Cisco ACE-4710-K9 Administration Guide - Page 401

Configuring the Configuration Register to Autoboot the Boot, Variable

Page 401 highlights

Chapter A Upgrading Your ACE Software Configuring the ACE to Autoboot the Software Image Configuring the Configuration Register to Autoboot the Boot Variable To configure the ACE to autoboot the system image identified in the boot environment variable, use the config-register command in the Admin context from the configuration mode and set the configuration register to 0x1. A config-register setting of 0x1 instructs the ACE to boot the system image identified in the BOOT environment variable and to load the startup-configuration file stored in Flash memory. The BOOT environment variable is identified through the boot system command to specify a list of image files on various devices from which the ACE can boot at startup (refer to Chapter 1, Setting Up the ACE). If the ACE encounters an error or if the image is not valid, it will try the second image (if one is specified). Upon startup, the ACE loads the startup-configuration file stored in Flash memory (nonvolatile memory) to the running-configuration file stored in RAM (volatile memory). For details about the different settings of the config-register command, refer to Chapter 1, Setting Up the ACE. For example, to set the register to 0x1 to boot the system image, enter: host1/Admin(config)# config-register 0x1 OL-11157-01 Cisco 4700 Series Application Control Engine Appliance Administration Guide A-9

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A-9
Cisco 4700 Series Application Control Engine Appliance Administration Guide
OL-11157-01
Chapter A
Upgrading Your ACE Software
Configuring the ACE to Autoboot the Software Image
Configuring the Configuration Register to Autoboot the Boot
Variable
To configure the ACE to autoboot the system image identified in the boot
environment variable, use the
config-register
command in the Admin context
from the configuration mode and set the configuration register to 0x1.
A
config-register
setting of
0x1
instructs the ACE to boot the system image
identified in the BOOT environment variable and to load the startup-configuration
file stored in Flash memory. The BOOT environment variable is identified
through the
boot system
command to specify a list of image files on various
devices from which the ACE can boot at startup (refer to
Chapter 1, Setting Up
the ACE
).
If the ACE encounters an error or if the image is not valid, it will try the second
image (if one is specified). Upon startup, the ACE loads the startup-configuration
file stored in Flash memory (nonvolatile memory) to the running-configuration
file stored in RAM (volatile memory).
For details about the different settings of the
config-register
command, refer to
Chapter 1, Setting Up the ACE
.
For example, to set the register to 0x1 to boot the system image, enter:
host1/Admin(config)#
config-register 0x1