# Device configure loopback

# Demo Config Manager UI

Using the Demo Config Manager:

1. On the FRINX Machine main page, select Explore & configure devices.
2. Make sure that the device you want to configure is installed. If not, select Install first.
3. For this demo, we use the IOS01 device. Locate the device in the list and select the corresponding gear icon on the right. (If you see a message saying Transaction expired, select Refresh).

4. For the Loopback0 interface, change the enabled status to false.
5. Select Save to save your changes.
6. To review your changes, select Calculate diff.
7. To view the set of commands used for the change, select Dry run.
8. To apply changes to the device, select Commit to network. You can also see the changes in the Operational data store.

To revert changes made to the device configuration:

9. Select Transactions.
10. Select the Revert icon for your transaction.
11. Select Revert changes.