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Cisco ONS 15530 Configuration Guide and Command Reference
78-16019-02, Cisco IOS Release 12.2(18)SV2
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:
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
Step 1
Switch(config)# config-register 0x2102 Sets the configuration register for autoboot.
1
Step 2
Switch(config)# boot system
bootflash:filename
Sets the BOOT environment variable. This variable
specifies the location and name of the system image
file to use when automatically booting the system.
Step 3
Switch(config)# end
Switch#
Returns to privileged EXEC mode.
Step 4
Switch# copy system:running-config
nvram:startup-config
Saves the configuration to NVRAM. The new
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.
Command Purpose
show version Displays the configuration register value.
show bootvar Displays the configuration register value.
