Cisco 4500M Command Reference

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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2Cisco IOS Commands for the Catalyst 4500 Series Switches
main-cpu
main-cpu
To enter the main CPU submode and manually synchronize the configurations on the two supervisor
engines, use the main-cpu command.
main-cpu
Syntax Description This command has no arguments or keywords.
Defaults This command has no default settings.
Command Modes Redundancy
Command History
Usage Guidelines The main CPU submode is used to manually synchronize the configurations on the two supervisor
engines.
From the main CPU submode, use the auto-sync command to enable automatic synchronization of the
configuration files in NVRAM.
Note After you enter the main CPU submode, you can use the auto-sync command to automatically
synchronize the configuration between the primary and secondary route processors based on the primary
configuration. In addition, you can use all of the redundancy commands that are applicable to the main
CPU.
Examples This example shows how to reenable the default automatic synchronization feature using the auto-sync
standard command to synchronize the startup-config and config-register configuration of the active
supervisor engine with the standby supervisor engine. Updates for the boot variables are automatic and
cannot be disabled.
Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# auto-sync standard
Switch(config-r-mc)# end
Switch# copy running-config startup-config
Switch#
Related Commands auto-sync
Release Modification
12.1(12c)EW Support for this command was introduced on the Catalyst 4500 series switch.
(Catalyst 4507R only)

Cisco 4500M Specifications

General

Brand	Cisco
Model	4500M
Category	Network Router
Language	English