For example, the first time that you disable the EIGRP feature, the system creates the checkpoint named system-fm-_inst_1_eigrp. The system generated checkpoint filenames begin with “system-” and include the feature name. If one of these events causes system configuration changes, the feature software creates a system checkpoint that you can use to roll back to the previous system configuration.
Removing an instance of a Layer 3 protocol, such as with the no router bgp command or the no ip pim sparse-mode command. 
Disabling an enabled feature with the no feature command. System checkpoints are generated by the following events: The Cisco NX-OS software automatically generates system checkpoints to help you avoid a loss of configuration information. Automatically Generated System Checkpoints You need to clean up these changes manually. 
If you cancel the operation, Cisco NX-OS provides a list of changes already applied before the error occurred. If an error occurs during the rollback operation, you can choose to cancel the operation, or ignore the error and proceed with the rollback. When you are ready to roll back to a checkpoint configuration, you can view the changes that will be applied to your current running configuration before committing to the rollback operation.
stop-at-first-failure-Implement a rollback that stops if an error occurs. best-effort-Implement a rollback and skip any errors. atomic-Implement a rollback only if no errors occur. When you roll back the running configuration, you can trigger the following rollback types: You can create multiple checkpoints to save different versions of your running configuration. Cisco NX-OS saves this checkpoint as an ASCII file which you can use to roll back the running configuration to the checkpoint configuration at a future time. You can create a checkpoint copy of the current running configuration at any time. You can use either a user or system checkpoint to perform a rollback. A rollback allows any authorized administrator to apply this checkpoint configuration without requiring expert knowledge of the features configured in the checkpoint.Ĭisco NX-OS automatically creates system checkpoints as described in the “Automatically Generated System Checkpoints” section. The rollback feature allows you to take a snapshot, or user checkpoint, of the Cisco NX-OS configuration and then reapply that configuration to your device at any point without having to reload the device. Automatically Generated System Checkpoints. This section includes the following topics: This chapter includes the following sections: This chapter describes how to configure the Rollback feature on Cisco NX-OS devices.
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