Cisco Catalyst 4500 series Administration Manual page 463

Chapter 11 Configuring Supervisor Engine Redundancy Using RPR and SSO on Supervisor Engine 7-E, Supervisor
Command
Step 1
Switch(config)# redundancy
Step 2
Switch(config-red)# main-cpu
Step 3
Switch(config-r-mc)# auto-sync {startup-config |
config-register | bootvar | standard}
Step 4
Switch(config-r-mc)# end
Step 5
Switch# copy running-config startup-config
Configuration changes made to the active supervisor engine through SNMP are not synchronized to the
Note
redundant supervisor engine. For information on how to handle this situation, see the
Redundancy Guidelines and Restrictions" section on page
The auto-sync command controls the synchronization of the config-reg, bootvar, and startup/private
Note
configuration files only. The calendar and VLAN database files are always synchronized when they
change. In SSO mode, the running-config is always synchronized.
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
To manually synchronize individual elements of the standard auto-sync configuration, disable the default
Note
automatic synchronization feature.
Note When you configure the auto-sync standard, the individual sync options such as no auto-sync
startup-config are ignored.
This example shows how to disable default automatic synchronization and allow only automatic
synchronization of the config-registers of the active supervisor engine to the standby supervisor engine,
while disallowing synchronization of the startup configuration:
Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# no auto-sync standard
Switch(config-r-mc)# auto-sync config-register
Switch(config-r-mc)# end
OL_28731-01
Purpose
Enters redundancy configuration mode.
Enters main-cpu configuration submode.
Synchronizes the configuration elements.
Returns to privileged EXEC mode.
Synchronizes the running configuration in dynamic
random-access memory (DRAM) to the startup
configuration file in NVRAM.
This step is not required to synchronize the
Note
running configuration file in (DRAM).
11-5.
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
Configuring Supervisor Engine Redundancy
"Supervisor Engine
11-11