MSTP_1.3.6.1.4.1.2011.5.25.42.4.2.34 hwMstpProRcvTcFlap

Trap Buffer Description

The local device received many TC BPDUs from neighbors. (ProcessID=[process-id], InstanceID=[instance-id], PortName=[port-name], PwName=[pw-name], SMAC=[src-mac])

The local device received many TC BPDUs from neighbors.

Trap Attributes

Trap Attribute	Description
Alarm or Event	Event
Trap Severity	Notice
Mnemonic Code	MSTP_PRO_RCVTCFLAP
Trap OID	1.3.6.1.4.1.2011.5.25.42.4.2.34
MIB	HUAWEI-MSTP-MIB
Alarm ID	This is an event trap and does not involve alarm ID.
Alarm Name	This is an event trap and does not involve alarm name.
Alarm Type	This is an event trap and does not involve alarm type.
Raise or Clear	This is an event trap and does not involve alarm generation or clearance.
Match trap	-

Trap Buffer Parameters

Parameter	Description
process-id	Process ID.
instance-id	MSTP instance ID.
port-name	Port name.
pw-name	PW name.
src-mac	Source MAC address.
if-index	Interface index.

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
1.3.6.1.2.1.31.1.1.1.1	ifName	ifIndex
1.3.6.1.4.1.2011.5.25.42.4.1.33	hwMstpPwName	-
1.3.6.1.4.1.2011.5.25.42.4.1.37	hwMstpSrcMacAddress	-

Impact on the System

STP topology flapping occurs.

Possible Causes

The local device received many TC BPDUs from neighbors.

Procedure

1. Check the STP port state of the neighbour is flapping, check hwMstpiPortStateForwarding and hwMstpiPortStateDiscarding alarms are in alarm history.

If the operation is proper, go to Step 2.
If the operation is not proper, check the neighbours' stp state, and neighbours of neighbours stp port state by check hwMstpiPortStateForwarding or hwMstpiPortStateDiscarding alarms are in alarm history, find which device's stp is flapping, go to Step 2.

2. Run the command display this interface to check STP ports went Up or Down frequently.

If the operation is proper, check the network links state.
If the operation is not proper, go to Step 3.

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