Discard configuration changes — discard
An example that shows how to use the discard command to discard changes that you made to the candidate configuration in your current session.
Rather than delete many specific changes, you can abandon all changes that you made within a configuration session. You can do this with the discard command, or with the exit command plus the discard option.
The discard command gives the same result as if you delete all of the changes that you've made in your current configuration session.
For example, here we have a candidate configuration in which you added non-mandatory address and description nodes.
user@system# show interfaces dataplane dp0p1p1
+address 192.0.2.21/24
+description "This is a test"
hw-id 00:13:46:e6:f6:87
[edit]
user@system#You can discard all such changes with a single discard command.