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
C-1
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-03
APPENDIX
C
Using the ROM Monitor
This appendix describes the ROM monitor (also called the bootstrap program), which is the firmware
that runs when you power on or restart the Cisco 2600, Cisco 3600 and Cisco 3700 series router. During
normal operation, the ROM monitor helps to initialize the processor hardware and boot the operating
system software. You can also use the ROM monitor to help you isolate or rule out hardware problems
encountered when installing your router.
This appendix contains the following sections:
• Entering the ROM Monitor Mode
• ROM Monitor Commands
• ROM Monitor Syntax Conventions
• Command Descriptions
• Procedures for Recovering Boot and System Images
Entering the ROM Monitor Mode
To use the ROM monitor, you must have access to the console port. See the Cisco 2600 Series Cabling
and Setup Quick Start Guide for information on connecting the console cable.
To enter the ROM monitor mode, do the following:
Configure
Verify
To verify that you are in the ROM monitor mode, check that the prompt displayed on your screen is the
ROM monitor mode prompt:
rommon # >
The # is the line number and increases incrementally at each prompt.
Command or Action Purpose
Step 1
2600> reload
Restart the router.
Step 2
Press the Break key during the first 60
seconds while the system is starting up
Forces the router to stop booting
and enter the ROM monitor mode.