Cisco ASR 9000 Series Configuration Manual page 11

Aggregation services router

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ROM Monitor Overview

This chapter provides an overview of ROM Monitor concepts and operations. For instructions on how to

perform various tasks in ROM Monitor (ROMMON) mode, see the other chapters in this book.

This chapter includes these main topics:

•

Information About ROM Monitor

The ROM Monitor is a bootstrap program that initializes the ASR 9000 hardware and boots the Cisco IOS

XR software when you power on or reload a router. A version of the ROM Monitor software exists on each

card and is factory supplied. The ROM Monitor program provides an initial power-on environment for each

card. If the Cisco IOS XR software is rebooted or unable to run, the corresponding card returns to the ROM

Monitor mode.

When you connect a terminal to a card that is in the ROM Monitor mode, the ROM Monitor CLI prompt is

displayed.

Cisco ASR 9000 Series Router Prompt

rommon B1>

OL-30420-01

Information About ROM Monitor, page 3

Entering ROM Monitor Mode, page 5

ROM Monitor Commands, page 9

Displaying the Configuration Register Setting, page 12

Environment Variables, page 12

Viewing Chassis Serial Numbers, page 15

Exiting ROM Monitor Mode, page 16

Attaching to Primary RSP from Standby RSP, page 18

Additional References, page 19

Cisco ASR 9000 Series Aggregation Services Router ROM Monitor Configuration Guide, Release 5.1.x

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