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Log Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R005C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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FEI/4/hwMflpVlanLoopAlarm_active

FEI/4/hwMflpVlanLoopAlarm_active

Message

FEI/4/hwMflpVlanLoopAlarm_active: MAC flapping detected, VlanId = [VlanId], Original-Port = [IfNameA], Flapping port 1 = [IfNameB], port 2 = [IfNameC]. [AlarmReason].

Description

MAC address flapping occurred in a VLAN.

Parameters

Parameter Name Parameter Meaning

VlanId

Indicates the VLAN ID.

Original-Port

Indicates the interface that learns the flapping MAC address first.

Flapping port 1

Indicates the first interface that learns the flapping MAC address later.

port 2

Indicates the second interface that learns the flapping MAC address later.

Possible Causes

By default, when a user MAC address is learned by different interfaces for more than 10 times, the system generates the alarm about MAC address flapping. You can use the mac-address flapping detection [ security-level { low | middle | high } ] command to configure the security level for MAC address flapping detection.

Procedure

  • Configure the Error-Down action on the interface or enable STP to remove network loops.
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Updated: 2019-04-20

Document ID: EDOC1100039602

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