ALM-13049866 The link is disconnected

IFNET/1/IF_LINKDOWN: OID [OID] Interface [interface-index] turned into DOWN state.(AdminStatus=[INTEGER],OperStatus=[INTEGER],InterfaceName=[OCTET])

The status of the link protocol on the interface became Down.

Alarm ID	Alarm Severity	Alarm Type
13049866	Critical	equipmentAlarm

Name	Meaning
OID	Indicates the MIB object ID of the alarm.
interface-index	Indicates the interface index.
AdminStatus	Indicates the admin status, which means whether the interface has been disabled. 1: undo shutdown 2: shutdown
OperStatus	Indicates the operating status, which means the link layer protocol status of the interface. 1: Up 2: Down
InterfaceName	Indicates the interface name.

The interface cannot forward packets normally.

Cause 1:

The interface became Down and the link was disconnected.

Cause 2:

The VLANIF interface is deleted.

If the VLANIF interface is deleted, this trap message is informational only. No action is required, go to Step 7.
Run the display this command in the interface view to check whether interfaces on both ends are shut down.
- If so, go to Step 3.
- If not, go to Step 4.
Run the undo shutdown command in the interface view to check whether the alarm is cleared.
- If so, go to Step 7.
- If not, go to Step 4.
Check whether the cable and optical module are loosened or dropped.
- If so, go to Step 6.
- If not, go to Step 5.
Connect the physical link correctly and then check whether the alarm is cleared.
- If so, go to Step 7.
- If not, go to Step 6.
Collect alarm information and configuration information, and then contact technical support personnel.
End.