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).
ETHOAM_VCG_SELF_LOOP

ETHOAM_VCG_SELF_LOOP

Description

The ETHOAM_VCG_SELF_LOOP is an alarm indicating the loopback of the VCTRUNK port that runs the point-to-point OAM protocol. If the VCTRUNK port of a board receives the OAM protocol packets sent by the port or the board after detection of the loop is enabled, the alarm is reported.

Attribute

Alarm Severity Alarm Type

Major

Environment 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

The value is always 0x01.

Parameter 2, Parameter 3

Indicate the VCG port number. Parameter 2 is the higher byte, and Parameter 3 is the lower byte.

Parameter 4

Indicates the loopback reason.

  • 0x01: The port is self-looped.
  • 0x02: The board is self-looped.
  • 0x03 - 0xFF: types for expansion.

Impact on the System

In the case of the ETHOAM_VCG_SELF_LOOP alarm, the link between VCG ports is configured into a loop. The NMS provides a function of automatically shutting down the port in the case of port self-loop. If the user enables this function in advance, services at this port are interrupted. If the user does not enable this function, a broadcast storm may occur.

Possible Causes

The possible causes of the ETHOAM_VCG_SELF_LOOP alarm are as follows:

  • The links of the VCG port are configured into a loop.

  • The links between VCG ports of the board are configured into a loop.

Procedure

  1. View the alarm on the NMS and determine the number of the VCG port where the alarm occurs according to alarm Parameter 2.
  2. Check the link configuration of the VCG port to see whether the transmit direction of the port is connected to the receive direction of the port. Ensure that the link configuration is correct, and then check whether the alarm is cleared.
  3. If the alarm persists, check the link configuration of the VCG port to see whether this VCG port is connected to another VCG port on the board in the transmit and receive directions. Ensure that the link configuration is correct. Then, the alarm is cleared.

Related Information

None.

Translation
Download
Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 75736

Downloads: 138

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