MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.32 hwMstpProTcFlap

Trap Buffer Description

The local device proactively detected that its STP topology was flapping. (ProcessID=[process-id], InstanceID=[instance-id])

STP topology was flapping in the device.

Trap Attributes

Trap Attribute	Description
Alarm or Event	Alarm
Trap Severity	Critical
Mnemonic Code	hwMstpProTcFlap
Trap OID	1.3.6.1.4.1.2011.5.25.42.4.2.32
MIB	HUAWEI-MSTP-MIB
Alarm ID	0X0D542003
Alarm Name	hwMstpProTcFlap
Alarm Type	communicationsAlarm
Raise or Clear	Raise
Match trap	MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.33 hwMstpProTcFlapResume

Trap Buffer Parameters

Parameter	Description
process-id	MSTP process ID
instance-id	Multiple spanning tree instance (MSTI) ID

VB Parameters

VB OID	VB Name	VB Index
1.3.6.1.4.1.2011.5.25.42.4.1.23.1.1	hwMstpProID	hwMstpProID
1.3.6.1.4.1.2011.5.25.42.4.1.19.1.1	hwMstpInstanceID	hwMstpInstanceID

Impact on the System

May cause business interruptions or flicker.

Possible Causes

The local device proactively detected that its STP topology was flapping 5 times in 30 hellotime interval, then detect topo change again in 60s, trigger alarm.

Procedure

1. Check whether a STP port went Up or Down, the command is display alarm history, check the information the interface status changes.

If the operation is proper, check the network links state, the command is display this interface in interface view.
If the operation is not proper, go to Step 2.

2. Collect alarm and configuration information, and contact technical support personnel.