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Software Configuration Guide—Release 12.2(25)SG
OL-7659-03
Chapter6 Configuring Supervisor Engine Red undancy Using RPR and SSO
Performing a Software Upgrade
To perform a software upgrade, perform this task:
Command Purpose
Step1 Switch# copy
source_device
:
source_filename
slot0:
target_filename
Or:
Switch# copy
source_device
:
source_filename
bootflash:
target_filename
Copies the new Cisco IOS software image to bootflash on
both supervisor engines.
Step2 Switch# copy
source_device
:
source_filename
slaveslot0:
target_filename
Or:
Switch# copy
source_device
:
source_filename
slavebootflash:
target_filename
Copies the new image to a slave device (such as
slavebootflash and slaveslot0).
Step3 Switch# config terminal
Switch(config)# config-register 0x2
Switch(config)# boot system flash
device
:
file_name
Configures the supervisor engines to boot the new image.
If your system was configured to autoboot an earlier
image, issue the following command string to boot the
new image instead:
no boot system flash device:old_file_name
Step4 Switch(config)# redundancy Enters redundancy configuration mode.
Step5 Switch(config-red)# main-cpu Enters main-cpu configuration submode.
Step6 Switch(config-r-mc)# auto-syn standard Synchronizes the configuration elements.
Step7 Switch(config-r-mc)# end Returns to privileged EXEC mode.
Step8 Switch# copy running-config start-config Saves the configuration.
Step9 Switch# redundancy reload peer Reloads the redundant supervisor engine and brings it
back online (using the new release of the Cisco IOS
software).
Note Before proceeding to Step 10, ensure that the switch
is operating in RPR mode.
Step10 Switch# redundancy force-switchover Conducts a manual switchover to the redundant
supervisor engine. The redundant supervisor engine
becomes the new active supervisor engine using the new
Cisco IOS software image.
The old active supervisor engine reboots with the new
image and becomes the redundant supervisor engine.