Cisco Systems Catalyst 2955 Installation Manual Switch Hardware Guide (full Book In PDF Format)

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2015-01-05

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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
Catalyst 2955 Hardware Installation
Guide
November 2004
Customer Order Number: DOC-7814944=
Text Part Number: 78-14944-03
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
PROVIDEDAS 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.
Catalyst 2955 Hardware Installation Guide
Copyright © 2003-2005 Cisco Systems, Inc. All rights reserved.
CCSP, the Cisco Square Bridge logo, Follow Me Browsing, 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 Access Registrar, 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, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare,
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,
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. (0411R)
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CONTENTS
Cisco Limited 5-Year Hardware and 1-Year Software Warranty Terms xiii
Preface xvii
Audience xvii
Purpose xvii
Conventions xviii
Related Publications xxvi
Obtaining Documentation xxvi
Cisco.com xxvii
Documentation DVD xxvii
Ordering Documentation xxvii
Documentation Feedback xxviii
Cisco Product Security Overview xxviii
Reporting Security Problems in Cisco Products xxix
Obtaining Technical Assistance xxx
Cisco Technical Support Website xxx
Submitting a Service Request xxxi
Definitions of Service Request Severity xxxi
Obtaining Additional Publications and Information xxxii
CHAPTER
1Configuring the Switch with the CLI-Based Setup Program 1-1
Taking Out What You Need 1-2
Connecting to a Power Source 1-2
Connecting to the Console Port 1-4
Contents
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Starting the Terminal-Emulation Software 1-5
Entering the Initial Configuration Information 1-6
IP Settings 1-7
Completing the Setup Program 1-7
CHAPTER
2Overview 2-1
Features 2-1
Front-Panel Description 2-3
Warning Labels 2-5
10/100 Ports 2-6
10/100/1000 Ports 2-7
100BASE-FX Ports 2-8
100BASE-LX Ports 2-8
Power and Relay Connector 2-8
Console Port 2-10
LEDs 2-10
Power Status LEDs 2-12
10/100 Port Status LEDs 2-13
Uplink Port Status LEDs 2-14
Alarm Relay LEDs 2-16
Rear-Panel Description 2-17
Catalyst 2955 Switch Power Converter 2-17
Management Options 2-19
CHAPTER
3Installation 3-1
Preparing for Installation 3-2
Warnings 3-2
EMC Regulatory Statements 3-6
U.S.A. 3-6
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Contents
Class A Notice for Taiwan and Other Traditional Chinese Markets 3-6
VCCI Class A Notice for Japan 3-7
Class A Warning for Korea 3-7
Class A Warning for Hungary 3-8
Installation Guidelines 3-8
Verifying Package Contents 3-9
Applying the Switch Protective Liner 3-10
Verifying Switch Operation 3-11
Connecting a PC or a Terminal to the Console Port 3-11
Powering On the Switch and Running POST 3-13
Grounding the Switch 3-15
Wiring the DC Power Source 3-17
Add the Ferrite to the Power and Relay Connector Wiring 3-24
Attach the Power and Relay Connector to the Switch 3-25
Power On the Switch 3-27
Running POST 3-27
Connecting the Switch to the Power Converter 3-29
Installing the Power Converter on a DIN Rail 3-30
Connecting the Power Converter to the Power and Relay Connector 3-32
Connecting the Power Converter to an AC Power Source 3-35
Preparing the AC Power Cord 3-35
Connecting the AC Power Cord to the Power Converter 3-37
Connecting the Power Converter to a DC Power Source 3-41
Applying Power to the Power Converter 3-46
Removing the Power Converter from a DIN Rail 3-46
Wiring the External Alarm Device Relays 3-48
Installing the Switch on a DIN Rail 3-52
Installing the Switch in a Rack 3-57
Removing the Switch from a DIN Rail or a Rack 3-59
Contents
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Connecting to 10/100 and 10/100/1000 Ports 3-62
Connecting to 100BASE-FX MM Ports 3-65
Connecting to 100BASE-LX SM Ports 3-67
Where to Go Next 3-69
CHAPTER
4Installation in a Hazardous Environment 4-1
Preparing for Installation 4-2
Warnings 4-2
EMC Regulatory Statements 4-8
U.S.A. 4-8
Class A Notice for Taiwan and Other Traditional Chinese Markets 4-8
VCCI Class A Notice for Japan 4-9
Class A Warning for Korea 4-9
Class A Warning for Hungary 4-10
European Zone 2 Certification 4-10
Installation Guidelines 4-11
Verifying Package Contents 4-12
Applying the Switch Protective Liner 4-13
Verifying Switch Operation 4-14
Connecting a PC or a Terminal to the Console Port 4-14
Powering On the Switch and Running POST 4-16
Grounding the Switch 4-18
Wiring the DC Power Source 4-21
Add the Ferrite to the Power and Relay Connector Wiring 4-27
Attach the Power and Relay Connector to the Switch 4-28
Power On the Switch 4-30
Running POST 4-30
Wiring the External Alarm Device Relays 4-32
Installing the Switch on a DIN Rail 4-37
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Contents
Installing the Switch in a Rack 4-42
Removing the Switch from a DIN Rail or a Rack 4-45
Connecting to 10/100 and 10/100/1000 Ports 4-47
Connecting to 100BASE-FX MM Ports 4-50
Connecting to 100BASE-LX SM Ports 4-52
Where to Go Next 4-54
CHAPTER
5Troubleshooting 5-1
Understanding POST Results 5-2
Diagnosing Problems 5-3
APPENDIX
ATechnical Specifications A-1
APPENDIX
BConnectors and Cables B-1
Connector Specifications B-1
10/100 and 10/100 /1000 Ports B-2
100BASE-FX Ports B-3
100BASE-LX Ports B-3
Power and Relay Connector B-4
Console Port B-5
Cable and Adapter Specifications B-5
Two Twisted-Pair Cable Pinouts B-6
Four Twisted-Pair Cable Pinouts for 10/100 Ports B-6
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports B-8
Cable and Adapter Pinouts B-9
Connecting to a PC B-9
Connecting to a Terminal B-10
Identifying a Crossover Cable B-11
Contents
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APPENDIX
CTranslated Safety Warnings C-1
Work During Lightning Activity C-1
Power and Relay Connector C-3
Switch Installation In Hazardous Location C-7
Safe Operating Voltage Range Warning C-9
Switch Relays Warning C-11
Remove Power Before Disconnecting C-15
“Open Type” Equipment C-18
Grounded Equipment C-22
Console Cable Connection C-24
Overtemperature Warning C-27
Class I, Division 2, Hazardous Location C-29
Twisted-pair Supply Wires C-32
Pollution Degree 2 Industrial Environment C-33
Port Connection C-35
Installation Instructions C-38
Service Personnel Warning C-39
Stacking the Chassis Warning C-41
Ground Connection Warning C-42
SELV-IEC 60950 DC Power Supply C-44
Jewelry Removal Warning C-45
Product Disposal Warning C-47
Class 1 Laser Product C-49
Class 1 LED Product C-50
Laser Radiation C-52
Laser Viewing Warning C-54
Laser Beam Exposure C-56
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Contents
Chassis Warning for Rack-Mounting and Servicing C-58
Grounded Equipment Warning C-66
Qualified Personnel Warning C-68
Restricted Area C-69
Chassis Power Connection C-72
Exposed DC Power Wire Warning C-75
I
NDEX
Contents
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Cisco Limited 5-Year Hardware and
1-Year Software 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 warranties and license agreements applicable to Cisco software, is
available on Cisco.com. Follow these steps to access and download the Cisco
Information Packet and your warranty and license agreements from 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 78-5235-03A0 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).
Cisco Limited 5-Year Hardware and 1-Year Software Warranty Terms
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Note You must have Adobe Acrobat Reader to view and print PDF
files. You can download the reader from Adobes website:
http://www.adobe.com
3. To read translated and localized warranty information about your product,
follow these steps:
a. Enter this part number in the Warranty Document Number field:
78-13712-01C0
b. Select the language in which you would like to read 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
Five (5) Years
Duration of Software Warranty
One (1) Year
Replacement, Repair, or Refund Policy for Hardware
Cisco or its service center will use commercially reasonable efforts to ship a
replacement part for delivery within fifteen (15) working days after receipt of the
defective product at Ciscos site. Actual delivery times of replacement products
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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Cisco Limited 5-Year Hardware and 1-Year Software Warranty Terms
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
Cisco Limited 5-Year Hardware and 1-Year Software Warranty Terms
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Preface
Audience
This guide is for the networking or computer technician responsible for installing
a Catalyst 2955 switch, hereafter referred to as the switch. We assume that you are
familiar with the concepts and terminology of Ethernet and local area networking.
Purpose
This guide describes the hardware features of Catalyst 2955 switch. It describes
the physical and performance characteristics of the switch, explains how to install
a switch, and provides troubleshooting information.
This guide does not describe how to configure software features on your switch
or describe the Catalyst 2955-specific system messages that you might encounter.
It also does not provide information about command-line interface (CLI)
commands that have been created or changed for use by the switch. For more
information, see the software configuration, the system message, and the
command reference guides for the switch.
Preface
Conventions
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Conventions
This publication uses these conventions and symbols for notes, cautions, and
warnings:
Note Means reader take note. Notes contain helpful suggestions or references to
materials not contained in this manual.
Caution Means reader be careful. In this situation, you might do something that could
result in equipment damage or loss of data.
Warning
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause
bodily injury. Before you work on any equipment, be aware of the hazards
involved with electrical circuitry and be familiar with standard practices for
preventing accidents. Use the statement number provided at the end of each
warning to locate its translation in the translated safety warnings that
accompanied this device.
Statement 1071
SAVE THESE INSTRUCTIONS
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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Preface
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.
Preface
Conventions
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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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Preface
Conventions
¡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
Preface
Conventions
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Conventions
Preface
Conventions
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Conventions
Preface
Related Publications
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Related Publications
These documents provide complete information about the switch and are available
from this URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/index.htm
You can order printed copies of documents with a DOC-xxxxxx= number from the
Cisco.com sites and from the telephone numbers listed in the Ordering
Documentation section on page xxvii.
Release Notes for the Catalyst 2950 and 2955 Switches (not orderable but is
available on Cisco.com)
Note Switch requirements and procedures for initial configurations and software
upgrades tend to change and therefore appear only in the release notes. Before
installing, configuring, or upgrading the switch, see the release notes on
Cisco.com for the latest information.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
(order number DOC-7811380=)
Catalyst 2950 and Catalyst 2955 Switch Command Reference (order number
DOC-7811381=)
Catalyst 2950 and Catalyst 2955 Switch System Message Guide
(order number DOC-7814233=)
Catalyst 2950 Switch Hardware Installation Guide (not orderable but
available on Cisco.com)
Device manager online help (available on the switch)
Getting Started with Cisco Network Assistant (not orderable but available on
Cisco.com)
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.
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Preface
Obtaining Documentation
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation DVD
Cisco documentation and additional literature are available in a Documentation
DVD package, which may have shipped with your product. The Documentation
DVD is updated regularly and may be more current than printed documentation.
The Documentation DVD package is available as a single unit.
Registered Cisco.com users (Cisco direct customers) can order a Cisco
Documentation DVD (product number DOC-DOCDVD=) from the Ordering tool
or Cisco Marketplace.
Cisco Ordering tool:
http://www.cisco.com/en/US/partner/ordering/
Cisco Marketplace:
http://www.cisco.com/go/marketplace/
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
Preface
Documentation Feedback
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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/
Nonregistered Cisco.com users can order documentation through a local
account representative by calling Cisco Systems Corporate Headquarters
(California, USA) at 408 526-7208 or, elsewhere in North America, by
calling 1 800 553-NETS (6387).
Documentation Feedback
You can send comments about technical documentation to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front
cover of your document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.ht
ml
From this site, you can perform these tasks:
Report security vulnerabilities in Cisco products.
Obtain assistance with security incidents that involve Cisco products.
Register to receive security information from Cisco.
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Preface
Cisco Product Security Overview
A current list of security advisories and notices for Cisco products is available at
this URL:
http://www.cisco.com/go/psirt
If you prefer to see advisories and notices as they are updated in real time, you
can access a Product Security Incident Response Team Really Simple Syndication
(PSIRT RSS) feed from this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally
before we release them, and we strive to correct all vulnerabilities quickly. If you
think that you might have identified a vulnerability in a Cisco product, contact
PSIRT:
Emergenciessecurity-alert@cisco.com
Nonemergenciespsirt@cisco.com
Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product to
encrypt any sensitive information that you send to Cisco. PSIRT can work from
encrypted information that is compatible with PGP versions 2.x through 8.x.
Never use a revoked or an expired encryption key. The correct public key to use
in your correspondence with PSIRT is the one that has the most recent creation
date in this public key server list:
http://pgp.mit.edu:11371/pks/lookup?search=psirt%40cisco.com&op=index&ex
act=on
In an emergency, you can also reach PSIRT by telephone:
1 877 228-7302
1 408 525-6532
Preface
Obtaining Technical Assistance
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Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco
service contracts, Cisco Technical Support provides 24-hour-a-day,
award-winning technical assistance. The Cisco Technical Support Website on
Cisco.com features extensive online support resources. In addition, Cisco
Technical Assistance Center (TAC) engineers provide telephone support. If you
do not hold a valid Cisco service contract, contact your reseller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for
troubleshooting and resolving technical issues with Cisco products and
technologies. The website is available 24 hours a day, 365 days a year, at this
URL:
http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support Website requires a Cisco.com
user ID and password. If you have a valid service contract but do not have a user
ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Note Use the Cisco Product Identification (CPI) tool to locate your product serial
number before submitting a web or phone request for service. You can access the
CPI tool from the Cisco Technical Support Website by clicking the Tools &
Resources link under Documentation & Tools. Choose Cisco Product
Identification Tool from the Alphabetical Index drop-down list, or click the
Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool
offers three search options: by product ID or model name; by tree view; or for
certain products, by copying and pasting show command output. Search results
show an illustration of your product with the serial number label location
highlighted. Locate the serial number label on your product and record the
information before placing a service call.
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Obtaining Technical Assistance
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4
service requests. (S3 and S4 service requests are those in which your network is
minimally impaired or for which you require product information.) After you
describe your situation, the TAC Service Request Tool provides recommended
solutions. If your issue is not resolved using the recommended resources, your
service request is assigned to a Cisco TAC engineer. The TAC Service Request
Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, contact the
Cisco TAC by telephone. (S1 or S2 service requests are those in which your
production network is down or severely degraded.) Cisco TAC engineers are
assigned immediately to S1 and S2 service requests to help keep your business
operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447
For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has
established severity definitions.
Severity 1 (S1)Your network is down, or there is a critical impact to your
business operations. You and Cisco will commit all necessary resources around
the clock to resolve the situation.
Severity 2 (S2)Operation of an existing network is severely degraded, or
significant aspects of your business operation are negatively affected by
inadequate performance of Cisco products. You and Cisco will commit full-time
resources during normal business hours to resolve the situation.
Preface
Obtaining Additional Publications and Information
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Severity 3 (S3)Operational performance of your network is impaired, but most
business operations remain functional. You and Cisco will commit resources
during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)You require information or assistance with Cisco product
capabilities, installation, or configuration. There is little or no effect on your
business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is
available from various online and printed sources.
Cisco Marketplace provides a variety of Cisco books, reference guides, and
logo merchandise. Visit Cisco Marketplace, the company store, at this URL:
http://www.cisco.com/go/marketplace/
Cisco Press publishes a wide range of general networking, training and
certification titles. Both new and experienced users will benefit from these
publications. For current Cisco Press titles and other information, go to Cisco
Press at this URL:
http://www.ciscopress.com
Packet magazine is the Cisco Systems technical user magazine for
maximizing Internet and networking investments. Each quarter, Packet
delivers coverage of the latest industry trends, technology breakthroughs, and
Cisco products and solutions, as well as network deployment and
troubleshooting tips, configuration examples, customer case studies,
certification and training information, and links to scores of in-depth online
resources. You can access Packet magazine at this URL:
http://www.cisco.com/packet
iQ Magazine is the quarterly publication from Cisco Systems designed to
help growing companies learn how they can use technology to increase
revenue, streamline their business, and expand services. The publication
identifies the challenges facing these companies and the technologies to help
solve them, using real-world case studies and business strategies to help
readers make sound technology investment decisions. You can access iQ
Magazine at this URL:
http://www.cisco.com/go/iqmagazine
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Preface
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:
http://www.cisco.com/ipj
World-class networking training is available from Cisco. You can view
current offerings at this URL:
http://www.cisco.com/en/US/learning/index.html
Preface
Obtaining Additional Publications and Information
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1
Configuring the Switch with the
CLI-Based Setup Program
This chapter provides a command-line interface (CLI)-based setup procedure for
a standalone switch. For product overview information, see Chapter 2,
Overview. Before connecting the switch to a power source, review the safety
warnings in Chapter 3, Installation. For procedures on connecting the switch to
a power source, rack-mounting your switch, or connecting to the Ethernet ports,
see Chapter 3, Installation.
Caution If you are installing your switch in a hazardous environment, review the safety
warnings in Chapter 4, Installation in a Hazardous Environment. For
installation procedures for a hazardous environment, see Chapter 4, Installation
in a Hazardous Environment.
These steps describe how to do a simple installation:
1. Taking Out What You Need, page 1-2
2. Connecting to the Console Port, page 1-4
3. Starting the Terminal-Emulation Software, page 1-5
4. Connecting to a Power Source, page 1-2
5. Entering the Initial Configuration Information, page 1-6
Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Taking Out What You Need
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Taking Out What You Need
Remove the items shown in Figure 1-1 from the shipping container:
Figure 1-1 Catalyst 2955 Switch and Adapter Cable
Note You need to provide the Category 5 straight-through cables to connect the switch
ports to other Ethernet devices.
Connecting to a Power Source
For instructions on connecting the Catalyst 2955 switch to direct current (DC)
power, see the Wiring the DC Power Source section on page 3-17. For
instructions on connecting the Catalyst 2955 switch to alternating current (AC) or
DC power by using the optional power converter, see the Connecting the Switch
to the Power Converter section on page 3-29.
After the power is applied, the switch automatically begins POST, a series of tests
that verifies that the switch functions properly.
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Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Connecting to a Power Source
Note The uplink port status LEDs provide system and status information during POST.
On the Catalyst 2955C-12 and 2955S-12, the uplink ports are labeled 13 and 14.
On the Catalyst 2955T-12, the uplink ports are labeled 1 and 2.
When the Catalyst 2955C-12 and 2955S-12 begin POST:
Uplink port 13 LED is amber.
Uplink port 14 LED blinks green.
When the Catalyst 2955T-12 begins POST:
Uplink port 1 LED is amber.
Uplink port 2 LED blinks green.
If POST completes successfully on the Catalyst 2955C-12 and 2955S-12:
Uplink port 13 LED turns green.
Uplink port 14 LED goes off during the flash file system initialization.
If POST completes successfully on the Catalyst 2955T-12:
Uplink port 1 LED turns green.
Uplink port 2 LED goes off during the flash file system initialization.
If POST fails on the Catalyst 2955C-12 and 2955S-12:
Uplink port 13 LED blinks amber.
Uplink port 14 LED turns green.
If POST fails on the Catalyst 2955T-12:
Uplink port 1 LED blinks amber.
Uplink port 2 LED turns green.
Note POST failures are usually fatal. Call Cisco Systems immediately if your switch
does not pass POST. See the Obtaining Technical Assistance section on
page xxx.
Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Connecting to the Console Port
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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.
Warning
Do not connect or disconnect cables to the ports while power is applied to the
switch or any device on the network because an electrical arc can occur. This
could cause an explosion in hazardous location installations. Be sure that
power is removed from the switch and cannot be accidentally be turned on, or
verify that the area is nonhazardous before proceeding.
Statement 1070
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 1-2.
Step 2 Attach the DB-9 female DTE of the adapter cable to a PC serial port, or attach an
appropriate adapter to the terminal.
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Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Starting the Terminal-Emulation Software
Figure 1-2 Connecting a Switch to a PC
Starting the Terminal-Emulation Software
Before you power on the switch, start the terminal-emulation session on your PC
so that you can see the output display from the power-on self-test (POST).
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Entering the Initial Configuration Information
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Warning
If you connect or disconnect the console cable with power applied to the
switch or any device on the network, an electrical arc can occur. This could
cause an explosion in hazardous location installations. Be sure that power is
removed or the area is nonhazardous before proceeding.
To verify switch operation, perform POST on the switch in a nonhazardous
location before installation.
Statement 1065
The terminal-emulation softwarefrequently a PC application such as
Hyperterminal or ProcommPlusmakes communication between the switch and
your PC or terminal possible.
Follow these steps to start a terminal-emulation session:
Step 1 Start the terminal-emulation program if you are using a PC or terminal.
Step 2 Configure the baud rate and data 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)
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 on. 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.
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Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
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
Follow these steps to complete the setup program and to create an initial
configuration for the switch:
Step 1 Enter Ye s at these 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
Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
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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
Note The CLI issues a warning message if the enable secret and enable
passwords are the same.
You can override this warning by re-entering the password or by choosing
a different password for the enable secret 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
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, enter no.
Configure SNMP Network Management? [no]: no
Note For instructions on how to configure SNMP, see the switch software
configuration guide.
Step 7 Enter the interface name (physical interface or virtual local-area network
[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
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Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
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 that configuration. This is an example of the output that appears:
The following configuration command script was created:
hostname host_name
enable secret 5 $1$Max7$Qgr9eXBhtcBJw3KK7bc850
enable password my
line vty 0 15
password my_password
snmp-server community public
!
no ip routing
!
interface Vlan1
no shutdown
ip address 172.20.139.145 255.255.255.224
!
interface Vlan2
shutdown
no ip address
!
interface FastEthernet0/1
!
interface FastEthernet0/2
!
...<output abbreviated>
!!!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
Chapter 1 Configuring the Switch with the CLI-Based Setup Program
Entering the Initial Configuration Information
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!
end
Step 10 These choices appear:
[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-emulation 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.
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2
Overview
This chapter provides these topics that describe the Catalyst 2955 switch,
hereafter referred to as the switch.
Features, page 2-1
Front-Panel Description, page 2-3
Rear-Panel Description, page 2-17
Catalyst 2955 Switch Power Converter, page 2-17
Features
The Catalyst 2955 switch is a member of the Catalyst 2950 switch family.
Catalyst switches are a series of Ethernet switches that you can use to connect any
Ethernet-enabled devices.
The Catalyst 2955 switch is an Ethernet switch that mounts on a DIN rail in an
industrial enclosure as well as in a standard 19-inch rack. Its components are
designed to withstand extremes in temperature, vibration, and shock so that the
switch can be deployed in an industrial environment.
Note The Catalyst 2955 switch does not have cooling fans
See the switch software configuration guide for examples that show how you
might deploy the switches in your network.
Chapter 2 Overview
Features
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Figure 2-1 through Figure 2-3 show the Catalyst 2955 switches.
These are the switch features:
Hardware
Catalyst 2955T-12 switch12 10/100 ports and 2 10/100/1000BASE-T
ports
Catalyst 2955C-12 switch12 10/100 ports and 2 multimode (MM)
100BASE-FX ports
Catalyst 2955S-12 switch12 10/100 ports and 2 single-mode (SM)
100BASE-LX ports
Configuration
For 10/100BASE-TX ports, autonegotiates the speed and duplex settings
For 10/100/1000 BASE-T uplink ports, autonegotiates the speed and
supports half- and full-duplex operation at 10/100 Mbps and full-duplex
operation at 1000 Mbps
For 100BASE-FX multimode fiber-optic MM uplink ports, supports only
100-Mbps and full-duplex settings
For 100BASE-LX single-mode fiber-optic SM uplink ports, supports
only100-Mbps and full-duplex settings
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Chapter 2 Overview
Front-Panel Description
Front-Panel Description
The switch front panel contains the ports, the LEDs, and the power and relay cable
connector.
Figure 2-1 to Figure 2-3 show the switch front panels.
Figure 2-1 Catalyst 2955T-12 Switch
110/100/1000 uplink ports 410/100 ports
2Functional ground screw 5LEDs
3Power and relay connector
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Front-Panel Description
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Figure 2-2 Catalyst 2955C-12 Switch
1100BASE-FX uplink ports 410/100 ports
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Chapter 2 Overview
Front-Panel Description
Figure 2-3 Catalyst 2955S-12 Switch
Warning Labels
The laser safety warning label (as shown in Figure 2-4) is on the
Catalyst 2955C-12 and 2955S-12 switch front panels. The MM fiber-optic ports
on the Catalyst 2955C-12 are Class 1 LEDs. The SM fiber-optic uplink ports on
the Catalyst 2955S-12 are Class 1 laser products.
The laser safety warning label means that you should be careful when working
with fiber-optic ports and cabling. See Appendix C, Translated Safety Warnings
for more information about laser safety guidelines.
1100BASE-LX uplink ports 410/100 ports
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Front-Panel Description
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Figure 2-4 Laser Safety Warning Label
The hot surface warning label (shown in Figure 2-5) is on the Catalyst 2955C-12,
2955S-12, and 2955T-12 switch front panels. This label means that the surface of
the switch is hot. See Appendix C, Translated Safety Warnings, for more
information about proper handling guidelines for hot surfaces.
Figure 2-5 Hot Surface Warning Label
10/100 Ports
The 10/100 ports use RJ-45 connectors and twisted-pair cabling. The ports can
connect to these devices:
10BASE-T devices, such as workstations and hubs, through standard RJ-45
connectors and two twisted-pair cabling. You can use Category 3, 4, or 5
cabling.
100BASE-TX devices, such as high-speed workstations, servers, hubs,
routers, and other switches, through standard RJ-45 connectors and two or
four twisted-pair, Category 5 cabling.
Note When connecting the switch to workstations, servers, and routers, be sure that the
cable is a twisted-pair straight-through cable. When connecting the switch to hubs
or other switches, use a twisted-pair crossover cable. Pinouts for the cables are
described in Appendix B, Connectors and Cables.
The 10/100 ports can be set to operate in any combination of half duplex, full
duplex, 10 Mbps, or 100 Mbps. They can also be set for speed and duplex
autonegotiation, compliant with IEEE 802.3U. In all cases, the cable length from
a switch to an attached device cannot exceed 328 feet (100 meters).
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Chapter 2 Overview
Front-Panel Description
When set for autonegotiation, a port senses the speed and duplex settings of the
attached device and advertises its own capabilities. If the attached device supports
autonegotiation, the port negotiates the best connection (that is, the fastest line
speed that both devices support and full-duplex transmission, if the attached
device supports it) and configures itself accordingly.
10/100/1000 Ports
The 10/100/1000 uplink ports on the Catalyst 2955T-12 switch use RJ-45
connectors and twisted-pair cabling. The ports can connect to these devices:
10BASE-T devices, such as workstations and hubs, through standard RJ-45
connectors and two or four twisted-pair, Category 3, 4, or 5 cabling.
100BASE-TX devices, such as high-speed workstations, servers, hubs,
routers, and other switches, through standard RJ-45 connectors and two or
four twisted-pair, Category 5 cabling.
1000BASE-T devices, such as high-speed workstations, servers, hubs,
routers, and other switches, through standard RJ-45 connectors and four
twisted-pair, Category 5 cabling.
Note When connecting the switch to a 1000BASE-T device, be sure to use a four
twisted-pair, Category 5 cable.
Note When connecting the switch to workstations, servers, and routers, be sure to use
a twisted-pair straight-through cable. When connecting the switch to hubs or other
switches, use a twisted-pair crossover cable. Pinouts for the cables are described
in Appendix B, Connectors and Cables.
The 10/100/1000 ports on the Catalyst 2955T-12 switch can be set to operate at
10 or 100 Mbps at half- or full-duplex mode or 1000 Mbps in full-duplex mode.
They can also be set for speed autonegotiation, compliant with IEEE 802.3ab. In
all cases, the cable length from a switch to an attached device cannot exceed
328 feet (100 meters).
Chapter 2 Overview
Front-Panel Description
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100BASE-FX Ports
The 100BASE-FX ports on the Catalyst 2955C-12 use 50/125- or
62.5/125-micron MM fiber-optic cabling. In full-duplex mode, the MM
fiber-optic cable length from a switch to an attached device cannot exceed
6562 feet (2 kilometers).
For MM connections, you can connect a 100BASE-FX port to a port on a target
device by using one of the MT-RJ fiber-optic patch cables listed in Table B-1 on
page B-3. Use the Cisco part numbers in Table B-1 to order the patch cables that
you need.
100BASE-LX Ports
The 100BASE-LX ports on the Catalyst 2955S-12 use 9/125-micron SM
fiber-optic cabling. The cable length from a switch to an attached device cannot
exceed 9.375 miles (15 kilometers).
For SM connections, use one of the connectors listed in Table B-2 on page B-4.
Use the Cisco part numbers in Table B-2 to order the connectors that you need.
Power and Relay Connector
The power and relay connector provides wire connections to the switch for DC
power and configurable alarms (see Figure 2-6). The power and relay connector
is to the right of the uplink ports on the faceplate.
Figure 2-6 Power and Relay Connector
104353
RT A1 A2 VB
VA A1
A2 RT
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Chapter 2 Overview
Front-Panel Description
The connector is a pluggable-screw terminal block connector that provides power
and return connections for both the primary and secondary power supplies. The
positive DC power connection for power supply A is labeled VA, and the return
for power supply A is the adjacent connection labeled RT. For power supply B (the
redundant power supply), the positive DC power connection is labeled VB, and
the return is the adjacent connection labeled RT.
The Catalyst 2955 switch can operate with a single power supply or with dual
power supplies. In dual-power mode, the switch draws power from the power
supply with higher voltage. If the primary power supply fails in dual-power mode,
the alternate power supply gives power to the switch.
Warning
When you connect or disconnect the power and relay connector with power
applied, an electrical arc can occur. This could cause an explosion in
hazardous area installations. Be sure that power is removed from the switch
and alarm circuit. Be sure that power cannot be accidentally turned on or verify
that the area is nonhazardous before proceeding.
Failure to securely tighten the power and relay connector captive screws can
result in an electrical arc if the connector is accidentally removed.
Statement
1058
The power and relay connector provides an interface for two independent,
normally open (NO) alarm relays. The relays can be triggered by alarms for
environmental, power supply, and port status conditions. The relays can be
configured to send a fault signal to an external alarm device, such as a bell or a
light indicator. You can use the CLI to associate any alarm condition with a single
alarm relay or with both relays.
To connect an external alarm device to the relay, you must connect two relay
contact wires to complete an electrical circuit. Because each external alarm device
requires two connections to a relay, the Catalyst 2955 switch supports a maximum
of two external alarm devices.
Note See the switch configuration guide for instructions on how to configure the alarm
relays.
For more information about the power and relay connector, see Appendix B,
Connectors and Cables.
Chapter 2 Overview
Front-Panel Description
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Note You can get replacement power and relay connectors (PWR-2955-CONNECT=)
by calling Cisco Technical Support. See the Obtaining Technical Assistance
section on page xxx.
Console Port
You can connect a switch to a PC through the console port and the supplied
RJ-45-to-DB-9 adapter cable. If you want to connect a switch 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=) with that adapter from Cisco Systems. For
console-port and adapter-pinout information, see the Cable and Adapter
Specifications section on page B-5.
Warning
If you connect or disconnect the console cable with power applied to the
switch or any device on the network, an electrical arc can occur. This could
cause an explosion in hazardous location installations. Be sure that power is
removed or the area is nonhazardous before proceeding.
To verify switch operation, perform POST on the switch in a nonhazardous
location before installation.
Statement 1065
LEDs
You can use the LEDs to monitor switch activity and performance. The LEDs on
all Catalyst 2955 switches are on the bottom edge of the front panel. The LEDs
are visible in both face-up and parallel mounting configurations, as shown in
Figure 2-7 and Figure 2-8.
Note The 10/100 port status LEDs show port status only.
All LEDs are visible through the GUI management applicationsthe 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
CLI to configure and to monitor individual switches and switch clusters.
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Chapter 2 Overview
Front-Panel Description
Figure 2-7 LEDs on the Catalyst 2955T-12 Switch
110/100 port status LEDs 3Alarm relay LEDs
2Uplink port status LEDs 4Power supply LEDs
12x
11x
1x
2x
CISCO
CATALYST 2955
10Base-T/100Base-TX
34567
8
910 11 12
12AB
12
MAJ MIN
104910
1
24
3
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Front-Panel Description
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Figure 2-8 LEDs on Catalyst 2955C-12 and Catalyst 2955S-12 Switches
Power Status LEDs
The Catalyst 2955 switch can operate with one or two power supplies. Each power
supply input has an associated LED that shows the power supply status.
If the switch is in single-power mode and only power supply A is present and
functioning, the LED for power supply B is green, and the LED for power supply
A shows its status.
If the switch is in single-power mode and only power supply B is present and
functioning, the LED for power supply A is green, and the LED for power supply
B shows its status.
110/100 port status LEDs 3Alarm relay LEDs
2Uplink port status LEDs 4Power supply LEDs
12x
11x
1x
2x
CISCO
CATALYST 2955
10Base-T/100Base-TX
34567
8
910 11 12
12AB
13 14
MAJ MIN
104914
1
234
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Chapter 2 Overview
Front-Panel Description
In dual-power mode, the switch draws power from the power supply with the
higher voltage. If the primary power supply fails in dual-power mode, the
alternate power supply gives power to the switch.
The power status LEDs show whether the individual power supplies are receiving
power and functioning properly.
Table 2-1 lists the LED colors and meanings.
Note The power status LEDs show that power is not present on the switch if the power
input drops below 17 V. The power status LEDs only show that power is present
if the voltage at the switch input exceeds 18.5 V. The 1.5 V difference, or
hysteresis, ensures that the power status LEDs do not oscillate at values near 18 V.
In dual-power mode, the power status LEDs show status for both power inputs,
VA a n d VB .
For information about the power LED colors during the power-on self-test
(POST), see the Powering On the Switch and Running POST section on
page 3-13.
10/100 Port Status LEDs
Each 10/100 port has a port status LED, also called a port LED, shown in
Figure 2-7 and Figure 2-8. These LEDs display information about the switch and
the individual ports, shown in Table 2-2.
Table 2-1 Power Status LEDs
Color System Status
Off System is not powered up.
Green Power present on associated contact.
Red Power not present on associated contact.
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Uplink Port Status LEDs
The Catalyst 2955 switch has two uplink port status LEDs to the right of the port
status LEDs. On the Catalyst 2955C-12 and 2955S-12 switches, the fiber-optic
uplink port status LEDs are labeled 13 and 14 (see Figure 2-8). On the
Catalyst 2955T-12, the 10/100/1000BASE-T uplink ports are labeled 1 and 2 (see
Figure 2-7).
These LEDs display information about the switch and the individual uplink ports,
as shown in Table 2-3, Table 2-4, and Table 2-5.
Note The uplink port status LEDs provide system and status information during POST.
See the Powering On the Switch and Running POST section on page 3-13 for
more information about uplink port LED colors during POST.
Table 2-2 10/100 Port Status LEDs
Color System Status
Off No link.
Solid 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.
Solid amber Port is not forwarding. Port was disabled by management, an
address violation, or Spanning Tree Protocol (STP).
Note After a port is reconfigured, the port LED can remain
amber for up to 30 seconds while STP checks the
switch for possible loops.
Table 2-3 10/100/1000BASE-T Uplink Port Status LEDs
Color System Status
Off No link.
Solid green Link is present.
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Chapter 2 Overview
Front-Panel Description
Flashing green Activity. Port is transmitting or receiving data.
Alternating
green-amber
Link is faulty.
Solid amber Link is disabled.
Table 2-4 100BASE-FX MM Uplink Port Status LEDs
Color System Status
Off No link.
Solid green Link is present.
Flashing green Activity. Port is transmitting or receiving data.
Alternating
green-amber
Link is faulty.
Solid amber Link is disabled.
Table 2-5 100BASE-LX SM Uplink Port Status LEDs
Color System Status
Off No link.
Solid green Link is present.
Flashing green Activity. Port is transmitting or receiving data.
Alternating
green-amber
Link is faulty.
Solid amber Link is disabled.
Table 2-3 10/100/1000BASE-T Uplink Port Status LEDs (continued)
Color System Status
Chapter 2 Overview
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Alarm Relay LEDs
Two alarm relay LEDs labeled MAJ and MIN are to the right of the uplink port
status LEDs, as shown in Figure 2-7 and Figure 2-8. These LEDs reflect the state
of the major and minor system alarms.
You can use the Cisco IOS command-line interface (CLI) to configure the major
and minor LEDs to drive the relay contacts so that the connected external alarm
device state mirrors the alarm state of the major (MAJ) or minor (MIN) LED. You
can also use the CLI to associate port and global status alarms to one or both
relays. See the switch software configuration guide for details.
Warning
The switch relays are rated at 1 Amp and have a voltage limit of 30 VDC and 0.3
Amp at a voltage limit of 125 VAC. It is dangerous to exceed these limitations in
a hazardous environment.
An electrical arc can occur when you connect or disconnect the relay wires
with field side power applied. This could cause an explosion in switch
installations in a hazardous location. Before proceeding, be sure that power is
removed or the area is not hazardous.
Statement 1061
.
Table 2-6 lists the LED colors and meanings.
Note The minor LED is disabled by default.
Table 2-6 Alarm and Relay LEDs
LED Color Meaning
Major relay
(MAJ)
Off Environmental temperature is within normal range, or connected
alarm is not in a state of fault.
Red Environmental temperature exceeds maximum threshold, or
connected alarm is in a state of fault.
Minor relay
(MIN)
Off Connected alarm is not in a state of fault.
Red Connected alarm is in a state of fault.
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Chapter 2 Overview
Rear-Panel Description
Rear-Panel Description
The rear panel of the Catalyst 2955 switch has a DIN rail mounting clip assembly,
as shown in Figure 2-9.
The switch ships with the clip assembly installed on the rear panel, for a parallel
mounting configuration.
Figure 2-9 Catalyst 2955 Switch Rear Panel
Catalyst 2955 Switch Power Converter
The Catalyst 2955 switch can be used with an optional AC/DC power converter
in a nonhazardous environment. The power converter (PWR-2955-AC=) can
supply 24 VDC power in three modes110 V nominal AC, 220 V nominal AC,
and up to 375 VDC (see Table 3-2)to one or two Catalyst 2955 switches. The
power converter is mounted on a DIN rail.
For installation and connection procedures for the power converter, see the
Connecting the Switch to the Power Converter section on page 3-29.
1Catalyst 2955 switch rear panel 3DIN rail clip mounting screws
2DIN rail clip assembly
104560
32
1
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Catalyst 2955 Switch Power Converter
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Caution The power converter should only be used in a nonhazardous location installation.
Note The power converter (PWR-2955-AC=) is sold separately.
Figure 2-10 shows the power converter.
Figure 2-10 The Catalyst 2955 Switch AC/DC Power Converter
1DC positive
connections
4AC line
connection
2DC return
connections
5AC neutral
connection
3Earth ground
connection
DC ok
+
DC 24V/2.5A
AC Power Converter
PWR-2955-AC=
AC 115/230V 50-60Hz
N L
+
230V
97325
1 2
3
54
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Chapter 2 Overview
Management Options
Management Options
Catalyst 2955 switches offer these 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 the Catalyst 2950 switch to the Catalyst 4506 switch. 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. Device manager 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)
You can manage switches by using command-line entries. To access the CLI,
connect a PC or terminal directly to the console port on the switch. If the
switch is attached to your network, you can use a Telnet connection to
manage the switch from a remote location. For more information, see the
switch command reference.
CiscoView application
You can use the CiscoView device-management application to set
configuration parameters and to view switch status and performance
information. This application, which you purchase separately, can be a
standalone application or part of an Simple Network Management Protocol
(SNMP) network-management platform. For more information, see the
documentation that came with your CiscoView application.
Chapter 2 Overview
Management Options
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SNMP network management
You can manage switches by using an SNMP-compatible management station
running platforms such as HP OpenView and SunNet Manager. The switch
supports a comprehensive set of MIB extensions and MIB II, the
IEEE 802.1D bridge MIB, and four Remote Monitoring (RMON) groups. For
more information, see the documentation that came with your SNMP
application.
Cisco Intelligence Engine 2100 (IE2100)
The Cisco IE200 Series Configuration Registrar is a network management
device that works with embedded Cisco Networking Services (CNS) agents
in the switch software. You can automate initial configurations and
configuration updates by generating switch-specific configuration changes,
sending them to the switch, executing the configuration change, and logging
the results. For more information, see the switch software configuration guide
and the documentation that came with your application.
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3
Installation
This chapter describes how to install your switch, interpret the power-on self-test
(POST), and connect the switch to other devices.
Note If your installation is in a hazardous environment, see Chapter 4, Installation in
a Hazardous Environment, for instructions.
Read these topics, and perform the procedures in this order:
Preparing for Installation, page 3-2
Applying the Switch Protective Liner, page 3-10
Verifying Switch Operation, page 3-11
Connecting the Switch to the Power Converter, page 3-29
Wiring the External Alarm Device Relays, page 3-48
Installing the Switch on a DIN Rail, page 3-52
Installing the Switch in a Rack, page 3-57
Removing the Switch from a DIN Rail or a Rack, page 3-59
Connecting to 10/100 and 10/100/1000 Ports, page 3-62
Connecting to 100BASE-FX MM Ports, page 3-65
Connecting to 100BASE-LX SM Ports, page 3-67
Where to Go Next, page 3-69
Chapter 3 Installation
Preparing for Installation
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Preparing for Installation
This section provides information about these topics:
Warnings, page 3-2
EMC Regulatory Statements, page 3-6
Installation Guidelines, page 3-8
Verifying Package Contents, page 3-9
Warnings
These warnings are translated into several languages in Appendix C, Translated
Safety Warnings.
Warning
This equipment is to be installed and maintained by service personnel only as
defined by AS/NZS 3260 Clause 1.2.14.3 Service Personnel.
Statement 88
Warning
Only trained and qualified personnel should be allowed to install or replace this
equipment.
Statement 49
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
Warning
Read the installation instructions before you connect the system to its power
source.
Statement 1004
Warning
Do not stack the chassis on any other equipment. If the chassis falls, it can
cause severe bodily injury and equipment damage.
Statement 88
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Warning
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
publication 60664-1), and at altitudes up to 2000 meters without derating.
Statement 1068
Warning
This equipment is supplied as open type equipment. It must be mounted
within an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool.
The enclosure must meet IP 54 or NEMA type 4 minimum enclosure rating
standards.
Statement 1063
Warning
Connect the unit only to DC power source that complies with the safety
extra-low voltage (SELV) requirements in IEC 60950 based safety standards.
Statement 1033
Warning
Use twisted-pair supply wires suitable for 86°F (30°C) above surrounding
ambient temperature outside the enclosure.
Statement 1067
Warning
To prevent the switch from overheating, do not operate it in an area that
exceeds the maximum recommended ambient temperature of 140°F (60°C). To
prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around
the ventilation openings.
Statement 17C
Warning
When installing the unit, always make the ground connection first and
disconnect it last.
Statement 42
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Preparing for Installation
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Warning
This equipment is intended to be grounded. Ensure that the host is connected to
earth ground during normal use.
Statement 39
Warning
This equipment is intended to be grounded to comply with emission and
immunity requirements. Ensure that the switch functional ground lug is
connected to earth ground during normal use.
Statement 1064
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
Before performing any of the following procedures, ensure that power is
removed from the DC circuit. To ensure that all power is OFF, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the OFF position, and tape the switch handle of the circuit breaker in
the OFF position.
Statement 140
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
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Preparing for Installation
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector.
Statement 122
Warning
Do not work on the system or connect or disconnect cables during periods of
lightning activity.
Statement 1001
Warning
When used in a Class I, Division 2, hazardous location, this equipment must be
mounted in a suitable enclosure with proper wiring method, for all power, input
and output wiring, that complies with the governing electrical codes and in
accordance with the authority having jurisdiction over Class I, Division 2
installations.
Statement 1066
Warning
Ultimate disposal of this product should be handled according to all national
laws and regulations.
Statement 180
Warning
Class 1 laser product.
Statement 1008
Warning
Class 1 LED product.
Statement 1027
Warning
Invisible laser radiation may be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical instruments.
Statement 1051
Warning
For diverging beams, viewing the laser output with certain optical instruments
within a distance of 100 mm may harm your eyes. For collimated beams, viewing
the laser output with certain optical instruments designed for use at a distance
may harm your eyes.
Statement 282
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Preparing for Installation
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Warning
Avoid direct exposure to the laser beam.
Statement 1012
Caution This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D, or
non-hazardous locations only.
EMC Regulatory Statements
This section includes specific regulatory statements about the Catalyst 2955
family of switches.
U.S.A.
U.S. regulatory information for this product is in the front matter of this manual.
Class A Notice for Taiwan and Other Traditional Chinese Markets
Warning
This is a Class A Information Product, when used in residential environment,
it may cause radio frequency interference, under such circumstances, the
user may be requested to take appropriate countermeasures.
Statement 257
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VCCI Class A Notice for Japan
Class A Warning for Korea
Warning
This is a Class A product based on the standard of the Voluntary Control
Council for Interference by Information Technology Equipment (VCCI). If this
equipment is used in a domestic environment, radio disturbance may arise.
When such trouble occurs, the user may be required to take corrective
actions.
Statement 191
Warning
This is a Class A Device and is registered for EMC requirements for industrial
use. The seller or buyer should be aware of this. If this type was sold or
purchased by mistake, it should be replaced with a residential-use type.
Statement 294
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Preparing for Installation
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Class A Warning for Hungary
Installation Guidelines
When determining where to place the switch, observe these guidelines.
Before installing the switch, first verify that the switch is operational by
powering it on and running POST. Follow the procedures in the Powering On
the Switch and Running POST section on page 3-13.
For 10/100 ports and 10/100/1000 ports, the cable length from a switch to an
attached device cannot exceed 328 feet (100 meters).
For 100BASE-FX multimode fiber-optic (MM) ports, the cable length from a
switch to an attached device cannot exceed 6562 feet (2 kilometers).
For 100BASE-LX single-mode fiber-optic (SM) ports, the cable length from
a switch to an attached device cannot exceed 9.375 miles (15 kilometers).
Operating environment is within the ranges listed in Appendix A, Technical
Specifications.
Warning
This equipment is a class A product and should be used and installed properly
according to the Hungarian EMC Class A requirements (MSZEN55022). Class A
equipment is designed for typical commercial establishments for which
special conditions of installation and protection distance are used.
Statement
256
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Preparing for Installation
Clearance to front and rear panels meet these conditions:
Front-panel LEDs can be easily read.
Access to ports is sufficient for unrestricted cabling.
Front-panel direct current (DC) power and relay connector is within
reach of the connection to the DC power source.
Airflow around the switch and through the vents is unrestricted. To prevent
the switch from overheating, there must be a minimum of 3 inches between
any other device and the top, bottom, or sides of the switch.
Temperature surrounding the unit does not exceed 140°F (60°C).
Note When the switch is installed in an industrial enclosure, the
temperature within the enclosure is greater than normal room
temperature outside the enclosure.
The temperature inside the enclosure cannot exceed 140oF (60oC),
the maximum ambient enclosure temperature of the switch.
Cabling is away from sources of electrical noise, such as radios, power lines,
and fluorescent lighting fixtures.
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 materials to the shipping container and
save them.
The switch is shipped with these items:
Catalyst 2955 Hardware Installation Guide (Cisco part number
DOC-7814944=)
Power and relay connector
Switch installation protective liner
Chapter 3 Installation
Applying the Switch Protective Liner
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One ferrite
One RJ-45-to-DB-9 console port adapter cable
Note To connect the switch functional ground, you need a ring terminal lug (such as
Thomas & Bett part number RC10-14 or equivalent).
If you want to connect a terminal to the switch console port, you need to provide
an RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number
ACS-DSBUASYN=) with that adapter from Cisco.
For multimode (MM) connections, you can connect a 100BASE-FX port to a port
on a target device by using one of the MT-RJ fiber-optic patch cables listed in
Table B-1 on page B-3. Use the Cisco part numbers in Table B-1 to order the
patch cables that you need.
For single-mode (SM) connections, you can connect a 100BASE-LX port to a port
on a target device by using one of the connectors listed in Table B-2 on page B-4.
Use the Cisco part numbers in Table B-2 to order the patch cables that you need.
Applying the Switch Protective Liner
The switch ships with a protective liner that prevents debris from falling into the
switch ventilation holes during installation. Before installing the switch on a DIN
rail or in a 19-inch rack, connecting the switch to a power source, or wiring the
external alarm device relays, you must first apply the protective liner.
Because the protective liner covers ventilation holes on the switch, the liner must
be removed from the switch before power is applied to allow proper airflow
through the switch chassis.
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Follow these steps to apply the protective liner:
Step 1 Peel the protective liner from the backing.
Step 2 Apply the protective liner to the switch:
If you are installing the switch in a parallel mounting position, apply the
protective liner to the switch top panel.
If you are installing the switch in a face-down mounting position, apply the
protective liner to the switch rear panel.
Caution Remove the protective liner before applying power to the switch.
Failure to remove the protective liner could result in thermal damage to the
switch.
Verifying Switch Operation
Before installing the switch on a DIN rail or in a 19-inch rack, you should power
on the switch and verify that the switch passes POST. These sections describe the
steps required to connect a PC to the switch console port, to power on the switch,
and to observe POST:
Connecting a PC or a Terminal to the Console Port, page 3-11
Powering On the Switch and Running POST, page 3-13
Connecting a PC or a Terminal to the Console Port
To connect a PC to the console port, use the supplied RJ-45-to-DB-9 adapter
cable. To connect a terminal to the console port, you need to provide an
RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number
ACS-DSBUASYN=) with that adapter from Cisco. For console-port and
adapter-pinout information, see the Cable and Adapter Specifications section
on page B-5.
Chapter 3 Installation
Verifying Switch Operation
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The PC or terminal must support VT100 terminal emulation. The
terminal-emulation softwarefrequently a PC application such as
HyperTerminal or Procomm Plusmakes communication between the switch and
your PC or terminal possible during the setup program.
Follow these steps to connect the PC or terminal to the switch:
Step 1 Make sure that your terminal-emulation software is configured to communicate
with the switch through hardware flow control.
Step 2 Configure the baud rate and data format of the PC or terminal to match these
console-port default characteristics:
9600 baud
Eight data bits
One stop bit
No parity
After gaining access to the switch, you can change the port baud rate. See the
switch software configuration guide for instructions.
Step 3 Insert the adapter cable in the console port, as shown in Figure 3-1. (See the
Cable and Adapter Pinouts section on page B-9 for pinout descriptions.)
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Figure 3-1 Connecting to the Console Port
Step 4 Attach the appropriate adapter to the terminal, if needed.
Step 5 Insert the other adapter cable end in the PC or terminal adapter.
Step 6 Start the terminal-emulation software.
Powering On the Switch and Running POST
These sections describe the steps required to power on the switch and to observe
POST:
Grounding the Switch, page 3-15
Wiring the DC Power Source, page 3-17
Add the Ferrite to the Power and Relay Connector Wiring, page 3-24
Attach the Power and Relay Connector to the Switch, page 3-25
Power On the Switch, page 3-27
Running POST, page 3-27
1Console cable
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
910 11 12
12AB
13 14
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
104915
1
Chapter 3 Installation
Verifying Switch Operation
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Note The Catalyst 2955 switch can be used with an optional AC/DC power converter
(PWR-2955-AC=) in a nonhazardous location installation.
For instructions on how to connect the power converter to the switch, see the
Connecting the Switch to the Power Converter section on page 3-29.
Locate the power and relay connector, the ferrite, and the switch installation
protective liner in the switch kit.
Note You can get replacement power and relay connectors (PWR-2955-CONNECT=)
by calling Cisco Technical Support. See the Obtaining Technical Assistance
section on page xxx.
Obtain these necessary tools and equipment:
Ratcheting torque flathead screwdriver that exerts up to 15 inch pounds
(in-lbs.) of pressure
Ring terminal lug (such as Thomas & Bett part number RC10-14 or
equivalent)
Crimping tool (such as Thomas & Bett part number WT2000, ERG-2001, or
equivalent)
10- to 12-gauge copper ground wire (such as Belden part number 9912 or
equivalent)
Wire for power connections:
For input AC power connections to the power converter, use a standard
18-gauge AC power cord. See the Preparing the AC Power Cord
section on page 3-35 for instructions on how to prepare an AC power
cord for use with the power converter.
For DC power connections, use UL and CSA rated, style 1007 or 1569
twisted-pair copper appliance wiring material (AWM) wire (such as
Belden part number 9318).
Wire-stripping tools for stripping 10- to 12- and 18-gauge wires
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Chapter 3 Installation
Verifying Switch Operation
Grounding the Switch
Warning
This equipment is intended to be grounded to comply with emission and
immunity requirements. Ensure that the switch functional ground lug is
connected to earth ground during normal use.
Statement 1064
Warning
When installing the unit, always make the ground connection first and
disconnect it last.
Statement 42
Caution To make sure that the equipment is reliably connected to earth ground, follow the
grounding procedure instructions, and use a UL-listed ring terminal lug suitable
for number-10 to 12 AWG wire, such as Thomas & Bett part number RC10-14 or
equivalent.
To ground the switch to earth ground by using the functional ground screw, follow
these steps. Make sure to follow any grounding requirements at your site.
Step 1 Use a standard Phillips screwdriver or a ratcheting torque screwdriver with a
Phillips head to remove the ground screw from the front panel of the switch. Store
the ground screw for later use.
Step 2 If your ground wire is insulated, use a wire stripping tool to strip the 10- to
12-gauge ground wire to 0.5 inch (12.7 millimeter [mm]) ± 0.02 inch (0.5 mm) as
shown in Figure 3-2.
Chapter 3 Installation
Verifying Switch Operation
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Figure 3-2 Stripping the Ground Wire
Step 3 Insert the ground wire into the ring terminal lug, and using a crimping tool, crimp
the ring terminal to the wire.
Figure 3-3 Crimping the Ring Terminal
Step 4 Slide the ground screw through the ring terminal.
Step 5 Insert the ground screw into the functional ground screw opening on the front
panel.
10.5 inch (12.7 mm) ± 0.02 inch
(0.5 mm)
3Wire lead
2Insulation
104908
2
1
3
76666
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Chapter 3 Installation
Verifying Switch Operation
Step 6 Using a ratcheting torque screwdriver, tighten the ground screw and ring terminal
lug to the switch front panel to 15 in-lbs. (240 ounce-force inches [ozf-in.]), as
shown in Figure 3-4.
Figure 3-4 Torquing Ground-Lug Screws
Step 7 Attach the other end of the ground wire to a grounded bare metal surface, such as
a ground bus, a grounded DIN rail, or a grounded bare rack.
Wiring the DC Power Source
Warning
Only trained and qualified personnel should be allowed to install or replace this
equipment.
Statement 49
1Grounding cable
104909
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CATALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
910 11 12
12AB
13 14
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
1
Chapter 3 Installation
Verifying Switch Operation
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Warning
Before performing any of the following procedures, ensure that power is
removed from the DC circuit. To ensure that all power is OFF, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the OFF position, and tape the switch handle of the circuit breaker in
the OFF position.
Statement 140
Warning
Connect the unit only to DC power source that complies with the safety
extra-low voltage (SELV) requirements in IEC 60950 based safety standards.
Statement 1033
Caution You must connect the switch only to a DC-input power source that has an input
supply voltage from 18 to 32 VDC. If the supply voltage is not in this range, the
switch might not operate properly or might be damaged.
Caution The switch must be installed with 2 A-branch-circuit protection.
Caution This installation must comply with all applicable codes.
Note For wire connections to the power and relay connector, you must use UL and CSA
rated, style 1007 or 1569 twisted-pair copper appliance wiring material (AWM)
wire (such as Belden part number 9318).
You must also use the ferrite that ships with the switch.
To wire the switch to the optional AC/DC converter, go to the Connecting the
Switch to the Power Converter section on page 3-29.
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Chapter 3 Installation
Verifying Switch Operation
To wire the switch to a DC-input power source, follow these steps:
Step 1 Locate the power and relay connector (see Figure 3-5).
Figure 3-5 Power and Relay Connector
Step 2 Identify the positive and return feed positions for the power and relay connector.
The positive DC power connection from power supply A is labeled VA, and the
return is the adjacent connection labeled RT. The positive DC power connection
from power supply B (the redundant power supply) is labeled VB, and the return
is the adjacent connection labeled RT.
Step 3 Measure two strands of twisted-pair copper wire (18 to 20 AWG) long enough to
connect to the DC power source.
Step 4 Using an 18-gauge wire-stripping tool, strip each of the two twisted pair wires
coming from each DC-input power source to 0.25 inch (6.3 mm) ± 0.02 inch (0.5
mm). Do not strip more than 0.27 inch (6.8 mm) of insulation from the wire.
Stripping more than the recommended amount of wire can leave exposed wire
from the power and relay connector after installation.
Figure 3-6 Stripping the Power Connection Wire
Step 5 Insert the exposed DC-input power source wires into the power and relay
connector, as shown in Figure 3-7. Make sure that you cannot see any wire lead.
Only wire with insulation should extend from the connector.
104353
RT A1 A2 VB
VA A1
A2 RT
10.25 in. (6.3 mm) ± 0.02 in. (0.5 mm)
97489
1
Chapter 3 Installation
Verifying Switch Operation
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Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector.
Statement 122
Figure 3-7 Inserting Wires in the Power and Relay Connector
1Power supply A positive
connection
5External device 2, relay wire B
connection
2Power supply A return
connection
6External device 1, relay wire B
connection
3External device 1, relay wire A
connection
7Power supply B return
connection
4External device 2, relay wire A
connection
8Power supply B positive
connection
97485
RT A1 A2 VB
VA A1
A2 RT
1
2
3
4
5
6
7
8
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Chapter 3 Installation
Verifying Switch Operation
Step 6 Use a ratcheting torque flathead screwdriver to torque the power and relay
connector captive screws (above the installed wire leads) to 4.5 in-lbs. (72
ozf-in.). (See Figure 3-8.)
Caution Do not overtorque the power and relay connector captive screws. The
recommended maximum torque is 4.5 in-lbs.
Figure 3-8 Torquing the Power and Relay Connector Captive Screws
1Power and relay connector captive screws
97486
RT A1 A2 VB
VA A1
A2 RT
1
Chapter 3 Installation
Verifying Switch Operation
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Step 7 Connect the other end of the wire connected to VA to the positive pole on the DC
power source, and connect the other end of the wire connected to RT to the return
pole on the DC power source.
Note If you are connecting a second power supply, repeat Step 4 through Step 7
for the DC-input (VB) and return (RT) for power supply B.
Figure 3-9 shows the completed DC-input wiring on a power and relay connector
for a primary power supply and an optional secondary power supply.
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Chapter 3 Installation
Verifying Switch Operation
Figure 3-9 Completed DC Power Connections on the Power and Relay
Connector
1Power supply A positive
connection
5External device 2, relay wire B
connection
2Power supply A return
connection
6External device 1, relay wire B
connection
3External device 1, relay wire A
connection
7Power supply B return
connection
4External device 2, relay wire A
connection
8Power supply B positive
connection
104921
RT A1 A2 VB
VA A1
A2 RT
1
2
3
4
5
6
7
8
Chapter 3 Installation
Verifying Switch Operation
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Note If you plan to connect external alarm devices to the alarm relays, go to the Wiring
the External Alarm Device Relays section on page 3-48. Otherwise, go to the
next section.
Add the Ferrite to the Power and Relay Connector Wiring
Before you connect the power and relay connector to the front panel, follow these
steps to add a ferrite to the power and relay connector wiring.
Step 1 Position the opened ferrite around the wiring within 3 inches of the power and
relay connector.
Step 2 Loop the wiring around the ferrite (see Figure 3-10).
Figure 3-10 Wire Looped Through the Ferrite
Step 3 Press the ferrite closed until the clasp snaps shut (see Figure 3-11).
104565
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Chapter 3 Installation
Verifying Switch Operation
Figure 3-11 Clasping the Ferrite
Attach the Power and Relay Connector to the Switch
Follow these steps to attach the power and relay connector to the front panel of
the switch.
Step 1 Insert the power and relay connector into the power and relay connector
receptacle on the switch front panel (see Figure 3-12).
Caution Secure the wires coming from the power and relay connector so that they cannot
be disturbed by casual contact. For example, use tie wraps to secure the wires to
the rack.
104351
RT A1 A2 VB
VA A1
A2 RT
Chapter 3 Installation
Verifying Switch Operation
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Figure 3-12 Connecting the Power and Relay Connector to the Switch
Step 2 Use a flathead screwdriver to tighten the captive screws on the sides of the power
and relay connector.
1Power and relay connector
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
910 11 12
12AB
13 14
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
104354
1
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Chapter 3 Installation
Verifying Switch Operation
Power On the Switch
Caution Remove the protective liner before applying power to the switch.
Failure to remove the protective liner could result in thermal damage to the
switch.
To apply power to a switch that is directly connected to a DC power source, locate
the circuit breaker on the panel board that services the DC circuit, and switch the
circuit breaker to the ON position.
Note For instructions on how to apply power to a switch that is connected to a power
converter, see the Applying Power to the Power Converter section on page 3-46.
Running POST
After the power is connected, the switch automatically begins POST, a series of
tests that verifies that the switch functions properly.
Note The uplink port status LEDs provide system and status information during POST.
On the Catalyst 2955C-12 and 2955S-12, the uplink ports are labeled 13 and 14.
On the Catalyst 2955T-12, the uplink ports are labeled 1 and 2.
When the Catalyst 2955C-12 and 2955S-12 begin POST:
Uplink port 13 LED is amber.
Uplink port 14 LED blinks green.
When the Catalyst 2955T-12 begins POST:
Uplink port 1 LED is amber.
Uplink port 2 LED blinks green.
Chapter 3 Installation
Verifying Switch Operation
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If POST completes successfully on the Catalyst 2955C-12 and 2955S-12:
Uplink port 13 LED turns green.
Uplink port 14 LED goes off during the flash file system initialization.
If POST completes successfully on the Catalyst 2955T-12:
Uplink port 1 LED turns green.
Uplink port 2 LED goes off during the flash file system initialization.
If POST fails on the Catalyst 2955C-12 and 2955S-12:
Uplink port 13 LED blinks amber.
Uplink port 14 LED turns green.
If POST fails on the Catalyst 2955T-12:
Uplink port 1 LED blinks amber.
Uplink port 2 LED turns green.
While the switch powers on, the power status LEDs are green or red, showing the
presence or absence of power supplies (see Table 2-1 on page 2-13 for details).
During POST, the power status LEDs are green. After POST completes
successfully, the power status LEDs are green if both power supplies are
functioning normally and the switch has been configured to operate in dual-power
mode.
If the switch is in single-power mode and only power supply A is present and
functioning, the LED for power supply B is green, and the LED for power supply
A shows its status. If the switch is in single-power mode and only power supply
B is present and functioning, the LED for power supply A is green, and the LED
for power supply B shows its status.
See the switch configuration guide for details on single- and dual-power mode
operation.
On a Catalyst 2950 switch, you can use the MODE button to recover the switch
password. The Catalyst 2955 switch has no MODE button, so the boot loader
compensates by using break key detection to stop the automatic boot sequence for
password recovery.
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Chapter 3 Installation
Connecting the Switch to the Power Converter
On the Catalyst 2955C-12 and 2955S-12 switches, during the initial appearance
of the boot loader prompt on the console after POST, uplink port 13 LED blinks
green, and uplink port 14 LED is off. On the Catalyst 2955T-12 switch, during the
initial appearance of the boot loader prompt on the console after POST, uplink
port 1 LED blinks green, and uplink port 2 LED is off.
Note POST failures are usually fatal. Call Cisco Systems immediately if your switch
does not pass POST. See the Obtaining Technical Assistance section on
page xxx.
Note See the switch software configuration guide for details on the Catalyst 2955
switch password recovery process.
After successfully running POST, follow these steps.
Step 1 Turn off power to the switch.
Step 2 Disconnect the cables.
Step 3 Decide where you want to install the switch.
Connecting the Switch to the Power Converter
The Catalyst 2955 switch can be used with an optional AC/DC power converter
(PWR-2955-AC=) in a nonhazardous location installation.
Caution To prevent the Catalyst 2955 switch from overheating, there must be a minimum
of 3 inches between any other device and the top, bottom, or sides of the switch.
The power converter requires 1 inch of thermal spacing to prevent overheating.
Therefore, there must be a minimum of 4 inches between the power converter and
the Catalyst 2955 switch to prevent each device from overheating.
Chapter 3 Installation
Connecting the Switch to the Power Converter
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These sections describe the steps required to connect the switch to a power
converter:
Installing the Power Converter on a DIN Rail, page 3-30
Connecting the Power Converter to the Power and Relay Connector,
page 3-32
After you connect the switch to the power converter, you must connect the power
converter to an AC or a DC power source.
For instructions on connecting the power converter to an AC power source, see
Connecting the Power Converter to an AC Power Source, page 3-35. For
instructions on connecting the power converter to a DC power source, see
Connecting the Power Converter to a DC Power Source, page 3-41.
Installing the Power Converter on a DIN Rail
Follow these steps to install the power converter on a DIN rail.
Warning
This equipment is supplied as open type equipment. It must be mounted
within an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool.
The enclosure must meet IP 54 or NEMA type 4 minimum enclosure rating
standards.
Statement 1063
Caution To prevent the Catalyst 2955 switch from overheating, there must be a minimum
of 3 inches between any other device and the top, bottom, or sides of the switch.
The power converter requires 1 inch of thermal spacing to prevent overheating.
Therefore, there must be a minimum of 4 inches between the power converter and
the Catalyst 2955 switch to prevent each device from overheating.
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Step 1 Position the power converter directly in front of the DIN rail, making sure that the
top of the DIN rail clip meets the top of the DIN rail, as shown in Figure 3-13.
Figure 3-13 Mounting the Power Converter on a DIN Rail
Step 2 Rotate the power converter down toward the DIN rail until the release tab on the
rear panel clicks.
Step 3 Press down lightly on the top of the power converter to ensure that it is firmly
locked in place.
1DIN rail clip 3Clip release tab
2DIN rail
97326
1
2
3
Chapter 3 Installation
Connecting the Switch to the Power Converter
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Connecting the Power Converter to the Power and Relay
Connector
Follow these steps to connect your switch to the power converter.
Warning
Use twisted-pair supply wires suitable for 86°F (30°C) above surrounding
ambient temperature outside the enclosure.
Statement 1067
Warning
This equipment is intended to be grounded to comply with emission and
immunity requirements. Ensure that the switch functional ground lug is
connected to earth ground during normal use.
Statement 1064
Caution To make sure that the switch is reliably connected to earth ground, follow the
grounding procedure instructions in theGrounding the Switch section on
page 3-15, and use a UL-listed lug suitable for number-10 to 12 AWG wire and
an M-5 thread ground screw.
Note For wire connections to the power and relay connector, you must use UL and CSA
rated, style 1007 or 1569 twisted-pair copper appliance wiring material (AWM)
wire (such as Belden part number 9318).
You must also use the ferrite that ships with the switch.
Step 1 Locate the Catalyst 2955 switch power and relay connector (see Figure 3-5).
Step 2 Identify the positive and return feed positions for the power and relay connector.
The positive DC power connection from power supply A is labeled VA, and the
return is the adjacent connection labeled RT. The positive DC power connection
from power supply B (the secondary power supply) is labeled VB, and the return
is the adjacent connection labeled RT.
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Step 3 Measure a strand of twisted-pair copper wire (18 AWG) long enough to connect
the power converter to the switch. Ensure that the wire is long enough to loop
through the ferrite and still maintain 4 inches of thermal spacing between the
switch and the power converter.
Step 4 Using an 18-gauge wire-stripping tool, strip both ends of the twisted pair wires to
0.25 inch (6.3 mm) ± 0.02 inch (0.5 mm). Do not strip more than 0.27 inch (6.8
mm) of insulation from the wire. Stripping more than the recommended amount
of wire can leave exposed wire from the power and relay connector after
installation. (See Figure 3-6.)
Step 5 Insert the exposed wires into the power and relay connector, as shown in
Figure 3-7. Make sure that you cannot see any exposed wire. Only wire with
insulation should extend from the connection.
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector.
Statement 122
Step 6 Use a ratcheting torque flathead screwdriver to torque the power and relay
connector captive screw (above the installed wire leads) to 4.5 in-lbs. (72 ozf-in.).
(See Figure 3-8.)
Caution Do not overtorque the power and relay connector captive screws. The
recommended maximum torque is 4.5 in-lbs.
Step 7 Connect the other end of the positive wire (connected to VA) to the far-left power
converter DC positive-output connection, and connect the other end of the return
wire (connected to RT) to the far-left power converter return-output connection.
Step 8 Tighten the terminal block screws. (See Figure 3-14.)
Chapter 3 Installation
Connecting the Switch to the Power Converter
3-34
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Figure 3-14 Connecting Wires to the Power Converter DC Output Terminal
Block
If you are connecting a second power supply, repeat Step 2 through Step 7, using
the positive connection (VB) and return connection (RT) on the power and relay
connector for power supply B.
Note If you plan to connect external alarm devices to the alarm relays, go to the Wiring
the External Alarm Device Relays section on page 3-48.
Before you connect the power and relay connector to the switch front panel,
follow the steps in the Add the Ferrite to the Power and Relay Connector Wiring
section on page 3-24 to add a ferrite to the power and relay connector wiring.
Follow the steps in the Attach the Power and Relay Connector to the Switch
section on page 3-25 to attach the power and relay connector to the front panel of
the switch.
1DC output positive wire
connections
2DC output return wire
connections
DC ok
+
DC 24V/2.5A
AC Power Converter
PWR-2955-AC=
+
97328
12
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Connecting the Power Converter to an AC Power Source
These sections describe the steps required to connect the power converter to an
AC power source:
Preparing the AC Power Cord, page 3-35
Connecting the AC Power Cord to the Power Converter, page 3-37
Preparing the AC Power Cord
To connect the power converter to an AC power source, you need a standard AC
power cord. Power cord connector types vary by country. Check with your
electrical equipment supplier to obtain a cord that meets your site electrical
requirements. Power cord color codes also vary by country, as shown in Table 3-1.
Table 3-1 AC Power Cord Color Codes
Europe (International)
Color Meaning
Brown Line
Blue Neutral
Green/yellow Earth ground
United States
Color Meaning
Black Line
White Neutral
Green Earth ground
Chapter 3 Installation
Connecting the Switch to the Power Converter
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Follow these steps to prepare an AC power cord to connect to the power converter.
Warning
When installing the unit, always make the ground connection first and
disconnect it last.
Statement 42
Step 1 Cut off the female connector on the cord.
Step 2 Using a wire-stripping tool, strip the outer insulation layer 1 inch (2.54 cm).
Step 3 Strip the inner wire insulation to 0.25 inch (6.3 mm) ± 0.02 inch (0.5 mm), as
shown in Figure 3-15.
Figure 3-15 Preparing the AC Power Cord
10.25 inch (6.35 mm) 20.75 inch (19.05 mm)
104352
1
2
3-37
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Connecting the AC Power Cord to the Power Converter
Follow these steps to connect the AC power cord to the power converter.
Caution AC power sources must be dedicated AC branch circuits. Each branch circuit must
be protected by a dedicated two-pole circuit breaker.
Step 1 Insert the exposed ground wire lead into the power converter ground wire
connection. Ensure that only wire with insulation extends from the connector.
Step 2 Tighten the ground wire terminal block screw.
Caution Do not insert the cord into the AC outlet until you have completed wiring the line,
neutral, and ground connections.
Figure 3-16 AC/DC Power Input Terminal Block and Input Voltage Selector
1Input voltage selector 3Line wire connection
2Neutral wire connection 4Earth ground wire connection
97491
AC 115/230V 50-60Hz
N L
230V
1
234
Chapter 3 Installation
Connecting the Switch to the Power Converter
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Step 3 Insert the line and neutral wire leads into the terminal block line and neutral
connections (see Figure 3-17). Make sure that you cannot see any wire lead.
Ensure that only wire with insulation extends from the connectors.
Step 4 Tighten the line and neutral terminal block screws.
Figure 3-17 Connecting AC Power to the Power Converter
Step 5 Set the input voltage selector on the power converter to 115 or 230 V, depending
on your country voltage settings or the requirements for the AC receptacle that
you are using. (See Table 3-2.)
Step 6 Connect the other end of the AC power cord to the AC outlet.
Table 3-2 lists power converter input voltages and the corresponding input voltage
selector settings.
1To AC power source
97329
DC ok
+
DC 24V/2.5A
AC Power Converter
PWR-2955-AC=
AC 115/230V 50-60Hz
N L
+
230V
1
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Figure 3-18 shows the completed wiring for the power converter and a
Catalyst 2955 switch.
Table 3-2 Input Voltage Selector Settings
AC/DC in
Input voltage
selector setting Output Current
176 to 264 VAC 230 V 2.5 A
95 to 176 VAC 230 V 1.5 A
85 to 132 VAC 115 V 2.5 A
160 to 375 VDC 230 V 2.5 A
120 to 160 VDC 230 V 2 A
80 to 120 VDC 230 V 1.5 A
Chapter 3 Installation
Connecting the Switch to the Power Converter
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Figure 3-18 The Power Converter Connected to the Catalyst 2955 Switch
and an AC Power Source
1Power and relay connector 4To AC power source
24 inches of thermal spacing 5Switch functional ground connection
3DC output wires
97483
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
9101112
12AB
13 14
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
DC ok
+
DC 24V/2.5A
AC Power Converter
PWR-2955-AC=
AC 115/230V 50-60Hz
N L
+
230V
2
3
1
4
5
3-41
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Connecting the Power Converter to a DC Power Source
You can also connect the power converter to a DC power source. The power
converter derates the power source voltage to provide 24 VDC to the switch.
Note To power on the switch, the input voltage to the power converter must be at least
95 VDC. To ensure proper operation after the Catalyst 2955 switch has powered
on, the input voltage to the power converter cannot drop below 80 VDC.
To guarantee 24 VDC at 2.5 A to the Catalyst 2955 switch, the input power to the
power converter must remain between 160 and 375 VDC.
Figure 3-19 shows a basic wiring diagram for connecting a power converter to a
DC power source.
Chapter 3 Installation
Connecting the Switch to the Power Converter
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Figure 3-19 Power Converter Connected to a DC Power Source
Follow these steps to connect the power converter to a DC power source.
Warning
Use twisted-pair supply wires suitable for 86°F (30°C) above surrounding
ambient temperature outside the enclosure.
Statement 1067
Warning
When installing the unit, always make the ground connection first and
disconnect it last.
Statement 42
1DC out 5Positive
2Power converter 6Return
3AC/DC input terminal
block
7Fuse rated to 600
VAC / D C
4Earth ground 8Fuse rated to 600
VAC / D C
97533
+
-
+
-
+
-
NLPE
1
2
4
5
3
6
7
8
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Step 1 Measure a single length of green, stranded copper wire long enough to connect
the power converter to the earth ground.
Note For connections from the power converter to earth ground, use shielded
12 AWG stranded copper wire, such as Belden part number 9912 or the
equivalent.
Step 2 Measure a length of twisted-pair copper wire long enough to connect the power
converter to the DC power source.
Note For DC connections from the power converter to the DC source, use 12
AWG twisted-pair copper wire, such as Belden part number 9344 or the
equivalent.
Step 3 Using a 12-gauge wire-stripping tool, strip the ground wire and both ends of the
twisted pair wires to 0.25 inch (6.3 mm) ± 0.02 inch (0.5 mm). Do not strip more
than 0.27 inch (6.8 mm) of insulation from the wires. Stripping more than the
recommended amount of wire can leave exposed wire from the power and relay
connector after installation. (See Figure 3-2.)
Step 4 Connect one end of the green, stranded copper wire to a grounded bare metal
surface, such as a ground bus, a grounded DIN rail, or a grounded bare rack.
Step 5 Insert the other end of the exposed ground wire lead into the Earth ground wire
connection on the power converter terminal block. Only wire with insulation
should extend from the connection. (See Figure 3-20.)
Step 6 Tighten the earth ground wire connection terminal block screw.
Chapter 3 Installation
Connecting the Switch to the Power Converter
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Figure 3-20 AC/DC Power Input Terminal Block Wire Connections to a DC
Source
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector.
Statement 122
Step 7 Insert the twisted-pair wire leads into the terminal block line and neutral
connections. Insert the black wire lead into the neutral wire connection and the
red wire lead into the line wire connection. Ensure that only wire with insulation
extends from the connectors. (See Figure 3-20.)
Step 8 Tighten the line and neutral terminal block screws.
1Input voltage selector 3Positive wire connection
2Return wire connection (to DC
return)
4Earth ground wire connection
104762
AC 115/230V 50-60Hz
N L
230V
4
2
1
3
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Step 9 Connect the red wire to the positive pole of the DC power source, and connect the
black wire to the return pole. Ensure that each pole has a current-limiting-type
fuse rated to at least 600 VAC/DC ( such as the KLKD Midget fuse).
Step 10 Set the input voltage selector on the power converter to 230 V.
Figure 3-21 shows the completed wiring for the power converter and a
Catalyst 2955 switch.
Figure 3-21 The Power Converter Connected to the Catalyst 2955 Switch
and a DC Power Source
1Power and relay connector 4To earth ground
24 inches of thermal spacing 5DC input wires
3DC output wires 6Switch functional ground connection
104761
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
9101112
12AB
1314
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
DC ok
+
DC 24V/2.5A
AC Power Converter
PWR-2955-AC=
AC 115/230V 50-60Hz
N L
+
230V
4
3
1
5
6
2
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Connecting the Switch to the Power Converter
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Applying Power to the Power Converter
Caution Remove the protective liner before applying power to the switch.
Failure to remove the protective liner could result in thermal damage to the
switch.
Move the circuit breaker for the AC outlet or the DC control circuit to the on
position.
The LED on the power converter front panel is green when the unit is operating
normally. The LED is off when the unit is not operating normally.
After the power is connected, the switch automatically begins the power-on self
test (POST), a series of tests that verifies that the switch functions properly. For
instructions on how to interpret POST results, see the Running POST section
on page 3-27.
Removing the Power Converter from a DIN Rail
Follow these steps to remove the power converter from a DIN rail.
Step 1 Ensure that power to the power converter is off, and disconnect all cables
connecting the power converter to the switch.
Step 2 Insert a long flathead screwdriver into the tab slot at the bottom of the power
converter, and pull down the clip release tab. As the clip releases, lift the bottom
of the power converter, as shown in Figure 3-22.
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Chapter 3 Installation
Connecting the Switch to the Power Converter
Figure 3-22 Removing the Power Converter from a DIN Rail
1DIN rail clip 3Clip release tab
2DIN rail
97327
2
3
1
Chapter 3 Installation
Wiring the External Alarm Device Relays
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Wiring the External Alarm Device Relays
The alarm relays on the Catalyst 2955 switch are normally open (NO). To connect
an external alarm device to the relays, you must connect two relay contact wires
to complete an electrical circuit. Because each external alarm device requires two
connections to a relay, the Catalyst 2955 switch supports a maximum of two
external alarm devices.
Note For wire connections to the power and relay connector, you must use UL and CSA
rated, style 1007 or 1569 twisted-pair copper appliance wiring material (AWM)
wire (such as Belden part number 9318).
You must also use the ferrite that ships with the switch.
After you have completed the wiring for the power connections, follow these steps
to wire the switch to an external alarm device:
Note This procedure is optional.
Step 1 Measure two strands of twisted-pair wire (18 to 20 AWG) long enough to connect
to the external alarm device.
Step 2 Use a wire stripper to remove the casing from both ends of each wire to 0.25 inch
(6.3 mm) ± 0.02 inch (0.5 mm). Do not strip more than 0.27 inch (6.8 mm) of
insulation from the wires. Stripping more than the recommended amount of wire
can leave exposed wire from the power and relay connector after installation.
Step 3 Insert the exposed wires for the external alarm device into the two connections
labeled A1, as shown in Figure 3-23.
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Chapter 3 Installation
Wiring the External Alarm Device Relays
Figure 3-23 Inserting Relay Wires into the Power and Relay Connector
Step 4 Use a ratcheting torque flathead screwdriver to torque the power and relay
connector captive screw (above the installed wire leads) to 4.5 in-lbs. (72 ozf-in.).
(See Figure 3-24 for details.)
1Power supply A positive
connection
5External device 2, relay wire B
connection
2Power supply A return
connection
6External device 1, relay wire B
connection
3External device 1, relay wire A
connection
7Power supply B return
connection
4External device 2, relay wire A
connection
8Power supply B positive
connection
104922
RT A1 A2 VB
VA A1
A2 RT
RT A1 A2 VB
VA A1
A2 RT
1
2
3
4
5
6
7
8
Chapter 3 Installation
Wiring the External Alarm Device Relays
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Caution Do not overtorque the power and relay connector captive screws. The
recommended maximum torque is 4.5 in-lbs.
Figure 3-24 Torquing the Power and Relay Connector Captive Screws
Step 5 Repeat Step 1 through Step 4 to insert the input and output wires of an additional
external alarm device into the two connections labeled A2.
1Power and relay connector captive screws
104923
RT A1 A2 VB
VA A1
A2 RT
RT A1 A2 VB
VA A1
A2 RT
1
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Chapter 3 Installation
Wiring the External Alarm Device Relays
Figure 3-25 shows the completed wiring for two power supplies and two external
alarm devices on a power and relay connector.
Figure 3-25 Completed Connections for Two External Alarm Devices on the
Power and Relay Connector
1Power supply A positive
connection
5External device 2, relay wire B
connection
2Power supply A return
connection
6External device 1, relay wire B
connection
3External device 1, relay wire A
connection
7Power supply B return
connection
4External device 2, relay wire A
connection
8Power supply B positive
connection
104920
RT A1 A2 VB
VA A1
A2 RT
1
2
3
4
5
6
7
8
Chapter 3 Installation
Installing the Switch on a DIN Rail
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Note See the Add the Ferrite to the Power and Relay Connector Wiring section on
page 3-24 for instructions on how to attach the ferrite to the power and relay
connector wiring.
See the Attach the Power and Relay Connector to the Switch section on
page 3-25 for instructions on how to connect the power and relay connector to the
front panel.
Installing the Switch on a DIN Rail
You can mount the Catalyst 2955 switch on a DIN rail in a parallel or a face-down
position.
Warning
This equipment is supplied as open type equipment. It must be mounted
within an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool.
The enclosure must meet IP 54 or NEMA type 4 minimum enclosure rating
standards.
Statement 1063
Caution To prevent the switch from overheating, there must be a minimum of 3 inches
between any other device and the top, bottom, or sides of the switch.
The switch ships with the clip assembly installed on the rear panel for a parallel
mounting position, as shown in Figure 3-26. To mount the switch in a face-down
position, remove the clip assembly from the rear panel, and install it on the top of
the switch, as shown in Figure 3-27.
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Chapter 3 Installation
Installing the Switch on a DIN Rail
Figure 3-26 Catalyst 2955 Switch Rear Panel
1Catalyst 2955 switch rear panel 3DIN rail clip mounting screws
2DIN rail clip assembly
104560
32
1
Chapter 3 Installation
Installing the Switch on a DIN Rail
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Figure 3-27 Catalyst 2955 Switch Top Panel
To attach the switch to a DIN rail, follow these steps.
Step 1 Position the rear panel of the switch directly in front of the DIN rail, making sure
that the top of the DIN rail clip hooks over the top of the DIN rail, as shown in
Figure 3-28 and Figure 3-29.
1Catalyst 2955 switch top panel 3DIN rail clip mounting screws
2DIN rail clip assembly
104561
2
13
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Chapter 3 Installation
Installing the Switch on a DIN Rail
Figure 3-28 Mounting the Switch on a DIN Rail in a Parallel Position
1DIN rail clip 3DIN rail clip release tab
2DIN rail
104562
1
2
3
Chapter 3 Installation
Installing the Switch on a DIN Rail
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Figure 3-29 Mounting the Switch on a DIN Rail in a Face-Down Position
Step 2 Rotate the switch down toward the DIN rail until the release tab on the rear panel
clicks.
Step 3 Lift lightly on the bottom of the switch to ensure that it is firmly locked in place.
After the switch is mounted on the DIN rail, power on the switch as described in
Powering On the Switch and Running POST section on page 3-13.
1DIN rail clip 3DIN rail clip release tab
2DIN rail
104571
1
2
3
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Chapter 3 Installation
Installing the Switch in a Rack
Note For instructions on how to remove the switch from a DIN rail, see the Removing
the Switch from a DIN Rail or a Rack section on page 3-59.
Installing the Switch in a Rack
You can use an optional DIN rail adapter kit (available through Cisco, part number
STK-RACKMNT-2955=) to mount the Catalyst 2955 switch in a 19-inch rack.
The rack mounting kit comes with a DIN rail adapter and screws to attach the
adapter to the rack. Ask your Cisco representative for details.
Caution To prevent the switch from overheating, there must be a minimum of 3 inches
between any other device and the top, bottom, or sides of the switch.
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
Chapter 3 Installation
Installing the Switch in a Rack
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To install the switch in a rack, follow these steps:
Step 1 Use the four Phillips machine screws to securely attach the brackets to the rack,
as shown in Figure 3-30.
Figure 3-30 Installing the DIN Rail Adapter
Step 2 Position the rear panel of the switch directly in front of the DIN rail, making sure
that the top of the DIN rail clip hooks over the top of the DIN rail, as shown in
Figure 3-28 and Figure 3-29.
Step 3 Rotate the switch down toward the DIN rail until the release tab on the rear panel
clicks.
Step 4 Lift lightly on the bottom of the switch to ensure that it is firmly locked in place.
See Figure 3-28 for details.
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Chapter 3 Installation
Removing the Switch from a DIN Rail or a Rack
Figure 3-31 Installing the Switch in a Rack
After mounting the switch in the rack, start the terminal-emulation software, and
provide power to the switch. See the Powering On the Switch and Running
POST section on page 3-13 for instructions.
Note For instructions on how to remove the switch from a rack, see the Removing the
Switch from a DIN Rail or a Rack section on page 3-59.
Removing the Switch from a DIN Rail or a Rack
To remove the switch from a DIN rail or a rack, follow these steps:
Step 1 Ensure that power is removed from the switch, and disconnect all cables and
connectors from the front panel of the switch.
Step 2 Push down on the top of the DIN rail clip release tab with your finger. As the clip
releases, lift the bottom of the switch, as shown in Figure 3-32 and Figure 3-33.
87092
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
910 1112
12AB
13 14
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
Chapter 3 Installation
Removing the Switch from a DIN Rail or a Rack
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Figure 3-32 Removing the Switch from a Parallel Mounting Position
1DIN rail clip 3DIN rail clip release tab
2DIN rail
104563
1
2
3
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Chapter 3 Installation
Removing the Switch from a DIN Rail or a Rack
Figure 3-33 Removing the Switch from a Face-Down Mounting Position
1DIN rail clip 3DIN rail clip release tab
2DIN rail
104564
1
2
3
Chapter 3 Installation
Connecting to 10/100 and 10/100/1000 Ports
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Connecting to 10/100 and 10/100/1000 Ports
The 10/100 ports on the Catalyst 2955 configure themselves to operate at the
speed and duplex settings of attached devices.They operate at 10 or 100 Mbps in
half- or full-duplex mode. If the attached devices do not support autonegotiation,
you can set the speed and duplex parameters.
The 10/100/1000 ports configure themselves to operate at the speed setting of
attached devices.These ports on the Catalyst 2955T-12 operate at either 10 or 100
Mbps in either full- or half-duplex mode or at 1000 Mbps in full-duplex mode. If
the attached devices do not support autonegotiation, you can set the speed
parameter.
Connecting devices that do not autonegotiate or devices with manually set speed
and duplex parameters can reduce performance or result in link failures between
the devices. To maximize performance, choose one of these methods for
configuring the ports:
Let the ports autonegotiate both speed and duplex for 10/100 ports and speed
for 10/100/1000 ports.
Set the speed and duplex parameters on both ends of the connection.
Caution Proper ESD protection is required whenever you handle Cisco equipment.
Installation and maintenance personnel should be properly grounded using
ground straps to eliminate the risk of ESD damage to the switch.
Do not touch connectors or pins on component boards. Do not touch circuit
components inside the switch. When not in use, store the equipment in
appropriate static-safe packaging.
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Chapter 3 Installation
Connecting to 10/100 and 10/100/1000 Ports
Follow these steps to connect the switch to 10BASE-T, 100BASE-TX, or
1000BASE-T devices:
Step 1 When connecting to servers, workstations, and routers, insert a twisted-pair
straight-through cable in a front-panel RJ-45 connector, as shown in Figure 3-34
and Figure 3-35. When connecting to switches or repeaters, insert a twisted-pair
crossover cable. (See the Cable and Adapter Specifications section on page B-5
for cable-pinout descriptions.)
Note When connecting to 1000BASE-T devices, be sure to use a four twisted-pair,
Category 5 cable.
Figure 3-34 Connecting to a 10/100 Port on the Catalyst 2955 Switch
1Ethernet cable
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CATALYST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
RTN B
34567
8
910 11 12
12AB
13 14
MAJ MIN
10Base-T/100Base-TX
RTN A
24V A
104917
1x
1
Chapter 3 Installation
Connecting to 10/100 and 10/100/1000 Ports
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Figure 3-35 Connecting to a 10/100/1000 Port on the Catalyst 2955T-12
Switch
Step 2 Insert the other cable end in an RJ-45 connector on the target device.
Step 3 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 Spanning Tree Protocol (STP) discovers the network
topology and searches for loops. This process can take about 30 seconds, and then
the 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 a problemg with the adapter installed in the target
device. See Chapter 5, Troubleshooting, for solutions to cabling problems.
Step 4 Reconfigure and restart the target device if necessary.
Step 5 Repeat Steps 1 through 4 to connect each port.
110/100/1000 Ethernet cable
104918
12
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALY ST 2955
CONSOLE 10/100/1000Base-T ALARMS
24V B
24V A
RTN A
RTN B
10Base-T/100Base-TX
34567
8
910 11 12
12AB
12
MAJ MIN
1
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Chapter 3 Installation
Connecting to 100BASE-FX MM Ports
Connecting to 100BASE-FX MM Ports
Warning
Class 1 LED product.
Statement 1027
The 100BASE-FX MM fiber-optic uplink ports operate in full-duplex mode.
You can connect a 100BASE-FX port to a port on a target device by using one of
the MT-RJ fiber-optic patch cables listed in Table B-1 on page B-3. Use the Cisco
part numbers in Table B-1 to order the patch cables that you need.
Caution Do not remove the dust plugs from the fiber-optic ports or the rubber caps from
the fiber-optic cable until you are ready to connect the cable. The plugs and caps
protect the fiber-optic ports and cables from contamination and ambient light.
Follow these steps to connect the switch to a MM 100BASE-FX device:
Step 1 Remove the dust plugs from the 100BASE-FX port, as shown in Figure 3-36, and
store them for future use. Remove the rubber caps from the MT-RJ patch cable.
Store them for future use.
Figure 3-36 Removing Dust Plugs from 100BASE-FX Ports
13 14
100Base-FX MM
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Connecting to 100BASE-FX MM Ports
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Step 2 Insert the cable in a 100BASE-FX port. (See Figure 3-37.)
Figure 3-37 Connecting to a 100BASE-FX MM Port
Step 3 Insert the other cable end into the MT-RJ port on the 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 STP discovers the network topology and searches for
loops. This process can take 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 a problem with the adapter installed in the target
device. See Chapter 5, Troubleshooting, for solutions to cabling problems.
Step 5 Reconfigure and restart the target device, if necessary.
Step 6 Repeat Steps 1 through 5 to connect each port.
1Fiber-optic uplink cable
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CATALY ST 2955
CONSOLE 100Base-FX MM ALARMS
24V B
24V A
RTN A
RTN B
34567
8
910 11 12
12AB
13 14
MAJ MIN
104919
10Base-T/100Base-TX
1
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Chapter 3 Installation
Connecting to 100BASE-LX SM Ports
Connecting to 100BASE-LX SM Ports
Warning
Invisible laser radiation may be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical instruments.
Statement 1051
Warning
Avoid direct exposure to the laser beam.
Statement 1012
You can connect a 100BASE-LX port to a port on a target device by using one of
the LC fiber-optic patch cables listed in Table B-2 on page B-4. Use the Cisco part
numbers in Table B-2 to order the patch cables that you need.
Follow these steps to connect the switch to a 100BASE-LX SM device:
Caution Do not remove the dust plugs from the fiber-optic ports or the rubber caps from
the fiber-optic cable until you are ready to connect the cable. The plugs and caps
protect the fiber-optic ports and cables from contamination and ambient light.
Step 1 Remove the dust plugs from the 100BASE-LX port, as shown in Figure 3-38, and
store them for future use. Remove the rubber caps from the LC on the fiber-optic
cable. Store them for future use.
Figure 3-38 Removing Dust Plugs from 100BASE-LX Ports
87054
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Connecting to 100BASE-LX SM Ports
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Step 2 Insert the cable in a 100BASE-LX port. (See Figure 3-39.)
Figure 3-39 Connecting to a 100BASE-LX SM Port
Step 3 Insert the other cable end in an LC port on the 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 STP discovers the network topology and searches for
loops. This process can take 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 a problem with the adapter installed in the target
device. See Chapter 5, Troubleshooting, for solutions to cabling problems.
Step 5 Reconfigure and restart the target device, if necessary.
Step 6 Repeat Steps 1 through 5 to connect each port.
1Fiber-optic uplink cable
13 14
MAJ
MIN
12x
11x
1x
2x
CISCO
CA
TALY ST 2955
CONSOLE
100Base-LX
ALARMS
24V B
RTN B
34567
8
910 11 12
12AB
13 14
MAJ MIN
104924
10Base-T/100Base-TX
24V A
RTN A
1
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Chapter 3 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. The device manager 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 on Cisco.com. Through this GUI,
you can configure and monitor a switch cluster or an individual switch.
Use the CLI from the console to configure the switch as a member of a cluster
or as an individual switch. See the Catalyst 2950 and Catalyst 2955 Switch
Software Configuration Guide and the Catalyst 2950 and Catalyst 2955
Switch Command Reference on Cisco.com for information on using the CLI
with a Catalyst 2955 switch.
Start an SNMP application such as the CiscoView application.
Chapter 3 Installation
Where to Go Next
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4
Installation in a Hazardous
Environment
This chapter describes how to install your switch in a hazardous environment, to
interpret the power-on self-test (POST), and to connect the switch to other
devices. Read these topics, and perform the procedures in this order:
Preparing for Installation, page 4-2
Applying the Switch Protective Liner, page 4-13
Verifying Switch Operation, page 4-14
Wiring the External Alarm Device Relays, page 4-32
Installing the Switch on a DIN Rail, page 4-37
Installing the Switch in a Rack, page 4-42
Removing the Switch from a DIN Rail or a Rack, page 4-45
Connecting to 10/100 and 10/100/1000 Ports, page 4-47
Connecting to 100BASE-FX MM Ports, page 4-50
Connecting to 100BASE-LX SM Ports, page 4-52
Where to Go Next, page 4-54
Chapter 4 Installation in a Hazardous Environment
Preparing for Installation
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Preparing for Installation
This section provides information about these topics:
Warnings, page 4-2
EMC Regulatory Statements, page 4-8
Installation Guidelines, page 4-11
Verifying Package Contents, page 4-12
Warnings
These warnings are translated into several languages in Appendix C, Translated
Safety Warnings.
Warning
This equipment is to be installed and maintained by service personnel only as
defined by AS/NZS 3260 Clause 1.2.14.3 Service Personnel.
Statement 88
Warning
Only trained and qualified personnel should be allowed to install or replace this
equipment.
Statement 49
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
Warning
Read the installation instructions before you connect the system to its power
source.
Statement 1004
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
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Warning
Do not disconnect connections to this equipment unless power has been
removed or you have verified that the area is nonhazardous. Secure any
external connections that mate to this equipment by using screws, sliding
latches, threaded connectors, or other means provided with this product.
Substitution of components may impair suitability for Class I, Division 2.
Statement 1062
Warning
When you connect or disconnect the power and relay connector with power
applied, an electrical arc can occur. This could cause an explosion in
hazardous area installations. Be sure that power is removed from the switch
and alarm circuit. Be sure that power cannot be accidentally turned on or verify
that the area is nonhazardous before proceeding.
Failure to securely tighten the power and relay connector captive screws can
result in an electrical arc if the connector is accidentally removed.
Statement
1058
Warning
Connect the unit only to DC power source that complies with the safety
extra-low voltage (SELV) requirements in IEC 60950 based safety standards.
Statement 1033
Warning
The nominal voltage for this product is 24 V. When the switch is installed in
hazardous locations, the safe operating range of 18 to 30 VDC must be
maintained.
Statement 1060
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Warning
The switch relays are rated at 1 Amp and have a voltage limit of 30 VDC and 0.3
Amp at a voltage limit of 125 VAC. It is dangerous to exceed these limitations in
a hazardous environment.
An electrical arc can occur when you connect or disconnect the relay wires
with field side power applied. This could cause an explosion in switch
installations in a hazardous location. Before proceeding, be sure that power is
removed or the area is not hazardous.
Statement 1061
.
Warning
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
publication 60664-1), and at altitudes up to 2000 meters without derating.
Statement 1068
Warning
This equipment is supplied as open type equipment. It must be mounted
within an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The interior of the enclosure
must be accessible only by the use of a tool.
The enclosure must meet IP 54 or NEMA type 4 minimum enclosure rating
standards.
Statement 1063
Warning
Use twisted-pair supply wires suitable for 86°F (30°C) above surrounding
ambient temperature outside the enclosure.
Statement 1067
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels
of electricity. Be sure that no exposed portion of the DC-input power source
wire extends from the power and relay connector.
Statement 122
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Warning
In switch installations in a hazardous location, the DC power source could be
located away from the vicinity of the switch. be sure that power is removed and
power cannot be accidentally be turned on or the area is nonhazardous before
proceeding.
Statement 1059
Warning
If you connect or disconnect the console cable with power applied to the
switch or any device on the network, an electrical arc can occur. This could
cause an explosion in hazardous location installations. Be sure that power is
removed or the area is nonhazardous before proceeding.
To verify switch operation, perform POST on the switch in a nonhazardous
location before installation.
Statement 1065
Warning
Do not connect or disconnect cables to the ports while power is applied to the
switch or any device on the network because an electrical arc can occur. This
could cause an explosion in hazardous location installations. Be sure that
power is removed from the switch and cannot be accidentally be turned on, or
verify that the area is nonhazardous before proceeding.
Statement 1070
Warning
To prevent the switch from overheating, do not operate it in an area that
exceeds the maximum recommended ambient temperature of 140°F (60°C). To
prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around
the ventilation openings.
Statement 17C
Warning
When used in a Class I, Division 2, hazardous location, this equipment must be
mounted in a suitable enclosure with proper wiring method, for all power, input
and output wiring, that complies with the governing electrical codes and in
accordance with the authority having jurisdiction over Class I, Division 2
installations.
Statement 1066
Warning
When installing the unit, always make the ground connection first and
disconnect it last.
Statement 42
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Warning
This equipment is intended to be grounded. Ensure that the host is connected to
earth ground during normal use.
Statement 39
Warning
This equipment is intended to be grounded to comply with emission and
immunity requirements. Ensure that the switch functional ground lug is
connected to earth ground during normal use.
Statement 1064
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
Before performing any of the following procedures, ensure that power is
removed from the DC circuit. To ensure that all power is OFF, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the OFF position, and tape the switch handle of the circuit breaker in
the OFF position.
Statement 140
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
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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 180
Warning
Class 1 laser product.
Statement 1008
Warning
Class 1 LED product.
Statement 1027
Warning
Invisible laser radiation may be emitted from disconnected fibers or
connectors. Do not stare into beams or view directly with optical instruments.
Statement 1051
Warning
For diverging beams, viewing the laser output with certain optical instruments
within a distance of 100 mm may harm your eyes. For collimated beams, viewing
the laser output with certain optical instruments designed for use at a distance
may harm your eyes.
Statement 282
Warning
Avoid direct exposure to the laser beam.
Statement 1012
Caution This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D, or
non-hazardous locations only.
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EMC Regulatory Statements
This section includes specific regulatory statements about the Catalyst 2955
family of switches.
U.S.A.
U.S. regulatory information for this product is in the front matter of this manual.
Class A Notice for Taiwan and Other Traditional Chinese Markets
Warning
This is a Class A Information Product, when used in residential environment,
it may cause radio frequency interference, under such circumstances, the
user may be requested to take appropriate countermeasures.
Statement 257
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VCCI Class A Notice for Japan
Class A Warning for Korea
Warning
This is a Class A product based on the standard of the Voluntary Control
Council for Interference by Information Technology Equipment (VCCI). If this
equipment is used in a domestic environment, radio disturbance may arise.
When such trouble occurs, the user may be required to take corrective
actions.
Statement 191
Warning
This is a Class A Device and is registered for EMC requirements for industrial
use. The seller or buyer should be aware of this. If this type was sold or
purchased by mistake, it should be replaced with a residential-use type.
Statement 294
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Class A Warning for Hungary
European Zone 2 Certification
This equipment is intended for use in potentially explosive atmospheres as
defined by European Union Directive 94/9/EC. Underwriters Laboratory
International DEMKO certifies that this equipment has been found to comply with
the Essential Health and Safety Requirements relating to the design and
construction of Category 3 equipment intended for use in potentially explosive
atmospheres, given in Annex II to this Directive. Compliance with the Essential
Health and Safety Requirements has been assured by compliance with EN 50021
(1999).
Warning
This equipment is a class A product and should be used and installed properly
according to the Hungarian EMC Class A requirements (MSZEN55022). Class A
equipment is designed for typical commercial establishments for which
special conditions of installation and protection distance are used.
Statement
256
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Installation Guidelines
When determining where to place the switch, observe these guidelines.
Before installing the switch, first verify that the switch is operational by
powering it on and running POST. Follow the procedures in the Powering On
the Switch and Running POST section on page 4-16.
For 10/100 ports and 10/100/1000 ports, the cable length from a switch to an
attached device cannot exceed 328 feet (100 meters).
For 100BASE-FX multimode fiber-optic (MM) ports, the cable length from a
switch to an attached device cannot exceed 6562 feet (2 kilometers).
For 100BASE-LX single-mode fiber-optic (SM) ports, the cable length from
a switch to an attached device cannot exceed 9.375 miles (15 kilometers).
Operating environment is within the ranges listed in Appendix A, Technical
Specifications.
Clearance to front and rear panels meet these conditions:
Front-panel LEDs can be easily read.
Access to ports is sufficient for unrestricted cabling.
Front-panel direct current (DC) power and relay connector is within
reach of the connection to the DC circuit breaker.
Airflow around the switch and through the vents is unrestricted. To prevent
the switch from overheating, there must be a minimum of 3 inches between
any other device and the top, bottom, or sides of the switch.
Temperature surrounding the unit does not exceed 140°F (60°C).
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Cataly