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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).
PTP_SOURCE_SWITCH

PTP_SOURCE_SWITCH

Description

The PTP_SOURCE_SWITCH is an alarm indicating that the PTP clock source is switched. This alarm is reported when the NE switches from the Grandmaster time source or time port to another time source or time port.

Attribute

Alarm Severity Alarm Type

Minor

Equipment 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

Indicate the slot IDs of the board before the switching.

Parameter 3

The value is always 0xff.

Parameter 4, Parameter 5

Indicate the ID of the port before the switching.

Parameters 6, Parameter 7, Parameter 8, Parameter 9

Indicate the Grandmaster time source ID1 before the switching.

Parameters 10, Parameter 11, Parameter 12, Parameter 13

Indicate the Grandmaster time source ID2 before the switching.

Parameter 14, Parameter 15

Indicate the slot ID of the board after the switching.

Parameter 16

The value is always 0xff.

Parameter 17, Parameter 18

Indicate the ID of the port after the switching.

Parameters 19, Parameter 20, Parameter 21, Parameter 22

Indicate the Grandmaster time source ID1 after the switching.

Parameters 23, Parameter 24, Parameter 25, Parameter 26

Indicate the Grandmaster time source ID2 after the switching.

Impact on the System

When this alarm occurs, the PTP clock source of the NE is switched so that the PTP clock of the entire network is switched.

Possible Causes

The possible causes of the PTP_SOURCE_SWITCH alarm are as follows:

  • Cause 1: A fault occurs on the physical link tracing the Grandmaster clock source.
  • Cause 2: Information about the Grandmaster clock source, such as the priority and quality level, has changed.
  • Cause 3: The network topology has changed.
NOTE:

The PTP_SOURCE_SWITCH alarm is used to prompt you that the PTP clock source is switched and will disappear with 5 seconds. You must handle it only when the PTP_SOURCE_SWITCH alarm is reported frequently indicating that the PTP clock source is switched frequently.

Procedure

  1. Cause 1: A fault occurs on the physical link tracing the Grandmaster clock source.
    1. On the NMS, check whether the ETH_LOS alarm occurs at the port whose PTP clock source is traced. If this alarm occurs, clear it first.
    2. Check whether the alarm is reported frequently. If yes, go to 2.
  2. Cause 2: Information about the Grandmaster clock source, such as the priority and quality level, has changed.
    1. Check whether the priority and quality level of the Grandmaster clock source has changed. If the Grandmaster clock source is faulty, switch the Grandmaster clock source to another one.
    2. Check whether the alarm is reported frequently. If yes, go to 3.
  3. Cause 3: The network topology has changed.
    1. Check whether the network topology is changed. If yes, maintain the latest network topology.
    2. Then, check whether alarm is reported frequently. If yes, contact Huawei technical support engineers to handle the alarm.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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