are stacked in a vertical
rack or on a table. This configuration provides redundant connections.
Stacking the Switches in a Vertical Rack or on a Table Using the
0.5-meter StackWise Cable
86586
Figure 2-5
The configuration examples in Figure 2-6 use the 3-meter StackWise cable in
addition to the supplied 0.5-meter StackWise cable. This configuration also
provides redundant connections.
Catalyst 3750 Switch Hardware Installation Guide
2-14
OL-6336-01
Chapter 2
Switch Installation
Planning the Stack
Stacking the Catalyst 3750 Switches in a Vertical Rack or on a
Table Using 0.5-meter and 3-meter StackWise Cables
86585
Figure 2-6
Side-by-Side Mounting in a Rack or on a Wall
Figure 2-7 and Figure 2-8 are examples of recommended configurations where
the switches are rack- or wall-mounted side-by-side. Use the 1-meter and 3-meter
StackWise cables to connect the switches. These configuration provide redundant
connections.
Stacking up to Eight Switches in a Side-by-Side Mounting Configuration
Figure 2-8
Stacking Nine Switches in a Side-by-Side Mounting Configuration
90532
86825
Figure 2-7
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-15
Chapter 2
Switch Installation
Installing the Switch
Installing the Switch
This section describes these installation procedures:
•
Rack-Mounting, page 2-16
•
Wall-Mounting, page 2-31
•
Table- or Shelf-Mounting, page 2-34
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:
•
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 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. Statement 1006
To install the switch in a 19-inch or 24-inch rack (24-inch racks require optional
mounting hardware), follow the instructions described in these procedures:
•
Removing Screws from the Switch, page 2-17
•
Attaching Brackets to the Catalyst 3750G-24TS Switch, page 2-19
•
Attaching Brackets to the Catalyst 3750-24TS, 3750G-24TS-1U,
3750G-24T, 3750G-12S, 3750-24PS, 3750G-24PS, 3750-48PS,
3750G-48PS, 3750G-16TD, 3750-48TS, and 3750G-48TS Switches,
page 2-24
•
Mounting the Switch in a Rack, page 2-27
•
Attaching the Cable Guide, page 2-29
Catalyst 3750 Switch Hardware Installation Guide
2-16
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
Installing the switch in a 24-inch rack requires an optional bracket kit not included
with the switch. You can order a kit containing the 24-inch rack-mounting
brackets and hardware from Cisco. For the Catalyst 3750G-24TS switches, order
part number RCKMNT-3550-1.5RU=. For the other Catalyst 3750 switches, order
part number RCKMNT-1RU=.
Note
Removing Screws from the Switch
If you plan to install the switch in a rack, you must first remove screws in the
switch chassis so that mounting brackets can be attached. Figure 2-9, Figure 2-10,
and Figure 2-11 show how to remove the chassis screws in a one-rack-unit (RU)
switch.
16
17
18
19
20
21
Removing Screws from the Catalyst 3750-24TS, 3750G-24T, 3750-24PS, 3750-48PS,
3750G-16TD, and 3750-48TS Switches
22
23
Catalyst
24
86819
Figure 2-9
3750 SER
IES
23X
1
24X
2
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-17
Chapter 2
Switch Installation
Installing the Switch
40
41
42
43
44
45
46
Removing Screws from the Catalyst ,3750G-24TS-1U, 3750G-24PS, 3750G-48PS, and
3750G-48TS Switches
47
126143
Figure 2-10
Catalys
t 3750G
48
SERIES
47X
49
51
50
48X
Removing Screws from the Catalyst 3750G-12S Switch
97170
Figure 2-11
52
16
Catalyst
8
9
3750 SER
IES
10
11
12
Figure 2-12 shows how to remove the chassis screws in a 1.5-RU switch.
Catalyst 3750 Switch Hardware Installation Guide
2-18
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
Removing Screws from the 3750G-24TS Switch
Catalyst
86820
Figure 2-12
3750 SER
IES
23
24
23X
25
26
27
28
24X
Attaching Brackets to the Catalyst 3750G-24TS Switch
The bracket orientation and the brackets that you use depend on whether you are
attaching the brackets for a 19-inch or a 24-inch rack. For 19-inch racks, use part
number 700-11523-XX; for 24-inch racks, use part number 700-12398-XX.
Figure 2-13 through Figure 2-18 show how to attach each type bracket to one side
of the switch. Follow the same steps to attach the second bracket to the opposite
side.
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-19
Chapter 2
Switch Installation
Installing the Switch
Figure 2-13
Attaching Brackets for 19-inch Racks, Front Panel Forward
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
12
11X
13
14
15
16
13X
2X
17
14X
1
86839
12X
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
2-20
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
Figure 2-14
Attaching Brackets for 24-Inch Racks, Front Panel Forward
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
12
11X
12X
1
86557
2X
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-21
Chapter 2
Switch Installation
Installing the Switch
Figure 2-15
Attaching Brackets for 19-Inch Racks, Rear Panel Forward
1
1
86555
DC IN
PUTS
FOR RE
POWE
MO
SPECIFI R SUPPLY TE
ED IN
MANU
+12v
@17a AL
Phillips flat-head screws
Figure 2-16
Attaching Brackets for 24-Inch Racks, Rear Panel Forward
DC IN
PUTS
FOR RE
POWE
MO
SPECIFI R SUPPLY TE
ED IN
MANU
+12v
@17a AL
86556
1
1
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
2-22
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
Figure 2-17
13
14
15
16
13X
Attaching Brackets for 19-Inch Telco Racks
Catalyst
17
18
19
20
21
22
23
3750 SER
IES
24
23X
25
14X
26
27
28
1
1
86558
24X
Phillips flat-head screws
Figure 2-18
13
13X
14
15
16
Attaching Brackets for 24-Inch Telco Racks
Catalyst
17
18
19
20
21
22
23
3750 SER
IES
24
23X
25
14X
26
27
28
1
1
86559
24X
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-23
Chapter 2
Switch Installation
Installing the Switch
Attaching Brackets to the Catalyst 3750-24TS, 3750G-24TS-1U, 3750G-24T,
3750G-12S, 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-16TD,
3750-48TS, and 3750G-48TS Switches
The bracket orientation and the brackets you use depend on whether you are
attaching the brackets for a 19-inch or a 24-inch rack. For 19-inch racks, use
bracket part number 700-8209-XX; for 24-inch racks, use bracket part number
700-13248-XX. Figure 2-19 through Figure 2-25 show how to attach each type
bracket to one side of the switch. Follow the same steps to attach the second
bracket to the opposite side.
Figure 2-19
Attaching Brackets for 19-Inch Racks, Front Panel Forward
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
12
11X
12X
1
86560
2X
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
2-24
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
Figure 2-20
Attaching Brackets for 24-Inch Racks, Front Panel Forward
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
2
1X
3
4
5
2X
Phillips flat-head screws
Figure 2-21
RATIN
G
100-2
1.6A-0> 00V ~
9A, 50
-60 HZ
Attaching Brackets for 19-Inch Racks, Rear Panel Forward
DC IN
PUTS
FOR RE
POWE
MO
SPECIFI R SUPPLY TE
ED IN
MANU
+12v
@8.5a AL
1
1
86562
1
86561
MODE
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-25
Chapter 2
Switch Installation
Installing the Switch
Figure 2-22
Attaching Brackets for 24-Inch Racks, Rear Panel Forward
1
1
Phillips flat-head screws
Figure 2-23
9
86563
DC IN
PUTS
FOR RE
POWE
MO
SPECIFI R SUPPLY TE
ED IN
MANU
+12v
@8.5a AL
RATIN
G
100-2
1.6A-0> 00V ~
9A, 50
-60 HZ
10
11
Attaching Brackets for 19-Inch Telco Racks
12
11X
13
13X
14
15
16
17
18
19
20
21
22
23
Catalyst
24
3750 SER
IES
23X
12X
14X
2
1
1
86564
1
24X
Phillips flat-head screws
Catalyst 3750 Switch Hardware Installation Guide
2-26
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
Attaching Brackets for 19-Inch Racks
97171
Figure 2-24
16
Catalyst
8
9
3750 SER
IES
10
11
12
1
1
Phillips truss-head screws
Figure 2-25
9
10
11
Attaching Brackets for 24-Inch Telco Racks
12
11X
13
13X
14
15
16
17
18
19
20
21
22
23
Catalyst
24
3750 SER
IES
23X
12X
14X
1
2
1
86840
24X
1
Phillips flat-head screws
Mounting the Switch in a Rack
After the brackets are attached to the switch, use the four supplied number-12
Phillips machine screws to securely attach the brackets to the rack, as shown in
Figure 2-26 and Figure 2-27.
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
2-27
Chapter 2
Switch Installation
Installing the Switch
Figure 2-26
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
Mounting the Catalyst 3750G-24TS Switch in a Rack
1
2
1X
3
4
5
6
7
8
9
10
11
12
MODE
11X
13
14
15
16
13X
2X
17
Catalyst
18
19
3750 SERIE
S
20
21
22
23
24
23X
12X
25
26
14X
27
28
24X
1
86566
1
Phillips machine screws
Figure 2-27
Mounting the Other Catalyst 3750 Switches in a Rack
SYST
RPS
MASTR
STAT
DUPLX
SPEE
SYST D
STAC
RPS K
1
2
1
2
3
4
3
4
1X
5
6
5
6
MODE MASTR
STAT
DUPLX
SPEED
STACK
1X
MODE
2X
7
8
7
8
9
10
9
10
11
12
11
12
11X
13
14
13
14
15
16
15
16
13X
11X
12X
13X
17
18
17
18
19
20
19
20
21
22
21
22
23
24
23
24
Catalyst
3750 SERIE
S
Catalyst
3750 SERIE
S
23X
2X
14X
23X
1
12X
24X
2
14X
1
1
1
1
2
86567
86567
24X
Phillips machine screws
Catalyst 3750 Switch Hardware Installation Guide
2-28
OL-6336-01
Chapter 2
Switch Installation
Installing the Switch
After the switch is mounted in the rack, you might need to perform these tasks to
complete the installation, run the setup program, and access the switch:
•
(Optional) Connect the switches in the stacks. See the “Connecting
StackWise Cable to StackWise Ports” section on page 2-35.
•
Power on the switch. See the “Verifying Switch Operation” section on
page 2-9.
•
Connect to a 10/100 or 10/100/1000 port and run Express Setup. See the
Catalyst 3750 Switch Getting Started Guide for instructions.
•
Connect to the front-panel ports. See the “Connecting to the 10/100 and
10/100/1000 Ports” section on page 2-48 and the “Connecting to an SFP
Module” section on page 2-52 to complete the installation.
For configuration instructions about using the CLI setup program, go to
Appendix C, “Configuring the Switch with the CLI-Based Setup Program.”
To use the CLI, enter commands at the Switch> prompt through the console port
by using a terminal program or through the network by using Telnet. For
configuration information, see the switch software configuration guide or the
switch command reference.
Attaching the Cable Guide
We recommend attaching the cable guide to prevent the cables from obscuring the
front panel of the switch and the other devices installed in the rack. Use the
supplied black screw, as shown in Figure 2-28 and Figure 2-29 to attach the cable
guide to the left or right bracket.
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Installing the Switch
Figure 2-28
Attaching the Cable Guide on the 24-Port Catalyst 3750 Switches
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
2
3
4
5
1X
6
7
MODE
8
9
10
11
12
11X
13
14
15
16
13X
17
18
19
20
2X
21
22
23
Catalyst
24
3750 SERIE
S
23X
12X
1
14X
25
24X
86568
26
1
Cable guide screws
The 48-port Catalyst 3750 switches ship with the cable guide shown in
Figure 2-29. This cable guide secures up to 48 cables. Use the supplied black
screw to mount it on the left bracket.
Note
Figure 2-29
Attaching the Cable Guide on the 48-Port Catalyst 3750 Switches
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
MODE
2
3
4
1X
5
6
7
8
9
10
11
12
13
14
15
16
17
15X 17X
2X
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
31X 33X
16X 18X
36
37
38
39
40
41
42
43
44
45
46
47
Catalyst
48
3750 SERIE
S
47X
32X 34X
1
1
2
3
4
86569
48X
1
Cable guide screws
Catalyst 3750 Switch Hardware Installation Guide
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Chapter 2
Switch Installation
Installing the Switch
Wall-Mounting
To install the switch on a wall, follow the instructions in these procedures:
•
Attaching the Brackets to the Switch for Wall-Mounting, page 2-31
•
Attaching the RPS Connector Cover, page 2-32
•
Mounting the Switch on a Wall, page 2-32
The illustrations in this section show the Catalyst 3750G-24TS switch as an
example. All the Catalyst 3750 switches are wall-mounted following the same
procedures.
Note
Attaching the Brackets to the Switch for Wall-Mounting
Figure 2-30 shows how to attach a 19-inch bracket to one side of the switch.
Follow the same steps to attach the second bracket to the opposite side.
Figure 2-30
Attaching the 19-inch Brackets for Wall-Mounting
Catalyst
3750 SER
IES
23
24
23X
25
26
27
28
1
1
86687
24X
Phillips truss-head screws
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Switch Installation
Installing the Switch
Attaching the RPS Connector Cover
If you are not using an RPS with your switch, use the two Phillips pan-head
screws to attach the RPS connector cover to the back of the switch, as shown in
Figure 2-31.
If an RPS is not connected to the switch, install an RPS connector cover on the
back of the switch.
Warning
Figure 2-31
STACK
1
Attaching the RPS Connector Cover on the Catalyst 3750 Switch
DC INP
UTS FOR
REMOTE
POWER
SUPPLY
SPECIF
IED IN
MANUAL
+12v
@8.5a
STACK
2
1
2
3
1
Phillips pan-head screws
2
RPS connector cover
3
86571
CONSOLE
RPS connector
Mounting the Switch on a Wall
For the best support of the switch and cables, make sure the switch is attached
securely to wall studs or to a firmly attached plywood mounting backboard.
Mount the switch with the front panel facing up, as shown in Figure 2-32.
Warning
To comply with safety regulations, mount the switches on a wall with the front
panel facing up.
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Switch Installation
Installing the Switch
Mounting the Switch on a Wall
t 3750
IE
R
E
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S
Figure 2-32
X
24
Catalys
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15
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20
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24
MODE
1
2
3
4
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2X
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13
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23
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86570
1
1
User-supplied screws
After the switch is mounted on the wall, you might need to perform these tasks to
complete the installation, run the setup program, and access the switch:
•
(Optional) Connect the switches in the stacks. See the “Connecting
StackWise Cable to StackWise Ports” section on page 2-35.
•
Power on the switch. See the “Verifying Switch Operation” section on
page 2-9.
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Chapter 2
Switch Installation
Installing the Switch
•
Connect to a 10/100 or 10/100/1000 port and run Express Setup. See the
Catalyst 3750 Switch Getting Started Guide for instructions.
•
Connect to the front-panel ports. See the “Connecting to the 10/100 and
10/100/1000 Ports” section on page 2-48 and the “Connecting to an SFP
Module” section on page 2-52 to complete the installation.
For configuration instructions about using the CLI setup program, go to
Appendix C, “Configuring the Switch with the CLI-Based Setup Program.”
To use the CLI, enter commands at the Switch> prompt through the console port
by using a terminal program or through the network by using Telnet. For
configuration information, see the switch software configuration guide or the
switch command reference.
Table- or Shelf-Mounting
Follow these steps to install the switch on a table or shelf:
Step 1
Locate the adhesive strip with the rubber feet in the mounting-kit envelope. Attach
the four rubber feet to the recessed areas on the bottom of the unit.
Step 2
Place the switch on the table or shelf near an AC power source.
After the switch is mounted on the table, you might need to perform these tasks
to complete the installation, run the setup program, and access the switch:
•
(Optional) Connect the switches in the stacks. See the “Connecting
StackWise Cable to StackWise Ports” section on page 2-35.
•
Power on the switch. See the “Verifying Switch Operation” section on
page 2-9.
•
Connect to a 10/100 or 10/100/1000 port and run Express Setup. See the
Catalyst 3750 Switch Getting Started Guide for instructions.
•
Connect to the front-panel ports. See the “Connecting to the 10/100 and
10/100/1000 Ports” section on page 2-48 and the “Connecting to an SFP
Module” section on page 2-52 to complete the installation.
For configuration instructions about using the CLI setup program, go to
Appendix C, “Configuring the Switch with the CLI-Based Setup Program.”
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Switch Installation
Connecting StackWise Cable to StackWise Ports
To use the CLI, enter commands at the Switch> prompt through the console port
by using a terminal program or through the network by using Telnet. For
configuration information, see the switch software configuration guide or the
switch command reference.
Connecting StackWise Cable to StackWise Ports
Follow these steps to connect the StackWise cable to the StackWise ports:
Step 1
Remove the dust covers from the StackWise cables and StackWise ports, and store
them for future use.
Step 2
Insert one end of the StackWise cable into the StackWise port on the back of the
switch.
Note
Always use a Cisco-approved StackWise cable to connect the switches.
Step 3
Use the window in the StackWise cable to align the connector correctly. Secure
the screws tightly.
Step 4
Insert the other end of the cable into the connector of the other switch, and secure
the screws tightly.
Caution
Note
Removing and installing the StackWise cable can shorten its useful life.
Do not remove and insert the cable more often than is absolutely
necessary.
When the connectors are not being used, replace the dust covers on them
to protect them from dust.
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Chapter 2
Switch Installation
Connecting StackWise Cable to StackWise Ports
Figure 2-33
Inserting the StackWise Cable in a StackWise Port
1
STACK
2
CONSO
LE
86549
STACK
When you need to remove the StackWise cable from the connector, make sure to
fully unscrew the screws before removing the connector. Also make sure that you
remove the correct screws from the StackWise port. See Figure 2-34 for correct
removal procedures and Figure 2-35 for incorrect removal procedures.
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Switch Installation
Connecting StackWise Cable to StackWise Ports
Figure 2-34
Correct Removal of the StackWise Cable from a StackWise Port
1
STACK
CONSO
2
LE
86826
STACK
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Switch Installation
Installing and Removing SFP Modules
Figure 2-35
Incorrect Removal of a StackWise Cable from a StackWise Port
1
STACK
CONSO
2
LE
86827
STACK
Installing and Removing SFP Modules
These sections describe how to install and remove SFP modules. SFP modules are
inserted into SFP module slots on the front of the Catalyst 3750 switches. These
field-replaceable modules provide uplink interfaces.
You can use any combination of SFP modules. See the Catalyst 3750 release notes
for the list of SFP modules that the Catalyst 3750 switch supports. Each port must
match the wave-length specifications on the other end of the cable, and the cable
must not exceed the stipulated cable length for reliable communications. See the
“Installation Guidelines” section on page 2-6 for cable stipulations for SFP
connections.
Use only Cisco SFP modules on the Catalyst 3750 switch. Each SFP module has
an internal serial EEPROM that is encoded with security information. This
encoding provides a way for Cisco to identify and validate that the SFP module
meets the requirements for the switch.
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Switch Installation
Installing and Removing SFP Modules
For detailed instructions on installing, removing, and cabling the SFP module, see
your SFP module documentation.
Installing SFP Modules into SFP Module Slots
Figure 2-36 shows an SFP module that has a bale-clasp latch.
Caution
We strongly recommend that you do not install or remove fiber-optic SFP modules
with cables attached because of the potential damage to the cables, the cable
connector, or the optical interfaces in the SFP module. Disconnect all cables
before removing or installing an SFP module.
Removing and installing an SFP module can shorten its useful life. Do not remove
and insert SFP modules more often than is absolutely necessary.
SFP Module with a Bale-Clasp Latch
86575
Figure 2-36
To insert an SFP module into the SFP module slot, follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on
the chassis.
Step 2
Find the send (TX) and receive (RX) markings that identify the top side of the SFP
module.
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Chapter 2
Switch Installation
Installing and Removing SFP Modules
Note
On some SFP modules, the send and receive (TX and RX) markings might
be replaced by arrows that show the direction of the connection, either
send or receive (TX or RX).
Step 3
Align the SFP module in front of the slot opening.
Step 4
Insert the SFP module into the slot until you feel the connector on the module snap
into place in the rear of the slot.
Figure 2-37
Installing an SFP Module into an SFP Module Slot
13
13X
Catalyst
5
3750 SERIE
S
6
7
8
9
11
12
14X
Step 5
Caution
97169
10
For fiber-optic SFP modules, remove the dust plugs from the optical ports, and
store them for later use.
Do not remove the dust plugs from the fiber-optic SFP module port or the rubber
caps from the fiber-optic cable until you are ready to connect the cable. The plugs
and caps protect the SFP module ports and cables from contamination and
ambient light.
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Switch Installation
Installing and Removing SFP Modules
Step 6
Insert the cable connector into the SFP module:
•
For fiber-optic SFP modules, insert the LC or MT-RJ cable connector into the
SFP module.
•
For copper SFP modules, insert the RJ-45 cable connector into the SFP
module.
Note
When connecting to 1000BASE-T SFP modules, be sure to use a twisted
four-pair, Category 5 cable.
Removing SFP Modules from SFP Module Slots
To remove an SFP module from a module slot, follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on
the chassis.
Step 2
Disconnect the cable from the SFP module.
Tip
Step 3
For reattachment, note which cable connector plug is send (TX) and which is
receive (RX).
Unlock and remove the SFP module, as shown in Figure 2-38.
If the module has a bale-clasp latch, pull the bale out and down to eject the
module. If the bale-clasp latch is obstructed and you cannot use your index finger
to open it, use a small, flat-blade screwdriver or other long, narrow instrument to
open the bale-clasp latch.
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Switch Installation
Installing and Removing XENPAK Modules
Figure 2-38
13
14
13X
15
16
Removing a Bale-Clasp Latch SFP Module by Using a Flat-Blade Screwdriver
17
18
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23
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86554
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Bale clasp
Step 4
Grasp the SFP module between your thumb and index finger, and carefully
remove it from the module slot.
Step 5
For fiber-optic SFP modules, insert a dust plug into the optical ports of the SFP
module to keep the optical interfaces clean.
Step 6
Place the removed SFP module in an antistatic bag or other protective
environment.
Installing and Removing XENPAK Modules
These sections describe how to install and remove XENPAK modules. XENPAK
modules are inserted into the XENPAK module slot on the front panel of the
Catalyst 3750G-16TD switch. These field-replaceable transceiver modules
provide 10-Gigabit interfaces.
Note
The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet
module ports in the switch software documentation.
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Switch Installation
Installing and Removing XENPAK Modules
See the Catalyst 3750 release notes for the list of XENPAK modules that the
Catalyst 3750G-16TD switch supports. Use only Cisco XENPAK modules on the
Catalyst 3750G-16TD switch. Each XENPAK module has an internal serial
EEPROM that is encoded with security information. This encoding provides a
way for Cisco to identify and validate that the XENPAK module meets the
requirements for the switch.
See the Catalyst 3750 release notes for cable requirements for XENPAK module
connections. For detailed instructions on installing, removing, cabling, and
troubleshooting the XENPAK module, see your XENPAK module
documentation.
Installing a XENPAK Module
Figure 2-39 shows a XENPAK module.
Caution
We strongly recommend that you do not install or remove fiber-optic XENPAK
modules with cables attached because of the potential damage to the cables, the
cable connector, or the optical interfaces in the XENPAK module. Disconnect all
cables before removing or installing the XENPAK module.
Caution
Do not remove the dust plugs from the fiber-optic XENPAK module or the rubber
caps from the fiber-optic cable until you are ready to connect the cable. The plugs
and caps protect the XENPAK module ports and cables from contamination and
ambient light.
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Chapter 2
Switch Installation
Installing and Removing XENPAK Modules
Figure 2-39
XENPAK Module
3
4
TX
2
99376
RX
1
1
Captive installation screw
3
Transmit optical bore
2
Optical bore dust plug
4
Receive optical bore
To insert a XENPAK module, follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on
the chassis.
Step 2
Remove the two Phillips-head retaining screws from the XENPAK module slot
cover, and store them for later use.
Step 3
Remove the cover, as shown in Figure 2-40.
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Switch Installation
Installing and Removing XENPAK Modules
Figure 2-40
Removing the XENPAK Module Slot Cover
Catalyst 37
50 series
1
104764
1
2
1
Phillips-head screw
2
Module slot cover
Step 4
Remove the XENPAK module from the protective packaging.
Step 5
Align the XENPAK module with the guide rails inside the module slot, and slide
the module into the opening until the back of the XENPAK faceplate is flush with
the switch faceplate. (See Figure 2-41.)
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Chapter 2
Switch Installation
Installing and Removing XENPAK Modules
Figure 2-41
Installing a XENPAK Module in the Catalyst 3750G-16TD Switch
Catalyst 37
50 series
TX
104573
1
RX
1
2
1
Optical bore dust plug
Step 6
2
Captive installation screw
Secure the XENPAK module in place by tightening the two captive installation
screws. Do not overtighten the captive screws.
Removing a XENPAK Module
To remove a XENPAK module, follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on
the chassis.
Step 2
Disconnect the cable from the XENPAK module. For fiber-optic modules, install
the optical bore dust plugs.
Step 3
Loosen the two captive installation screws that secure the XENPAK module in the
slot.
Step 4
Carefully pull on the two captive installation screws to disconnect the XENPAK
module from the slot.
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Switch Installation
Installing and Removing XENPAK Modules
Step 5
Figure 2-42
Grasp the edges of the XENPAK module, and carefully slide it out of the slot, as
shown in Figure 2-42.
Removing a XENPAK Module
Catalyst 37
50 series
TX
104574
1
RX
1
2
1
Optical bore dust plug
Step 6
2
Captive installation screw
Use two Phillips-head screws to attach the XENPAK module slot cover to the
switch front panel, as shown in Figure 2-43.
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Chapter 2
Switch Installation
Connecting to the 10/100 and 10/100/1000 Ports
Figure 2-43
Replacing the XENPAK Module Slot Cover
Catalyst 37
50 series
1
104765
1
2
1
Phillips-head screw
2
Module slot cover
Connecting to the 10/100 and 10/100/1000 Ports
The switch 10/100 and 10/100/1000 ports configure themselves to operate at the
speed of attached devices. If the attached ports do not support autonegotiation,
you can explicitly set the speed and duplex parameters. Connecting devices that
do not autonegotiate or that have their speed and duplex parameters manually set
can reduce performance or result in no linkage.
To maximize performance, choose one of these methods for configuring the
Ethernet ports:
•
Let the ports autonegotiate both speed and duplex.
•
Set the port speed and duplex parameters on both ends of the connection.
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Switch Installation
Connecting to the 10/100 and 10/100/1000 Ports
Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE)
circuits if interconnections are made using uninsulated exposed metal
contacts, conductors, or terminals. Avoid using such interconnection methods,
unless the exposed metal parts are located within a restricted access location
and users and service people who are authorized within the restricted access
location are made aware of the hazard. A restricted access area can be
accessed only through the use of a special tool, lock and key or other means of
security. Statement 1072
You can configure the 10/100 and 10/100/1000 ports on the Catalyst 3750-24PS,
3750G-24PS, 3750-48PS, and 3750G-48PS switches either to automatically
provide PoE when a Cisco IP Phone, Cisco Aironet Access Point, or end device
compliant with IEEE 802.3af is connected or never to provide PoE, even if an IP
phone or an access point is connected. The default setting is Auto. To prevent ESD
damage, follow your normal board and component handling procedures.
Use the guidelines in Table 2-2 to select the correct cable for connecting the
switch 10/100 and 10/100/1000 ports to other devices. See the “Cable and Adapter
Specifications” section on page B-5 for cable-pinout descriptions.
Table 2-2
Recommended Ethernet Cables
Device
Crossover Cable1
Straight-Through Cable1
Switch to switch
Yes
No
Switch to hub
Yes
No
Switch to computer
or server
No
Yes
Switch to router
No
Yes
Switch to IP phone
No
Yes
1. 100BASE-TX and 1000BASE-T traffic requires twisted four-pair, Category 5 cable.
10BASE-T traffic can use Category 3 or Category 4 cable.
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Switch Installation
Connecting to the 10/100 and 10/100/1000 Ports
Note
You can use the mdix auto interface configuration command in the CLI to enable
the automatic medium-dependent interface crossover (Auto-MDIX) feature.
When the Auto-MDIX feature is enabled, the switch detects the required cable
type for copper Ethernet connections and configures the interfaces accordingly.
Therefore, you can use either a crossover or a straight-through cable for
connections to a copper 10/100, 10/100/1000, or 1000BASE-T SFP module port
on the switch, regardless of the type of device on the other end of the connection.
The Auto-MDIX feature is enabled by default on switches running Cisco IOS
Release 12.2(18)SE or later. For releases between Cisco IOS
Release 12.1(14)EA1 and 12.2(18)SE, the Auto-MDIX feature is disabled by
default. For configuration information for this feature, see the switch software
configuration guide or the switch command reference.
Follow these steps to connect to 10BASE-T, 100BASE-TX or 1000BASE-T
devices:
Caution
PoE faults are caused when noncompliant cabling or powered devices are
connected to a PoE port. Only standard-compliant cabling can be used to connect
Cisco pre-standard IP Phones and wireless access points or
IEEE 802.3af-compliant devices to PoE ports. A cable or device that causes a
PoE fault must be removed from the network.
Step 1
When connecting to workstations, servers, routers, and Cisco IP Phones, connect
a straight-through cable to an RJ-45 connector on the front panel. (See
Figure 2-44.) When connecting to switches or repeaters, use a crossover cable.
(See the “Cable and Adapter Specifications” section on page B-5 for cable-pinout
descriptions.)
Note
When connecting to 1000BASE-T-compatible devices, be sure to use a
twisted four-pair, Category 5 cable.
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Switch Installation
Connecting to the 10/100 and 10/100/1000 Ports
Step 2
Note
The Catalyst 3750 switch can connect to a Cisco IP Phone through a
straight-through, twisted four-pair Category 5 cable. The rear panel of the
Cisco IP Phone might have more than one RJ-45 connector. Use the
LAN-to-phone connector to connect the IP phone to the switch. See the
Cisco IP Phone documentation for more information about connecting
devices to it.
Note
Many legacy powered devices, including older Cisco IP phones and
access points that do not fully support IEEE 802.3af, might not support
PoE when connected to the switches by a crossover cable.
Connect the other end of the cable to an RJ-45 connector on the other device. The
port LED turns on when both the switch and the connected device have
established link.
The port LED is amber while Spanning Tree Protocol (STP) discovers the
topology and searches for loops. This takes about 30 seconds, and then the port
LED turns green. If the port LED does not turn on, the device at the other end
might not be turned on, or there might be a cable problem or a problem with the
adapter installed in the attached device. See Chapter 3, “Troubleshooting,” for
solutions to cabling problems.
Step 3
Reconfigure and reboot the connected device if necessary.
Step 4
Repeat Steps 1 through 3 to connect each device.
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Switch Installation
Connecting to an SFP Module
Figure 2-44
Connecting to an Ethernet Port
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
1
1X
2
3
4
5
6
7
8
9
10
11
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MODE
11X
86818
2X
12X
Connecting to an SFP Module
This section describes how to connect to SFP modules. For instructions on how to
connect to fiber-optic SFP modules, see the “Connecting to 1000BASE-T SFP
Modules” section. For instructions on how to connect to 1000BASE-T SFP
modules, see the “Connecting to 1000BASE-T SFP Modules” section.
For instructions about how to install or remove an SFP module, see the “Installing
and Removing SFP Modules” section on page 2-38.
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Switch Installation
Connecting to an SFP Module
Connecting to a Fiber-Optic SFP Module
Follow these steps to connect a fiber-optic cable to an SFP module:
Warning
Caution
Class 1 laser product. Statement 1008
Do not remove the rubber plugs from the SFP module port or the rubber caps from
the fiber-optic cable until you are ready to connect the cable. The plugs and caps
protect the SFP module ports and cables from contamination and ambient light.
Before connecting to the SFP module, be sure that you understand the port and
cabling stipulations in “Installation Guidelines” section on page 2-6 and in the
“SFP Module Slots” section on page 1-14. See Appendix B, “Connector and
Cable Specifications” for information about the LC on the SFP module.
Step 1
Remove the rubber plugs from the module port and fiber-optic cable, and store
them for future use.
Step 2
Insert one end of the fiber-optic cable into the SFP module port (see Figure 2-45).
Step 3
Insert the other cable end into a fiber-optic receptacle on a target device.
Step 4
Observe the port status LED.
The LED turns green when the switch and the target device have an established
link.
The LED turns amber while the STP discovers the network topology and searches
for loops. This process takes about 30 seconds, and then the port LED turns green.
If the LED is off, the target device might not be turned on, there might be a cable
problem, or there might be problem with the adapter installed in the target device.
See Chapter 3, “Troubleshooting,” for solutions to cabling problems.
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Switch Installation
Connecting to an SFP Module
Figure 2-45
Connecting to an SFP Module Port
0 SERIES
13
13X
86550
23X
14
15
16
17
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2024X 21
22
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23
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LC connector
Step 5
Caution
If necessary, reconfigure and restart the switch or target device.
For detailed instructions on removing the SFP modules, see your SFP
documentation.
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Switch Installation
Connecting to an SFP Module
Connecting to 1000BASE-T SFP Modules
Follow these steps to connect a Category 5 cable to a 1000BASE-T SFP module:
To prevent ESD damage, follow your normal board and component handling
procedures.
Caution
When connecting to servers, workstations, and routers, insert a four twisted-pair,
straight-through cable in the RJ-45 connector. When connecting to switches or
repeaters, insert a four twisted-pair, crossover cable.
Step 1
When connecting to a 1000BASE-T device, be sure to use a four twisted-pair,
Category 5 cable.
Note
Figure 2-46
13
14
15
16
13X
Connecting to an SFP Module Port
17
18
19
20
21
22
23
Catalyst
24
3750 SERIE
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97348
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2
1
1
RJ-45 connector
Step 2
Insert the other cable end in an RJ-45 connector on a target device.
Step 3
Observe the port status LED.
The LED turns green when the switch and the target device have an established
link.
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Switch Installation
Connecting to a XENPAK Module
The LED turns amber while the STP discovers the network topology and searches
for loops. This process takes about 30 seconds, and then the port LED turns green.
If the LED is off, the target device might not be turned on, there might be a cable
problem, or there might be problem with the adapter installed in the target device.
See Chapter 3, “Troubleshooting,” for solutions to cabling problems.
Step 4
If necessary, reconfigure and restart the switch or target device.
Connecting to a XENPAK Module
Follow these steps to connect a fiber-optic cable to a XENPAK module:
Warning
Class 1 laser product. Statement 1008
Caution
Do not remove the rubber plugs from the XENPAK module ports or the rubber
caps from the fiber-optic cable until you are ready to connect the cable. The plugs
and caps protect the XENPAK module ports and cables from contamination and
ambient light.
Note
The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet
module ports in the switch software documentation.
Note
Make sure that the XENPAK module is fully inserted into the module slot and that
the captive installation screws are fully tightened before attaching the fiber-optic
interface cable connector to the XENPAK module connector.
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Chapter 2
Switch Installation
Connecting to a XENPAK Module
Step 1
Remove the rubber plugs from the XENPAK module ports and fiber-optic cable,
and store them for future use.
Step 2
Align the fiber-optic cable SC connector with the XENPAK module connector, so
that transmit (TX) on the cable meets receive (RX) on the XENPAK module
connector, and RX on the cable meets TX on the XENPAK module.
Step 3
Insert the fiber-optic cable connector into the XENPAK module ports (see
Figure 2-47).
Step 4
Insert the other cable end into a fiber-optic receptacle on a target device.
Step 5
Observe the XENPAK module port status LED.
The LED turns green when the switch and the target device have an established
link.
The LED turns amber while the STP discovers the network topology and searches
for loops. This process takes about 30 seconds, and then the port LED turns green.
If the LED is off, the target device might not be turned on, there might be a cable
problem, or there might be problem with the adapter installed in the target device.
See Chapter 3, “Troubleshooting,” for solutions to cabling problems.
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Chapter 2
Switch Installation
Connecting to a XENPAK Module
Figure 2-47
Connecting to a XENPAK Module Port
Catalyst 37
50 series
1
RX
1
1
104575
TX
SC connector
Step 6
If necessary, reconfigure and restart the switch or target device.
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Chapter 2
Switch Installation
Where to Go Next
Where to Go Next
If the default configuration is satisfactory, the switch does not need further
configuration. You can use any of these management options to change the default
configuration:
•
Start the device manager, which is in the switch memory, to manage
individual and standalone switches. This is an easy-to-use web interface that
offers quick configuration and monitoring. You can access the device
manager from anywhere in your network through a web browser. For more
information, see the device manager online help.
•
Start the Network Assistant application, which is described in the Getting
Started with Cisco Network Assistant guide. Through this GUI, you can
configure and monitor a switch cluster or an individual switch.
•
Use the CLI to configure the switch as a member of a cluster or as an
individual switch from the console. See the Catalyst 3750 Switch Command
Reference on Cisco.com for information on using the CLI with a
Catalyst 3750 switch.
•
Start an SNMP application such as the CiscoView application.
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Chapter 2
Switch Installation
Where to Go Next
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C H A P T E R
3
Troubleshooting
The LEDs on the front panel provide troubleshooting information about the
switch. They show failures in the power-on self-test (POST), port-connectivity
problems, and overall switch performance. For a full description of the switch
LEDs, see the “LEDs” section on page 1-15.
You can also get statistics from the browser interface, from the command-line
interface (CLI), or from a Simple Network Management Protocol (SNMP)
workstation. See the software configuration guide, the switch command reference
guide on Cisco.com, or the documentation that came with your SNMP application
for details.
This chapter describes these topics for troubleshooting problems:
•
Understanding POST Results, page 3-1
•
Replacing a Failed Stack Member, page 3-8
Understanding POST Results
As the switch powers on, it begins the power-on self-test (POST), a series of tests
that runs automatically to ensure that the switch functions properly. POST lasts
approximately 1 minute.
When the switch begins POST, the System, the RPS, the Master, the Status, the
Duplex, the Speed, and the Stack LEDs turn green. (On the Power over Ethernet
[PoE] Catalyst 3750 switches, the PoE LED also turns green as POST begins.)
The System LED flashes green, and the other LEDs remain continuous green.
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Chapter 3
Troubleshooting
Understanding POST Results
When POST completes successfully, the System LED remains green. The RPS
LED remains green for some time and then returns to its operating status. The
other LEDs turn off and return to their operating status.
Note
For information on operating status for the LEDs, go to the “LEDs” section on
page 1-15.
Note
POST failures are usually fatal. Call Cisco Systems if your switch does not pass
POST.
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Chapter 3
Troubleshooting
Diagnosing Problems
Diagnosing Problems
The LEDs on the front panel provide troubleshooting information about the
switch. They show POST failures, port-connectivity problems, and overall switch
performance. For a full description of the switch LEDs, see the “LEDs” section
on page 1-15.
You can also get statistics from the browser interface, from the CLI, or from an
SNMP workstation. See the software configuration guide, the switch command
reference guide on Cisco.com, or the documentation that came with your SNMP
application for details.
You can access the Technical Support Website
(http://www.cisco.com/techsupport) for a list of known hardware problems and
extensive troubleshooting documentation including:
•
Field notices
•
Security advisories
•
Troubleshooting resources
•
Factory defaults
•
Password recovery
•
Recovery from corrupted or missing software
•
Switch port problems
•
Network interface cards
•
Troubleshooting tools
Common switch problems fall into these categories:
•
Poor performance
•
No connectivity
•
Corrupted software
Table 3-1 describes how to detect and resolve these problems.
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Chapter 3
Troubleshooting
Diagnosing Problems
Table 3-1
Common Problems and Solutions
Symptom
Possible Cause
Resolution
Poor performance or excessive
errors
Duplex autonegotiation mismatch.
See the switch software
configuration guide for
information on identifying
autonegotiation mismatches.
Verify that the autonegotiation
settings are the same at both
ends.
Cabling distance exceeded
•
Port statistics show excessive
frame check sequence (FCS),
late-collision, or alignment
errors.
•
For 10/100 and
10/100/1000BASE-T
connections:
– The distance between the
•
See the switch software
configuration guide for
information on displaying
port statistics.
•
Reduce the cable length to
within the recommended
distances.
•
See your repeater
documentation for cabling
guidelines.
•
See your XENPAK or SFP
module documentation for
cabling guidelines.
port and the attached device
exceeds 328 feet (100
meters).
– If the switch is attached to a
repeater, the total distance
between the two end
stations exceeds the cabling
guidelines.
•
XENPAK or SFP module
cabling guidelines exceeded.
Bad adapter in attached device
•
Excessive errors found in port
statistics.
•
Run adapter card diagnostic
utility.
•
STP checking for possible
loops.
•
Wait 30 seconds for the port
LED to turn green.
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Chapter 3
Troubleshooting
Diagnosing Problems
Table 3-1
Common Problems and Solutions (continued)
Symptom
Possible Cause
Resolution
No connectivity
Incorrect or bad cable
These are results of no link at both
ends:
•
A crossover cable was used
when a straight-through was
required, or the reverse.
•
For the correct pinouts and
the proper application of
crossover instead of
straight-through cables, see
the “Two Twisted-Pair
Cable Pinouts” section on
page B-5.
•
Enable the automatic
medium-dependentinterface crossover
(Auto-MDIX) feature.
Note
Many legacy powered
devices, including older
Cisco IP phones and
access points that do not
fully support IEEE
802.3af, might not
support PoE when
connected to the
switches by a crossover
cable.
•
The cable is wired incorrectly.
•
Replace with a tested good
cable.
•
A crossover or straight-through
cable is wired incorrectly.
•
For 1000BASE-T
connections, be sure to use
a twisted four-pair,
Category 5 cable.
•
STP checking for possible
loops.
•
Wait 30 seconds for the port
LED to turn green.
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Chapter 3
Troubleshooting
Diagnosing Problems
Table 3-1
Common Problems and Solutions (continued)
Symptom
Possible Cause
Resolution
Unreadable characters on the
management console
Incorrect baud rate.
Reset the emulation software to
9600 baud.
Amber system LED
Fatal POST error detected.
Contact Cisco Systems.
Switch port in error-disabled
state after SFP module or
XENPAK module inserted
Bad or non-Cisco-approved SFP
module or XENPAK module.
Remove the SFP module or
XENPAK module from the
switch, and replace it with a
Cisco-approved module. Use the
errdisable recovery cause
gbic-invalid global
configuration command to
verify the port status, and enter a
time interval to recover from the
error-disable state.
See the switch command
reference guide for information
on the errdisable recovery
command.
Powered device connected to
PoE port, but no power given
Switch might not have enough power Use the Mode button to show the
capacity to deliver PoE to a new
PoE status for all ports.
powered device.
• If the port status LED is
alternating green and
amber, connect the powered
device to an external AC
power source.
PoE might be disabled on switch
port.
•
Note
If the port status LED is
amber, configure the switch
port PoE setting to Auto.
PoE is enabled by
default.
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Chapter 3
Troubleshooting
Diagnosing Problems
Table 3-1
Common Problems and Solutions (continued)
Symptom
Possible Cause
PoE mode LED blinks amber
At least one PoE port has a fault, or Use the Mode button to show the
power has been denied to at least one PoE status for all ports. The
of the PoE ports.
affected port LEDs blink amber
or alternate green and amber.
Note
When the PoE mode
is selected, a green
PoE LED means that
the port status LEDs
show the PoE status.
Caution
Resolution
PoE faults are caused
when noncompliant
cabling or powered
devices are connected to a
PoE port. Only
standard-compliant
cabling can be used to
connect Cisco
pre-standard IP Phones
and wireless access points
or IEEE
802.3af-compliant
devices to PoE ports. A
cable or device that causes
a PoE fault must be
removed from the
network.
If a port LED blinks amber,
there is a PoE fault. A cable or
device that causes a PoE fault
must be removed from the
network.
If a port status LED is
alternating green and amber,
connect the powered device to
an external AC power source.
Note
You can also use the
device manager or CLI
to search for PoE faults.
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Chapter 3
Troubleshooting
Replacing a Failed Stack Member
Table 3-1
Common Problems and Solutions (continued)
Symptom
Possible Cause
Resolution
SFP module or XENPAK module
not recognized
The SFP module or XENPAK
module might be installed upside
down.
Verify that the SFP module or
XENPAK module is not
installed upside down.
The SFP module or XENPAK
module does not snap into the slot.
Remove the SFP module or
XENPAK module. Inspect for
physical damage to the
connector, the module, and the
module slot.
Replace the SFP module or
XENPAK module with a known
good module.
No stack link between switches
or high error rate between
switches in the stack
Poor cable connection.
Secure the thumb screws on the
StackWise cables. See
Figure 2-34.
Bad StackWise cable or damaged
StackWise port.
Remove the StackWise cable,
and inspect the cable and
StackWise port for bent pins or
damaged connectors.
If the StackWise cable is bad,
replace it with a known good
cable.
Replacing a Failed Stack Member
If you need to replace a failed stack member, you can hot swap or replace the
switch by following this procedure:
Step 1
Get a replacement switch that has the same model number as the failed switch.
Step 2
Power down the failed switch.
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Chapter 3
Troubleshooting
Replacing a Failed Stack Member
Step 3
Make sure the replacement switch is powered off, and then connect the
replacement switch to the stack.
Note
If you had manually set the member numbers for any members in the
stack, you need to manually assign the replacement switch the same
member number as the failed switch. To assign the member number
manually, see the switch software configuration guide.
Step 4
Make the same Ethernet and Gigabit Ethernet connections on the replacement
switch (as were on the failed switch).
Step 5
Power on the replacement switch.
The replacement switch will have the same configuration for all the interfaces as
the failed switch and will function the same as the failed switch.
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Chapter 3
Troubleshooting
Replacing a Failed Stack Member
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A P P E N D I X
A
Technical Specifications
This appendix lists the switch technical specifications in Table A-1 through
Table A-12.
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A-1
Appendix A
Table A-1
Technical Specifications
Specifications for the Catalyst 3750G-12S Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
1.2 A to 0.6 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
120 W, 409 BTUs per hour
Power rating
0.120 kVA
@13 A
Physical Dimensions
Weight
10 lb (4.6 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 12.8 in. (4.4 x 44.5 x 32.6 cm)
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Appendix A
Technical Specifications
Table A-2
Specifications for the Catalyst 3750-24TS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
1.2 A to 0.6 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
50 W, 171 BTUs per hour
Power rating
0.083 kVA
@8.5 A
Physical Dimensions
Weight
8 lb (3.6 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 11.8 in. (4.4 x 44.5 x 30.1 cm)
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Appendix A
Table A-3
Technical Specifications
Specifications for the Catalyst 3750G-24T Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
1.6 A to 0.9 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
165 W, 563 BTUs per hour
Power rating
0.165 kVA
@13 A
Physical Dimensions
Weight
10 lb (4.6 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 12.8 in. (4.4 x 44.5 x 32.6 cm)
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Appendix A
Technical Specifications
Table A-4
Specifications for the Catalyst 3750-24PS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
5.5 A to 2.8 A, 50 to 60 Hz
DC input voltage for RPS
675
+ 12 V
Power consumption
495 W
Power dissipation
125 W, 426 BTUs per hour
Power rating
0.495 kVA
@7.5 A and – 48 V
@7.8 A
Power over Ethernet
15.4 W per port maximum, 370 W switch maximum
Physical Dimensions
Weight
11.3 lb (5.1 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 11.8 in. (4.4 x 44.5 x 30.1 cm)
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A-5
Appendix A
Table A-5
Technical Specifications
Specifications for the Catalyst 3750G-24PS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
8 A to 4 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
520 W
Power dissipation
170 W, 534 BTUs per hour
Power rating
0.52 kVA
@14 A and – 48 V
@7.8 A
Power over Ethernet
Range from 4.0 to 15.4 W per port, up to 370 W switch maximum
Physical Dimensions
Weight
13.5 lb (6.1 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 14.9 in. (4.4 x 44.5 x 37.8 cm)
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Appendix A
Technical Specifications
Table A-6
Specifications for the Catalyst 3750-48PS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
5.5 A to 2.8 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
540 W
Power dissipation
170 W, 580 BTUs per hour
Power rating
0.54 kVA
@7.5 A and – 48 V
@7.8 A
Power over Ethernet
Range from 4.0 to 15.4 W per port, up to 370 W switch maximum
Physical Dimensions
Weight
13.2 lb (6 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 14.8 in. (4.4 x 44.5 x 37.8 cm)
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Appendix A
Table A-7
Technical Specifications
Specifications for the Catalyst 3750G-48PS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
8 A to 4 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
560 W
Power dissipation
220 W, 690 BTUs per hour
Power rating
0.56 kVA
@14 A and – 48 V
@7.8 A
Power over Ethernet
Range from 4.0 to 15.4 W per port, up to 370 W switch maximum
Physical Dimensions
Weight
15.5 lb (7 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 16.1 in. (4.4 x 44.5 x 40.9 cm)
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Appendix A
Technical Specifications
Table A-8
Specifications for the Catalyst 3750G-16TD Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
1.6 A to 0.9 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
180 W, 615 BTUs per hour
Power rating
0.180 kVA
@17 A
Physical Dimensions
Weight
12.5 lb (5.7 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 16.1 in. (4.4 x 44.5 x 40.9 cm)
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A-9
Appendix A
Table A-9
Technical Specifications
Specifications for the Catalyst 3750G-24TS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
2.3 A to 1.5 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
190 W, 650 BTUs per hour
Power rating
0.190 kVA
@17 A
Physical Dimensions
Weight
12.5 lb (5.7 kg)
Dimensions (H x D x W) 2.59 x 17.5 x 11.6 in. (6.6 x 44.5 x 29.5 cm)
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Appendix A
Technical Specifications
Table A-10
Specifications for the Catalyst 3750G-24TS-1U Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
3 A to 1.5 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
100 W
Power dissipation
100 W, 314 BTUs per hour
Power rating
0.10 kVA
@10.5 A
Physical Dimensions
Weight
12 lb (5.5 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 14.9 in. (4.4 x 44.5 x 37.8 cm)
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Appendix A
Table A-11
Technical Specifications
Specifications for the Catalyst 3750-48TS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
1.2 A to 0.6 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
75 W, 256 BTUs per hour
Power rating
0.075 kVA
@8.5 A
Physical Dimensions
Weight
9.1 lb (4.1 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 11.8 in. (4.4 x 44.5 x 30.1 cm)
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Appendix A
Technical Specifications
Table A-12
Specifications for the Catalyst 3750G-48TS Switch
Environmental Ranges
Operating temperature
32 to 113°F (0 to 45°C)
Storage temperature
–13 to 158°F (–25 to 70°C)
Relative humidity
10 to 85% (noncondensing)
Operating altitude
Up to 10,000 ft (3049 m)
Storage altitude
Up to 15,000 ft (4573 m)
Power Requirements
AC input voltage
100 to 240 VAC (autoranging)
3 A to 1.5 A, 50 to 60 Hz
DC input voltages for
RPS 675
+ 12 V
Power consumption
160 W
Power dissipation
160 W, 500 BTUs per hour
Power rating
0.16 kVA
@17.5 A
Physical Dimensions
Weight
14 lb (6.4 kg)
Dimensions (H x D x W) 1.73 x 17.5 x 16.1 in. (4.4 x 44.5 x 40.9 cm)
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Appendix A
Technical Specifications
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A P P E N D I X
B
Connector and Cable Specifications
This appendix describes the Catalyst 3750 switch ports and the cables and
adapters that you use to connect the switch to other devices.
Connector Specifications
These sections describe the connectors used with the Catalyst 3750 switches.
Catalyst 3750 Switch Hardware Installation Guide
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B-1
Appendix B
Connector and Cable Specifications
Connector Specifications
10/100 and 10/100 /1000 Ports
The 10/100 and 10/100/1000 Ethernet ports on Catalyst 3750 switches use
standard RJ-45 connectors and Ethernet pinouts with internal crossovers.
Figure B-2 and Figure B-1 show the pinouts.
10/100 Port Pinouts
Label
1
RD+
2
RD-
3
TD+
4
NC
5
NC
6
TD-
7
NC
8
NC
Figure B-2
1 2 3 4 5 6 7 8
H5318
Pin
10/100/1000 Port Pinouts
Pin
Label
1
TP0+
2
TP0-
3
TP1+
4
TP2+
5
TP2-
6
TP1-
7
TP3+
8
TP3-
1 2 3 4 5 6 7 8
60915
Figure B-1
Catalyst 3750 Switch Hardware Installation Guide
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Appendix B
Connector and Cable Specifications
Connector Specifications
SFP Module Ports
The Catalyst 3750 switch uses SFP modules for fiber-optic and copper uplink
ports. See the Catalyst 3750 release notes for a list of supported SFP modules.
Fiber-Optic SFP Module LC Connector
58476
Figure B-3
Invisible laser radiation may be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical instruments.
Figure B-4
Copper SFP Module RJ-45 Connector
Pin
Label
1
TP0+
2
TP0-
3
TP1+
4
TP2+
5
TP2-
6
TP1-
7
TP3+
8
TP3-
1 2 3 4 5 6 7 8
60915
Warning
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Appendix B
Connector and Cable Specifications
Connector Specifications
XENPAK Module Ports
The Catalyst 3750G-16TD switch uses XENPAK modules for 10-Gigabit
fiber-optic connections to networks. See the Catalyst 3750 release notes for a list
of supported XENPAK modules. Fiber-optic XENPAK modules use SC
connectors, as shown in Figure B-5.
Fiber-Optic XENPAK Module SC Connector
H8707
Figure B-5
Tx
Warning
Rx
Invisible laser radiation may be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical instruments.
Console Port
The console port uses an 8-pin RJ-45 connector, which is described in Table B-1
and Table B-2. The supplied RJ-45-to-DB-9 adapter cable is used to connect the
console port of the switch to a console PC. You need to provide a RJ-45-to-DB-25
female DTE adapter if you want to connect the switch console port to a terminal.
You can order a kit (part number ACS-DSBUASYN=) containing that adapter
from Cisco. For console port and adapter pinout information, see Table B-1 and
Table B-2.
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Appendix B
Connector and Cable Specifications
Cable and Adapter Specifications
Cable and Adapter Specifications
These sections describe the cables and adapters used with Catalyst 3750 switches.
Two Twisted-Pair Cable Pinouts
Figure B-6 and Figure B-7 show the schematics of two twisted-pair cables for
10/100 ports.
Two Twisted-Pair Straight-Through Cable Schematic
Router or PC
3 TD+
6 TD–
3 RD+
6 RD–
1 RD+
2 RD–
1 TD+
2 TD–
Figure B-7
H5578
Switch
Two Twisted-Pair Crossover Cable Schematic
Switch
Switch
3 TD+
6 TD–
3 TD+
6 TD–
1 RD+
2 RD–
1 RD+
2 RD–
H5579
Figure B-6
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Appendix B
Connector and Cable Specifications
Cable and Adapter Specifications
Four Twisted-Pair Cable Pinouts for 10/100 Ports
Figure B-8 and Figure B-9 show the schematics of four twisted-pair cables for
10/100 ports.
Router or PC
1 RD+
1 TD+
2 RD-
2 TD-
3 TD+
3 RD+
6 TD-
6 RD-
4 NC
4 NC
5 NC
5 NC
7 NC
7 NC
8 NC
8 NC
Figure B-9
65271
Switch
Four Twisted-Pair Straight-Through Cable Schematic for
10/100 Ports
Four Twisted-Pair Crossover Cable Schematic for 10/100 Ports
Switch
Switch
1 RD+
1 RD+
2 RD-
2 RD-
3 TD+
3 TD+
6 TD-
6 TD-
4 NC
4 NC
5 NC
5 NC
7 NC
7 NC
8 NC
8 NC
65273
Figure B-8
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Appendix B
Connector and Cable Specifications
Cable and Adapter Specifications
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports
Figure B-10 and Figure B-11 show the schematics of four twisted-pair cables for
10/100/1000 ports on Catalyst 3750 switches.
Switch
Router or PC
1 TPO+
1 TP1+
2 TPO-
2 TP1-
3 TP1+
3 TPO+
6 TP1-
6 TPO-
4 TP2+
4 TP3+
5 TP2-
5 TP3-
7 TP3+
7 TP2+
8 TP3-
8 TP2-
Figure B-11
65272
Four Twisted-Pair Straight-Through Cable Schematic for
10/100/1000 Ports
Four Twisted-Pair Crossover Cable Schematics for 10/100/1000
and 1000BASE-T SFP Module Ports
Switch
Switch
1 TPO+
1 TP0+
2 TPO-
2 TP0-
3 TP1+
3 TP1+
6 TP1-
6 TP1-
4 TP2+
4 TP2+
5 TP2-
5 TP2-
7 TP3+
7 TP3+
8 TP3-
8 TP3-
65274
Figure B-10
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Appendix B
Connector and Cable Specifications
Cable and Adapter Specifications
Crossover Cable and Adapter Pinouts
This section describes how to identify a crossover cable and also describes the
adapter pinouts.
Identifying a Crossover Cable
To identify a crossover cable, compare the two modular ends of the cable. Hold
the cable ends 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 wire connected
to the pin on the outside of the right plug. (See Figure B-12.)
Figure B-12
Identifying a Crossover Cable
Pin 1 on one connector and
pin 8 on the other connector
should be the same color.
Pin 8
H10632
Pin 1
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Appendix B
Connector and Cable Specifications
Cable and Adapter Specifications
Note
You can use the mdix auto interface configuration command in the CLI to enable
the automatic medium-dependent interface crossover (Auto-MDIX) feature.
When the Auto-MDIX feature is enabled, the switch detects the required cable
type for copper Ethernet connections and configures the interfaces accordingly.
Therefore, you can use either a crossover or a straight-through cable for
connections to a copper 10/100, 10/100/1000, or 1000BASE-T SFP module port
on the switch, regardless of the type of device on the other end of the connection.
The Auto-MDIX feature is enabled by default on switches running Cisco IOS
Release 12.2(18)SE or later. For releases between Cisco IOS
Release 12.1(14)EA1 and 12.2(18)SE, the Auto-MDIX feature is disabled by
default. For configuration information for this feature, see the switch software
configuration guide or the switch command reference.
Adapter Pinouts
Table B-1 lists the pinouts for the console port, the RJ-45-to-DB-9 adapter cable,
and the console device.
Table B-1
Console Port Signaling Using a DB-9 Adapter
Switch
Console
Port (DTE)
RJ-45-to-DB-9
Terminal Adapter
Console
Device
Signal
DB-9 Pin
Signal
RTS
8
CTS
DTR
6
DSR
TxD
2
RxD
GND
5
GND
GND
5
GND
RxD
3
TxD
DSR
4
DTR
CTS
7
RTS
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Appendix B
Connector and Cable Specifications
Cable and Adapter Specifications
Table B-2 lists the pinouts for the console port, RJ-45-to-DB-25 female DTE
adapter, and the console device.
Note
The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You can
order a kit (part number ACS-DSBUASYN=) containing this adapter from Cisco.
Table B-2
Console Port Signaling Using a DB-25 Adapter
Switch
Console
Port (DTE)
RJ-45-to-DB-25
Terminal Adapter
Console
Device
Signal
DB-25 Pin
Signal
RTS
5
CTS
DTR
6
DSR
TxD
3
RxD
GND
7
GND
GND
7
GND
RxD
2
TxD
DSR
20
DTR
CTS
4
RTS
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A P P E N D I X
C
Configuring the Switch with the
CLI-Based Setup Program
This appendix provides a CLI-based setup procedure for a standalone switch or a
switch stack. Before connecting the switch to a power source, review the safety
warnings in Chapter 2, “Switch Installation.”
Note
For detailed installation procedures on rack-mounting your switch, stacking your
switches, or connecting to small form-factor pluggable (SFP) or XENPAK
modules, see Chapter 2, “Switch Installation.” For product overview information,
see Chapter 1, “Product Overview.”
These steps describe how to do a simple installation:
1.
Accessing the CLI, page C-2
2.
Taking Out What You Need, page C-4
3.
Stacking the Switches (Optional), page C-5
4.
Connecting to the Console Port, page C-7
5.
Starting the Terminal Emulation Software, page C-9
6.
Connecting to a Power Source, page C-9
7.
Entering the Initial Configuration Information, page C-11
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Accessing the CLI
Accessing the CLI
For an unconfigured switch, you can access the CLI through Express Setup or
through the console port.
Accessing the CLI Through Express Setup
Note
Express Setup is supported on switches running Cisco IOS Release 12.1(14)EA1
or later. If you are installing a new switch, see the Cisco IOS release label on the
rear panel of the switch to determine the release.
For switches running releases earlier than Cisco IOS Release 12.1(14)EA1, go to
the “Taking Out What You Need” section on page C-4.
You can access the CLI on an unconfigured switch by placing the switch in
Express Setup mode and then connecting an Ethernet port of the switch to the
Ethernet port of your PC or workstation. To put the switch into Express Setup
mode, follow the steps described in the Catalyst 3750 Switch Getting Started
Guide for powering on the switch and using Express Setup.
After the switch is in Express Setup mode, use Telnet to connect to the switch by
using the IP address 10.0.0.1, and enter the setup user EXEC command. See these
sections in this chapter to then configure the switch by using the CLI:
•
Entering the Initial Configuration Information, page C-11
•
Completing the Setup Program, page C-11
After you have entered the configuration information for the switch, save it to
flash memory by using the write memory privileged EXEC command.
Note
While in Express Setup mode, the IP address 10.0.0.1 remains active on the switch
until you enter the write memory command. You lose the Telnet connection after
entering the write memory command.
For more information about using the CLI, see the command reference for this
release.
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Accessing the CLI
Accessing the CLI Through the Console Port
You can access the CLI on a configured or unconfigured switch by connecting the
console port of the switch to the serial port on your PC or workstation and
accessing the switch through a Telnet session.
To access the switch through the console port, follow these steps:
•
“Taking Out What You Need” section on page C-4.
•
“Connecting to the Console Port” section on page C-7
•
“Starting the Terminal Emulation Software” section on page C-9
•
“Connecting to a Power Source” section on page C-9
•
“Entering the Initial Configuration Information” section on page C-11
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Taking Out What You Need
Taking Out What You Need
Remove the items shown in Figure C-1 from the shipping container:
Figure C-1
1
SYST
RPS
MASTR
STAT
DUPLX
SPEED
STACK
The Catalyst 3750 Switch, Adapter Cable, AC Power Cord, and
the StackWise Cable
1
1X
MODE
2
3
4
5
6
7
8
9
10
11
12
11X
13
13X
2X
14
15
16
17
18
19
20
21
22
23
24
23X
12X
Catalyst
3750 SERIES
14X
24X
2
3
90533
4
1
Catalyst 3750 switch
3
AC power cord
2
RJ-45-to-DB-9 adapter cable
4
StackWise cable (optional)
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Stacking the Switches (Optional)
Note
You need to provide the Category 5 straight-through cables to connect the switch
ports to other Ethernet devices.
Note
You can use the mdix auto interface configuration command in the CLI to enable
the automatic medium-dependent interface crossover (Auto-MDIX) feature.
When the Auto-MDIX feature is enabled, the switch detects the required cable
type for copper Ethernet connections and configures the interfaces accordingly.
Therefore, you can use either a crossover or a straight-through cable for
connections to a copper 10/100, 10/100/1000, or 1000BASE-T SFP module port
on the switch, regardless of the type of device on the other end of the connection.
The Auto-MDIX feature is enabled by default on switches running Cisco IOS
Release 12.2(18)SE or later. For releases between Cisco IOS
Release 12.1(14)EA1 and 12.2(18)SE, the Auto-MDIX feature is disabled by
default. For configuration information for this feature, see the switch software
configuration guide or the switch command reference.
Stacking the Switches (Optional)
You can stack up to nine switches by using the StackWise cables and ports to
connect the switches.
Read the “Planning the Stack” section on page 2-11 before you stack your
switches.
Figure C-2
Stacking the Switches
CONSOLE
RATIN
100-20 G
0V ~
1.6A-0
>9A, 50-60
DC INPUT
S
POWE FOR REMO
R SUPP
TE
SPECIFIED
LY
+12v IN MANUAL
@8.5a
HZ
CONSOLE
RATIN
100-20 G
0V ~
1.6A-0
>9A, 50-60
DC INPUT
S
POWE FOR REMO
R SUPP
TE
SPECIFIED
LY
+12v IN MANUAL
@8.5a
HZ
CONSOLE
DC INPUT
S
POWE FOR REMO
R SUPP
TE
SPECIFIED
LY
+12v IN MANUAL
@8.5a
HZ
90529
RATIN
100-20 G
0V ~
1.6A-0
>9A, 50-60
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Stacking the Switches (Optional)
Step 1
Insert one end of the StackWise cable into the StackWise port at the back of a
switch. See Figure C-3.
Note
Always use a Cisco-approved StackWise cable to connect the switches.
Step 2
Use the window in the StackWise cable to align the connector correctly. Secure
the screws tightly.
Step 3
Insert the other end of the cable into the connector of the other switch, and secure
the screws tightly.
See the “Connecting StackWise Cable to StackWise Ports” section on page 2-35
for detailed installation procedures on how to connect the switches in a stack.
Figure C-3
Connecting the StackWise Cable to a StackWise Port
1
STACK
2
CONSO
LE
90530
STACK
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Connecting to the Console Port
Connecting to the Console Port
You can use the console port to perform the initial configuration. To connect the
switch console port to a PC, use the supplied RJ-45-to-DB-9 adapter cable.
Note
If you have stacked your switches, connect to the console port of one of the
switches in the stack. The initial configuration for the entire stack can be
performed on any switch in the stack.
Follow these steps to connect the PC or terminal to the switch:
Step 1
Using the supplied RJ-45-to-DB-9 adapter cable, insert the RJ-45 connector into
the console port on the rear of a switch, as shown in Figure C-4.
Step 2
Attach the DB-9 female DTE of the adapter cable to a PC’s serial port, or attach
an appropriate adapter to the terminal.
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Connecting to the Console Port
Figure C-4
Connecting a Switch to a PC
1
CONSOLE
RATIN
100-20 G
0V ~
1.6A-0
>9A, 50-60
DC INPUT
S
POWE FOR REMO
R SUPP
TE
SPECIFIED
LY
+12v IN MANUAL
@8.5a
HZ
CONSOLE
RATIN
100-20 G
0V ~
1.6A-0
>9A, 50-60
DC INPUT
S
POWE FOR REMO
R SUPP
TE
SPECIFIED
LY
+12v IN MANUAL
@8.5a
HZ
CONSOLE
RATIN
100-20 G
0V ~
1.6A-0
>9A, 50-60
DC INPUT
S
POWE FOR REMO
R SUPP
TE
SPECIFIED
LY
+12v IN MANUAL
@8.5a
HZ
3
90531
2
1 Catalyst 3750 switches
3
RJ-45-to-DB-9 adapter cable
2 Power cord
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Starting the Terminal Emulation Software
Starting the Terminal Emulation Software
Before you power on the switch, start the terminal emulation session so that you
can see the output display from the power-on self-test (POST).
The terminal-emulation software—frequently a PC application such as
Hyperterminal or ProcommPlus—makes communication between the switch and
your PC or terminal possible.
Step 1
Start the terminal-emulation program if you are using a PC or terminal.
Step 2
Start a terminal-emulation session.
Step 3
Configure the baud rate and character format of the PC or terminal to match these
console port default characteristics:
•
9600 baud
•
8 data bits
•
1 stop bit
•
No parity
•
None (flow control)
Connecting to a Power Source
Follow these steps to connect to a power source:
Step 1
Connect one end of the supplied AC power cord to the power connector on a
switch rear panel. See Figure C-4.
Step 2
Connect the other end of the power cable to a grounded AC outlet.
Step 3
(Optional) If you have a stack, power on all the switches in the stack.
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Connecting to a Power Source
Note
Note
If you have stacked your switches, see the “Powering Considerations”
section on page 2-12 for more information.
If you are connecting the switch to a Cisco redundant power system (RPS), see
the documentation that shipped with your RPS.
As the switch powers on, it begins the power-on self-test (POST), a series of tests
that runs automatically to ensure that the switch functions properly. POST lasts
approximately 1 minute.
When the switch begins POST, the System, the RPS, the Master, the Status, the
Duplex, the Speed, and the Stack LEDs turn green. (On the Power over Ethernet
[PoE] switches, the PoE LED also turns green as POST begins.) The System LED
flashes green, and the other LEDs remain continuous green.
When POST completes successfully, the System LED remains green. The RPS
LED remains green for some time and then returns to its operating status. The
other LEDs turn off and return to their operating status.
Note
POST failures are usually fatal. Call Cisco Systems if your switch does not pass
POST.
After you have powered all the switches in the stack, a switch is elected as the
stack master. The master LED is green on the stack master switch.
If you started the terminal emulation program before you powered on your switch,
the PC or terminal displays the bootloader sequence. You need to press Enter to
display the setup program prompt.
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
Entering the Initial Configuration Information
To set up the switch, you need to complete the setup program, which runs
automatically after the switch is powered up. You must assign an IP address and
other configuration information necessary for the switch to communicate with the
local routers and the Internet. This information is also required if you plan to use
the Network Assistant to configure and manage the switch.
IP Settings
You will need this information from your network administrator before you
complete the setup program:
•
Switch IP address
•
Subnet mask (IP netmask)
•
Default gateway (router)
•
Enable secret password
•
Enable password
•
Telnet password
Completing the Setup Program
Note
If your switches are stacked and there are multiple console connections to
individual switches in the stack, the initial setup dialog appears in the first console
where the user presses Enter.
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
Follow these steps to complete the setup program and to create an initial
configuration for the switch:
Step 1
Enter Yes at the following two prompts.
Would you like to enter the initial configuration dialog? [yes/no]:
yes
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 '[]'.
Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the system.
Would you like to enter basic management setup? [yes/no]: yes
Step 2
Enter a host name for the switch, and press Return.
On a command switch, the host name is limited to 28 characters; on a member
switch to 31 characters. Do not use -n, where n is a number, as the last character
in a host name for any switch.
Enter host name [Switch]: host_name
Step 3
Enter an enable secret password, and press Return.
The password can be from 1 to 25 alphanumeric characters, can start with a
number, is case sensitive, allows spaces, but ignores leading spaces. The secret
password is encrypted and the enable password is in plain text.
Enter enable secret: secret_password
Step 4
Enter an enable password, and press Return.
Enter enable password: enable_password
Step 5
Enter a virtual terminal (Telnet) password, and press Return.
The password can be from 1 to 25 alphanumeric characters, is case sensitive,
allows spaces, but ignores leading spaces.
Enter virtual terminal password: terminal-password
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
Step 6
(Optional) Configure Simple Network Management Protocol (SNMP) by
responding to the prompts. You can also configure SNMP later through the CLI,
the device manager, or the Network Assistant application. To configure SNMP
later type no.
Configure SNMP Network Management? [no]: no
Step 7
Enter the interface name (physical interface or VLAN name) of the interface that
connects to the management network, and press Return. For this release, always
use vlan1 as that interface.
Enter interface name used to connect to the
management network from the above interface summary: vlan1
Step 8
Configure the interface by entering the switch IP address and subnet mask and
pressing Return. The IP address and subnet masks shown below are examples.
Configuring interface vlan1:
Configure IP on this interface? [yes]: yes
IP address for this interface: 10.4.120.106
Subnet mask for this interface [255.0.0.0]: 255.0.0.0
Step 9
Enter Y to configure the switch as the cluster command switch. Enter N to
configure it as a member switch or as a standalone switch.
If you enter N, the switch appears as a candidate switch in the Network Assistant
GUI. You can configure the switch as a command switch later through the CLI,
the device manager, or the Network Assistant application. To configure it later,
enter no.
Would you like to enable as a cluster command switch? [yes/no]: no
You have now completed the initial configuration of the switch and the switch
displays its initial configuration. This is an example of output that appears:
The following configuration command script was created:
hostname switch1
enable secret 5 $1$Ulq8$DlA/OiaEbl90WcBPd9cOn1
enable password enable_password
line vty 0 15
password terminal-password
no snmp-server
!
no ip routing
!
interface Vlan1
no shutdown
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Appendix C
Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
ip address 10.4.120.106 255.0.0.0
!
interface FastEthernet1/0/1
!
interface FastEthernet1/0/2
interface FastEthernet1/0/3
!
...<output abbreviated>
!
interface GigabitEthernet2/0/28
!
end
Step 10
These choices are displayed:
[0] Go to the IOS command prompt without saving this config.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.
If you want to save the configuration and use it the next time the switch reboots,
save it in nonvolatile RAM (NVRAM) by selecting option 2.
Enter your selection [2]:2
Make your selection, and press Return.
After you complete the setup program, the switch can run the default
configuration that you created. If you want to change this configuration or want
to perform other management tasks, use one of these tools:
•
Command-line interface (CLI)
•
Network Assistant (for one or more switches)
To use the CLI, enter commands at the Switch> prompt through the console port
by using a terminal program or through the network by using telnet. For
configuration information, see the switch software configuration guide or the
switch command reference.
To use the Network Assistant, see the Getting Started with Cisco Network
Assistant guide on Cisco.com.
Catalyst 3750 Switch Hardware Installation Guide
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I N D EX
specifications A-2 to A-12
Numerics
adapter pinouts, terminal
10/100/1000 ports
RJ-45-to-DB-25 B-10
cable lengths 2-6
RJ-45-to-DB-9 B-9
connecting to 2-48
altitude, operating and storage A-2 to A-12
described 1-11
autonegotiation 1-11
illustrated 1-4
numbering 1-4
pinouts B-2
recommended cables 2-49
10/100 ports
B
brackets
See mounting brackets
cable lengths 2-6
connecting to 2-48
described 1-11
C
illustrated 1-4
cable guide, attaching 2-29
numbering 1-4
cable lengths 2-6
pinouts B-2
cables
recommended cables 2-49
19- and 24-inch racks 2-16
crossover
four twisted-pair pinout, 10/100 ports B-6
four twisted-pair pinout, 1000BASE-T
ports B-7
A
AC power
connecting to 2-9
identifying B-8
two twisted-pair pinout, 10/100 ports B-5
recommended 2-49
connector 1-28
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
IN-1
Index
SFP module
to console port B-4
1000BASE-T module 2-55
to SFP modules 2-52 to 2-56
fiber-optic module 2-53
to XENPAK modules 2-56 to 2-58
straight-through
connecting to the console port C-7
four twisted-pair pinout, 10/100 ports B-6
connection procedures 2-48 to 2-58
four twisted-pair pinout, 1000BASE-T
ports B-7
connectivity problems, solving 3-3
two twisted-pair pinout, 10/100 ports B-5
cabling
connectors and cables
console port B-4 to B-10
power (AC and RPS) 1-28
10/100/1000 ports 2-48
10/100 ports 1-13, 2-48
considerations 2-12
pinouts B-5
StackWise cables
cable numbers 1-27
connecting to 2-35
cautions xvi
SC connectors B-3
SFP module ports B-3
XENPAK module ports B-4
console port
connecting to C-7
connectors and cables B-4 to B-10
described 1-29
conventions, document xvi
Cisco enhanced power negotiation 1-12
Cisco IP Phones, connecting to 1-12, 2-50
Cisco RPS
crossover cable B-8 to B-10
connecting to
1000BASE-T SFP module ports 2-55
See RPS
connectivity problems 3-5
CiscoView 1-30
CLI 1-29
pinout
four twisted-pair, 1000BASE-T ports B-7
accessing by using Express Setup C-2
four twisted-pair 10/100 ports B-6
accessing through console port C-3
command-line interface
See CLI
connecting
to 10/100/1000 ports 2-48
to 10/100 ports 2-48
Catalyst 3750 Switch Hardware Installation Guide
IN-2
OL-6336-01
Index
D
H
DC power
HP OpenView 1-30
RPS 1-3
humidity, relative A-2 to A-12
Device Manager xxiv, 1-29
to configure switch 2-59
diagnosing problems 3-3
dimensions A-2 to A-12
I
installation
document conventions xvi
assigning the IP Address C-11
duplex LED 1-19
connecting to a power source C-9
rack-mounting 2-16 to 2-35
site requirements 2-6
E
stacking the switches
electrical noise, avoiding 2-8
See also stacking
Express Setup
starting the terminal emulation software C-9
table or shelf-mounting 2-34
accessing CLI by using C-2
wall mounting 2-31
See also procedures
F
installing SFP modules 2-39 to 2-41
features 1-1 to 1-3
installing XENPAK modules 2-43 to 2-46
front panel
IOS command-line interface 1-29
10/100 ports 1-11
clearance 2-7
description 1-4 to 1-10
LEDs 1-15 to 1-23
L
LEDs
SFP module ports 1-14 to 1-15
color meanings 1-19
XENPAK module ports 1-3, 1-15
duplex 1-19
front panel 1-16 to 1-17
interpreting 1-19
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
IN-3
Index
master 1-19
P
port 1-19 to 1-23
port mode 1-19 to 1-23
packing list 2-8
POST results 3-2
performance problems, solving 3-3
Power over Ethernet 1-20
pinouts
RPS 1-18 to 1-19
10/100/1000 ports B-2
speed 1-20
10/100 ports B-2
stack 1-23
adapters B-8 to B-10
STATUS 1-19
console port B-10
system 1-18
crossover cable B-8
troubleshooting with 3-3
crossover cables
four twisted-pair, 1000BASE-T ports B-7
four twisted-pair 10/100 ports B-6
M
two twisted-pair 10/100 ports B-5
mode button 1-15
RJ-45-to-DB-25 terminal adapter B-10
mounting, table or shelf 2-34
RJ-45-to-DB-9 terminal adapter B-9
mounting, wall mounting 2-31
SFP module ports B-3
mounting brackets
straight-through cables
attaching 2-19 to 2-27
four twisted-pair 10/100 ports B-6
rack-mount 2-27
four twisted-pair 1000BASE-T ports B-7
two twisted-pair 10/100 ports B-5
PoE
N
high-powered devices 1-12
Network Assistant 1-29
LED 1-20
getting started guide xxiv
port LEDs 1-19 to 1-23
to configure switch 2-59
port modes
noise, electrical 2-8
changing 1-15
LEDs 1-19
See also mode button
Catalyst 3750 Switch Hardware Installation Guide
IN-4
OL-6336-01
Index
ports
R
10/100 1-11
pinouts B-2
rack-mounting 2-16 to 2-35
recommended cables 2-49
rear panel
clearance 2-7
10/100/1000 1-11
description 1-25 to 1-29
pinouts B-2
recommended cables 2-49
redundant power supply
See RPS
numbering of 10/100 1-11
numbering of 10/100/1000 1-11
removing SFP modules 2-41 to 2-42
numbering of SFP module ports 1-8 to 1-10
removing XENPAK modules 2-46
POST
RJ-45 connector, console port B-4
LEDs 3-2
RJ-45 console port 1-25
results 3-1
RPS
connecting to 2-9
running at powerup 2-10, 3-1, C-10
connector 1-28
power
LED 1-18 to 1-19
connecting to 2-9
connectors 1-25, 1-28
specifications A-2 to A-12
power on 2-9
Power over Ethernet
LED 1-20
power supply
AC power outlet 1-28
RPS connector 1-28
procedures
connection 2-48 to 2-58
installation 2-16 to 2-34
publications, related xxiv
S
safety 2-2
SC connector B-3
SFP modules
1000BASE-T
supported speeds 1-22
bale-clasp latch
removal 2-41
connecting to 2-52 to 2-56
connectors B-3
described 1-14 to 1-15
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
IN-5
Index
installation 2-39 to 2-41
temperature, operating A-1 to A-13
shelf-mounting 2-34
terminal emulation software C-9
Simple Network Management Protocol
troubleshooting 3-1 to 3-6
See SNMP
SNMP network management platforms 1-30
software switch management 1-29
W
specifications A-1 to A-13
wall mounting 2-31
stacking
warnings
cabling considerations 2-12
defined xvi
connecting to a StackWise port 2-11
installation 2-2
examples 2-11
planning considerations 2-11
powering considerations 2-12
X
StackWise ports 1-27
XENPAK modules 1-3, 1-15
straight-through cable
connecting to 2-56 to 2-58
pinout
installation 2-43 to 2-46
four twisted-pair 10/100 ports B-6
removal 2-46
four twisted-pair 1000BASE-T ports B-7
two twisted-pair 10/100 ports B-5
SunNet Manager 1-30
switch powering on 2-9
system LED 1-18
T
table-mounting 2-34
technical specifications A-1 to A-13
telco racks 2-16
Telnet, and accessing the CLI 1-29
Catalyst 3750 Switch Hardware Installation Guide
IN-6
OL-6336-01
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