302 | Configuration Replace and Rollbackw w w . d e l l . c o m | s u p p o r t . d e l l . c o mConfiguring Configuration Replace and RollbackConfiguring Configuration Replace and Rollback is a three-step process:1. Enable the archive service. See page 302.2. Archive a running-configuration. See page 303.3. Replace the running-configuration with an archived configuration. See page 303.Related Configuration Tasks• Configuring an Archive File Maximum on page 305• Configuring Auto-archive on page 306• Copying and Deleting an Archive File on page 307• Viewing and Editing the Contents of an Archive File on page 307Important Points to Remember• FTOS automatically locks CONFIGURATON mode during the replace and rollback operation; seeLock CONFIGURATION mode on page 72. Therefore, when using this feature, no other user may bein CONFIGURATION mode. The lock is released when the replace or rollback operation is complete.• Configuration Replace and Rollback cannot remove some FTOS configuration statements. See therelease notes for your FTOS version for details.Enabling the Archive ServiceBefore you can archive a configuration, you must enter ARCHIVE mode using the command archive fromCONFIGURATION mode, as shown in Figure 12-1. This enables the archiving service. If you do notenable the archive service, Message 1 appears when you attempt to archive a configuration.Figure 12-1. Entering Archive ModeMessage 1 Archive Service Error Message% Warning: archive service is not enabled yet.FTOS#archive config% Warning: archive service is not enabled yet.FTOS#configFTOS(conf)#archiveFTOS(conf-archive)#exitFTOS(conf)#exitFTOS#archive configconfiguration archived as archive_1FTOS#