Synchronizing The Supervisor Engine Configurations - Cisco 6500 Series Software Configuration Manual

Chapter 4 Configuring EHSA Supervisor Engine Redundancy
•
EHSA does not support booting from the network.
Note
If these requirements are met, the switch functions in EHSA mode by default.

Synchronizing the Supervisor Engine Configurations

During normal operation, the startup-config and config-registers configuration are synchronized by
default between the two supervisor engines. In a switchover, the new active supervisor engine uses the
current configuration.
The boot variables are not synchronized by default.
Note
To manually synchronize the configurations used by the two supervisor engines, perform this task on the
active supervisor engine:
Command
Step 1
Router(config)# redundancy
Step 2
Router(config-r)# main-cpu
Step 3
Router(config-r-mc)# auto-sync {startup-config |
config-register | bootvar | standard}
Step 4
Router(config-r-mc)# end
Step 5
Router# copy running-config startup-config
Note The auto-sync standard command does not synchronize the boot variables.
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 redundant supervisor engine:
Router(config)# redundancy
Router(config-r)# main-cpu
Router(config-r-mc)# auto-sync standard
Router(config-r-mc)# auto-sync bootvar
78-14099-04
If the redundant supervisor engine is running Catalyst operating system software, remove
Note
the active supervisor engine and boot the switch with only the redundant supervisor engine
installed. Follow the procedures in the release notes to convert the redundant supervisor
engine from Catalyst operating system software.
The configuration register in the startup-config must be set to autoboot (see the
Field" section on page 3-23).
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
Supervisor Engine Redundant Operation
Purpose
Enters redundancy configuration mode.
Enters main-cpu configuration submode.
Synchronizes the configuration elements.
Returns to privileged EXEC mode.
Forces a manual synchronization of the configuration
files in NVRAM.
Note This step is not required to synchronize the
running configuration file in DRAM.
"Modifying the Boot
4-3