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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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MRING_OAM_RDI_W is an alarm indicating a remote defect in the west direction of an MPLS-TP ring. This alarm occurs when a west port on an MPLS-TP ring receives an RDI packet.


Alarm Severity Alarm Type


Equipment alarm


When you view an alarm on the network management system, select the alarm. In the Alarm Details field display the related parameters of the alarm. The alarm parameters are in the following format: Alarm Parameters (hex): parameter1 parameter2...parameterN. For details about each parameter, refer to the following table.

Name Meaning

Parameter 1

Indicates the board ID.

Impact on the System

This alarm triggers APS switching on the MPLS-TP ring.

Possible Causes

A possible cause of the alarm is as follows:

  • Cause: A ring channel is faulty.

    As shown in Figure 4-28, a ring channel between NE2 and NE3 is faulty, and NE2 sends an RDI packet to NE3. After receiving the RDI packet, NE3 reports an MRING_OAM_RDI_W alarm in the west.

    Figure 4-28  MRING_OAM_RDI_W detection


  1. Cause: A ring channel is faulty.
    1. Check whether physical components are normal, such as fibers, boards, and optical modules. If any physical component is faulty, replace the faulty component. For details, see the Maintenance Guide.
    2. Check whether the NEs at the two ends of the ring channel are normal. For example, check whether an NE reset occurs. If a fault occurs, rectify the fault.
    3. Check the link bandwidth utilization and check whether the FLOW_OVER alarm is reported on the NMS. If the FLOW_OVER alarm is reported, handle the FLOW_OVER alarm with reference to FLOW_OVER.
    4. Check whether the alarm is cleared. If the alarm persists, contact Huawei technical support engineers to handle the alarm.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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