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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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ETH_CFM_UNEXPERI

ETH_CFM_UNEXPERI

Description

The ETH_CFM_UNEXPERI alarm indicates an incorrect frame. This alarm is generated when the system receives an invalid continuity check message (CCM).

Attribute

Alarm Severity Alarm Type
Minor Communication alarm

Parameters

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, Parameter 2, Parameter 3, Parameter 4 (Port)

Indicates the ID of the Ethernet port where the ETH_CFM_UNEXPERI alarm is reported.

Parameter 5, Parameter 6 (VLAN ID) Indicates the VLAN ID of the MP.
Parameter 7 (Direction) Indicates the direction of the MP.
  • 0x00: The port is direction insensitive.
  • 0x01: The port is in the ingress direction.
  • 0x02: The port is in the egress direction.
Parameter 8 (Level)
Indicates the level of the maintenance domain (MD).
  • 0x00: Operator MP level (low)
  • 0x01: Operator MP level (middle)
  • 0x02: Operator MP level (high)
  • 0x03: Provider MP level (low)
  • 0x04: Provider MP level (high)
  • 0x05: Consumer MP level (low)
  • 0x06: Consumer MP level (middle)
  • 0x07: Consumer MP level (high)
NOTE:

Consumer indicates the user, Provider indicates the supplier, and Operator indicates the carrier.

Impact on the System

  • The loopback (LB) and link trace (LT) functions defined in IEEE 802.1ag ETH-OAM are unavailable.
  • The services may be abnormal due to loops.

Possible Causes

Possible causes of this alarm are as follows:

  • No maintenance end point (MEP) is configured at the opposite end.
  • The continuity check periods of the standard MPs at the two ends are not the same.
  • A loop occurs in the services.
  • A software fault occurs on the MEP in the transmit unit.

Procedure

  1. Check whether an MEP is configured at the opposite end. If no MEP is configured at the opposite end, configure it.
  2. Check whether the continuity check periods of the standard MPs at the two ends are the same.
    If... Then...
    The continuity check periods of the standard MPs at the two ends are not the same Ensure that the continuity check periods of the standard MPs at the two ends are the same. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.
    The continuity check periods of the standard MPs at the two ends are the same Go to the next step.
  3. Enable the loop detection function of the P2P OAM to check whether a loop occurs in the services. If a loop occurs in the services, release the loop.
  4. Perform a warm reset on the Ethernet board where the MEP at the opposite end is located.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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