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• Preserves all commands present in both the replacement configuration file and the running
configuration.
• Removes commands from the running configuration that are not present in the replacement
configuration file.
• Applies the commands from the replacement configuration file that are not present in the running
configuration.
• Applies the commands from the replacement configuration file that have different configurations in
the running configuration.
NOTE:
The running configuration is only saved to the master, and only the configuration on the master can be
rolled back. However, the related configuration will be synchronized to the slave switches to ensure the
rollback of the configuration after the master is changed.
Configuration task list
Complete these tasks to configure the configuration rollback:
Task Remarks
Configuring parameters for saving the running
configuration
Required
Enabling automatic saving of the running configuration
Required
Use either approach
Manually saving the running configuration
Setting configuration rollback Required
Configuring parameters for saving the running configuration
Before the running configuration is saved manually or automatically, the file path and filename prefix
must be configured. After that, the system saves the running configuration with the specified filename
(filename prefix_serial number.cfg) to the specified path. The filename of a saved configuration file is like
20080620archive_1.cfg, or 20080620archive_2.cfg. The saved configuration files are numbered
automatically, from 1 to 1,000 (with an increment of 1). If the serial number reaches 1,000, it restarts from
1. If you change the path or filename prefix, or reboot the device, the saved file serial number restarts
from 1, and the system recounts the saved configuration files. If you change the path of the saved
configuration files, the files in the original path become common configuration files, and are not
processed as saved configuration files, and are not displayed when you view saved configuration files.
The number of saved configuration files has an upper limit. After the maximum number of files is saved,
the system deletes the oldest files when the next configuration file is saved.
Follow these steps to configure parameters for saving the running configuration:
To do… Use the command…
Remarks
Enter system view system-view —
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