Specifications

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Catalyst 4500 Se ries S wit ch C is co IO S C om mand R efer ence —Re lease I OS XE 3 .3.0 XO(1 5.1 (1)XO)

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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches

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 mod e

Usage Guidelines The main CPU submode is used to manually synchronize the configurations on the two supervisor

engines. From the main CPU sub mode, 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 configurat ion betwee n the primar y and sec ondary rout e processors based on the primary

configuration. In addition, you can us e 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 sup ervisor engine. The updates for the boot variables are a utomatic

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 Command Description

auto-sync Enables auto matic synchronization of th e configuration

files in NVRAM.