If it is necessary to revert or rollback to a previous configuration this can be done using the 'rollback' command from CLI.
You need to revert to a previous configuration file.
You can revert or rollback to a previous configuration file using the 'rollback' command from either the CLI or J-Web interface. This procedure is from the CLI only.
NOTE: For J-Web you can access the 'rollback' function under the 'maintain > Config Managment > History' menus.
Loading a Previous Configuration File (CLI Procedure)
You can return to a previously committed configuration file if you need to revert to a previous configuration or if you have lost management access to the switch. The EX-series switch saves the last 50 committed configurations, including the rollback number, date, time, and name of the user who issued the commit configuration command.
Syntax rollback (number)
None — Return to the most recently saved configuration.
Number — Configuration to return to.
Range: 0 through 49. The most recently saved configuration is number 0, and the oldest saved configuration is number 49.
To return to a configuration prior to the most recently committed one: