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Alarm Handling

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the trap description, attributes, parameters, impact on the system, possible causes, procedures, and references. This document provides a complete set of traps, through which intended readers are kept of the running status of the device so as to locate faults.

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ARP_1. hwEthernetARPLearnStopAlarm

ARP_1. hwEthernetARPLearnStopAlarm


ARP/4/ARP_LEARNSTOP_TRAP:OID [OID] ARP learning stopped because the memory usage reached the threshold. (Slot index=[INTEGER], Threshold=[COUNTER]).

When a board memory usage reached the threshold (Board memory restart threshold - 1), the board stopped leaning ARP entries. For example, the 1 GB memory restart threshold is 90%, and the 2 GB memory restart threshold is 95%. When the memory usage of a board with a 1 GB memory installed reaches 89%, the alarm is generated. When the memory usage of a board with a 2 GB memory installed reaches 94%, the alarm is generated.


Alarm ID Alarm Severity Alarm Type




Name Meaning


Indicates the MIB object ID of the alarm.

Slot index

Indicates the index of the board that reports the alarm.


Indicates the alarm threshold.

Impact on the System

The alarm is generated when the board carries a lot of services and the memory usage reaches the threshold (Board memory restart threshold - 1). As a result, the board stops learning ARP entries, causing user service failures.

Possible Causes

The board memory usage reached the threshold (Board memory restart threshold - 1) so that the board stopped learning ARP entries.


  1. Run the display health command to check the board's memory usage.
  2. Collect alarm information and configuration information, and then contact technical support personnel.
Updated: 2019-03-06

Document ID: EDOC1100041475

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