Cisco 1800 Series User manual

Quick Start Guide
Cisco 1800 Series Integrated Services Router (Modular) Quick Start
Guide
INCLUDING LICENSE AND WARRANTY
1Cisco One-Year Limited Hardware Warranty Terms, page 2
2Overview, page 3
3Documents, Equipment, and Tools, page 3
4Install Chassis, page 4
5Connecting Cables, page 13
6Power Up the Router, page 15
7Interface Numbering, page 17
8Perform Initial Configuration, page 18
9Where to Go Next, page 22
10 Obtaining Documentation, page 23
11 Documentation Feedback, page 23
12 Obtaining Technical Assistance, page 23
13 Obtaining Additional Publications and Information, page 24

2
1Cisco One-Year Limited Hardware Warranty Terms
There are special terms applicable to your hardware warranty and various services that you can use during the warranty period.
Your formal Warranty Statement, including the warranties and license agreements applicable to Cisco software, is available on
Cisco.com. Follow these steps to access and download the Cisco Information Packet and your warranty and license agreements
from Cisco.com.
1. Launch your browser, and go to this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm
The Warranties and License Agreements page appears.
2. To read the Cisco Information Packet, follow these steps:
a. Click the Information Packet Number field, and make sure that the part number 78-5235-03A0 is highlighted.
b. Select the language in which you would like to read the document.
c. Click Go.
The Cisco Limited Warranty and Software License page from the Information Packet appears.
d. Read the document online, or click the PDF icon to download and print the document in Adobe Portable Document
Format (PDF).
Note You must have Adobe Acrobat Reader to view and print PDF files. You can download the reader from
Adobe’s website: http://www.adobe.com
3. To read translated and localized warranty information about your product, follow these steps:
a. Enter this part number in the Warranty Document Number field:
78-10747-01C0.
b. Select the language in which you would like to view the document.
c. Click Go.
The Cisco warranty page appears.
d. Review the document online, or click the PDF icon to download and print the document in Adobe Portable Document
Format (PDF).
You can also contact the Cisco service and support website for assistance:
http://www.cisco.com/public/Support_root.shtml.
Duration of Hardware Warranty
One (1) Year
Replacement, Repair, or Refund Policy for Hardware
Cisco or its service center will use commercially reasonable efforts to ship a replacement part within ten (10) working days after
receipt of a Return Materials Authorization (RMA) request. Actual delivery times can vary, depending on the customer location.
Cisco reserves the right to refund the purchase price as its exclusive warranty remedy.
To Receive a Return Materials Authorization (RMA) Number
Contact the company from whom you purchased the product. If you purchased the product directly from Cisco, contact your
Cisco Sales and Service Representative.
Complete the information below, and keep it for reference.
Company product purchased from
Company telephone number
Product model number
Product serial number
Maintenance contract number

3
2Overview
The Cisco 1800 series integrated services routers includes the Cisco 1841 router, which is a data-only router. Cisco 1841 routers
support WAN interface cards (WIC), voice/WAN interface cards (VWICs) in data mode only, single-wide high-speed WAN
interface cards (HWICs), and advanced integration module (AIMs). This router has two WIC/VWIC/HWIC slots.
Note The interface numbering for this Cisco 1841 router is different from the numbering in Cisco 1700 series routers. (See
the “Interface Numbering” section on page 17.)
This document provides the minimum necessary information to help you install the router, power it up, and configure a network
connection. This document directs you to other documents for the following information:
•More detailed router installation instructions, descriptions, and specifications
•Procedures for installing modules, interface cards, power supplies, and memory
•Software configuration
•Regulatory compliance and safety information
Product Serial Number Location
The serial number label for the Cisco 1841 router is located on the rear of the chassis, underneath interface card slot 0.
For detailed product serial number location on the chassis, refer to the online Cisco 1800 series hardware installation
documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/hw/index.htm
Cisco Product Identification Tool
The Cisco Product Identification (CPI) tool provides detailed illustrations and descriptions showing where to locate serial
number labels on Cisco products. It includes the following features:
•A search option that allows browsing for models using a tree-structured product hierarchy
•A search field on the final results page making it easier to look up multiple products
•End of sale products are 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
3Documents, Equipment, and Tools
User Documentation
For complete platform documentation, refer to the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/index.htm
All the documents referenced in this quick start guide are available on Cisco.com. See the “Where to Go Next” section on
page 22. To view or print an online document in its original page format, click the PDF icon.
Translated Versions
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/qsg/index.htm

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http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/qsg/index.htm
Items Included with Cisco 1841 Routers
Your router package should include the following items in addition to the router:
•One blue RJ-45-to-DB-9 console cable; one DB-9-to-DB-25 modem adapter
•Power cord
•Cisco.com card; Cisco product registration card
•Regulatory Compliance and Safety Information for Cisco 1840 Routers document
•Cisco Router and Security Device Manager (SDM) Quick Start Guide document
•Cisco 1800 Series Integrated Services Routers (Modular) Quick Start Guide (this document)
Items Not Included
Individual items in this list may be required for your installation:
•PC with Hyperterminal or similar terminal emulation program, or a modem for remote administrative access
•Cables for WAN interfaces, LAN interfaces, or USB interface
•Cable ties, number 2 Phillips screwdriver
•Other typical equipment, such as channel service unit/data service unit (CSU/DSU); NT1 device for ISDN-BRI S/T; Ethernet
hub; USB devices
Note The onboard USB ports (version 1.1) support only USB devices approved and qualified by Cisco.
Note The USB port (version 1.1) is intended for future use only.
4Install Chassis
This section contains basic installation procedures. For more detailed installation instructions, refer to the Cisco 1800 series
hardware installation documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/hw/index.htm
Safety Information
The Regulatory Compliance and Safety Information for Cisco 1840 Routers document contains translations of the warnings
that appear in this quick start guide.
For safety information you must know before working on your Cisco router, refer to the Regulatory Compliance and Safety
Information for Cisco 1840 Routers document that accompanied this device.

5
Warning Definition
Warning IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with
standard practices for preventing accidents. Use the statement number provided at the end of each
warning to locate its translation in the translated safety warnings that accompanied this device.
Statement 1071
SAVE THESE INSTRUCTIONS
Waarschuwing
BELANGRIJKE VEILIGHEIDSINSTRUCTIES
Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan
veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij
elektrischeschakelingenbetrokkenrisico'sendientuopdehoogtetezijn van destandaardpraktijken
om ongelukken te voorkomen. Voor een vertaling van de waarschuwingen die in deze publicatie
verschijnen, dient u de vertaalde veiligheidswaarschuwingen te raadplegen die bij dit apparaat
worden geleverd.
Opmerking BEWAAR DEZE INSTRUCTIES.
Varoitus
TÄRKEITÄ TURVALLISUUTEEN LIITTYVIÄ OHJEITA
Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin
työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja
tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä asiakirjassa esitettyjen varoitusten
käännökset löydät laitteen mukana toimitetuista ohjeista.
Huomautus SÄILYTÄ NÄMÄ OHJEET
Attention
IMPORTANTES INFORMATIONS DE SÉCURITÉ
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer
des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des
dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment
utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements
figurant dans cette publication, consultez les consignes de sécurité traduites qui accompagnent cet
appareil.
Remarque CONSERVEZ CES INFORMATIONS
Warnung
WICHTIGE SICHERHEITSANWEISUNGEN
DiesesWarnsymbolbedeutetGefahr.Siebefindensichin einerSituation,diezu einerKörperverletzung
führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit
elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von
Unfällen bewusst. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise sind im
Lieferumfang des Geräts enthalten.
Hinweis BEWAHREN SIE DIESE SICHERHEITSANWEISUNGEN AUF

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Avvertenza
IMPORTANTI ISTRUZIONI SULLA SICUREZZA
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli
relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Per le
traduzioni delle avvertenze riportate in questo documento, vedere le avvertenze di sicurezza che
accompagnano questo dispositivo.
Nota CONSERVARE QUESTE ISTRUZIONI
Advarsel
VIKTIGE SIKKERHETSINSTRUKSJONER
Dette varselssymbolet betyr fare. Du befinner deg i en situasjon som kan forårsake personskade. Før
du utfører arbeid med utstyret, bør du være oppmerksom på farene som er forbundet med elektriske
kretssystemer, og du bør være kjent med vanlig praksis for å unngå ulykker. For å se oversettelser av
advarslene i denne publikasjonen, se de oversatte sikkerhetsvarslene som følger med denne enheten.
Merk TA VARE PÅ DISSE INSTRUKSJONENE
Aviso
INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. O utilizador encontra-se numa situação que poderá ser
causadora de lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha em
atenção os perigos envolvidos no manuseamento de circuitos eléctricos e familiarize-se com as
práticas habituais de prevenção de acidentes. Para ver traduções dos avisos incluídos nesta
publicação, consulte os avisos de segurança traduzidos que acompanham este dispositivo.
Nota GUARDE ESTAS INSTRUÇÕES
¡Advertencia!
INSTRUCCIONES IMPORTANTES DE SEGURIDAD
Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los
procedimientos estándar de prevención de accidentes. Vea las traducciones de las advertencias que
acompañan a este dispositivo.
Nota GUARDE ESTAS INSTRUCCIONES
Varning!
VIKTIGA SÄKERHETSANVISNINGAR
Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna
till vanliga förfaranden för att förebygga olyckor. Se översättningarna av de varningsmeddelanden som
finns i denna publikation, och se de översatta säkerhetsvarningarna som medföljer denna anordning.
OBS! SPARA DESSA ANVISNINGAR

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Aviso
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

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Advarsel
VIGTIGE SIKKERHEDSANVISNINGER
Dette advarselssymbol betyder fare. Dubefinder dig i en situationmed 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

9
Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. Statement 1
Warning Read the installation instructions before connecting the system to the power source. Statement 1004
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040
Warning To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended
ambient temperature of 40 deg. Statement 1047

10
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. Statement 1015
Installing the Router
Note Cisco 1800 series routers are normally ordered with modules and interface cards. Before you remove or install any
modules or interface cards, refer to the documents that accompany those items or to the online Cisco 1800 series
hardware installation documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/hw/index.htm
You can set any Cisco 1800 series router on a desktop or mount it on the wall. See the applicable instructions in the following
sections:
•Wall-Mounting the Router, page 10
•Installing the Router on a Desktop, page 12
Caution To prevent damage to the chassis, never attempt to lift or tilt the chassis by the plastic panel on the front. Always
hold the chassis by the metal body.
Wall-Mounting the Router
Warning 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. Statement 248
The Cisco 1841 router can be wall-mounted by using two No. 6, 3/4-inch screws and the mounting features on the bottom of
the router. We recommend using pan-head or round-head screws (not included).
The wall-mounting features on the router are shown in Figure 1.

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Figure 1 Wall-Mounting Features on the Cisco 1841 Router
To mount the router on a wall or other surface, follow these steps:
Step 1 Detach the four rubber feet from the bottom of the chassis.
Step 2 Install the two screws 6.00 inches (152 mm) horizontally apart on a wall or other vertical surface. The screws should
protrude 0.25 inches (6 to 7 mm) from the surface of the wall.
Step 3 Hang the router on the screws, front panel down. This is the appropriate orientation for safe use. See Figure 2.
1Wall-mounting features
103162
11
6.00 inches

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Figure 2 Wall-Mounting the Cisco 1841 Router
Caution If you install the screws in drywall, use hollow-wall anchors (1/8 inch by 5/16 inch [0.32 cm by 0.79 cm]) to secure
the screws. If the screws are not properly anchored, the strain of the cables connected to the router back panel could
pull the router from the wall.
Installing the Router on a Desktop
The Cisco 1841 router is shipped with the rubber feet attached to the chassis.
Caution Your chassis installation must allow unrestricted airflow for chassis cooling. For placing on a desktop, keep at least
one inch of clear space beside the cooling inlet and exhaust vents.
Caution Do not place any items that weigh more than 10 pounds (4.5 kilograms) on top of the chassis, and do not stack
routers on top of each other.
1Wall 3Router
2Mounting screws
103163
1
2
3

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Grounding the Chassis
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
Warning 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, or you could shock yourself. Statement 94
Warning This equipment needs to be grounded. Use a green and yellow 14 AWG ground wire to connect the host to earth
ground during normal use. Statement 190
To connect the chassis to a reliable earth ground, using a ring terminal and size 14 AWG (2 mm2) wire, follow these steps:
Step 1 Strip one end of the ground wire to expose approximately 3/4 inch (20 mm) of conductor.
Step 2 Crimp the 14 AWG green ground wire to a UL Listed/CSA certified ring terminal, using a crimping tool that is
recommended by the ring terminal manufacturer. The ring terminal provided on the back panel of the router is suitable
for a No. 6 grounding screw.
Step 3 Attach the ring terminal to the chassis as shown in Figure 3. Use a number 2 Phillips screwdriver and the screw supplied
with the ring terminal. Tighten the screw to a torque of 8 to 10 inch-pounds (0.9 to 1.1 newton meters.)
Step 4 Connect the other end of the ground wire to a known good electrical grounding point such as a service panel grounding lug.
Consult a licensed electrician if you have any questions about the suitability of the ground connection.
Figure 3 Chassis Ground Connection on the Cisco 1841 Router
5Connecting Cables
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001
This section provides an overview of the cabling for different ports and connections on the Cisco 1841 router.
For detailed information on the connections, cables, and pinouts, refer to the following documents:
•Cisco Interface Cards Installation Guide at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/hw_inst/wic_inst/wic_doc/index.htm
117083
Ring terminal
attachment
CISCO 1841
100-240 VAC-
1 A
50/60 Hz

14
•Cisco Modular Access Router Cable Specifications at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3600/hw_inst/cabling/marcabl.htm
WAN and LAN Connections
The connections and cables listed in Table 1 are described in detail in the Cisco 1800 series hardware installation documents at
the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/hw/index.htm
Caution Do not connect a WAN, telephone, or fax cable to an interface card until you have completed the installation
procedure.
Warning Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To
avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away
from the router first. Statement 1026
Table 1 summarizes the basic WAN and LAN connections for the Cisco 1841 router.
Table 1 WAN and LAN Connections
Port or Connection Port Type, Color1
1. The color codes are specific to cables shipped by Cisco
Connected To: Cable
Fast Ethernet (FE) RJ-45, yellow Ethernet hub Crossover to connect to a router
Straight-through to connect to a
switch
T1/E1 WAN RJ-48C T1 or E1 network or CSU/DSU RJ-48 T1/E1 straight-through
(Crossover to connect ot a PBX or
any other equipment)
Cisco serial (1T) 60-pin D-sub, blue CSU/DSU and serial network or
equipment Cisco serial transition cable that matches the signaling protocol
(EIA/TIA-232, EIA/TIA-449, V.35,
X.21, or EIA/TIA-530) and the serial
port operating mode (DTE or DCE).
Refer to the Cisco Modular Access
Router Cable Specifications
document for information about
selecting these cables.
Cisco Smart serial (2T) Cisco Smart compact
connector, blue CSU/DSU and serial network or equipment
For WIC-2T and WIC-2A/S only
DSL RJ-11C/RJ-14C Network demarcation device for
service provider’s DSL interface RJ-11 straight-through for 2-wire
RJ-14 straight-through for 4-wire
BRI S/T WAN
(external NT12)
2. NT1 = Network Termination 1
RJ-45, orange NT1 device or PINX3
3. PINX = Private integrated network exchange
RJ-45 straight-through
BRI U WAN
(built-in NT1) RJ-49C/CA-A11, orange ISDN network RJ-49 straight-through
Analog modem RJ-11 PSTN RJ-11 straight-through
56/64-kbps
CSU/DSU 8-pin modular RJ-48S interface RJ-48 straight-through

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Console, Auxiliary, and USB Port Connections
The connections described in Table 2 provide system management access.
Note The USB port (version 1.1) is intended for future use only.
Power Connections
Connect the router power cord to a 15A, 120 VAC power source or 10A, 240 VAC power source.
Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the
protective device is rated not greater than: 15A, 120VAC (10A, 240VAC). Statement 1005
Note The input voltage tolerance limits for AC power are 85 and 264 VAC.
6Power Up the Router
Checklist for Power Up
You are ready to power up the Cisco 1841 router after the following steps are completed:
•Chassis is securely mounted and grounded. (See the “Install Chassis” section on page 4.)
•Power and interface cables are connected. (See the “Connecting Cables” section on page 13.)
•Make sure that the external CompactFlash memory card is properly seated into the slot. For installation instructions, refer
to the online Cisco 1800 series hardware installation documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/hw/index.htm
•PC with terminal emulation program is connected to the console port, powered up, and configured for 9600 baud, 8 data
bits, 1 stop bit, no flow control, and no parity.
•Suitable PC COM port is selected in the terminal emulation program.
Note For initial power up, a direct console connection is recommended. After the initial configuration is completed, a remote
modem connection can be used for router management.
Caution To ensure adequate cooling, never operate the router unless the cover and all modules and cover plates are installed.
Table 2 Console and Auxiliary Port Connections
Port or Connection Color or Type Connected To: Cable
Console Light blue PC or ASCII terminal communication
port (usually labeled COM) RJ-45-to-DB-9 console cable
Auxiliary Black Modem for remote access RJ-45-to-DB-9 console cable and
DB-9-to-DB-25 adapter
USB — Peripheral devices USB cable

16
Caution To prevent damage to the ejector mechanism, the ejector button next to the CompactFlash memory card must
remain fully seated when not being used to eject a CompactFlash memory card.
Power-Up Procedure
To power up your Cisco 1841 router and verify that it goes through its initialization and self-test, perform this procedure. When
the procedure is finished, the Cisco 1841 router is ready to configure.
Note To view the boot sequence, you must have a console connection to the Cisco 1841 router before it powers up.
Step 1 Make sure that your PC is powered up and connected as described in the “Checklist for Power Up” section on page 15.
Step 2 Move the power switch to the ON position. The SYS PWR LED on the front of the chassis blinks green and the fans
operate. If this does not happen, refer to the "Troubleshooting" module in the online Cisco 1800 series hardware
installation documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/hw/index.htm
Startup messages appear in your terminal emulation program window. When the startup messages end, the SYS PWR
LED comes on solid green.
Caution Do not press any keys on the keyboard until the messages stop and the SYS PWR LED is solid green. Any keys
pressed during this time are interpreted as the first command typed when the messages stop, which might cause the
router to power off and start over. It takes a few minutes for the messages to stop.
You may see different startup messages:
•If you see the following messages, the router has booted with a configuration file and is ready for initial
configuration using Cisco Router and Security Device Manager (SDM):
yourname con0 is now available
Press RETURN to get started.
Note Because SDM is installed on your router by default, we recommend using SDM to perform the initial
configuration.
If SDM is installed on your router, we recommend using SDM to perform the initial configuration. See the “Initial
Configuration Using Cisco Router and Security Device Manager” section on page 18 to learn how to configure your
router using SDM, or how to obtain SDM and install it on your router.
•If you see the following messages, the router has booted and is ready for initial configuration using the setup
command facility or the command-line interface (CLI):
--- System Configuration Dialog ---
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Would you like to enter the initial configuration dialog? [yes/no]:
To learn how to use the setup command facility to configure the router, see the “Initial Configuration Using Setup
Command Facility” section on page 18. To learn how to use the CLI to configure the router, see the “Initial
Configuration Using Cisco CLI—Manual Configuration” section on page 21.

17
If the rommon 1> prompt appears, your system has booted in ROM monitor mode. For information on using ROM
monitor, refer to the “Troubleshooting and Maintenance” module in the online Cisco 1800 series software
configuration documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1800/sw/index.htm
Verify the Front Panel LED Indications
The indicator LEDs described in Table 3 provide power, activity, and status information.
Verify the Hardware Configuration
Verify the router hardware configuration by entering the following commands:
•show version—Displays the system hardware version; the installed software version; the names and sources of configuration
files; the boot images; and the amount of installed DRAM, NVRAM, and flash memory.
•show diag—Lists and displays diagnostic information about the installed controllers, interface processors, and port
adapters. Typical examples are network modules, interface cards (WICs, VWICs, HWICs) and advanced integration
modules (AIMs).
7Interface Numbering
Each individual interface (port) on a Cisco 1841 router is identified by a number. A Cisco 1841 router contains the following
wide-area network (WAN) and local-area network (LAN) interface types:
•Two onboard Fast Ethernet LAN interfaces
•Two slots in which you can install WICs, VWICs (data only), and HWICs
The numbering format for the slots is interface-type 0/slot-number/port-number.Table 4 summarizes the interface numbering.
Table 3 LED Indicators
LED Color Description Location
SYS PWR Green Router has successfully booted up and the software is functional. This LED blinks
while booting or in the ROM monitor. Front
SYS ACT Green Blinking when any packets are transmitted or received on any WAN or LAN, or when
monitoring system activity. Front
CF Green On when compact flash memory is busy. Do not remove CompactFlash memory card
when this light is on. Back
FDX (FE 0) Green On indicates full-duplex operation. Off indicates half-duplex operation. Back
100 (FE 0) Green On indicates a 100-Mbps link. Off indicates a 10-Mbps link. Back
Link (FE 0) Green On when the router is correctly connected to a local Ethernet LAN through Ethernet
port 0. Back
FDX (FE 1) Green On indicates full-duplex operation. Off indicates half-duplex operation. Back
100 (FE 1) Green On indicates a 100-Mbps link. Off indicates a 10-Mbps link. Back
Link (FE 1) Green On when the router is correctly connected to a local Ethernet LAN through Ethernet
port 1. Back
AIM Green On indicates presence of an AIM in the internal AIM slot. Back

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Note On the Cisco 1841 router, the numbering format for configuring an async interface is 0/slot/port. To configure the line
associated with an async interface, simply use the interface number to specify the async line. For example, line 0/0/0
specifies the line associated with interface serial 0/0/0 on a WIC-2A/S in slot 0. Similarly, line 0/1/1 specifies the line
associated with interface async 0/1/1 on a WIC-2AM in slot 1.
8Perform Initial Configuration
You can configure your router by using one of the following tools:
•Cisco Router and Security Device Manager (SDM)—See the “Initial Configuration Using Cisco Router and Security Device
Manager” section on page 18.
•Setup command facility—See the “Initial Configuration Using Setup Command Facility” section on page 18.
•Command-line interface (CLI)—See the “Initial Configuration Using Cisco CLI—Manual Configuration” section on
page 21.
Initial Configuration Using Cisco Router and Security Device Manager
If the following messages appear at the end of the startup sequence, Cisco Router and Security Device Manager (SDM) is
installed on your router:
yourname con0 is now available
Press RETURN to get started.
For instructions on configuring your router by using SDM, refer to the Cisco Router and Security Device Manager (SDM) Quick
Start Guide that shipped with your router.
Tip If the messages above do not appear, SDM and the Cisco Router and Security Device Manager (SDM) Quick Start
Guide were not shipped with your router. If you want to use SDM, you can download the latest version of SDM and
instructions for installing it on your router from the following location:
http://www.cisco.com/pcgi-bin/tablebuild.pl/sdm
To obtain the SDM quick start guide, SDM release notes, and other SDM documentation, go to www.cisco.com/go/sdm
and click the Technical Documentation link.
Table 4 Interface Numbering
Slot Number Slot Type Slot Numbering Range Example1
1. The interfaces listed are examples only; other possible interface types are not listed.
Onboard Ports Fast Ethernet 0/0 and 0/1 interface fastethernet 0/0
Slot 0 HWIC/WIC/VWIC2
2. VWICs are data-only in Cisco 1841 routers.
0/0/0 to 0/0/3 interface serial 0/0/0
line async 0/0/0
Slot 1 HWIC/WIC/VWIC20/1/0 to 0/1/3 interface serial 0/1/0
line async 0/1/0

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Initial Configuration Using Setup Command Facility
This section shows how to use the setup command facility to configure a hostname for the router, set passwords, and configure
an interface for communication with the management network.
If the following messages appear at the end of the startup sequence, the setup command facility has been invoked automatically:
--- System Configuration Dialog ---
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Would you like to enter the initial configuration dialog? [yes/no]:
The setup command facility prompts you for basic information about your router and network, and it creates an initial
configuration file. After the configuration file is created, you can use the CLI or Cisco Router and Security Device Manager to
perform additional configuration.
The prompts in the setup command facility vary, depending on your router model, the installed interface modules, and the
software image. The following example and the user entries (in bold) are shown as examples only.
For help with interface and port numbering, see the “Interface Numbering” section on page 17.
Note If you make a mistake while using the setup command facility, you can exit and run the setup command facility again.
Press Ctrl-C, and enter the setup command at the privileged EXEC mode prompt (Router#).
Step 1 To proceed using the setup command facility, enter yes:
Would you like to enter the initial configuration dialog? [yes/no]: yes
Step 2 When the following messages appear, enter yes to enter basic management setup:
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the system
Would you like to enter basic management setup? [yes/no]: yes
Step 3 Enter a hostname for the router (this example uses Router):
Configuring global parameters:
Enter host name [Router]: Router
Step 4 Enter an enable secret password. This password is encrypted (more secure) and cannot be seen when viewing the
configuration:
The enable secret is a password used to protect access to
privileged EXEC and configuration modes. This password, after
entered, becomes encrypted in the configuration.
Enter enable secret: xxxxxx
Step 5 Enter an enable password that is different from the enable secret password. This password is not encrypted (less secure)
and can be seen when viewing the configuration:
The enable password is used when you do not specify an
enable secret password, with some older software versions, and
some boot images.
Enter enable password: xxxxxx

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Step 6 Enter the virtual terminal password, which prevents unauthenticated access to the router through ports other than the
console port:
The virtual terminal password is used to protect
access to the router over a network interface.
Enter virtual terminal password: xxxxxx
Step 7 Respond to the following prompts as appropriate for your network:
Configure SNMP Network Management? [yes]:
Community string [public]:
A summary of the available interfaces is displayed.
Note The interface numbering that appears depends on the type of Cisco modular router platform and on the
installed interface modules and cards.
Current interface summary
Controller Timeslots D-Channel Configurable modes Status
T1 0/0/0 24 23 pri/channelized Administratively up
T1 0/0/1 24 23 pri/channelized Administratively up
T1 0/1/0 24 23 pri/channelized Administratively up
T1 0/1/1 24 23 pri/channelized Administratively up
Any interface listed with OK? value "NO" does not have a valid configuration
Interface IP-Address OK? Method Status Prol
FastEthernet0/0 unassigned NO unset up up
FastEthernet0/1 unassigned NO unset up dow
Step 8 Select one of the available interfaces for connecting the router to the management network:
Enter interface name used to connect to the
management network from the above interface summary: fastethernet0/0
Step 9 Respond to the following prompts as appropriate for your network:
Configuring interface FastEthernet0/0:
Use the 100 Base-TX (RJ-45) connector? [yes]: yes
Operate in full-duplex mode? [no]: no
Configure IP on this interface? [yes]: yes
IP address for this interface: 172.1.2.3
Subnet mask for this interface [255.255.0.0] : 255.255.0.0
Class B network is 172.1.0.0, 26 subnet bits; mask is /16
Step 10 The configuration is displayed:
The following configuration command script was created:
hostname Router
enable secret 5 $1$D5P6$PYx41/lQIASK.HcSbfO5q1
enable password xxxxxx
line vty 0 4
password xxxxxx
snmp-server community public
!
no ip routing
!
interface FastEthernet0/0
speed 100
half-duplex
ip address 172.1.2.3 255.255.0.0
!
interface FastEthernet0/1
shutdown
no ip address