Installation guide

auto-sync
GRP Redundant Processor Support 19
auto-sync
Use the auto-sync main-CPU redundancy configuration command to define whether the
startup-config, boot variables, and config-register on the secondary GRP will be synchronized to the
values currently stored on the primary GRP. Use the no form of the command to negate an auto-sync
selection.
auto-sync startup-config
no auto-sync
Syntax Description
Default
Auto-sync is performed.
Command Mode
Main-CPU redundancy
Usage Guidelines
This command first appeared in Cisco IOS Release 11.2 GS.
Two GRP cards must be installed in the router for this command to take effect.
All synchronizations move from the primary GRP to the secondary GRP.
An auto-sync between the primary GRP and the secondary GRP happens when the command is
entered. There is a momentary pause at the terminal console while the synchronization occurs.
Whenever the primary GRP startup-config changes, a copy is sent to the secondary startup-config.
The secondary startup-config is also synchronized when the secondary first boots.
The config-register and boot variables on the secondary are also synchronized to values specified in
the startup-config. You can use hw-module global configuration commands to specify different boot
images and config-register settings on the primary and the secondary.
Example
The following example configures synchronization between the primary and secondary GRP:
router(config)# redundancy
router(config-r)# main-cpu
router(config-r-mc)# auto-sync startup-config
Related Commands
main-cpu
redundancy
startup-config Update the secondary GRP startup configuration whenever the primary
GRP configuration changes.