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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The ARP_MAC_MISMATCH alarm indicates that the Address Resolution Protocol (ARP) static MAC address is different from the actual one.


Alarm Severity Alarm Type
Major Communication alarm


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
Parameters 1 to 4 Represent the IP index.

Impact on the System

When an ARP_MAC_MISMATCH alarm is generated, services are interrupted.

Possible Causes

The user-configured static ARP MAC address is different from the actual MAC address.


  1. Reconfigure the static ARP MAC address to be same as the peer-end MAC address. For details, see Configuring Address Resolution in the Configuration Guide (Packet Transport Domain).
  2. Check whether the ARP_MAC_MISMATCH alarm clears. If the alarm persists, go to 3.
  3. Replace the peer-end board, ensuring that the MAC address of its port connecting to the local-end board is the same as the static ARP MAC address configured at the local end.
  4. Check whether the alarm clears. If the alarm persists, contact Huawei engineers to handle the alarm.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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