Before enabling the service loopback function on an Eth-Trunk, note that only one interface enabled with the service loopback function is needed on a device. The interface must be idle and not transmitting services.
The system view is displayed.
The Eth-Trunk interface view is displayed.
The Eth-Trunk is enabled with the service loopback function.
You cannot configure both the service type tunnel command and the URPF function on the same Eth-Trunk.
On an Eth-Trunk enabled with the service loopback function, the STP function is automatically disabled. After the service loopback function is disabled on the Eth-Trunk, the STP function is automatically enabled.
Return to the system view.
The interface view is displayed.
The interface is added to the Eth-Trunk.