Chapter 3 Initial Configuration

Configuring CPU Switch Module Redundancy

Configuring Autoboot

If you have changed the default configuration register value from autoboot, you can change it back by performing the following steps, beginning in global configuration mode:

 

Command

Purpose

 

 

 

Step 1

Switch(config)# config-register 0x2102

Sets the configuration register for autoboot.1

Step 2

Switch(config)# boot system

Sets the BOOT environment variable. This variable

 

bootflash:filename

specifies the location and name of the system image

 

 

file to use when automatically booting the system.

Step 3

 

 

Switch(config)# end

Returns to privileged EXEC mode.

 

Switch#

 

Step 4

 

 

Switch# copy system:running-config

Saves the configuration to NVRAM. The new

 

nvram:startup-config

configuration register value takes effect after the next

 

 

system reload.

 

 

 

1.This is the default configuration register setting. For details on using the configuration register to set boot parameters, refer to the Cisco IOS Configuration Fundamentals Configuration Guide.

Note If the standby CPU switch module remains in ROM monitor mode, you can manually boot the CPU switch module using a system image either on the bootflash or on a Flash PC Card.

Example

The following example shows how to configure the Cisco ONS 15530 to autoboot using the first valid file on the Flash PC Card in slot 0:

Switch(config)# config-register 0x2102

Switch(config)# boot system flash slot0:

Switch(config)# end

Switch# copy system:running-config nvram:startup-config

Displaying the Autoboot Configuration

To display the configuration register value, use the following EXEC command:

Command

Purpose

 

 

show version

Displays the configuration register value.

 

 

show bootvar

Displays the configuration register value.

 

 

 

 

Cisco ONS 15530 Configuration Guide and Command Reference

 

 

 

 

 

 

78-16019-02, Cisco IOS Release 12.2(18)SV2

 

 

3-17

 

 

 

 

 

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Cisco Systems 78-16019-02 manual Configuring Autoboot, Displaying the Autoboot Configuration, Switchconfig# config-register