Cisco has more than 200 offices worldwide.
Addresses, phone numbers, and fax numbers
are listed on the Cisco website at
www.cisco.com/go/offices.
Last Revised: November 4, 2013
Text Part Number: OL-18712-01
Page 2
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: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If the equipment causes interference to radio or television reception, which can be
determined by turning the equipment off and on, users are encouraged to try to correct the interference by using one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Modifications to this product not authorized by Cisco could void the FCC approval and negate your authority to operate the product.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH
ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF
DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING,
WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO
OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this
URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned 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. (1110R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display
output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in
illustrative content is unintentional and coincidental.
Cisco 2901 Chassis1-2
Cisco 2911 Chassis1-4
Cisco 2921 and Cisco 2951 Chassis1-6
Cisco 3900 Series Chassis1-8
Locating the Serial Number, PID, VID and CLEI1-12
Labels on Cisco 29011-13
Labels on Cisco 29111-14
Labels on Cisco 2921 and Cisco 29511-15
Labels on Cisco 3925 and Cisco 39451-15
For Additional Help Locating Labels on the Router1-16
Hardware Features1-17
Built-in Interface Ports1-17
Gigabit Ethernet Ports1-17
USB Serial Console Port1-18
Removable and Interchangeable Modules and Cards1-18
Services Performance Engine1-21
Service Modules1-21
Enhanced High-Speed WAN Interface Cards1-21
Integrated Service Modules1-22
Packet Voice Data Modules1-22
Memory1-22
Power Supplies1-24
Module and Router Power Consumption1-25
Fans, Ventilation, and Airflow1-25
Real-Time Clock1-27
Secure Key1-28
Cryptographic Accelerator1-28
Slot, Port, and Interface Information1-28
LED Indicators1-30
Specifications1-33
Periodic Inspection and Cleaning1-47
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Contents
CHAPTER
2Preparing for Router Installation2-1
Safety Recommendations2-2
Safety with Electricity2-3
Preventing Electrostatic Discharge Damage2-4
General Site Requirements2-4
Rack Requirements2-4
Router Environmental Requirements2-5
Power Guidelines and Requirements2-6
Network Cabling Specifications2-6
Console and Auxiliary Port Considerations2-6
Console Port Connections2-6
Auxiliary Port Connections2-7
Preparing for Network Connections2-9
Ethernet Connections2-9
Serial Connections2-9
ISDN BRI Connections2-11
CSU/DSU Connections2-12
Required Tools and Equipment for Installation and Maintenance2-12
CHAPTER
Installation Checklist2-14
Creating a Site Log2-15
3Installing and Connecting the Router3-1
What you Need to Know3-3
Before you Begin3-3
Unpacking the Router3-4
Installing the Router3-4
Rack-Mounting the Chassis3-5
Attaching Rack-Mount Brackets to Cisco 2901 Routers3-5
Attaching Rack-Mount Brackets to Cisco 2911, Cisco 2921, and Cisco 2951 Routers3-6
Attaching Rack-Mount Brackets to Cisco 3900 Series Routers3-8
Mounting the Router in a Rack3-10
Grounding the Chassis3-12
Setting the Chassis on a Desktop3-12
Mounting a Cisco 2901 or 2911 Router on a Wall3-13
Attaching Brackets to the Router for Wall Mounting3-13
Attaching the Router to a Wall3-13
Chassis Grounding3-15
Connecting Power3-18
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Connecting to AC Power3-18
Connecting to DC Power3-19
DC Wiring Requirements for Cisco 2911, 2921, and 2951 Routers3-19
Wiring Procedure for DC Input on Cisco 2911, 2921, and 2951 Routers3-20
Approved Scenarios and Scenarios Not Approved for Dual DC Power Supply Configuration on
Cisco 2911, 2921, and 2951 Routers
DC Wiring Requirements for Cisco 3900 Series Routers3-24
Cisco 3900 Series Router Wiring Procedure for DC Input3-26
Dual DC Power Supply Configuration in Cisco 3925 and Cisco 3925-NOVPN Routers3-28
Connecting to Backup Power3-30
Connecting to a Console Terminal or Modem3-30
Connecting to the Serial Port with Microsoft Windows3-30
Connecting to the Console Port with Mac OS X3-34
Connecting to the Console Port with Linux3-35
Installing the Cisco Microsoft Windows USB Device Driver3-35
Installing the Cisco Microsoft Windows XP USB Driver3-35
Installing the Cisco Microsoft Windows 2000 USB Driver3-36
Installing the Cisco Microsoft Windows Vista USB Driver3-36
3-23
Contents
CHAPTER
Uninstalling the Cisco Microsoft Windows USB Driver3-37
Uninstalling the Cisco Microsoft Windows XP and 2000 USB Driver3-37
Uninstalling the Cisco Microsoft Windows Vista USB Driver3-37
Connecting to the Auxiliary Port3-38
Connecting WAN, LAN, and Voice Interfaces3-41
Ports and Cabling3-43
Connection Procedures and Precautions3-44
4Configuring the Router4-1
Powering up the Router4-1
Checklist for Power Up4-1
Power Up Procedure4-2
Verifying the Front Panel LED Indications4-4
Performing the Initial Configuration on the Router4-4
Using Cisco Setup Command Facility4-4
Completing the Configuration4-7
Using Cisco Configuration Professional Express4-8
Using Cisco IOS CLI—Manual Configuration4-8
Configuring the Router Hostname4-9
Configuring the Enable and Enable Secret Passwords4-10
Configuring the Console Idle Privileged EXEC Timeout4-11
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Contents
Configuring Gigabit Ethernet Interfaces4-13
Specifying a Default Route or Gateway of Last Resort4-15
Configuring IP Routing and IP Protocols4-15
Default Routes4-15
Default Network4-15
Gateway of Last Resort4-16
Configuring Virtual Terminal Lines for Remote Console Access4-18
Configuring the Auxiliary Line4-19
Verifying Network Connectivity4-21
Saving Your Router Configuration4-22
Saving Backup Copies of Configuration and System Image4-22
Verifying the Initial Configuration4-24
CHAPTER
5Installing and Upgrading Internal Modules and FRUs5-1
Safety Warnings5-2
Accessing Internal Modules5-4
Removing and Replacing the Chassis Cover5-4
Removing and Replacing the Services Performance Engine5-6
Locating Internal Modules5-7
Installing and Removing DRAM DIMMs5-13
Locating and Orienting DRAM DIMM5-13
Removing a DRAM DIMM5-14
Installing a DRAM DIMM5-15
Installing and Removing ISMs5-16
Software Requirement for ISMs5-17
Locating an ISM5-17
Removing an ISM5-17
Installing an ISM5-18
Verifying ISM Installation5-20
Installing and Removing PVDM35-20
PVDM3 Location and Orientation5-21
Removing a PVDM35-21
Installing a PVDM35-22
Installing and Removing PVDM2s5-23
Replacing Power Supplies and Redundant Power Supplies5-28
Replacing the Cisco 2901 Router Power Supply5-30
Replacing the Cisco 2911 Router Power Supply5-32
Installing and Removing the Cisco 2911 Router Optional DC Power Supply5-33
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Contents
Installing the 2911 DC Power Supply5-33
Removing the 2911 DC Power Supply5-34
Installing the Cisco 2911 Router Power Supply Blank5-34
Replacing the Cisco 2911 Router Redundant Power Supply5-36
Replacing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Power Supply5-36
Replacing the Power Supply on the Cisco 2921 and Cisco 2951 Routers5-37
Replacing the Power Supply on the Cisco 3900 Series Routers5-38
Inserting POE supply in an Ethernet Switch Network Module5-39
Installing and Removing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Optional DC Power
Supply
Installing and Removing a Redundant Power Supply Adapter5-42
5-40
Installing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Optional DC Power Supply5-41
Removing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Optional DC Power Supply5-41
Installing an RPS Adapter5-43
Removing an RPS Adapter5-43
CHAPTER
Replacing a Fan Tray or Air Filter5-45
Replacing the Cisco 2911 Fan Tray5-45
Replacing the Cisco 2911 Air Filter5-46
Replacing the Cisco 2921 or 2951 Fan Tray5-47
Replacing the Cisco 3900 Series Fan Tray5-48
Replacing the Cisco 3900 Series Air Filter5-49
Installing a FIPS Louver5-51
2911 Front to Back Air Flow Converter5-52
Removing and Installing CompactFlash Memory Cards5-59
Preventing Electrostatic Discharge Damage5-59
Removing a CompactFlash Memory Card5-59
Installing a CompactFlash Memory Card5-61
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Contents
Removing a Voice ModuleA-2
Inserting a Data or Voice ModuleA-2
Hot-Swapping ProceduresA-3
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Preface
This preface describes the objectives, audience, organization and conventions of this guide, and the
references that accompany this document set. The following sections are provided:
• Objectives, page i
• Audience, page i
Objectives
Audience
• Organization, page ii
• Conventions, page iii
• Related Documentation, page ix
• Searching for Cisco Documents, page xi
This guide explains how to install, connect, and perform initial configurations for the Cisco 2900 series
and Cisco 3900 series Integrated Services Routers (ISRs). Some information may not apply to your
specific router model.
NoteFor warranty, service, and support information, see the “Cisco Warranty Terms” section in the
Readme First for the Cisco 1900 Series, 2900 Series, and 3900 Series Integrated Services
Routers document that was shipped with your router.
This guide is intended for Cisco equipment providers and service persons who are technically
knowledgeable and familiar with Cisco routers and Cisco IOS software and features. They would
understand how to install, configure, and maintain the router, and they should be familiar with electronic
circuitry and wiring practices, and have experience as an electronic or electromechanical technician.
This guide identifies certain procedures that should be performed only by trained and qualified
personnel.
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Organization
This guide includes the following chapters:
ChapterTitle Description
1Overview of the RoutersDescribes the router chassis views, information
2Preparing for Router InstallationDescribes site requirements and the equipment
3Installing and Connecting the Router Describes how to install and connect the router to
for locating the serial number, PID
Also includes general hardware features, slot,
port, and interface information; and LED
indicators.
needed to install the router.
LAN, WAN, and Voice networks.
1
, and UDI2.
4Configuring the RouterDescribes how to power up the router and
perform the initial configuration.
5Installing and Upgrading Internal
Modules and FRUs
Describes how to install and upgrade internal
modules and field replaceable units
3
on the
router.
6Getting Software Licenses for the
Router
7Online Insertion Removal and
Hot-Swapping
1. PID = Product ID
2. UID = Universal Device Identifier
3. FRU = Field Replaceable Unit
4. OIR = Online Insertion and Removal
Describes how to purchase a PAK and activate
software licenses on the router.
Describes how to remove and replace data and
voice modules using the online insertion and
removal
4
procedure.
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Conventions
This document uses the following conventions:
ConventionIndication
bold fontCommands and keywords and user-entered text appear in bold font.
italic fontDocument titles, new or emphasized terms, and arguments for which you supply
values are in italic font.
[ ]Elements in square brackets are optional.
{x | y | z }Required alternative keywords are grouped in braces and separated by
vertical bars.
[ x | y | z ]Optional alternative keywords are grouped in brackets and separated by
vertical bars.
stringA nonquoted set of characters. Do not use quotation marks around the string or
the string will include the quotation marks.
courier fontTerminal sessions and information the system displays appear in courier font.
< >Nonprinting characters such as passwords are in angle brackets.
[ ]Default responses to system prompts are in square brackets.
!, #An exclamation point (!) or a pound sign (#) at the beginning of a line of code
indicates a comment line.
NoteMeans reader take note.
TipMeans the following information will help you solve a problem.
CautionMeans reader be careful. In this situation, you might perform an action that could result in equipment
damage or loss of data.
TimesaverMeans the described action saves time. You can save time by performing the action described in
the paragraph.
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Warning
Waarschuwing
Varoitus
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
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
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.
Attention
Warnung
SÄILYTÄ NÄMÄ OHJEET
IMPORTANTES INFORMATIONS DE SÉCURITÉ
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant
entraîner des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez
conscient des dangers liés aux circuits électriques et familiarisez-vous avec les procédures
couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions des
avertissements figurant dans les consignes de sécurité traduites qui accompagnent cet appareil,
référez-vous au numéro de l'instruction situé à la fin de chaque avertissement.
CONSERVEZ CES INFORMATIONS
WICHTIGE SICHERHEITSHINWEISE
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu Verletzungen führen
kann. Machen Sie sich vor der Arbeit mit Geräten mit den Gefahren elektrischer Schaltungen und
den üblichen Verfahren zur Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder
Warnung angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den übersetzten
Sicherheitshinweisen, die zusammen mit diesem Gerät ausgeliefert wurden.
BEWAHREN SIE DIESE HINWEISE GUT AUF.
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Avvertenza
Advarsel
Aviso
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
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
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.
¡Advertencia!
Varning!
GUARDE ESTAS INSTRUÇÕES
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
VIKTIGA SÄKERHETSANVISNINGAR
Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och
känna till vanliga förfaranden för att förebygga olyckor. Använd det nummer som finns i slutet av
varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna
anordning.
SPARA DESSA ANVISNINGAR
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Aviso
Advarsel
INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões
corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os
circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o
número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de
segurança traduzidos que acompanham o dispositivo.
GUARDE ESTAS INSTRUÇÕES
VIGTIGE SIKKERHEDSANVISNINGER
Dette advarselssymbol betyder fare. Du befinder dig i en situation med risiko for
legemesbeskadigelse. Før du begynder arbejde på udstyr, skal du være opmærksom på de
involverede risici, der er ved elektriske kredsløb, og du skal sætte dig ind i standardprocedurer til
undgåelse af ulykker. Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de
oversatte advarsler, der fulgte med denne enhed.
GEM DISSE ANVISNINGER
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Warning
Warning
Warning
Warning
Warning
When installing the product, please use the provided or designated connection cables/power
cables/AC adaptors. Using any other cables/adaptors could cause a malfunction or a fire. Electrical
Appliance and Material Safety Law prohibits the use of UL-certified cables (that have the “UL” shown
on the code) for any other electrical devices than products designated by CISCO. The use of cables
that are certified by Electrical Appliance and Material Safety Law (that have “PSE” shown on the
code) is not limited to CISCO-designated products. Statement 371.
There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with
the same or equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer’s instructions.
Do not use this product near water; for example, near a bath tub, wash bowl, kitchen sink or laundry
tub, in a wet basement, or near a swimming pool.
Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
Statement 1036
Statement 1015
Statement 1035
Statement 1037
Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote
risk of electric shock from lightning.
Related Documentation
In addition to Cisco 2900 series and 3900 series Hardware Installation Guide (this document), the
following references are included in this documentation set.
Statement 1038
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NoteCisco IOS software release 15.0(1)M is the next IOS release
following the Cisco IOS 12.4(24)T release.
• Cisco IOS Command Reference for Cisco Aironet Access Points and
Bridges, versions 12.4(10b) JA and 12.3(8) JEC
Vo i c e
• Wireless LAN Controllers
• Unified Wireless LAN Access Points
• Cisco IOS Voice Port Configuration Guide
• SCCP Controlled Analog (FXS) Ports with Supplementary Features in
Cisco IOS Gateways
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Searching for Cisco Documents
To search an HTML document using a web browser, press Ctrl-F (Windows) or Cmd-F (Apple). In most
browsers, the option to search whole words only, invoke case sensitivity, or search forward and backward
is also available.
To search a PDF document in Adobe Reader, use the basic Find toolbar (Ctrl-F) or the Full Reader
Search window (Shift-Ctrl-F). Use the Find toolbar to find words or phrases within a specific document.
Use the Full Reader Search window to search multiple PDF files simultaneously and to change case
sensitivity and other options. The Adobe Reader online help has more information about how to search
PDF documents.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and
revised Cisco technical documentation, at:
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS Version 2.0
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CHAP T E R
1
Overview of the Routers
Cisco Integrated Services Routers Generation 2 (ISR G2) offer data functionality through Gigabit
Ethernet ports and security functionality with a virtual private network (VPN) accelerator on the
motherboard. Additional security features are available with add-on hardware and software.
Cisco 2900 series and Cisco 3900 series routers also provide voice IP telephony with digital signal
processor (DSP) capability; and voice gateway, DSP farm, IP-to-IP gateway, Cisco Unified
Communications Manager Express (CUCME) via Cisco IOS. Cisco Unity Express (CUE) is provided
through the use of add-on hardware.
This series of ISRs have new slots that support next generation Enhanced High-Speed WAN Interface
Cards (EHWICs), Internal Services Modules (ISMs), Packet Voice Data Modules (PVDM3s), Service
Modules (SMs), and Services Performance Engines (SPEs).
Access to the Cisco Multi-Gigabit Fabric (MGF) facilitates connection between switch ports on the ISR
without utilizing all of the external ports. A logical GE interface on the ISR connects external and
internal modules through the MGF for improved LAN and WAN switching.
Table 1-1ISR G2 Models
SeriesRouters
Cisco 2900
Cisco 3900
The following sections are provided in this chapter:
• Chassis Views, page 1-2
• Locating the Serial Number, PID, VID and CLEI, page 1-12
• Hardware Features, page 1-17
• Slot, Port, and Interface Information, page 1-28
• 2901
• 2911
• 2921
• 2951
• 3925
• 3925E
• 3945
• 3945E
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Page 22
Chassis Views
• LED Indicators, page 1-30
• Specifications, page 1-33
Chassis Views
This section contains views of the front and back panels of the Cisco 2900 series and Cisco 3900 series
routers, showing locations of the power and signal interfaces, module slots, status indicators, and chassis
identification labels.
NoteRouters support the following slot types: Service Modules (SMs), Enhanced High-Speed Interface Card
(EHWICs), high-speed WAN interface cards (HWICs), voice WAN interface cards (VWICs), WAN
interface cards (WICs), Internal Services Modules (ISMs), and packet voice DSP modules (PVDM3s).
However, some router models do not support all of these media types. See the router model descriptions
for more information.
Cisco 2900 Series ISRs
• Cisco 2901 Chassis, page 1-2
• Cisco 2911 Chassis, page 1-4
Chapter 1 Overview of the Routers
• Cisco 2921 and Cisco 2951 Chassis, page 1-6
Cisco 3900 Series ISRs
• Cisco 3900 Series Chassis, page 1-8
Cisco 2901 Chassis
Figure 1-1— Front panel
Figure 1-2 on page 1-3— Back panel
Figure 1-3 on page 1-4— Back panel LEDs
Figure 1-1Front Panel of the Cisco 2901 Router
SYS ACT
POE
1 2 3
1SYS
3POE
1
3
5On/off switch6AC power connector
1. System
2. Activity
Cisco 2900 Series
4 56
2ACT
2
4AC OK4 (only on AC PS, not AC-POE PS)
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ISM
PVDM1 PVDM0
EN
EN
S
L
USB
1
0
CONSOLE
AUX
G
E
0
/
0
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
2901
S
L
GE 0/1
250958
3
6
2
7
1
8
99
4
EHWIC 3
EHWIC 2EHWIC 1EHWIC 0
CF 1
CF 0
5
3. POE = power over Ethernet.
4. LED goes off if the AC power fails or is disconnected. It does not go on and off with the power switch.
Figure 1-2Back Panel Slots and Connectors of the Cisco 2901 Router
Chassis Views
1EHWIC slots 1 0, 1, 2, and 3 (0, Far right)
2USB2 serial port
3Aux port4RJ-45 serial console port
510/100/1000 Ethernet ports (GE0/1)610/100/1000 Ethernet port (GE0/0)
7Ground8USB0 and USB1 (1, Top)
9CompactFlash
1. DW-EHWICs can fit into slot 0 and 1, and into slot 2 and 3. EHWIC slots support HWIC, VIC, and WIC.
2. USB = Universal serial bus
3. Only Advanced Capability CompactFlash (CF) purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series
ISRs. Legacy CF can impact and severely degrade performance in these routers. See the “Memory” section on page 1-22.
When legacy CF is inserted, the following error message appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation
can impact and severely degrade performance of the system. Please use supported
compact flash cards only.
3
0 and 1
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Chassis Views
ISM
PVDM1 PVDM0
EN
EN
S
L
USB
CONSOLE
AUX
G
E
0
/
0
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
CF 1
CF 0
1
0
250962
4
5
67
1
EHWIC 3
EHWIC 2EHWIC 1EHWIC 0
S
L
GE 0/1
2901
3
2
Figure 1-3Back Panel LEDs of Cisco 2901 Router
Chapter 1 Overview of the Routers
1 CompactFlash 0 and 1 (0, Right)2 ISM
1
3 PVDM3 0 and 1 (0, Right)4 EN (Enable USB console)
5 EN (Enable RJ-45 console)6 S (Speed)
7 L (Link)
1. ISM = Internal Services Module
Cisco 2911 Chassis
Figure 1-4— Front panel
Figure 1-5 on page 1-5— Back panel
Figure 1-6 on page 1-6 — Back panel LEDs
Figure 1-4Front Panel of the Cisco 2911 Router
6 8
4
5
SYS ACT
7
POE RPS
PS
Cisco 2900 Series
1
23
1AC OK
1
3AC power connector4SYS
5ACT6POE
7RPS
2
9Optional RPS adapter (blank panel shown)
1-4
Cisco 2900 Series and 3900 Series Hardware Installation Guide
9
2On/off switch
3
8PS
250971
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Chapter 1 Overview of the Routers
ISM
PVDM1 PVDM0
EN
EN
S
L
S
L
USB
1
CONSOLE
AUX
GE 0/1
GE 0/2
G
E
0
/
0
0
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
250972
3
2
1
10
11 13
12 12
4
EHWIC 3
EHWIC 2EHWIC 1EHWIC 0
CF 1
CF 0
5
6
7
8
9
2911
1. LED goes off if the AC power fails or is disconnected. It does not go on and off with the power switch
2. RPS = Redundant Power Supply
3. PS = power supply
Figure 1-5Back Panel of the Cisco 2911 Router
Chassis Views
1EHWIC slots1 0, 1, 2, and 3 (0, Far right)
2USB serial port
3AUX4RJ-45 serial console port
510/100/1000 Ethernet port (GE0/0)610/100/1000 Ethernet port (GE0/1)
710/100/1000 Ethernet port (GE0/2)8USB 0
9USB 110 Ground
11 AC or DC or AC-POE Power Module12 CompactFlash
2
0 and 1 (0, Right)
13 Service module3 slot 1
1. Double-wide EHWICs can fit into slot 0 and 1, and into slot 2 and 3. EHWIC slots support HWIC, VIC, and WIC.
2. Only Advanced Capability CompactFlash (CF) purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series ISRs. Legacy CF can impact
and several degrade performance in these routers. See the “Memory” section on page 1-22. When legacy CF is inserted, the following error message
appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and
severely degrade performance of the system. Please use supported compact flash cards only.
3. Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules.
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Chassis Views
ISM
EN
EN
S
L
S
L
USB
1
0
CONSOLE
AUX
GE 0/1
GE 0/2
G
E
0
/
0
250990
2
4
5
67
1
EHWIC 3
EHWIC 2EHWIC 1EHWIC 0
CF 0
CF 1
PVDM1 PVDM0
3
2911
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
Cisco 2900 Series
SYS ACT
POE RPS
PS
250899
1
5
6
7
9
8
4
2 3
Figure 1-6Back Panel LEDs of the Cisco 2911 Router
Chapter 1 Overview of the Routers
1CompactFlash 0 and 1 (0, Far right)2ISM
3PVDM3
4EN (Enable USB console)
1
PVDM 0, 1, (0, Far right LED)
5EN (Enable RJ-45 console)6S (Speed)
7L (Link)
1. Integrated Service Module (ISM)
Cisco 2921 and Cisco 2951 Chassis
Figure 1-7 on page 1-6— Front panel
Figure 1-8 on page 1-7— Back panel
Figure 1-9 on page 1-8— Back panel LEDs
Figure 1-7Front Panel of the Cisco 2921 and 2951 Routers
1AC OK
1
3AC power connector4Optional RPS adapter (Blank panel shown)
1-6
Cisco 2900 Series and 3900 Series Hardware Installation Guide
2Power On/off switch
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DO NOT REMOVE DURING
NETWORKING OPERATION
ISM
PVDM2 PVDM1 PVDM0
2
1
EN
EN
SFP
S
EN
S
L
S
L
USB
1
0
CONSOLE
AUX
GE 0/1
GE 0/2
G
E
0
/
0
DO NOT REMOVE DURING
NETWORKING OPERATION
250900
3
6
2
5
7
9
1
8
1010
1111
4
EHWIC 3
EHWIC 2EHWIC 1EHWIC 0
CF 1
CF 0
2921
SM SLOT
1
5SYS6ACT
7POE8RPS
2
9PS
1. LED goes off if the AC power fails or is disconnected. It does not go on and off with the power switch.
2. Power supply (PS)
Figure 1-8Back Panel Slots and Connectors on the Cisco 2921 and 2951 Routers
Chassis Views
1EHWIC slots1 0,1,2, and 3 (0, Far right)
2USB serial console port
3AUX port4RJ-45 serial console port
5SFP610/100/1000 Ethernet ports (GE 0/1 and GE 0/2
(GE 0/2, Top)
710/100/1000 Ethernet port GE 0/08Ground
9USB0 and USB1 (1, Top)10 Service module slots
2
SM1 and SM2 (1, Right on 2951),
(1, left on 2921)
11 CompactFlash3 0 and 1 (0, Right)
1. Double-wide EHWICs can fit into slot 0 and 1, and into slot 2 and 3. EHWIC slots support HWIC, VIC, and WIC.
2. Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. Cisco 2921 supports only one service module in the left slot.
3. Only Advanced Capability CF purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series ISRs. Legacy CF will not operate in these
routers. When legacy CF is inserted, the following error message appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and
severely degrade performance of the system. Please use supported compact flash cards only.
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Chassis Views
Figure 1-9Back Panel LEDS of the Cisco 2921 and 2951 Routers
EHWIC 3
DO NOT REMOVE DURING
NETWORKING OPERATION
CF 1
EHWIC 2EHWIC 1EHWIC 0
DO NOT REMOVE DURING
DO NOT REMOVE DURING NETWORKING OPERATION
NETWORKING OPERATION
CF 0
PVDM2 PVDM1 PVDM0
ISM
Chapter 1 Overview of the Routers
8 9
S
AUX
SFP
E
N
EN
EN
S
CONSOLE
GE 0/2
S
GE 0/1
L
G
E
L
0
/
0
2921
1
USB
0
SM SLOT
1
3
1
2
1CompactFlash 0 and 1 (0, Right)2ISM
1
4
3PVDM3 0,1, and 2 (0, Right)4EN (Enable USB console)
5EN (Enable RJ-45 console)6SFP
2
EN
7SFP S8S (Speed)
9L (Link)
1. ISM = Internal Services Module
2. SFP = small-form-factor pluggable
Cisco 3900 Series Chassis
Cisco 3900 series ISRs are shipped with Services Performance Engines (SPEs) pre-installed in the
router. See the “Services Performance Engine” section on page 1-21 for models and support information.
Table 1-2Services Performance Engines
RouterServices Performance Engine
Cisco 3925Services Performance Engine 100
Cisco 3945Services Performance Engine 150
Cisco 3925EServices Performance Engine 200
Cisco 3945EServices Performance Engine 250
6
5
7
250901
Figure 1-10 shows the Cisco 3925 and Cisco 3945 front panels.
Cisco 3925 and Cisco 3945 (SPE 100 and SPE 150)
• Back panel slots and connectors— Figure 1-11
• Back panel LEDs— Figure 1-12
Cisco 3925E and Cisco 3945E (SPE 200 or SPE 250)
• Back panel slots and connectors— Figure 1-13
• Back panel LEDs— Figure 1-14
Cisco 2900 Series and 3900 Series Hardware Installation Guide
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Chapter 1 Overview of the Routers
Cisco 3900 Series
SYS ACT
POE
BOOST
PS2 PS1
PS1
PS2
247132
1 23123
4
5
6
7
8
Figure 1-10Front Panel of the Cisco 3900 Series ISRs
Chassis Views
1AC OK
1
2On/off switch
3Power connector4SYS status LED
5ACT status LED6POE
7Boost8PS1 (Right), PS2 (Left)
1. LED goes off if the AC power fails or is disconnected. It does not go on and off with the power switch.
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Chapter 1 Overview of the Routers
2
1
4
3
ISM
EN
EN
SFP
S
E
N
S
L
S
L
USB
1
0
CONSOLE
AUX
GE 0/1
GE 0/2
G
E
0
/
0
SFP
S
E
N
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
C3900-SPE100/K9
PVDM3 PVDM2 PVDM1 PVDM0
250917
3
5
2
6
9
1
1111
7
4
8
1010
EHWIC 3
EHWIC 2EHWIC 1EHWIC 0
CF1
CF0
3945/3925
SM SLOTS
SPE
Chassis Views
Figure 1-11Back Panel Slots and Connectors for Cisco 3925 and 3945 (SPE 100 and SPE 150)
1EHWIC slots1 0, 1, 2 and 3 (0, Far right)
2USB serial console port
3AUX port4RJ-45 serial console port
5SFP1 and SFP2 (2, Top)610/100/1000 Ethernet ports GE 0/1 and GE 0/2
(GE 0/2,Top)
710/100/1000 Ethernet port GE0/08USB0 and USB1 (1, Top)
9Ground10 Cisco 3945 Service module slots
2
, 1 (Lower right), 2
(Lower left), 3 (Top right), and 4 (Top left)
Cisco 3925 Service module slots
3
, 1 (Lower left)4, 2 (Top
left)
11 CompactFlash5 0 and 1 (0, Far right)
1. Double-wide EHWICs can fit into slot 0 and 1, and into slot 2 and 3. EHWIC slots support HWIC, VIC, and WIC.
2. Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. See Table 1-5 for more router slot and module configurations.
3. Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. Double wide service modules install in the top slots. See Table 1-5 for more router slot and module configurations.
4. One single-wide in slot 1 (lower left). Lower right panel cannot be removed. See Table 1-5 for more router slot and module configurations.
5. Only Advanced Capability CompactFlash (CF) purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series ISRs. Legacy CF can impact
and severely degrade performance in these routers. See the “Memory” section on page 1-22. When legacy CF is inserted, the following error message
appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and
severely degrade performance of the system. Please use supported compact flash cards only.
Cisco 2900 Series and 3900 Series Hardware Installation Guide
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2
1
EHWIC 2
EHWIC 1EHWIC 0
CF 1
CF 0
PVDM2 PVDM1 PVDM0
4
3
3945/3925
SM SLOTS
SPE
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
247133
9
1
1111
1010
3
5
C3900-SPE200/K9
2
76
4
8
Figure 1-12Back Panel LEDS on Services Performance Engine 100 and SPE 150
EHWIC 3
DO NOT REMOVE DURING
NETWORKING OPERATION
CF1
EHWIC 2EHWIC 1EHWIC 0
DO NOT REMOVE DURING
NETWORKING OPERATION
CF0
PVDM3 PVDM2 PVDM1 PVDM0
ISM
C3900-SPE100/K9
Chassis Views
8 9
6
7
S
AUX
EN
EN
CONSOLE
GE0/2
SFP
S
E
N
S
SFP
S
E
N
GE 0/1
L
G
E
L
0
/
0
1
USB
0
250918
3
1
2
1CompactFlash 0 and 1 (0, Far right)2ISM
1
4
5
3PVDM3 0,1, 2, and 3 (0, Far right LED)4EN (Enable USB console)
5EN (Enable RJ-45 console)6SFP S
7SFP EN8S (Speed)
9L (Link)
1. ISM = Internal Services Module
Figure 1-13Back Panel Slots/Connectors for Cisco 3925E and 3945E (SPE 200 or SPE 250)
7
6
1EHWIC slots
3AUX port4RJ-45 serial console port
510/100/1000 Ethernet ports (GE 0/3, Top; GE 0/2,
1
0,1, and 2 (0, Far right)2USB serial console port
Bottom)
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Bottom)
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Chapter 1 Overview of the Routers
EHWIC 2
EHWIC 1EHWIC 0
CF 1
CF 0
DO NOT REMOVE DURING
NETWORKING OPERATION
DO NOT REMOVE DURING
NETWORKING OPERATION
PVDM2 PVDM1 PVDM0
247134
3
4
2
1
5 6
6
5
78
C3900-SPE200/K9
Locating the Serial Number, PID, VID and CLEI
7SFP 1 and SFP 2 (1, Top)8USB 0 and USB 1 (1, Left)
9Ground10 Cisco 3945 Service module slots
2
, 1 (Lower right), 2
(Lower left), 3 (Top right), and 4 (Top left)
Cisco 3925 Service module slots
3
, 1 (Lower left)4, 2 (Top
left)
11 CompactFlash
1. Slot 0 supports WIC/VIC, HWIC, and EHWIC.
Slot 1 supports WIC/VIC, HWIC, EHWIC, DWHIC, and EDHWIC.
Slot 2 supports WIC/VIC, HWIC, and EHWIC.
2. Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. See Table 1-5 for router slot and module configurations.
3. Service module slots support legacy network modules when inserted with an adapter. See the router product page at Cisco.com for a list of supported
modules. See Table 1-5 for router slot and module configurations.
4. One single-wide in slot 1 (lower left). Lower right panel cannot be removed. See Table 1-5 for more router slot and module configurations.
5. Only Advanced Capability CF purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series ISRs. Legacy CF will not operate in these
routers. When legacy CF is inserted, the following error message appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and
severely degrade performance of the system. Please use supported compact flash cards only.
5
1 and 0 (0, Far right)
Figure 1-14Back Panel LEDS on Services Performance Engine 200 and 250
1CompactFlash 0 and 1 (0, Far right)2PVDM3 0,1, and 2 (0, Far right LED)
3EN (Enable USB console)4EN (Enable RJ-45 console)
5SFP S6SFP EN
7S (Speed)8L (Link)
Locating the Serial Number, PID, VID and CLEI
Software License
To obtain a software license, you need a product authorization key (PAK) and the unique device
identifier (UDI) of the device where the license will be installed.
The serial number (SN), product ID (PID), version ID (VID), and Common Language Equipment
Identifier (CLEI) are printed on a label on the back of the router or on a label tray located on the router
chassis or motherboard. The UDI can be viewed using the show license udi command in privileged Exec
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250959
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DO NOT REMOVE DURING
NETWORK OPERATION
2
1
4
3
mode in Cisco Internet Operating System (IOS) software. For additional information on the UDI or how
to obtain a PAK, see the Cisco Software Activation on Integrated Services Routers document at
Cisco.com.
The UDI has two main components:
• Product ID (PID)
• Serial number (SN)
Refer to these sections to locate labels on Cisco 2900 series and 3900 series ISRG2 routers:
Cisco 2900 Series
• Labels on Cisco 2901, page 1-13
• Labels on Cisco 2911, page 1-14
• Labels on Cisco 2921 and Cisco 2951, page 1-15
Cisco 3900 Series
• Labels on Cisco 3925 and Cisco 3945, page 1-15
Locating the Serial Number, PID, VID and CLEI
Labels on Cisco 2901
Figure 1-15 shows the location of the labels on the Cisco 2901 router.
Figure 1-15Labels Location on the Cisco 2901 Router
LabelDescription
1Product ID
2Serial Number
3Product ID/Version ID
4Common Language Equipment Identifier
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Locating the Serial Number, PID, VID and CLEI
Labels on Cisco 2911
Figure 1-16 shows the location of the labels on the Cisco 2911 router.
Figure 1-16Labels Location on the Cisco 2911 Router
DO NOT REMOVE DURING
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DO NOT REMOVE DURING
NETWORK OPERATION
Chapter 1 Overview of the Routers
2
1
3
4
250976
LabelDescription
1Product ID
2Serial Number
3PID/VID
4CLEI
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Labels on Cisco 2921 and Cisco 2951
Figure 1-17 shows the location of the labels on the Cisco 2921 and Cisco 2951 routers.
Figure 1-17Label Location on the Cisco 2921 and Cisco 2951 Routers
1
4
DO NOT REMOVE DURING
NETWORK OPERATION
DO NOT REMOVE DURING
NETWORK OPERATION
Locating the Serial Number, PID, VID and CLEI
2
3
250951
LabelDescription
1Product ID
2Serial Number
3PID/VID
4CLEI
Labels on Cisco 3925 and Cisco 3945
Figure 1-18 shows the two locations where labels are located on Cisco 3900 ISRs. There are labels on
the router chassis and on the Services Performance Engine (SPE).
NoteUse the serial number on the SPE label to obtain a PAK.
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Locating the Serial Number, PID, VID and CLEI
Figure 1-18Labels Location(s) on Cisco 3900 ISRs
DO NOT REMOVE DURING
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DO NOT REMOVE DURING
NETWORK OPERATION
1
Chapter 1 Overview of the Routers
2
3
4
Table 1-3Labels on Cisco 3900 Routers and SPE
Label Description
1SPE PID
2SPE Serial Number
3SPE PID/VID
4SPE CLEI
5Chassis CLEI
6Chassis Serial Number
7Chassis PID/VID
For Additional Help Locating Labels on the Router
Use the Cisco Product Identification (CPI) tool to find labels on the router. It provides detailed
illustrations and descriptions of where the labels are located on Cisco products. It includes the following
features:
• A search option that allows browsing for models by using a tree-structured product hierarchy
6
5
250952
7
• A search field on the final results page that makes it easier to look up multiple products
• End-of-sale products clearly identified in results lists
The tool streamlines the process of locating serial number labels and identifying products. Serial number
information expedites the entitlement process and is important for access to support services.
The Cisco Product Identification tool can be accessed at the following URL:
http://tools.cisco.com/Support/CPI/index.do
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Chapter 1 Overview of the Routers
Hardware Features
This section describes the hardware features in Cisco 2900 series and Cisco 3900 series routers.
• Built-in Interface Ports, page 1-17
• Removable and Interchangeable Modules and Cards, page 1-18
• Packet Voice Data Modules, page 1-22
• Power Supplies, page 1-24
• Module and Router Power Consumption, page 1-25
• Fans, Ventilation, and Airflow, page 1-25
• Real-Time Clock, page 1-27
• Secure Key, page 1-28
• Cryptographic Accelerator, page 1-28
Built-in Interface Ports
Hardware Features
Table 1-4 summarizes the interface ports built into the router chassis.
Table 1-4Summary of Cisco 2900 series and Cisco 3900 series Built-In Interfaces
Data PortsManagement Ports
Console Serial,
Router
Model
10/100/1000
GE RJ-45
10/100/1000
SFPUSB Type A
Console Serial,
RJ-45
Mini-USB
(Type B)
Cisco 29012—2111
Cisco 29113—2111
Cisco 2921312111
Cisco 2951312111
Cisco 3925 with SPE 1003
Cisco 3945 with SPE 1503
Cisco 3925E with SPE 200 4
Cisco 3945E with SPE 250 4
1. One RJ-45 with 2 GE SFPs, or 3 RJ-45 GEs
2. One RJ-45 with 2 GE SFPs, or 3 RJ-45 GEs
3. Four RJ-45 or three RJ-45 with one GE-SFP, or two RJ-45 with two GE SFP
4. Four RJ-45 or three RJ-45 with one GE-SFP, or two RJ-45 with two GE SFP
1
2
3
4
221 1 1
221 1 1
221 1 1
221 1 1
Auxiliary,
RJ-45
Gigabit Ethernet Ports
There are two different types of Gigabit Ethernet (GE) ports available on Cisco 2900 series and Cisco
3900 series ISRs.
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Hardware Features
GE Ports
SFP Ports
Chapter 1 Overview of the Routers
The GE RJ-45 copper interface ports support 10BASE-T, 100BASE-TX, and 1000BASE-T.
The small-form-factor pluggable (SFP) ports support 1000BASE-LX/LH, 1000BASE-SX,
1000BASE-ZX, and Coarse Wavelength-Division Multiplexing (CWDM-8) modules, as well as 100Mbs
SFP modules.
The SFP port shares the same physical port as an RJ-45 GE port. Table 1-4 on page 1-17 shows the
models that support SFP installation. The SFP port supports auto-media-detection, auto-failover and
remote fault indication (RFI), as described in the IEEE 802.3ah specification.
Use the media-type {rj45{auto-failover}} | {sfp{auto-failover}} command to enable the
auto-media-detection and auto-failover features. Use the Command Lookup Tool for details about this
command.
The SFP port can be configured for the following behaviors:
• Always use the RJ-45 port.
• Always use the SFP port.
• Always use the RJ-45 port but fail over to the SFP port if the RJ-45 port fails. This is the default
configuration.
• Always use the SFP port but fail over to the RJ-45 port if the SFP port fails.
USB Serial Console Port
The Mini-USB type B serial port has been enabled to perform management tasks on the router. To use
this port, you must install a Windows USB device driver before establishing physical connectivity
between a personal computer and the router. See the “Installing the Cisco Microsoft Windows USB
Device Driver” section on page 3-35 for driver installation instructions.
Removable and Interchangeable Modules and Cards
Table 1-5 on page 1-20 summarizes the type of removable modules and cards that can be installed in the
router to provide specific capabilities. Services Performance Engines (SPEs), Service Modules (SMs),
and Enhanced High-Speed WAN Interface Cards (EHWICs) fit into external slots and can be removed
or replaced without opening the chassis.
Internal Services Modules (ISMs), expansion DRAM memory modules and next-generation Packet
Voice Data Modules (PVDM3s) plug into internal connectors inside the chassis. These modules can be
removed and installed only by opening the chassis on the Cisco 3900 series, or sliding the motherboard
out of the Cisco 3900 series.
External Slots
• Services Performance Engine, page 1-21
• Service Modules, page 1-21
• Enhanced High-Speed WAN Interface Cards, page 1-21
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Internal Slots
• Integrated Service Modules, page 1-22
• Packet Voice Data Modules, page 1-22
• Memory, page 1-22
Because of physical differences with the new slots, legacy network modules and legacy Service Modules
require an adapter for installation.
Hardware Features
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260.
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2)
while the housing is open, or both.
Statement 1043
See the Overview of Cisco Network Modules and Service Modules for Cisco Access Routers
document for general information and single- and double-wide slot numbering.
See the Installing Cisco Network Modules in Cisco Access Routers document for instructions that
describe how to install SMs, legacy network modules, and legacy Service Modules in the router.
See the Overview of Cisco Interface Cards for Cisco Access Routers for general interface card
information.
See the Installing Cisco Interface Cards in Cisco Access Routers document, for instructions that
describe how to install EHWICs and legacy interface cards in the router.
NoteSee the router product page at Cisco.com for a list of supported network modules and interface cards for
Cisco 2900 series and Cisco 3900 series ISRs.
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Hardware Features
Table 1-5 shows the number of internal and external slots on Cisco 2900 series and Cisco 3900 series
ISRs. It also shows the number of EHWICs and SMs that are supported in the router slots at any time.
Table 1-8 on page 1-23 shows memory specifications by router.
Table 1-5Cisco 2900 series and Cisco 3900 series Slots and Module Configurations
Internal
Modules and Cards
Router
SPESM
1
——4 single-wide (EHWIC)
2901
—1 single-wide4 single-wide (EHWIC)
2911
—1 single-wide
or
2921
1 double-wide
—2 single-wide
or
2951
1 double-wide
2 single-wide
or
1 single-wide + 1
double-wide
3925Services Performance Engine 100
4 single-wide
or
1 double-wide +
2 single-wide
3945Services Performance Engine 150
2 single-wide
or
1 single-wide +
1double-wide
3925EServices Performance Engine 200
4 single-wide
or
1 double-wide +
2 single-wide
3945EServices Performance Engine 250
1. Service Module slots support the installation of legacy network modules and extended voice modules (EVMs) with an appropriate adapter. See the
Hardware Installation Guide for the router.
2. EHWIC slots support HWICs, WICs and VICs.
3. AIMs are not supported.
2
EHWIC
or
2 double-wide (DW-EHWIC)
or
2 double-wide (DW-EHWIC)
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
3 single-wide (EHWIC)
or
1 double-wide + 1 single-wide
3 single-wide (EHWIC)
or
1 double-wide + 1 single-wide
Modules
3
ISM
PVDM3
12
12
13
13
14
14
03
03
4
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Hardware Features
4. PVDM3 slots support the installation of PVDM2 modules with an appropriate adapter. PVDM2s can not be intermixed with PVDM3s. See the
Hardware Installation Guide for router.
Services Performance Engine
Services Performance Engines (SPEs) are modular motherboards for Cisco 3900 series ISRs. The SPE
includes PVDM3 slots and system memory slots, and the ISM slot. The Services Performance Engine
provides a modular approach to system upgrades. Slide out the SPE from the router to replace internal
modules, or to upgrade the SPE for improved router performance.
See the “Removing and Replacing the Services Performance Engine” procedure on page 5-6 for
installation information.
Table 1-6 lists four SPE models that are supported on Cisco 3900 series routers. SPEs illustrations are
shown in the “Chassis Views” section on page 1-2. SPEs come preinstalled in 3900 series routers, or they
are purchased separately and installed in a 3900 series router. See the support table for more information.
Table 1-6Services Performance Engine Support
Services Performance EnginesCisco 3925Cisco 3945
SPE 100supported—
SPE 150—supported
SPE 200supported—
SPE 250—supported
NoteThe SPE 200 and the SPE 250 include a cryptographic accelerator for improved security
performance. See the “Cryptographic Accelerator” section on page 1-28 for more information.
Service Modules
Service Modules (SM) are the largest modules on Cisco 2900 series and Cisco 3900 series ISRs. With
the largest form-factor and power capacity, these modules deliver high-performance service
applications. SMs are physically larger than legacy network modules, as a result, network modules
require an adapter for installation. See the Installing Cisco Network Modules in Cisco Access Routers
guide for installation instructions,
Enhanced High-Speed WAN Interface Card (EHWICs) are the latest generation of interface cards.
EHWICs are installed in the EHWIC slot on the router. Legacy interface cards, such as WAN interface
cards (WICs), voice interface cards (VICs), high-speed WAN interface cards (HWICs), double-width
high-speed WAN interface cards (DHWICs), and (EHWICs) are supported in the EHWIC slot on the
router.
Services Performance Engine 200 and Services Performance Engine 250 support the following legacy
interface cards in the EHWIC slots. (See Table 1-7.)
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Hardware Features
Table 1-7EHWIC Support for SPE 200 and SPE 250
Slot 0Slot 1 Slot 2
WIC/VIC and HWICWIC/VIC, HWIC,
Integrated Service Modules
Internal Services Modules (ISM) supersede advanced integration modules (AIM) on Cisco 2900 series
and Cisco 3900 series ISRs. The ISM is larger in size than the AIM. Due to these physical differences,
the AIM does not fit into the ISM slot and is no longer supported on Cisco 2900 series and
Cisco 3900 series ISRs.
Packet Voice Data Modules
The Packet Voice Data Modules (PVDM3s) are the latest generation of PVDMs. First-generation
PVDM-I cards are not supported in the PVDM3 slots. Due to physical differences, PVDM2s require an
adapter for installation in the PVDM3 slot. See the “Installing and Removing PVDM2s” section on
page 5-23 for installation instructions.
Chapter 1 Overview of the Routers
WIC/VIC and HWIC
EHWIC, DHWIC, and
EDHWIC
Memory
NotePVDM2 cards cannot be mixed with PVDM3s.
Cisco 2900 series and Cisco 3900 series routers contain the following types of memory:
• DRAM—Stores the running configuration and routing tables and is used for packet buffering by the
network interfaces. Cisco IOS software executes from DRAM memory. Supported module types are
Unregistered Dual In-Line Memory Module (UDIMM) and very low profile registered DIMM (VLP
RDIMM).
NoteUDIMMs and VLP RDIMMs are not interchangeable.
• Boot/NVRAM—256K of internal non-volatile memory. Stores the bootstrap program (ROM
monitor), the configuration register, and the startup configuration.
• Flash memory—External flash memory. Stores the operating system software image. Each model
supports 2 external CompactFlash 4-GB memory cards provide a maximum 8-GB of CompactFlash.
NoteYou must use Cisco-qualified CompactFlash cards supporting True IDE PIO Mode 6 and
True IDE Multiword DMA Mode 4 as defined in CompactFlash Specification Revision 4.1
of the CompactFlash Association. Use of any other cards during normal network operation
can affect system performance.
Table 1-8 summarizes the memory options for Cisco 2900 series and Cisco 3900 series routers. Default
memory represents the minimum usable RAM. You can install additional RAM up to the maximum
amount.
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Expansion memory modules are UDIMMs or VLP RDIMMs with error correction code (ECC). All
onboard RAM uses ECC.
NoteThe current IOS supports only 2 GB of DRAM, although; the hardware supports more. Future IOS
VLP RDIMM expansion slots—2; both must be the same density.
Default VLP RDIMM memory modules—Two 512-MB modules for a
maximum of 1 GB.
Maximum memory—2.0 GB; 1.0 GB in each slot.
Cisco 3925EType—VLP RDIMMwith ECC.
VLP RDIMM sizes—512 MB, 1GB.
VLP RDIMM expansion slots—2, both must be the same density.
Default ECC memory modules—Two 512-MB modules for 1 GB.
Maximum memory—2.0 GB; 1.0 GB in each slot.
Cisco 3945EType—VLP RDIMMwith ECC.
VLP RDIMM sizes—512 MB, 1GB.
VLP RDIMM expansion slots—2, both must be the same density.
Default ECC memory modules—Two 512-MB modules for 1 GB.
Maximum memory—2.0 GB; 1.0 GB in each slot.
Power Supplies
Cisco 2900 series and Cisco 3900 series ISRs support a variety of power supply configurations. All
power supplies are field replaceable and externally accessible with the exception of the Cisco 2901 ISR.
The Cisco 2901 ISR has an internal power supply, which requires removing the cover for replacement.
If configured with dual power supplies or an Redundant power supplies (RPS), the power supplies are
hot swappable. RPSs require an RPS adapter. There are two versions of the RPS adapter, one for the
Cisco 2911 and one for the Cisco 2921 and 2951. Both use the Cisco Redundant Power System 2300.
Configurations include AC and DC (with and without IP), Dual DC, internal POE, and POE boost.
• Table 1-9 summarizes the power options.
• Table 1-10 shows POE power rates.
Table 1-9Cisco 2900 Series and Cisco 3900 Series Field Replaceable Unit Power Options
Router
Model AC
2901XX————X——
2911XXXX—X—X—X
2921XXXX—X—X—X
2951XXXX—X—X—X
3925XXXXX——XX—
3925EXXXXX——XX—
AC +
POEDC Hot Swap
Internal
1
RPS
2
External
3
RPS
Dual DC4Internal POE
Internal
POE Boost
External
POE Boost
5
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Table 1-9Cisco 2900 Series and Cisco 3900 Series Field Replaceable Unit Power Options (continued)
Router
Model AC
AC +
POEDC Hot Swap
Internal
1
RPS
2
RPS
3
Dual DC4Internal POE
External
Internal
POE Boost
External
POE Boost
5
3945XXXXX——XX—
3945EXXXXX——XX—
1. Must have RPS or POE boost installed.
2. Internal RPS means that and additional power supply can be added to the PS2 slot.
3. Uses external Cisco Redundant Power System 2300 with an adapter inserted in the chassis.
4. Dual DC means two separate DC inputs to the same power supply.
5. Uses Cisco Redundant Power System 2300 as 100% power boost. Internal power supply does not supply any boost. In this configuration there is no POE
redundancy.
Table 1-10Cisco 2900 series and Cisco 3900 series POE Power Ratings
Router Model
Power Supply290129112921295139253925E39453945E
Internal POE130 W200 W280 W370 W520 W520 W520 W520 W
Internal POE
————1040 W1040 W1040 W1040 W
Boost
External POE
—750 W750 W750 W————
Boost
Module and Router Power Consumption
Cisco 2900 series and Cisco 3900 series ISRs have energy efficiency features that reduce power
consumption. Some of the energy efficiency features are controlled by the hardware, whereas other
energy efficiency features are controlled by the software.
Hardware Features
• High-efficiency AC power supplies.
Software Features
• See the Configuring Power Efficiency Management module in the Cisco 3900 Series, 2900 Series,
and 1900 Series Integrated Services Routers Software Configuration Guide at Cisco.com. Learn
how to configure and manage power going to modules and peripherals.
Fans, Ventilation, and Airflow
The Cisco 2911 and Cisco 3900 series ISRs have optional fan filters that are easy to replace. The filters
may be used to meet Network Equipment Building Systems (NEBS) requirements, or to operate in dusty
environments. When a filter becomes dirty, discard it and replace it with a new one. See the “Replacing
a Fan Tray or Air Filter” section on page 5-45.
Fan speeds are controlled by the fan speed controller circuitry. To minimize noise, the fans operate at
one of several predetermined speeds and are dependent on the input ambient air temperature.
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Hardware Features
250960
SYS ACT POE
Cisco 2900 Series
250975
Cisco 2900 Series
SYS ACT
SYS
PWR1
AUX
PWR1
SYS
PWR2
AUX
PWR2
Cisco 2900 Series
250936
Chapter 1 Overview of the Routers
• Figure 1-19 shows Cisco 2901 airflow.
• Figure 1-20 shows Cisco 2911 airflow.
• Figure 1-21 shows Cisco 2921 and 2951 airflow.
• Figure 1-22 shows the Cisco 3900 series standard (non NEBS) airflow configuration. For NEBS, the
airflow is reversed.
• Figure 1-23 shows the Cisco 3900 series standard NEBS airflow configuration.
Figure 1-19Cisco 2901 Router Airf low
Figure 1-20Cisco 2911 Router Airflow
Figure 1-21Cisco 2921 and Cisco 2951 Router Airflow
1-26
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Figure 1-22Cisco 3900 Series (Non NEBS) Router Airflow
Figure 1-23Cisco 3900 Series NEBS Router Airflow
Hardware Features
SYS ACT
SYS
AUX
SYS
PWR1
AUX
PWR1
PWR2
PWR2
Cisco 3900 Series
250930
Real-Time Clock
Upon system power up, the internal real-time clock with battery backup provides the system software
with the time of day. This allows the system to verify the validity of the certification authority (CA)
certificate. The Cisco 2900 and Cisco 3900 series routers have a lithium battery. This battery lasts for
the life time of the router under the operating environmental conditions specified for the router and is
not field-replaceable.
NoteIf the lithium battery in a Cisco 2900 or Cisco 3900 series ISR should fail, the router must be returned
to Cisco for repair.
Although the battery is not intended to be field-replaceable, the following warning must be heeded:
SYS ACT
SYS
AUX
SYS
PWR1
AUX
PWR1
PWR2
PWR2
Cisco 3900 Series
250991
Warning
There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with
the same or equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer's instructions.
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Slot, Port, and Interface Information
Secure Key
A hardware secure key storage unit is provided on the Cisco 3925 and Cisco 3945 routers to safely store
passwords and credentials. The secure key storage unit is a self-contained tamper-resistant computer
key-store that acts as a black box for credential storage by accepting credentials and never returning
them.
Cryptographic Accelerator
Cisco 3925E and Cisco 3945E ISRs ship with a Services Performance Engine that includes an onboard
cryptographic accelerator. It shares security processing for SSLVPN and IPSec. By default, acceleration
of SSL is disabled so IPSec performance is maximized.
If you want to set up the router as an SSLVPN gateway, enable the SSLVPN feature with the
crypto engine accelerator bandwidth-allocation sslfair command. To learn more about the
cryptographic accelerator, see the Configuring the Security Features module in the Cisco 3900 series, 2900 series, and 1900 series Integrated Services Routers Software Configuration Guide at Cisco.com.
Chapter 1 Overview of the Routers
Slot, Port, and Interface Information
Table 1-11 and Ta ble 1- 12 show slot, port, and interface numbering ranges.
On the Cisco 2901 router, the numbering format for slots and ports is defined as follows: interface type 0/slot/port. “0” indicates slots that are built into the chassis of a router. On the Cisco 2901 router, all
slots begin with “0,” because all slots are built into the chassis. On the Cisco 2911, 2921, 2951, and Cisco
3900 series routers, some slots are built into the chassis and some are external.
Slots that are part of a network module or an extension voice module have numbers that begin with “1”
or “2,” respectively. See the module documentation for more information.
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Table 1-11Slot, Port, and Interfaces (continued)
Slot, Port, and Interface Information
Slots, Ports, Interface2901
SM interfacenot supportedinterface1/portinterface1-2/port2
Double-Wide
SM interface
HWIC on SM interfaces
VWIC on SM interfaces
1. On the Cisco 2901 router, the numbering format for configuring an asynchronous interface is 0/slot/port. To configure the line associated with an
asynchronous interface, use the interface number to specify the async line. For example, line 0/1/0 specifies the line associated with interface serial 0/1/0
on a WIC-2A/S in slot 1. Similarly, line 0/2/1 specifies the line associated with interface async 0/2/1 on a WIC-2AM in slot 2.
2. Applies only to Cisco 2951, Cisco 3925, and Cisco 3925E routers.
3. Applies only to Cisco 3945 and Cisco 3945E routers.
4. Applies only to Cisco 2921 router.
5. Applies only to Cisco 2951, Cisco 3925, and Cisco 3925E routers.
6. Applies only to Cisco 3945 and Cisco 3945E routers.
7. Applies only to Cisco 2951, Cisco 3925, and Cisco 3925E routers.
8. Applies only to Cisco 3945 and 3945E routers.
Table 1-12Interface Numbering on Cisco 2911, 2921, 2951 ISRs and Cisco 3900 ISRs
1
2911 & 29212951 & 3925 & 39453925E & 3945E
interface1-4/port
not supportedinterface1/port
4
interface2/port5
interface4/port
6
not supportedinterface1wic-slot/port interface1-2/wic-
Interface card (DW-EHWIC,
EHWIC,HWIC, HWIC-D, WIC,
VWIC, VIC) plugged directly
into an EHWIC slot
Interface-type0 / interface-card-slot
3
/ portinterface serial 0/x/y
interface async 0/x/y
line 0/x/y
interface fa 0/x/y
voice-port 0/x/y
Interface card (WIC, VWIC,
VIC) plugged into a service or
network module
Interface-type1
5
/ interface-card-slot / portcontroller t1 1/x/y
voice-port 1/x/y
interface serial 1/x/y
interface async 1/x/y
line 1/x/y
Built into a service or network
module (NME, NME-X, NMD,
NME-XD)
FXS or FXO port in an extension
voice module (EVM)
Interface-type15 / portinterface gi 1/x
interface serial 1/x
Interface-type2 / 0 / port
interface async 1/x
line 1/x
voice-port 2/0/x
4
FXS/DID port numbers 0 to 7 are built into the EVM.
FXS/FXO port numbers 8 to 15 are in expansion module 0.
FXS/FXO port numbers 16 to 23 are in expansion module 1.
2
4
4
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LED Indicators
Table 1-12Interface Numbering on Cisco 2911, 2921, 2951 ISRs and Cisco 3900 ISRs (continued)
Port LocationIOS Command Line InterfaceExamples1,
Voice port in a BRI expansion
module (internal slot) in an
extension voice module (EVM)
Interface-type2 / 0 / port
Port numbers are 8 to 11 in expansion module 0.
voice-port 2/0/x
2
Port numbers are 16 to 19 in expansion module 1.
BRI interface in a BRI expansion
module (internal slot) in an
extension voice module
Interface-type2 / port
Port numbers are 0 to 3 if one expansion module is installed.
interface bri 2/x
Port numbers are 0 to 7 if two expansion modules are installed.
1. Interface abbreviations: fa = Fast Ethernet; gi = Gigabit Ethernet; USB = universal serial bus; BRI = ISDN basic rate interface.
2. The interfaces listed are examples only; other possible interface types are not listed.
3. Only interface card slot numbers 1 and 3 are used for double-width (HWIC-D).
4. Specify the line number in the Cisco IOS command-line interface (CLI) by using the interface number for the associated asynchronous serial
interface.
5. The network module slot number is 1 for all Cisco 2900 series routers.
NoteOn the Cisco 2911, 2921, 2951 routers and Cisco 3900 series routers the interface numbering scheme is
the same for asynchronous interfaces as for other types of interfaces. To configure the line associated
with an async interface, use the interface number to specify the async line. For example, line 0/3/0
specifies the line associated with interface serial 0/3/0 on an WIC-2A/S in slot 3. Similarly, line 1/22
specifies the line associated with interface async 1/22 on an NM-32A in network module slot 1.
LED Indicators
Table 1-13 summarizes the LED indicators that are located on the router bezel or chassis, but not on the
removable modules or interface cards.
For descriptions of LEDs in removable modules and interface cards, see the applicable documentation
for those products.
For LED troubleshooting information, including possible trouble causes and corrective actions, see
Table 1-13.
Table 1-13Cisco 2900 and 3900 Series Routers LED Indicators
LEDColorDescription
POEGreenIP phone power is on.Front bezelFront bezel
POE BoostGreenIP Phone power is supplied by
PS/PS1GreenSystem is running.Front bezelFront bezel
AmberIP phone power is not on.
POE Boost power supply.
OffExternal POE Boost power
supply is not on.
AmberSystem is not running.
Cisco 2900
Routers
Cisco 3900
Routers
——
——
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Table 1-13Cisco 2900 and 3900 Series Routers LED Indicators (continued)
LED Indicators
LEDColorDescription
Cisco 2900
Routers
Cisco 3900
Routers
PS2GreenSystem is running.Front bezelFront bezel
AmberSystem is not running.
AC OK
RPSGreenSystem is running on external
1
GreenAC power connected.Front bezel,
OffNo AC power connected
not available
on 2901
Front bezel,
RPS power supply.
not available
Front bezel
—
on 2901
SYSSolid greenSolid green indicates normal
Front bezelFront bezel
operation.
Blinking greenSystem is booting or is in ROM
monitor mode.
AmberSystem error.
OffPower is off or system board is
faulty.
ACTSolid or blinking
green
Solid or blinking indicates packet
activity between the forwarding
Front bezelFront bezel
and routing engine and any I/O
port.
OffNo packet transfers are
occurring.
RJ-45 CONGreenSerial console is active.Back panelBack panel
USB CONGreenUSB console is active.Back panelBack panel
GE: LinkGreenSolid green indicates the Ethernet
Back panelBack panel
port has a link partner.
SFP SBlinking greenBlinking frequency indicates port
Back panelBack panel
speed. See the definition for the S
LED.
SFP ENOffNot present.Back panelBack panel
GreenPresent and enabled.
AmberPresent with failure.
CF0/CF1GreenFlash memory is being accessed;
Back panelBack panel
do not eject the CompactFlash
memory card.
AmberCompactFlash error.Back panelBack panel
OffFlash memory is not being
Back panelBack panel
accessed; okay to eject the
CompactFlash memory card.
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LED Indicators
Chapter 1 Overview of the Routers
Table 1-13Cisco 2900 and 3900 Series Routers LED Indicators (continued)
LEDColorDescription
S (Speed)1 blink + pauseFE or GE port operating at
Cisco 2900
Routers
Back panelBack panel
Cisco 3900
Routers
10 Mb/s.
2 blink + pauseFE or GE port operating at
100 Mb/s.
3 blink + pauseGE port operating at 1000 Mb/s.
L (Link)GreenFE or GE link is established.Back panelBack panel
OffNo FE or GE link is established.
PVDM 0,1,2,
and 3
GreenPVDM is initialized.Back panelBack panel
AmberPVDM is detected but not
Back panelBack panel
initialized.
OffNo PVDM installed.Back panelBack panel
ISMGreenInitialized.
AmberInitialized with error.
OffNot installed.
1. LED goes off if the AC power fails or is disconnected. It does not go on and off with the switch.
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Specifications
The following tables provide ISR specifications.
• Cisco 2901—Tab le 1-14
• Cisco 2911—Tab le 1-15
• Cisco 2921—Tab le 1-16
• Cisco 2951—Tab le 1-17
• Cisco 3900 series—Table 1- 1 8
Table 1-14Cisco 2901 Router Specifications
DescriptionSpecification
Physical
Dimensions (H x W x D)1.75 x 17.25 x 17.3 in. (44.5 x 438.2 x 439.4 mm), 1 RU height
Weight - with AC PS (w/o
modules)
Weight - with AC-POE PS (w/o
modules)
Weight - fully configured 16.0 lb (7.26 kg)
Power
AC input power
• Input voltage100 to 240 VAC, autoranging
• Frequency47 to 63 Hz
• Input current 0.3 A to 1.5 A (configuration dependent)
• Input current with AC-POE0.3 to 3.4 A (configuration dependent)
• Surge current30 A maximum at 115 VAC 60Hz, 60 A maximum at 230 VAC 50
Power consumption55 W to 145 W, 188 to 495 BTU/hr (configuration dependent)
• With AC-POE60 W to 330 W, 205 to 1126 BTU/hr (configuration dependent)
Ports
ConsoleOne RJ-45 connector and one mini USB Type B, USB 2.0 compliant
Auxiliary portsRJ-45 connector
USB portsTwo USB Type A, USB 2.0 compliant, 2.5 W (500 mA) max.
10/100/1000 Gigabit Ethernet Two RJ-45 connectors (GE0/0, GE0/1), auto-MDIX
Environmental
Operating humidity10 to 85% RH
Operating humidity (short-term
per NEBS)
Operating temperature - up to
5906 ft (1800 m) elevation
Specifications
13.4 lbs (6.08 kg)
14.3 lbs (6.49 kg)
Hz
1
2
NA
32 to 104°F (0 to 40°C)
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Immunity complianceCISPR24 ITE-Immunity characteristics, Limits and methods of
EMC complianceEN 55022, class A
Specifications
measurement
EN 55024 ITE-Immunity characteristics, Limits and methods of
measurement
EN 50082-1 Electromagnetic compatibility - Generic immunity
standard - Part 1
EN 300-386 Electromagnetic compatibility for TNE
SD/EMI
EN 61000-6-1
For detailed compliance information, see the Regulatory
Compliance and Safety Information for Cisco 2900 Series
Integrated Services Router document
CISPR22, class A
CFR47, Part 15, Subpart B, class A
EN 300386, Class A
AS/NZS CISPR22, Class A
VCCI, Class A
SD/EMI, Class A
Harmonic Current Emission
EN 61000-3-2 for EUT Power requirements <16A
EN 61000-3-12 for EUT Power requirements >16A
Voltage Fluctuation and Flicker
EN 61000-3-3 for EUT Power requirements <16
EN 61000-3-11 for EUT Power requirements >16A
For detailed compliance information, see the Regulatory
Compliance and Safety Information for Cisco 2900 Series
Integrated Services Router document.
1. 480 Mb/s individually, bandwidth is shared when both are used.
Table 1-18Cisco 3900 Series Router Specifications
DescriptionSpecification
Physical
Dimensions (H x W x D)5.25 x 17.25 x 18.75 in. (133.4 x 438.2 x 476.2 mm), 3 RU height
Weight with AC PS (w/o
39.0 lbs (17.69 kg)
modules)
Weight with AC-POE PS (w/o
40.0 lbs (18.14 kg)
modules)
With DC PS (w/o modules)Not available (NA)
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Specifications
Chapter 1 Overview of the Routers
Table 1-18Cisco 3900 Series Router Specifications (continued)
DescriptionSpecification
Weight (fully configured) 60 lb (27.21 kg)
Power
AC input power (Cisco 3945)
• Input voltage100 to 240 VAC, autoranging
• Frequency47 to 63 Hz
• Input current 0.4 to 3.5 A (configuration dependent)
• Input current with AC-POE0.4 to 7.0 A (configuration dependent)
• Surge current30 A maximum at 115 VAC 60 Hz, 60 A maximum at 230 VAC 50
Hz
Power consumption (Cisco 3945) 85 to 400 W, 600 to 1370 BTU/hr (configuration dependent)
• With AC-POE85 to 800 W, 600 to 2740 BTU/hr (configuration dependent)
Ports
Console port One RJ-45 connector and one mini USB Type B, USB 2.0
compliant
Auxiliary portRJ-45 connector
USB ports Two USB Type A, USB 2.0 compliant, 2.5 W (500 mA) max.
1
10/100/1000 Gigabit Ethernet Three or Four RJ-45 connectors (GE0/0, GE0/1, GE0/2, GE0/3),
auto-MDIX
2
.
NoteCisco 3925E and Cisco 3945E routers have four RJ-45
connectors that support Gigabit Ethernet networks.
SFPTwo RJ-45 connectors support SFP modules. When an SFP module
is installed the adjacent RJ-45 GE connector is disabled. See
Table 5-4 for a list of supported modules.
Environmental
Operating humidity5 to 85% RH
Operating humidity (short-term
5% to 90%, but not to exceed 0.024 kg water/kg of dry air
per NEBS)
Operating temperature up to 5906
32 to 104°F (0 to 40°C)
ft (1800 m) elevation
Operating temperature up to 9843
32 to 104°F (0 to 40°C)
ft (3000 m) elevation
Operating temperature up to
32 to 86 °F (0 - 30 °C)
13,123 ft (4000 m) elevation
Temperature - Short-term per
23 to 122°F (-5°C to 50°C)
NEBS/1800m max altitude
Operating altitude maximum13,123 ft (4000 m)
Transportation and Storage
Nonoperating temperature-40 to 158°F (-40 to 70°C)
Nonoperating humidity5 to 95% RH
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Table 1-18Cisco 3900 Series Router Specifications (continued)
DescriptionSpecification
Nonoperating altitude15,000 ft (4570 m)
Acoustic
Acoustic: Sound Pressure
(Typical/Maximum)
Acoustic: Sound Power
(Typical/Maximum)
Environmental
Operating humidity5 to 85% RH
Operating humidity (short-term
per NEBS)
Operating temperature up to 5906
ft (1800 m) elevation
Safety complianceIEC 60950-1, Safety of information technology equipment
Specifications
57.6 to 77.6 dBA
67.8 to 84.7 dBA
5 to 90%, but not to exceed 0.024 kg water/kg of dry air
32 to 104°F (0 to 40°C)
EN 60950-1, Safety of information technology equipment
UL 60950-1, Standard for safety for information technology
equipment [US]
CAN/CSA C22.2 No. 60950-1, Safety of information technology
equipment including electrical business equipment [Canada]
AS/NZS 60950.1 2003
IEC60950, 3rd edition [PRC]
IEC60950, 2nd Edition [Mexico]
For detailed compliance information, see the Regulatory
Compliance and Safety Information for Cisco 3900 Series
Integrated Services Routers document.
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Specifications
Chapter 1 Overview of the Routers
Table 1-18Cisco 3900 Series Router Specifications (continued)
DescriptionSpecification
Immunity complianceCISPR24 ITE-Immunity characteristics, Limits and methods of
measurement
EN 55024 ITE-Immunity characteristics, Limits and methods of
measurement
EN 50082-1 Electromagnetic compatibility - Generic immunity
standard - Part 1
EN 300-386 Electromagnetic compatibility for TNE
SD/EMI
EN 61000-6-1
For detailed compliance information, see the Regulatory
Compliance and Safety Information for Cisco 3900 Series
Integrated Services Routers document.
EMC complianceEN 55022, class A
CISPR22, class A
CFR47, Part 15, Subpart B, class A
EN300386, Class A
AS/NZS CISPR22, Class A
VCCI, Class A
SD/EMI, Class A
Harmonic Current Emission
EN 61000-3-2 for EUT Power requirements <16A
EN 61000-3-12 for EUT Power requirements >16A
Voltage Fluctuation and Flicker
EN 61000-3-3 for EUT Power requirements <16
EN 61000-3-11 for EUT Power requirements >16A
For detailed compliance information, see the Regulatory
Compliance and Safety Information for Cisco 3900 Series
Integrated Services Routers document.
1. 480 Mb/s individually, bandwidth is shared when both are used.
2. Auto-MDIX = auto media-dependent interface crossover
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Periodic Inspection and Cleaning
Periodic inspection and cleaning of the external surface of the router is recommended to minimize the
negative impact of environmental dust or debris. The frequency of inspection and cleaning is dependent
upon the severity of the environmental conditions, but a minimum of every six months is recommended.
Cleaning involves vacuuming of router air intake and exhaust vents and replacement of air filters. See
the “Fans, Ventilation, and Airflow” section on page 1-25 and the “Replacing a Fan Tray or Air Filter”
section on page 5-45.
CautionSites with ambient temperatures consistently above 25°C or 77°F and with potentially high levels of dust
or debris may require periodic preventative maintenance cleaning.
Periodic Inspection and Cleaning
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Periodic Inspection and Cleaning
Chapter 1 Overview of the Routers
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CHAP T E R
2
Preparing for Router Installation
This document provides preinstallation information, such as recommendations and requirements that
should be before installing your router. See the following sections to prepare for installation:
• Safety Recommendations, page 2-2
• General Site Requirements, page 2-4
• Rack Requirements, page 2-4
• Router Environmental Requirements, page 2-5
• Network Cabling Specifications, page 2-6
• Installation Checklist, page 2-14
• Creating a Site Log, page 2-15
To see translated warnings that appear in this publication, see the Cisco 2900 and 3900 Series Integrated
Services Routers Regulatory Compliance and Safety Informationdocument.
Warning
Warning
Warning
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260.
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2)
while the housing is open, or both.
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit.
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
1029
Statement 1028
Statement 1043
Statement
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Safety Recommendations
Chapter 2 Preparing for Router Installation
Warning
Warning
Warning
Warning
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Statement 1026
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Before opening the unit, disconnect the telephone-network cables to avoid contact with
telephone-network voltages.
Statement 1041
Do not use this product near water; for example, near a bath tub, wash bowl, kitchen sink or laundry
tub, in a wet basement, or near a swimming pool.
Statement 1035
Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
Statement 1036
Warning
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
Warning
Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote
risk of electric shock from lightning.
Warning
Warning
To report a gas leak, do not use a telephone in the vicinity of the leak.
his 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
Safety Recommendations
Follow these guidelines to ensure general safety:
• Keep the chassis area clear and dust-free during and after installation.
• If you remove the chassis cover, put it in a safe place.
• Keep tools and chassis components away from walk areas.
Statement 1037
Statement 1038
Statement 1039
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• Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll up
your sleeves.
• Wear safety glasses when working under conditions that might be hazardous to your eyes.
• Do not perform any action that creates a hazard to people or makes the equipment unsafe.
Safety with Electricity
Safety Recommendations
Warning
Warning
Warning
Warning
Warning
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit.
Statement 1028
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Statement 1001
Read the installation instructions before connecting the system to the power source.
Statement 1004
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Statement 1029
The covers are an integral part of the safety design of the product. Do not operate the unit without the
covers installed.
Statement 1077
Follow these guidelines when working on equipment powered by electricity:
• Locate the emergency power-off switch in the room in which you are working. If an electrical
accident occurs, you can quickly turn off the power.
• Disconnect all power before doing the following:
–
Installing or removing a chassis
–
Working near power supplies
• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety grounds.
• Do not work alone if hazardous conditions exist.
• Never assume that power is disconnected from a circuit. Always check.
• Never open the enclosure of the internal power supply.
• If an electrical accident occurs, proceed as follows:
–
Use caution; do not become a victim yourself.
–
Turn off power to the device.
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General Site Requirements
–
If possible, send another person to get medical aid. Otherwise, assess the condition of the victim
and then call for help.
–
Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
In addition, use the following guidelines when working with any equipment that is disconnected from a
power source but still connected to telephone wiring or other network cabling:
• Never install telephone wiring during a lightning storm.
• Never install telephone jacks in wet locations unless the jack is specifically designed for it.
• Never touch uninsulated telephone wires or terminals unless the telephone line is disconnected at
the network interface.
• Use caution when installing or modifying telephone lines.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur if
electronic printed circuit cards are improperly handled and can cause complete or intermittent failures.
Always follow ESD prevention procedures when removing and replacing modules:
• Ensure that the router chassis is electrically connected to ground.
Chapter 2 Preparing for Router Installation
• Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to
an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. To
guard against ESD damage and shocks, the wrist strap and cord must operate effectively.
• If no wrist strap is available, ground yourself by touching a metal part of the chassis.
CautionFor the safety of your equipment, periodically check the resistance value of the antistatic strap. It should
be between 1 and 10 megohms (Mohm).
General Site Requirements
This section describes the requirements your site must meet for safe installation and operation of your
router. Ensure that the site is properly prepared before beginning installation. If you are experiencing
shutdowns or unusually high errors with your existing equipment, this section can also help you isolate
the cause of failures and prevent future problems.
Rack Requirements
Some Cisco routers include brackets for use with a 19-inch rack or, if specified in your order, optional
larger brackets for use with a 23-inch rack.
The following information can help you plan your equipment rack configuration:
• Allow clearance around the rack for maintenance.
• Allow at least one rack unit of vertical space between routers.
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• Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each
router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air.
Heat generated by equipment near the bottom of the rack can be drawn upward into the intake ports
of the equipment above it.
• When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or
exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated
in the rack.
Router Environmental Requirements
Cisco 2900 series routers can be placed on a desktop or installed in a rack. The Cisco 2901 router can
also be wall mounted. The location of your router and the layout of your equipment rack or wiring room
are extremely important considerations for proper operation. Equipment placed too close together,
inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make
maintenance difficult. Plan for access to both front and rear panels of the router.
When planning your site layout and equipment locations, refer to the “General Site Requirements”
section on page 2-4, section. If you are currently experiencing shutdowns or an unusually high number
of errors with your existing equipment, these precautions and recommendations may help you isolate the
cause of failure and prevent future problems.
• Ensure that the room where your router operates has adequate air circulation. Electrical equipment
generates heat. Without adequate air circulation, ambient air temperature may not cool equipment
to acceptable operating temperatures.
Router Environmental Requirements
• Always follow ESD-prevention procedures described in the “Preventing Electrostatic Discharge
Damage” section on page 2-4 to avoid damage to equipment. Damage from static discharge can
cause immediate or intermittent equipment failure.
• Ensure that the chassis cover and module rear panels are secure. All empty network module slots,
interface card slots, and power supply bays must have filler panels installed. The chassis is designed
to allow cooling air to flow within it, through specially designed cooling slots. A chassis with
uncovered openings permits air leaks, which may interrupt and reduce the flow of air across internal
components.
• Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through
the chassis. The best placement of the baffles depends on the airflow patterns in the rack, which can
be found by experimenting with different configurations.
• When equipment installed in a rack (particularly in an enclosed rack) fails, try operating the
equipment by itself, if possible. Power off other equipment in the rack (and in adjacent racks) to
allow the router under test a maximum of cooling air and clean power.
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Power Guidelines and Requirements
Power Guidelines and Requirements
Check the power at your site to ensure that you are receiving “clean” power (free of spikes and noise).
Install a power conditioner if necessary.
The AC power supply includes the following features:
• Autoselects either 110 V or 220 V operation.
• All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power inlet indicates
the correct voltage, frequency [AC-powered systems only], current draw, and power dissipation for
the unit.)
For the power requirements for the Cisco 2900 and 3900 series routers, see the specifications table for
each router model, which can be found at the following link:
The following sections describe the cables needed to install your Cisco 2900 and 3900 series ISR in the
following sections:
• Console and Auxiliary Port Considerations, page 2-6
• Preparing for Network Connections, page 2-9
Console and Auxiliary Port Considerations
The router includes an asynchronous serial console port and an auxiliary port. The console and auxiliary
ports provide access to the router either locally using a console terminal connected to the console port,
or remotely using a modem connected to the auxiliary port. This section discusses important cabling
information to consider before connecting the router to a console terminal or modem.
The main difference between the console and auxiliary ports is that the auxiliary port supports hardware
flow control and the console port does not. Flow control paces the transmission of data between a
sending device and a receiving device. Flow control ensures that the receiving device can absorb the data
sent to it before the sending device sends more. When the buffers on the receiving device are full, a
message is sent to the sending device to suspend transmission until the data in the buffers has been
processed. Because the auxiliary port supports flow control, it is ideally suited for use with the
high-speed transmissions of a modem. Console terminals send data at speeds slower than modems do;
therefore, the console port is ideally suited for use with console terminals.
Console Port Connections
The router has both EIA/TIA-232 asynchronous (RJ-45) and USB 5-pin mini Type B, 2.0 compliant
serial console ports. The console ports do not have any hardware flow control. Shielded USB cables with
properly terminated shields are recommended.
EIA/TIA-232
Depending on the cable and the adapter used, this port appears as a DTE or DCE device at the end of the
cable. Only one port can be used at the same time.
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The default parameters for the console port are 9600 baud, 8 data bits, 1 stop bit, and no parity. The
console port does not support hardware flow control. For detailed information about installing a console
terminal, see the “Connecting to a Console Terminal or Modem” section on page 3-30.
For cable and port pinouts, see the Cisco Modular Access Router Cable Specifications document located
at Cisco.com.
USB Serial Console
The USB serial console port connects directly to the USB connector of a PC using a USB Type A to 5-pin
mini USB Type-B cable. The USB Console supports full speed (12Mb/s) operation. The console port
does not support hardware flow control.
NoteAlways use shielded USB cables with a properly terminated shield.
The default parameters for the console port are 9600 baud, 8 data bits, no parity, and 1 stop bit. The
console port does not support mode control. For detailed information about installing a console terminal,
see the “Connecting to a Console Terminal or Modem” section on page 3-30.
For operation with Microsoft Windows, the Cisco Windows USB Console Driver must be installed on
any PC connected to the console port. If the driver is not installed, prompts guide you through a simple
installation process. For detailed information about installing the Cisco Windows USB Console Driver
see “Installing the Cisco Microsoft Windows USB Device Driver” section on page 3-35.
The Cisco Windows USB Console Driver allows plugging and unplugging the USB cable from the
console port without affecting Windows HyperTerminal operations. No special drivers are needed for
Mac OS X or Linux.
Network Cabling Specifications
Only one console port can be active at a time. When a cable is plugged into the USB console port, the
RJ-45 port becomes inactive. Conversely, when the USB cable is removed from the USB port, the RJ-45
port becomes active.
Baud rates for the USB console port are 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200 bps.
Note4-pin mini USB Type-B connectors are easily confused with 5-pin mini USB Type-B connectors.
Only the 5-pin mini USB Type-B is supported.
USB Console OS Compatibility
• Windows 2000, Window XP 32 bit, Windows Vista 32 bit
• Mac OS X version 10.5.4
• Redhat / Fedora Core 10 with kernel 2.6.27.5-117
• Ubuntu 8.10 with kernel 2.6.27-11
• Debian 5.0 with kernel 2.6
• Suse 11.1 with kernel 2.6.27.7-9
Auxiliary Port Connections
The router has an EIA/TIA-232 asynchronous serial auxiliary port (RJ-45) that supports flow control.
Depending on the cable and the adapter used, this port appears as a DTE or DCE device at the end of the
cable.
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Network Cabling Specifications
For connection to a modem, your router is provided with an RJ-45-to-DB-25 adapter cable. (A
DB-9-to-DB-25 adapter is also included with the Cisco 2901 router.)
For detailed information about connecting devices to the auxiliary port, see the “Connecting to a Console
Terminal or Modem” section on page 3-30.
For cable and port pinouts, see the Cisco Modular Access Router Cable Specifications document at
Cisco.com.
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Preparing for Network Connections
When setting up your router, consider distance limitations and potential electromagnetic interference
(EMI) as defined by the applicable local and international regulations.
Network connection considerations are provided for several types of network interfaces and are
described in the following sections:
• Ethernet Connections, page 2-9
• Serial Connections, page 2-9
• ISDN BRI Connections, page 2-11
• CSU/DSU Connections, page 2-12
See the following online document for more information about network connections and interfaces:
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors.
Ethernet Connections
The IEEE has established Ethernet as standard IEEE 802.3. Cisco 2900 series routers support the
following Ethernet implementations:
• 1000BASE-T—1000 Mb/s full-duplex transmission over a Category 5 or better unshielded
• 100BASE-T—100 Mb/s full-duplex transmission over a Category 5 or better unshielded
• 10BASE-T—10 Mb/s full-duplex transmission over a Category 5 or better unshielded twisted-pair
See the Cisco Modular Access Router Cable Specifications document at Cisco.com for information
about Ethernet cables, connectors, and pinouts.
Serial Connections
Serial connections are provided by WAN interface cards and network modules. Before you connect a
device to a serial port, you need to know the following:
• Type of device, data terminal equipment (DTE), or data communications equipment (DCE), you are
Statement 1021
twisted-pair (UTP) cable. Supports the Ethernet maximum length of 328 feet (100 meters).
twisted-pair (UTP) cable. Supports the Ethernet maximum length of 328 feet (100 meters).
(UTP) cable. Supports the Ethernet maximum length of 328 feet (100 meters).
connecting to the synchronous serial interface
• Type of connector, male or female, required to connect to the device
• Signaling standard required by the device
Configuring Serial Connections
The serial ports on the asynchronous/synchronous serial network modules and the serial WAN interface
card use DB-60 connectors. Serial ports can be configured as DTE or DCE, depending on the serial cable
used.
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Network Cabling Specifications
Serial DTE or DCE Devices
A device that communicates over a synchronous serial interface is either a DTE or DCE device. A DCE
device provides a clock signal that paces the communications between the device and the router. A DTE
device does not provide a clock signal. DTE devices usually connect to DCE devices. The documentation
that accompanied the device should indicate whether it is a DTE or DCE device. (Some devices have a
jumper to select either DTE or DCE mode.) Tab le 2 -1 lists typical DTE and DCE devices.
Table 2-1Typical DTE and DCE Devices
Device TypeGenderTypical Devices
DTEMale
DCEFemale
1. If pins protrude from the base of the connector, the connector is male.
2. If the connector has holes to accept pins, the connector is female.
Chapter 2 Preparing for Router Installation
1
Ter m i n a l
PC
2
Modem
CSU/DSU
Multiplexer
Signaling Standards Supported
The synchronous serial ports available for the router support the following signaling standards: they are
EIA/TIA-232, EIA/TIA-449, V.35, X.21, and EIA-530. You can order a Cisco DB-60 shielded serial
transition cable that has the appropriate connector for the standard you specify. The documentation for
the device you want to connect should indicate the standard used for that device. The router end of the
shielded serial transition cable has a DB-60 connector, which connects to the DB-60 port on a serial
WAN interface card. The other end of the serial transition cable is available with a connector appropriate
for the standard you specify.
The synchronous serial port can be configured as DTE or DCE, depending on the attached cable (except
EIA-530, which is DTE only).
All serial ports configured as DTE require external clocking from a CSU/DSU or other DCE device.
Although manufacturing your own serial cables is not recommended (because of the small size of the
pins on the DB-60 serial connector), cable pinouts are provided in the Cisco Modular Access Router
Cable Specifications document.
Distance Limitations
Serial signals can travel a limited distance at any given bit rate; generally, the slower the data rate, the
greater the distance. All serial signals are subject to distance limits, beyond which a signal significantly
degrades or is completely lost.
NoteOnly the serial WAN interface card supports bit rates above 128 Kbps.
Table 2-2 lists the recommended maximum speeds and distances for each serial interface type; however,
you might get good results at speeds and distances greater than those listed, if you understand the
electrical problems that might arise and can compensate for them. For instance, the recommended
maximum rate for V.35 is 2 Mb/s, but 4 Mb/s is commonly used.
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Table 2-2Serial Signal Transmission Speeds and Distances
Rate (bps)FeetMetersFeetMetersFeetMeters
2400200604100125016.45
480010030205062516.45
96005015102531216.45
19200257.651315616.45
38400123.72567816.45
560008.62.61023116.45
1544000 (T1)——501516.45
Balanced drivers allow EIA/TIA-449 signals to travel greater distances than EIA/TIA-232 signals. The
recommended distance limits for EIA/TIA-449 shown in Table 2-2 are also valid for V.35, X.21, and
EIA-530. Typically, EIA/TIA-449 and EIA-530 can support 2-Mb/s rates, and V.35 can support 4-Mb/s
rates.
Distance for
EIA/TIA-232
Network Cabling Specifications
Distance for
EIA/TIA-449, X.21, V.35,
and EIA-530 Distance for USB
Asynchronous/Synchronous Serial Module Baud Rates
The following baud-rate limitations apply to the slow-speed serial interfaces found in the
asynchronous/synchronous serial modules:
• Asynchronous interface—Maximum baud rate is 115.2 kbps.
• Synchronous interface—Maximum baud rate is 128-kbps full duplex.
ISDN BRI Connections
BRI WAN interface cards provide ISDN BRI connections. The BRI modules and BRI WAN interface
cards are available with either an S/T interface that requires an external Network Terminator 1 (NT1),
or a U interface that has a built-in NT1.
You can install the BRI modules in any available slot in the chassis.
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Use a BRI cable (not included) to connect the BRI WAN interface card directly to an ISDN. Tab le 2-3
lists the specifications for ISDN BRI cables. Also, see the Cisco Modular Access Router Cable
Specifications document at Cisco.com for pinouts.
Statement 1026
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Required Tools and Equipment for Installation and Maintenance
CSU/DSU WAN interface cards (WICs) are available to provide switched-56-kbps connections or full
or fractionalized T1 connections.
For more information on CSU/DSU WICs, see the online documents at Cisco.com.
1
/km
Chapter 2 Preparing for Router Installation
30 nF/km
Required Tools and Equipment for Installation and Maintenance
Warning
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260.
Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The
telecommunications lines must be disconnected 1) before unplugging the main power connector or 2)
while the housing is open, or both.
Statement 1043
You need the following tools and equipment to install and upgrade the router and its components:
• ESD-preventive cord and wrist strap
• Number 2 Phillips screwdriver
• Torx T-15 screwdriver
• Phillips screwdrivers: small, 3/16-in. (4 to 5 mm) and medium, 1/4-in. (6 to 7 mm)
–
To install or remove modules
–
To remove the cover, if you are upgrading memory or other components
• Screws that fit your rack
• Wire crimper
• Wire for connecting the chassis to an earth ground:
–
AWG 6 (13 mm2) wire for NEBS-compliant chassis grounding
–
AWG 1 4 ( 2 mm2) or larger wire for NEC-compliant chassis grounding
–
AWG 1 8 ( 1 mm2) or larger wire for EN/IEC 60950-compliant chassis grounding
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• For NEC-compliant grounding, an appropriate user-supplied ring terminal, with an inner diameter
of 1/4 in. (5 to 7 mm)
In addition, depending on the type of modules you plan to use, you might need the following equipment
to connect a port to an external network:
• Cables for connection to the WAN and LAN ports (dependent on configuration)
NoteFor more information on cable specifications, see the Cisco Modular Access Router Cable
Specifications document at Cisco.com.
• Ethernet hub or PC with a network interface card for connection to an Ethernet (LAN) port.
• Console terminal (an ASCII terminal or a PC running HyperTerminal or similar terminal emulation
software) configured for 9600 baud, 8 data bits, 1 stop bit, no flow control, and no parity.
• Modem for connection to the auxiliary port for remote administrative access (optional).
• Data service unit (DSU) or channel service unit/data service unit (CSU/DSU) as appropriate for
serial interfaces.
• External CSU for any CT1/PRI modules without a built-in CSU.
• NT1 device for ISDN BRI S/T interfaces (if not supplied by your service provider).
Required Tools and Equipment for Installation and Maintenance
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Installation Checklist
Installation Checklist
The sample installation checklist lists items and procedures for installing a new router. Make a copy of
this checklist and mark the entries when completed. Include a copy of the checklist for each router in
your site log (described in the next section, “Creating a Site Log”).
Installation checklist for site_____________________________________________
Regulatory Compliance and Safety Information for Cisco
2900 Series Integrated Services Routers or Regulatory
Compliance and Safety Information for Cisco 3900 Series
Integrated Services Routers documentreceived
Product registration card received
Cisco.com contact information label received
Chassis components verified
Initial electrical connections established
ASCII terminal (for local configuration) or
modem (for remote configuration) available
Signal distance limits verified
Startup sequence steps completed
Initial operation verified
Software image verified
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Creating a Site Log
The Site Log provides a record of all actions related to the router. Keep it in an accessible place near the
chassis where anyone who performs tasks has access to it. Use the installation checklist to verify steps
in the installation and maintenance of the router. Site Log entries might include the following
information:
• Installation progress—Make a copy of the installation checklist and insert it into the site log. Make
entries as each procedure is completed.
• Upgrade and maintenance procedures—Use the site log as a record of ongoing router maintenance
and expansion history. A site log might include the following events:
–
Installation of network modules
–
Removal or replacement of network modules and other upgrades
–
Configuration changes
–
Maintenance schedules and requirements
–
Maintenance procedures performed
–
Intermittent problems
Creating a Site Log
–
Comments and notes
Inspect all items for shipping damage. If anything appears to be damaged or if you encounter problems
installing or configuring your router, contact customer service. Warranty, service, and support
information is in the quick start guide that shipped with your router, or in the Preface of this guide. See
the “Obtaining Documentation and Submitting a Service Request” section on page -xi.
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CHAP T E R
3
Installing and Connecting the Router
This document describes how to install and connect Cisco 2900 series and Cisco 3900 series integrated
services routers (ISRs) to LAN, WAN, and Voice networks. The following sections provide technical
details.
• Installing the Router, page 3-4
• Chassis Grounding, page 3-15
• Connecting Power, page 3-18
• Connecting to a Console Terminal or Modem, page 3-30
• Installing the Cisco Microsoft Windows USB Device Driver, page 3-35
• Uninstalling the Cisco Microsoft Windows USB Driver, page 3-37
• Connecting to the Auxiliary Port, page 3-38
• Connecting WAN, LAN, and Voice Interfaces, page 3-41
WarningTo see translations of the warnings that appear in this publication, see the Regulatory Compliance and
Safety Information for Cisco 2900 Series Integrated Services Routers or the Regulatory Compliance and
Warning
Warning
Warning
Safety Information for Cisco 3900 Series Integrated Services Routers document.
qualified personnel should be allowed to install, replace, or service this equipment.
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit.
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
1029
Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,
detach the end away from the unit first.
Statement 1028
Statement 1026
Only trained and
Statement 1030
Statement
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Warning
Warning
Warning
Warning
Warning
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Before opening the unit, disconnect the telephone-network cables to avoid contact with
telephone-network voltages.
Statement 1041
Do not use this product near water; for example, near a bath tub, wash bowl, kitchen sink or laundry
tub, in a wet basement, or near a swimming pool.
Statement 1035
Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
Statement 1036
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
Statement 1037
Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote
risk of electric shock from lightning.
Statement 1038
Warning
Warning
Warning
Warning
To report a gas leak, do not use a telephone in the vicinity of the leak.
Statement 1039
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
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Statement 1029
The covers are an integral part of the safety design of the product. Do not operate the unit without the
covers installed.
Statement 1077
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What you Need to Know
CLI Console Access
Use the new USB console port on the router to access the Cisco Internet Operating System (IOS) CLI
on the router and perform configuration tasks. A terminal emulation program, such as Microsoft
Windows HyperTerminal, is required to establish communication between the router and a PC. See the
“Connecting to a Console Terminal or Modem” section on page 3-30 for instructions.
NoteA Microsoft Windows USB driver must be installed before you establish physical connectivity
between the router and the PC.
Slot and Port Numbers
Cisco 2900 series and 3900 series ISRs have built in ports and new slots. The new slots accommodate
new modules and interface cards; Enhanced High-Speed WAN Interface Cards (EHWICs), Internal
Services Modules (ISMs), Packet Voice Data Modules (PVDM3), and Service Modules (SMs). See the
“Slot, Port, and Interface Information” section on page 1-28 for slot and port numbering.
What you Need to Know
Software Licenses
To use the following features on Cisco Integrated Services Routers, you must purchase a software
package.
• Gatekeeper
• IPS (subscription)
• SSL_VPN (counted)
• SNA Switching
See the “Getting Software Licenses for the Router” section on page 6-1 for more information.
Before you Begin
Before installing and connecting a Cisco Integrated Services Router, read the safety warnings and gather
the following tools and equipment.
• ESD-preventive cord and wrist strap
• Number 2 Phillips screwdriver
• Flat-blade screwdrivers: small, 3/16-in. (4 to 5 mm) and medium, 1/4-in. (6 to 7 mm)
–
To install or remove modules
–
To remove the cover, if you are upgrading memory or other components
• Screws that fit your rack
• Wire crimper
• Wire for connecting the chassis to an earth ground:
–
AWG 6 (13 mm2) wire for NEBS-compliant chassis grounding
–
AWG 1 4 ( 2 mm2) or larger wire for NEC-compliant chassis grounding
–
AWG 1 8 ( 1 mm2) or larger wire for EN/IEC 60950-compliant chassis grounding
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Unpacking the Router
Chapter 3 Installing and Connecting the Router
• For NEC-compliant grounding, an appropriate user-supplied ring terminal, with an inner diameter
of 1/4 in. (5 to 7 mm)
In addition, depending on the type of modules you plan to use, you might need the following equipment
to connect a port to an external network:
• Cables for connection to the WAN and LAN ports (dependent on configuration)
NoteFor more information on cable specifications, see the Cisco Modular Access Router Cable
Specifications document on Cisco.com.
• Ethernet hub or PC with a network interface card for connection to an Ethernet (LAN) port.
• Console terminal (an ASCII terminal or a PC running HyperTerminal or similar terminal emulation
software) configured for 9600 baud, 8 data bits, 1 stop bit, no flow control, and no parity.
• Modem for connection to the auxiliary port for remote administrative access (optional).
• Data service unit (DSU) or channel service unit/data service unit (CSU/DSU) as appropriate for
serial interfaces.
• External CSU for any CT1/PRI modules without a built-in CSU.
• NT1 device for ISDN BRI S/T interfaces (if not supplied by your service provider).
Unpacking the Router
Do not unpack the router until you are ready to install it. If the final installation site will not be ready
for some time, keep the chassis in its shipping container to prevent accidental damage. When you are
ready to install the router, proceed with unpacking it.
The router, accessory kit, publications, and any optional equipment you ordered may be shipped in more
than one container. When you unpack the containers, check the packing list to ensure that you received
all of the items on the list.
Installing the Router
If you need to install service modules, interface cards, and FRUs, you can install them either before or
after you install the router. Ideally, you install modules and interface cards when you have the best access
to the back panel of the router. Internal modules and FRUs, such as internal services modules (ISMs) or
packet voice data modules (PVDMs), and fan trays should be installed before rack-mounting. See the
“Installing and Upgrading Internal Modules and FRUs” section on page 5-1.
There are three methods of installing the router:
• Rack-Mounting the Chassis, page 3-5
• Setting the Chassis on a Desktop, page 3-12
• Mounting a Cisco 2901 or 2911 Router on a Wall, page 3-13
Warning
Cisco 2900 and 3900 Series Hardware Installation
3-4
Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.
Statement 1
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250963
SYS ACT POE
Cisco 2900 Series
CautionTo prevent damage to the chassis, never attempt to lift or tilt the chassis by holding it by the plastic panel
on the front. Always hold the chassis by the sides of the metal body.
Rack-Mounting the Chassis
Cisco 2900 series and 3900 series routers can be installed in 19-inch (48.26-cm) EIA and 23-inch
(58.42-cm) Southwestern Bell Corporation (SBC) racks. The Cisco 3900 series routers can also be
mounted in a 600-mm ETSI rack. Use the standard brackets shipped with the router for mounting the
chassis in a 19-inch EIA rack; you can order optional larger brackets for mounting the chassis in a
19-inch SBC rack.
You can mount the router in the following ways:
• Center-front mounting—Brackets attached in the center front of the chassis with only the front panel
facing forward.
• Center-back mounting—Brackets attached in the center back of the chassis with only the back panel
facing forward.
• Front mounting—Brackets attached at the front of the chassis with the front panel facing forward.
• Back mounting—Brackets attached at the back of the chassis with the back panel facing forward.
Installing the Router
Attaching Rack-Mount Brackets to Cisco 2901 Routers
For the Cisco 2900 series routers use four of the supplied number-8 Phillips flat-head screws to attach
the long side of each bracket to the router. For the Cisco 3900 series routers use four of the supplied
number-6 Phillips flat-head screws to attach the long side of each bracket to the router.
Figure shows how to attach the brackets to the sides of the router with the front panel forward.
Figure 3-1Bracket Installation for Front Mounting
Figure 3-2 shows how to attach the brackets to the sides of the router with the back panel forward.
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Figure 3-2Bracket Installation for Back Mounting
DO NOT REMOVE DURING
NETWORK OPERATION
Figure 3-3 shows how to attach the brackets to the sides of the router with center mounting.
Figure 3-3Bracket Installation for Center Mounting
DO NOT REMOVE DURING
NETWORK OPERATION
1
250967
SYS ACT POE
Cisco 2900 Series
Attaching Rack-Mount Brackets to Cisco 2911, Cisco 2921, and Cisco 2951 Routers
Attach the mounting brackets to the router chassis as shown in Figure 3-4 through Figure 3-7, using the
screws provided.
CautionDo not over torque the screws. The recommended torque is 15 to 18 inch-lb (1.7 to 2.0 N-m).
Attach the second bracket to the opposite side of the chassis. Use a number-2 Phillips screwdriver to
install the number-8 bracket screws.
CautionYour chassis installation must allow unrestricted airflow for chassis cooling.
4
2
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Cisco 2900 Series
250909
1
2
1
2
SYS ACT
POE
RPS
PS
DO NOT REMOVE DURING
NETWORK OPERATION
DO NOT REMOVE DURING
NETWORK OPERATION
250912
1
2
1
2
Figure 3-4Bracket Installation for Front Mounting
Installing the Router
123-inch SBC1 brackets
219-inch EIA brackets
1. Southwestern Bell Corporation (SBC)
Figure 3-5Bracket Installation for Center-Front Mounting
1
2
SYS ACT
Cisco 2900 Series
POE
RPS
PS
123-inch SBC brackets219-inch EIA brackets
Figure 3-6Bracket Installation for Back Mounting
250910
2
1
123-inch SBC brackets219-inch EIA brackets
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DO NOT REMOVE DURING
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DO NOT REMOVE DURING
NETWORK OPERATION
250913
1
2
1
2
250923
S
Y
S
A
C
T
S
Y
S
P
W
R
1
A
U
X
P
W
R
1
S
Y
S
P
W
R
2
A
U
X
P
W
R
2
Cisco 3900 Series
1
2
1
2
Figure 3-7Bracket Installation for Center-Back Mounting
123-inch SBC brackets219-inch EIA brackets
Attaching Rack-Mount Brackets to Cisco 3900 Series Routers
Chapter 3 Installing and Connecting the Router
Attach the mounting brackets to the router chassis as shown in Figure 3-8 through Figure 3-11, using the
screws provided.
CautionDo not over torque the screws. The recommended torque is 8 to 10 inch-lb (0.9 to 1.12 N-m).
Attach the second bracket to the opposite side of the chassis. Use a number-2 Phillips screwdriver to
install the number-6 bracket screws.
CautionYour chassis installation must allow unrestricted airflow for chassis cooling.
Figure 3-8Bracket Installation for Front Mounting
123-inch EIA brackets219-inch EIA brackets
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DO NOT REMOVE DURING
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DO NOT REMOVE DURING
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2
Figure 3-9Bracket Installation for Center-Front Mounting
Installing the Router
1
2
SY
S
SYS
AC
T
AU
X
SYS
P
W
R1
AU
P
X
W
R
1
P
W
R
2
P
WR
2
Cisco 3900 Series
123-inch EIA brackets219-inch EIA brackets
Figure 3-10Bracket Installation for Rear Mounting
250924
2
1
123-inch EIA brackets219-inch EIA brackets
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Chapter 3 Installing and Connecting the Router
Figure 3-11Bracket Installation for Center-Rear Mounting
1
123-inch EIA brackets219-inch EIA brackets
Mounting the Router in a Rack
After you attach the rack-mount brackets to the router chassis, use the screws provided with the rack to
install the chassis in the rack. (See Figure 3-12.)
DO NOT REMOVE DURING
NETWORK OPERATION
2
DO NOT REMOVE DURING
NETWORK OPERATION
250927
2
1
TipFor 23-inch SBC brackets start the lower pair of screws first, and rest the brackets on the lower screws
while you insert the upper pair of screws.
TipThe screw slots in the brackets are spaced to line up with every second pair of screw holes in the rack.
When the correct screw holes are used, the small threaded holes in the brackets line up with unused screw
holes in the rack. If the small holes do not line up with the rack holes, you must raise or lower the
brackets to the next rack hole.
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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DO NOT REMOVE DURING
NETWORK OPERATION
250914
1
Installing the Router
Warning
To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the
handles on modules (such as power supplies, fans, or cards); these types of handles are not designed
to support the weight of the unit.
Statement 1032
CautionBe sure to leave space above and below each router in a rack to allow for cooling air circulation.
Figure 3-12 shows a typical installation in a rack.
Figure 3-12Mounting the Chassis in a Rack (Typical)
SYS ACT
Cisco 2900 Series
POE
RPS
PS
1
250911
1Mounting screws (4)
Figure 3-13 shows an installation with a chassis rear-forward.
Figure 3-13Mounting the Chassis in a Rack, Rear Forward
1Mounting screws (4)
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Installing the Router
Grounding the Chassis
After the router is installed, you must connect the chassis to a reliable earth ground. For the chassis
ground connection procedures, see the “Chassis Grounding” section on page 3-15.
Setting the Chassis on a Desktop
You can place Cisco 2901, Cisco 2911, and Cisco 3900 series routers on a desktop or shelf.
NoteModels 2921 and above are not recommended for desktop mounting.
To install a Cisco 2901 or 2911 router on a desktop, first install the four rubber feet that are supplied in
the accessory kit. They provide anti-skid protection and space for air circulation. Peel the rubber feet
from the adhesive strip, and stick them onto the “+” marked on the bottom of the chassis.
Chapter 3 Installing and Connecting the Router
Warning
CautionDo not place anything on top of the router that weighs more than 10 pounds (4.5 kg), and do not stack
To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the
handles on modules (such as power supplies, fans, or cards); these types of handles are not designed
to support the weight of the unit.
Statement 1032
routers on a desktop. Excessive distributed weight of more than 10 pounds, or pound point load of
10 pounds on top could damage the chassis.
CautionYour chassis installation must allow unrestricted airflow for chassis cooling. For placing the router on a
desktop, keep at least 1 inch (2.54 cm) of clear space beside the cooling inlet and exhaust vents.
After the router is installed, you must connect the chassis to a reliable earth ground. For the chassis
ground connection procedures, see the “Chassis Grounding” section on page 3-15.
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Mounting a Cisco 2901 or 2911 Router on a Wall
This section explains how to mount Cisco 2901 and Cisco 2911 routers on a wall or other vertical
surface. We do not recommend mounting a Cisco 2921, 2951, or Cisco 3900 series router on a wall.
The following warning applies to Cisco 2901 and 2911 routers:
Installing the Router
Warning
TipWhen choosing a wall-mounting location, consider cable limitations and wall structure.
NoteThe Cisco 2901 and Cisco 2911 routers use brackets designed for the 19-inch EIA rack-mounting, the
This unit is intended to be mounted on a wall. Please read the wall mounting instructions carefully
before beginning installation. Failure to use the correct hardware or to follow the correct procedures
could result in a hazardous situation to people and damage to the system.
part number 700-16559-01 is stamped on the bracket (shown in Figure 3-15).
Attaching Brackets to the Router for Wall Mounting
Attach the standard brackets to the chassis using the four screws provided for each bracket.
Attaching the Router to a Wall
Attach the router to the wall using the brackets previously attached. Use attachment hardware that you
provide as follows:
• For attaching to a wall stud, each bracket requires two number-10 wood screws (round- or pan-head)
with number-10 washers, or two number-10 washer-head screws. The screws must be long enough
to penetrate at least 1.5 inches (38.1 mm) into the supporting wood or metal wall stud.
• For hollow-wall mounting, each bracket requires two wall anchors with washers. Wall anchors and
washers must be size number 10.
Statement 248
• Route the cables so that they do not put a strain on the connectors or mounting hardware.
• The NEBS air baffle (Cisco 2911) should not be used when wall-mounting the router.
CautionThis unit is intended to be mounted on a wall. Please read the wall mounting instructions carefully before
beginning installation. Failure to use the correct hardware or to follow the correct procedures could
result in a hazardous situation to people and damage to the system.
CautionThe router must be mounted with the power connections oriented downward. Failure to do so could
present a fire hazard.
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Chapter 3 Installing and Connecting the Router
Figure 3-14 and Figure 3-15 show typical wall-mounted installations.
Figure 3-14Mounting the 2901 Chassis on the Wall
Figure 3-15Mounting the 2911 Chassis on the Wall
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After the router is installed, you must connect the chassis to a reliable earth ground. For the chassis
ground connection procedures, see the “Chassis Grounding” section on page 3-15.
Chassis Grounding
Chassis Grounding
Warning
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly
touch the backplane with your hand or any metal tool, you could shock yourself.
Statement 1024
Statement 94
You must connect the chassis to a reliable earth ground; the ground wire must be installed in accordance
with local electrical safety standards.
• For NEBS-compliant grounding, use size 6 AWG (13 mm
2
) copper wire and the ground lug provided
in the accessory kit.
NoteNEBS-compliant grounding is not supported on the Cisco 2901 router.
NoteThis equipment is suitable for installation in Network Telecommunications Facilities and
locations where the NEC applies. The equipment is suitable for installation as part of the
Common Bonding Network (CBN).
• For NEC-compliant grounding, use size 14 AWG (2 mm
2
) or larger copper wire and an appropriate
user-supplied ring terminal with an inner diameter of 1/4 in. (5–7 mm).
• For EN/IEC 60950-compliant grounding, use size 18 AWG (1 mm
2
) or larger copper wire and an
appropriate user-supplied ring terminal.
To install the ground connection for a Cisco 2900 or Cisco 3900 series router, perform the following
steps:
Step 1Strip one end of the ground wire to the length required for the ground lug or terminal.
• For the NEBS ground lug—approximately 0.75 inch (20 mm)
• For user-provided ring terminal—as required
Step 2Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size.
Step 3Attach the ground lug or ring terminal to the chassis as shown in Figure 3-16, Figure 3-17, Figure 3-18,
Figure 3-18, or Figure 3-19. For a ground lug, use the two screws with captive locking washers provided.
For a ring terminal, use one of the screws provided. Tighten the screws to a torque of 8 to 10 in-lb
(0.9 to 1.1 N-m).
OL-18712-01
Cisco 2900 and 3900 Series Hardware Installation
3-15
Page 100
Chassis Grounding
250984
50983
Chapter 3 Installing and Connecting the Router
Figure 3-16Chassis Ground Connection Using Ring Terminal on Cisco 2901 Chassis
Figure 3-17NEBS-Compliant Chassis Ground Connection on Cisco 2911 Chassis
2
Cisco 2900 and 3900 Series Hardware Installation
3-16
OL-18712-01
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