Specifications
Table Of Contents
- Software Configuration Guide
- Contents
- Preface
- Understanding Interface Numbering and Cisco IOS Software Basics
- Understanding Interface Numbering
- Understanding Cisco IOS Software Basics
- Upgrading to a New Cisco IOS Release
- Where to Go Next
- Using the Setup Command Facility
- Before Starting Your Router
- Using the setup Command Facility
- Configuring Global Parameters
- Configuring Interface Parameters
- Completing the Configuration
- Where to Go Next
- Configuring with the Command-Line Interface
- Configuring the Host Name and Password
- Configuring 1-Port and 2-Port Ethernet Interfaces
- Configuring Fast Ethernet Interfaces
- Configuring Asynchronous/Synchronous Serial Network Modules or WAN Interface Cards
- Configuring 16-Port and 32-Port Asynchronous Network Modules
- Configuring ISDN BRI WAN Interface Cards
- Configuring T1 and E1 Interfaces
- Configuring T1 (FT1) WAN Interface Cards
- Configuring ATM Interfaces
- Configuring Inverse Multiplexing for ATM Interfaces
- Configuring Analog Modem Interfaces
- Configuring Wireless Multipoint Interfaces
- Checking the Interface Configuration
- Configuring 1-Port ADSL WAN Interface Card
- Configuring the NM-AIC-64, Contact Closure Network Module
- Configuring the 1-Port HSSI Network Module
- Configuring the Compression Network Module for the Cisco 3600 Series Routers
- Configuring the Digital Modem Network Module for the Cisco 3640 Router
- Prerequisites
- Configuration Tasks
- Configure the E1/T1 Network Module for ISDN PRI
- Configure the ISDN D-Channel Serial Interfaces
- Configure the Loopback Interface
- Configure the LAN Interface
- Create the Group Asynchronous Interface
- Configure the ISDN Dialer Interface
- Configure the Default IP Pool Information
- Configure Modem Lines for Dial-In and Dial-Out
- Configuration Example
- Configuring 1-Port G.SHDSL WAN Interface Card
- Saving Configuration Changes
- Where to Go Next
- Configuring Voice-over-IP
- Voice-over-IP Prerequisites
- Configuring the Voice Interface
- Voice-over-IP Configuration Examples
- Where to Go Next
- Configuration Examples
- Cisco 2600 Series Router Configuration Example
- Cisco 3631 Router Configuration Example
- Cisco 3725 Router Configuration Example
- 1-Port ADSL WAN Interface Card Configuration Examples
- NM-AIC-64, Contact Closure NetworkConfiguration Examples
- Cisco 3640 Central Site Configuration to Support ISDN and Modem Calls
- Formatting the Compact Flash Memory Cards
- Using the ROM Monitor
- Index

CHAPTER
1-1
Software Configuration Guide For Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-03
1
Understanding Interface Numbering and
Cisco IOS Software Basics
This chapter provides an overview of the interface numbering in the Cisco 2600 series, Cisco 3600
series, and Cisco 3700 series routers. It also describes how to use the Cisco IOS software commands.
Understanding Interface Numbering
This section contains information with which you should be familiar before you begin to configure your
router for the first time, including interface numbering and what you should do before starting your
router.
Cisco 2600 Series Interface Numbering
Each network interface on a Cisco 2600 series router is identified by a slot number and a unit number.
Table 1-1 lists the router models and summarizes the interfaces supported on each model that are
available in the Cisco 2600 series routers.
Table 1-1 Summary of Cisco 2600 Series Router Models and Interfaces
Model
Ethernet
(10BASE-T)
Token-Ring
(RJ-45)
Fast
Ethernet
(10/100)
Network
Module Slot
WAN
Interface
Card Slots
Advanced
Integration
Module Slots
Cisco 2610 1 1 2 1
Cisco 2610XM 1 1 2 1
Cisco 2611 2 1 2 1
Cisco 2611XM 2 1 2 1
Cisco 2612 1 1 1 2 1
Cisco 2613 1 1 2 1
Cisco 2620 1 1 2 1
Cisco 2620XM 1 1 2 1
Cisco 2621 2 1 2 1
Cisco 2621XM 2 1 2 1
Cisco 2650 1 1 2 1