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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Preventing MAC Address Flapping Between Interfaces with the Same Priority

Preventing MAC Address Flapping Between Interfaces with the Same Priority

Context

You can configure the device to prevent MAC address flapping between interfaces with the same priority to improve network security.

The switches are configured to prevent MAC address flapping between interfaces with the same priority. After a device (such as the server) connected to switches power off, another interface on switches learns the same MAC address as the device. The device cannot learn the correct MAC address after it powers on.

NOTE:

The CE6870EI and CE6875EI do not support this function.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run undo mac-address learning priority priority-id allow-flapping

    The device is configured to prevent MAC address flapping between interfaces with the same priority.

    By default, the device allows MAC address flapping between interfaces with the same priority.

  3. Run commit

    The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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