Remote loopback [EFM]

If remote loopback is left enabled, the remote device keeps looping back service data, causing a service interruption. To prevent this problem, a capability can be configured to disable remote loopback automatically after a specified timeout interval. After the timeout interval expires, the local device automatically sends a message to instruct the remote device to disable remote loopback.

Configuring EFM remote loopback is used as an example.

Step 1 Enable EFM globally.
<Quidway> system-view
[Quidway] efm enable

Step 2 Enable EFM on an interface.
[Quidway] interface gigabitethernet 1/0/1
[Quidway-GigabitEthernet1/0/1] efm enable

Step 3 Configure EFM remote loopback.
[Quidway-GigabitEthernet1/0/1] efm loopback start
[Quidway-GigabitEthernet1/0/1] quit

Step 4 Configure the device to send test packets to the peer device.
[Quidway] test-packet start interface gigabitethernet 1/0/1 

please waiting.. 

Info: The test is complete.

Step 5 Check returned test packets.
[Quidway] display test-packet result
TestResult Value
--------------------------------------------------------
PacketsSend : 5
PacketsReceive : 5
PacketsLost : 0
BytesSend : 480
BytesReceive : 480
BytesLost : 0
StartTime : 03-09-2014 14:28:16 UTC+04:00
EndTime : 03-09-2014 14:29:22 UTC+04:00

Step 6 Disable EFM remote loopback.
[Quidway] interface gigabitethernet 1/0/1
[Quidway-GigabitEthernet1/0/1] efm loopback stop
[Quidway-GigabitEthernet1/0/1] quit