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A rescue configuration is the known working configuration. If the active configuration is corrupted, the device automatically loads the rescue configuration file as the active configuration.
Creating and Returning to a Rescue Configuration
A rescue configuration allows you to define a known working configuration or a configuration with a known state for recovery, if necessary. This alleviates the necessity of having to remember the rollback number with the rollback command. The rescue configuration rolls back the device to a known configuration, or can serve as a last resort if your device configuration and the backup configuration files become damaged beyond repair.
To save the most recently committed configuration as the rescue configuration so that you can return to it at any time, issue the request system configuration rescue save command:
To return to the rescue configuration, use the rollback rescue configuration mode command. To commit the rescue configuration, thereby activating it, use the commit command.
If the rescue configuration does not exist, or if the rescue configuration is not a complete, viable configuration, then the rollback command fails, an error message appears, and the current configuration remains active.
To delete an existing rescue configuration, issue the request system configuration rescue delete command: