EFM/5/LOOPBACKFAILEDEVENT

Message

EFM/5/LOOPBACKFAILEDEVENT: Interface starts loopback failed. (IfIndex=[IfIndex],IfName=[IfName])

Description

802.3ah loopback failed after no response to an 802.3ah loopback request was received within a specified period of time.

Parameters

Parameter Name	Parameter Meaning
IfIndex	Interface index
IfName	Interface name

Possible Causes

802.3ah loopback failed after no response to an 802.3ah loopback request was received within a specified period of time.

Procedure

1. Check whether the remote interface denies the remote loopback request from the local end.

Run the display current-configuration command. Check whether the efm loopback ignore-request command is used.

If this command is used, the remote interface denies the request. Run the undo efm loopback ignore-request command to enable the remote interface to receive the remote loopback request. Then go to Step 2.
If this command is not used, the remote interface is able to receive the request. Then go to Step 3.

2.Then check whether the alarm is cleared.

If the alarm persists, go to Step 3.

3.Check the EFM status.

Run the display efm session all command. Check whether the value of the EFM State field is detect.

If the value of the EFM State field is detect, go to Step 5.
If the value of the EFM State field is not detect, go to Step 4.

4.Check the physical link. If the physical link is faulty, see Physical Interconnection Troubleshooting for details about how to troubleshoot the link fault.

5.Collect the alarm information, log information, and configuration information, and then contact technical support personnel.