No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

Rate and give feedback:
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).
MPLS_PW_UNKNOWN

MPLS_PW_UNKNOWN

Description

The MPLS_PW_UNKNOWN alarm indicates that certain unknown defects exist on a PW. This alarm is reported when the types or the cycles of the CC packets received within a certain period (three times of the cycle) are not the expected types or cycles.

Attribute

Alarm Severity Alarm Type

Major

Communication alarm

Parameters

None.

Impact on the System

The PW OAM function is affected.

Possible Causes

Possible causes of the MPLS_PW_UNKNOWN alarm are as follows:

  • The OAM attributes set at both ends are inconsistent.
  • The NE receives packets from unknown sources.

Procedure

  1. On the U2000, check whether the MPLS_PW_LOCV alarm is reported after the MPLS_PW_UNKNOWN alarm is transiently reported.
    If... Then...

    The MPLS_PW_LOCV alarm is reported after the MPLS_PW_UNKNOWN alarm is transiently reported

    Check whether PW OAM attributes are switched between the NEs at the local and opposite ends. Reconfigure the PW OAM attributes at both ends to make them consistent, and check whether the MPLS_PW_UNKNOWN alarm is cleared. If the MPLS_PW_UNKNOWN alarm persists, go to the next step.

    NOTE:
    PW attributes include the type and cycle of CC packets.

    The MPLS_PW_LOCV alarm is not reported after the MPLS_PW_UNKNOWN alarm is transiently reported

    Go to the next step.

  2. Check whether any services are configured between the local NE and another unknown source or whether an incorrect fiber connection results in connection between the local NE and another unknown source.
    If... Then...

    Services are configured between the local NE and another unknown source

    Modify the service configuration, and then check whether the alarm is cleared. If the alarm persists, go to the next step.

    An incorrect fiber connection results in connection between the local NE and another unknown source

    Reconnect the fiber, and check whether the alarm is cleared. If the alarm persists, go to the next step.

    Neither of the above issues occurs

    Go to the next step.

  3. If the alarm persists, contact Huawei technical support engineers to handle the alarm.

Related Information

None.

Translation
Download
Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 76594

Downloads: 138

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next