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CLI-based Configuration Guide - Ethernet Switching

AR650, AR1600, and AR6100 V300R003

This document describes how to configure the components for LAN services, including link aggregation groups, VLANs, voice VLANs, MAC address tables, transparent bridging, as well as GVRP, STP/RSTP, and MSTP protocols.
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Configuring a Blackhole MAC Address Entry

Configuring a Blackhole MAC Address Entry

Blackhole MAC address entries can be used to filter out invalid MAC addresses.

Context

To protect a device or network against MAC address attacks from hackers, configure MAC addresses of untrusted users as blackhole MAC addresses. The device then directly discards the received packets of which the source or destination MAC addresses match the blackhole MAC address entries.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run mac-address blackhole mac-address vlan vlan-id

    A blackhole MAC address entry is configured.

    NOTE:

    For the AR651U-A4, AR651F-Lite, and AR6120, when the source MAC addresses of packets are blackhole MAC addresses, the device forwards packets and does not discard them.

Verifying the Configuration

Run the display mac-address blackhole command to check configured blackhole MAC address entries.

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Updated: 2019-04-12

Document ID: EDOC1100041791

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