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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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Configuring DAI

Configuring DAI


After dynamic ARP inspection (DAI) is enabled, an RU detects the ARP request and reply packets transmitted on the VAPs, discards invalid and attack ARP packets, and sends an alarm to the connected central AP. DAI prevents unauthorized users from connecting to external networks through the RU and protects authorized users from interference and ARP spoofing attacks. In addition, DAI protects the RU's CPU from ARP attacks, which, if not prevented, will cause unavailability of some functions on the RU or even make the RU break down.


  1. Run:


    The system view is displayed.

  2. Run:


    The WLAN view is displayed.

  3. Run:

    vap-profile name profile-name

    The VAP profile view is displayed.

  4. Run:

    arp anti-attack check user-bind enable

    DAI is enabled.

    By default, DAI is disabled.

Updated: 2019-01-11

Document ID: EDOC1000176006

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