To test an interface itself or This section describes how to use the web UI to configure a security zone.
To test an Ethernet interface itself, you can run the loopback command in the Ethernet interface view. When the interface works normally, you must disable the loopback function.
The loopback of Ethernet interfaces is generally used to test the interfaces. Run the following command in the Ethernet interface view.
When interfaces work normally, disable the loopback.
Run the loopback command in the Ethernet interface view to enable the loopback on interfaces.