Cisco Systems 78-16019-02 manual Enabling and Disabling Automatic Synchronization

Chapter 3 Initial Configuration

Configuring CPU Switch Module Redundancy

Example

The following example shows how to manually synchronize the running configuration:

Switch# redundancy manual-sync running-config

Enabling and Disabling Automatic Synchronization

You can enable and disable automatic synchronization of the running configuration and the startup configuration between the two CPU switch modules. Automatic synchronization ensures that, when a switchover occurs, the standby CPU switch module has the most recent configuration information.

Note By default, the Cisco ONS 15530 automatically synchronizes the running configuration and the startup configuration between the two CPU switch modules.

Table 3-3lists the events that cause the automatic synchronization of the configuration files.

Table 3-3 Synchronization Events for Configuration Files

Filename	When Synchronized
running-config	Upon exiting from global configuration mode in the CLI, or
	within 5 seconds after an SNMP message that changes the
	configuration
startup-config	When a new configuration is copied to NVRAM on the active
	CPU switch module

To enable or disable the system to automatically synchronize the configurations on both CPU switch modules, perform the following steps on the active CPU switch module, beginning in global configuration mode:

	Command	Purpose
Step 1
	Switch(config)# redundancy	Enters redundancy configuration mode.
	Switch(config-red)#
Step 2
	Switch(config-red)# [no] auto-sync running-config	Enables or disables synchronization of the
		running configuration when it is updated. The
		default state is enabled.
Step 3
	Switch(config-red)# [no] auto-sync startup-config	Enables or disables synchronization of the
		startup configuration when it is updated. The
		default state is enabled.

Example

The following example shows how to disable automatic synchronization of the running configuration:

Switch(config)# redundancy

Switch(config-red)#no auto-sync running-config

Switch(config-red)# end

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

	Cisco ONS 15530 Configuration Guide and Command Reference
78-16019-02, Cisco IOS Release 12.2(18)SV2		3-19