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Configuration Guide - IP Service

CloudEngine 12800 and 12800E V200R005C00

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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Configuring Intra-VLAN Proxy ARP

Configuring Intra-VLAN Proxy ARP


If the hosts belong to the same VLAN with Layer 2 port isolation configured, intra-VLAN proxy ARP can be enabled on the interfaces associated with the VLAN to allow the hosts to communicate at Layer 3.

As shown in Figure 2-10, Host A and Host B are connected to the Switch. The two interfaces connected to Host A and Host B belong to VLAN 4 on the Switch. Host A and Host B cannot communicate at Layer 2 because Layer 2 port isolation in a VLAN is configured on the Switch.
Figure 2-10 Intra-VLAN proxy ARP implementation

You can enable intra-VLAN proxy ARP on VLANIF 4 of the Switch to solve this problem.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run arp proxy intra-vlan enable

    Intra-VLAN proxy ARP is enabled.

    By default, intra-VLAN proxy ARP is disabled.

  4. Run commit

    The configuration is committed.

Updated: 2019-04-18

Document ID: EDOC1100039535

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