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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
LAG_PORT_FAIL

LAG_PORT_FAIL

Description

The LAG_PORT_FAIL is an alarm indicating that a port in the LAG fails. When a port in the LAG is unavailable, the LAG_PORT_FAIL alarm is reported.

Attribute

Alarm Severity Alarm Type

Minor

Processing 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

Indicates the IP port number.

Parameter 2, Parameter 3

The value is always 0x01.

Parameter 4

Indicates the cause of the protection failure.

  • 0x01: The port is disabled or link down occurs on the port.
  • 0x02: The port works in half-duplex mode.
  • 0x03: The port fails to receive the LACP packets.
  • 0x04: The port is self-looped.
  • 0x05: Other unknown reasons.

Parameter 5

The value is always 0xff, and this parameter is meaningless.

Impact on the System

The port in the LAG cannot balance the service load, and the port does not transmit or receive any services.

Possible Causes

The possible causes of the LAG_PORT_FAIL alarm are as follows:

  • The port is not enabled.

  • The link of the port is faulty.

  • The port is in half-duplex mode.

  • The port fails to receive the LCAP packets.

  • A self-loop is detected at the port.

  • Other unknown reasons.

Procedure

  1. View the alarm on the U2000, and confirm the board where the LAG_PORT_FAIL alarm is generated. Confirm the number of the MAC port where the LAG_PORT_FAIL alarm is generated according to Parameter 1, and confirm the cause of the LAG_PORT_FAIL alarm at the port according to Parameter 4.
  2. If the value of Parameter 4 is 0x01, the link fails or is faulty.
    1. On the U2000, check whether the port in the LAG is enabled. If the port is not enabled, enable the port and then check whether the alarm is cleared.
    2. Check the status of each port. Then, rectify the link fault of each port to check whether the alarm is cleared.
  3. If the value of Parameter 4 is 0x02, check the working mode of the port in the LAG on the U2000. If the port is in half-duplex mode, change the working mode of the port to full-duplex, and then check whether the alarm is cleared automatically.
  4. If the value of Parameter 4 is 0x03, the port fails to receive the LACP packets.
    1. On the U2000, check whether the LAG is configured at the opposite end, and check whether the port connected to the faulty port is added to the LAG at the opposite end. Make sure that the LAG is correctly configured, and then check whether the alarm is cleared.
    2. Check whether the local port transmits packets. If both ends can normally transmit and receive packets, check whether the alarm is cleared.
  5. If the value of Parameter 4 is 0x04, the port is in the self-loop state. Release the self-loop, and then check whether the alarm is cleared.
  6. If the value of Parameter 4 is 0x05, determine the cause according to the networking environment, and then check whether the alarm is cleared.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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