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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).
CES_MISORDERPKT_EXC

CES_MISORDERPKT_EXC

Description

The CES_MISORDERPKT_EXC alarm indicates that the average number of lost out-of-order packets exceeds the upper threshold value within one second, this alarm is reported. If the average number of out-of-order packets in a second is smaller than the lower threshold value in another period, this alarm is cleared automatically.

Attribute

Alarm Severity Alarm Type

Major

Communication alarm

Parameters

None.

Impact on the System

An NNI port detects out-of-order packets and the packet loss rate is too high.

Possible Causes

Possible causes of the CES_MISORDERPKT_EXC alarm are as follows:

  • The bandwidth configured for the tunnel or PW is so low that the link is congested.
  • Clocks are not synchronous.
  • The link signals deteriorate or are interrupted due to a fault in cables, optical fibers, or optical modules.

Procedure

  1. Check whether the bandwidth configured for the tunnel or PW which carries the CES service is too low.
  2. If the bandwidth configured for the tunnel or PW which carries the CES service is too low, allocate the tunnel or PW higher bandwidth. Then, check whether the alarm is cleared. If the alarm persists, go to 3.
  3. Check whether the LTI alarm or other clock-related alarms are reported on the NE. If such alarms are reported, the clocks are not synchronous and the ingress rate of the buffer is different from the egress rate of the buffer.
  4. Clear the LTI alarm and other clock-related alarms first, and then check whether the CES_MISORDERPKT_EXC alarm is cleared. If the alarm persists, go to 5.
  5. Check whether cables or optical fibers are incorrectly connected to the ports and whether the ports are dirty.
  6. If the cables or optical fibers are incorrectly connected, reconnect the cables or optical fibers. If the ports are dirty, clean the ports.
  7. Check whether the alarm is cleared. If the alarm persists, replace the cables, optical cables, or optical modules/boards.
  8. Check whether the alarm is cleared. If the alarm persists, 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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