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Catalyst 6500 Series Switch Command Reference—Release 8.4
OL-6244-01
Chapter 2 Catalyst 6500 Series Switch and ROM Monitor Commands
set system highavailability versioning
set system highavailability versioning
To enable and disable support for supervisor engine image versioning, use the set system
highavailability versioning command.
set system highavailability versioning {enable | disable}
Syntax Description
Defaults The default is disabled.
Command Types Switch command.
Command Modes Privileged.
Usage Guidelines The high-availability versioning feature allows the Catalyst 6500 series switch to run different images
on the active and redundant supervisor engines. When you enable image versioning, Flash image
synchronization (from active to the redundant supervisor engines) does not occur, allowing active and
redundant supervisor engines to run different images.
Caution When you disable image versioning, the active and redundant supervisor engines must run the same
image version.
If you disable the image versioning option from the enabled state, no additional action is necessary on
the redundant supervisor engine. (The redundant supervisor engine should be running the same image
as the active supervisor engine.) If you want to load a different image, you have to restart the redundant
supervisor engine.
If you enable the image versioning option from the disabled state and you have a redundant supervisor
engine and active supervisor engine running a different image than that of the active supervisor engine,
Flash synchronization will copy the active supervisor engine image to the redundant supervisor engine
image and then restart it.
If you enable the image versioning option on the active supervisor engine and the redundant supervisor
engine is running a different image, the NVRAM synchronization cannot occur because the NVRAM
versions are not compatible. If this is the case, after switchover, the old NVRAM configuration on the
supervisor engine is used.
enable Activates system high-availability versioning.
disable Deactivates system high-availability versioning.