18
Note On the Cisco 1841 router,the numbering format for configuring an async interface is 0/slot/port. To configurethe 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:
•CiscoRouter 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 page18.
•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.
Forinstructions 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 theCisco 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
Toobtain 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.
Table4 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