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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The ETHOAM_RMT_SD is an alarm indicating the remote performance degradation of the point-to-point Ethernet OAM function. When the alarm is reported, a port with the OAM function enabled receives a link event message from the opposite end, indicating that the Ethernet performance is degraded at the remote end.


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 port number.

Parameter 2, Parameter 3

Parameter 2 is always 0x00, and Parameter 3 is always 0x01. These parameters are meaningless.

Parameter 4

Indicates the event type.

  • 0x01: errored frame event
  • 0x02: errored frame period event
  • 0x03: errored frame second event

Impact on the System

The alarm is generated when the system runs the IEEE 802.3ah protocol. IEEE 802.3ah is a link management protocol and is irrelevant to services. When the alarm is reported, the number of errored frames crosses the threshold at the receive direction of the local port. The service performance is degraded.

Possible Causes

The possible causes of the ETHOAM_RMT_SD alarm are as follows:

  • The port with the OAM protocol enabled receives the link event message from the opposite end.


  1. Improve the link performance at the opposite end so that the opposite end does not send a link event message to the local end any longer. Then, the ETHOAM_RMT_SD alarm at the local end is cleared automatically.
  2. Modify the value of the link performance monitoring threshold at the opposite end. Then, the ETHOAM_RMT_SD alarm at the local end is cleared.
  3. Disable the link event function at the opposite end. Then, the ETHOAM_RMT_SD alarm at the local end is cleared.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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