PTP_1.3.6.1.4.1.2011.5.25.187.5.11 hwPTPRingFiberLengthChange

Trap Buffer Description

The optical fiber length of the ring-network is changed. (hwPtpPortName=[hwPtpPortName], hwPtpPortIfIndex=[hwPtpPortIfIndex], hwPtpPortRingFiberLengthChangeValue=[hwPtpPortRingFiberLengthChangeValue], hwPtpPortRingFiberLengthChangeValueFlag=[hwPtpPortRingFiberLengthChangeValueFlag])

The length of the optical fiber on the ring network is changed.

In VS mode, this trap is supported only by the admin VS.

Trap Attributes

Trap Attribute	Description
Alarm or Event	Alarm
Trap Severity	Warning
Mnemonic Code	hwPTPRingFiberLengthChange
Trap OID	1.3.6.1.4.1.2011.5.25.187.5.11
MIB	HUAWEI-PTP-MIB
Alarm ID	0x09af000a
Alarm Name	hwPTPRingFiberLengthChange
Alarm Type	equipmentAlarm
Raise or Clear	Raise
Match trap	PTP_1.3.6.1.4.1.2011.5.25.187.5.12 hwPTPRingFiberLengthChangeResume

Trap Buffer Parameters

Parameter	Description
hwPtpPortName	Indicates the name of the current port.
hwPtpPortIfIndex	Interface index
hwPtpPortRingFiberLengthChangeValue	Indicates the new time offset caused by the fiber length change of the current port. The new time offset is the sum of the currently configured fiber asymmetry compensation value. (unit: ns)
hwPtpPortRingFiberLengthChangeValueFlag	Indicates the plus or minus sign of the new time offset caused by the fiber change of the current port. The options are as follows: Negative sign (0) Positive sign (1)

VB Parameters

VB OID	VB Name	VB Index
1.3.6.1.4.1.2011.5.25.187.2.1.1.43	hwPtpPortName	hwPtpPortIfIndex
1.3.6.1.4.1.2011.5.25.187.2.1.1.45	hwPtpPortRingFiberLengthChangeValue	hwPtpPortIfIndex
1.3.6.1.4.1.2011.5.25.187.2.1.1.46	hwPtpPortRingFiberLengthChangeValueFlag	hwPtpPortIfIndex

Impact on the System

The precision of clock synchronization is affected.

Possible Causes

The difference between the time offset caused by the fiber length change and the set asymmetric correction value exceeded the acceptable range (from - 200 ns to + 200 ns).

Procedure

1. Run the display this command in the interface view to check whether the asymmetric correction value is configured on the interface.

If yes, go to Step 2.
If no, go to step 3.

2. Run the ptp asymmetry-correction { positive correction-value | negative correction-value } command to reconfigure the asymmetric correction value. If the alarm persists, go to Step 3.

3. Collect trap, log, and configuration information, and contact Huawei technical support personnel.

4. End.