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Configuration Guide - IP Service

CloudEngine 8800, 7800, 6800, and 5800 V200R002C50

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DNS, IP performance optimization, IPv6, DHCPv6, and IPv6 DNS.
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Enabling Layer 2 Proxy ARP

Enabling Layer 2 Proxy ARP

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run arp l2-proxy enable

    Layer 2 proxy ARP is enabled.

    By default, Layer 2 proxy ARP is disabled.

    NOTE:
    When Layer 2 proxy ARP is enabled, ARP snooping is automatically enabled and sets up ARP snooping entries recording senders' information by means of monitoring ARP messages. When most network users obtain IP addresses using DHCP, to avoid proxy reply errors from fake ARP snooping entries generated by the bogus ARP messages that network attackers send, it is recommended that users disable the learning function in the VLAN view of ARP snooping entries running the arp l2-proxy learning dynamic-user disable command.

  4. Run commit

    The configuration is committed.

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Updated: 2019-03-21

Document ID: EDOC1000166635

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