ERROR-DOWN_1.3.6.1.4.1.2011.5.25.257.2.1 hwErrordown

Trap Buffer Description

Error-down occurred. (Ifindex=[IfIndex], Ifname=[IfName], Cause=[Cause])

The alarm was generated when an errordown event occurred.

Trap Attributes

Trap Attribute	Description
Alarm or Event	Alarm
Trap Severity	Warning
Mnemonic Code	hwErrordown
Trap OID	1.3.6.1.4.1.2011.5.25.257.2.1
MIB	HUAWEI-ERRORDOWN-MIB
Alarm ID	0x08520006
Alarm Name	hwErrordown
Alarm Type	communicationsAlarm
Raise or Clear	Raise
Match trap	ERROR-DOWN_1.3.6.1.4.1.2011.5.25.257.2.2 hwErrordownRecovery

Trap Buffer Parameters

Parameter	Description
IfIndex	Index of an interface
IfName	Interface name
Cause	Cause of the errordown event

VB Parameters

VB OID	VB Name	VB Index
1.3.6.1.2.1.31.1.1.1.1	ifName	ifIndex
1.3.6.1.4.1.2011.5.25.257.1.1	hwErrordownCause	-

Impact on the System

The device records the status of an interface as Error-Down when it detects that a fault occurs. The interface in Error-Down state cannot receive or send packets and the interface indicator is off. After an Error-Down event occurs, the interface cannot forward traffic and services are interrupted.

Possible Causes

Cause 1: bpdu-protection: The STP edge interface receives BPDUs.
Cause 2: monitor-link: The uplink link in the Monitor Link group is Down.
Cause 3: auto-defend: The number of packets sent to the CPU for processing reaches the threshold.

Procedure

Cause 1: bpdu-protection: The STP edge interface receives BPDUs.
1. Check whether the interface should be specified as an edge port.
- If not, go to step 2.
- If yes, go to Step 3.
2. Run the undo stp edged-port and undo shutdown commands to remove the edge port configuration. Check whether the log exists. If the alarm persists, go to Step 3.

3. Collect alarm information and contact Huawei technical support personnel.
Cause 2: monitor-link: The uplink link in the Monitor Link group is Down.
1. For how to handle the alarm when the upstream link of the Monitor Link group went Down, see IFNET_1.3.6.1.6.3.1.1.5.3 linkdown.
Cause 3: auto-defend: The number of packets sent to the CPU for processing reaches the threshold.
1. Identify the attack source and prevent the attacks. After the fault is rectified, run the shutdown and undo shutdown commands in the interface view to restore the service interface state.