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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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(Optional) Configuring User-isolate Interfaces

(Optional) Configuring User-isolate Interfaces

Background Information

On a network an intermediate device is deployed between hosts and your device, if two hosts have the same matching interface in the DHCP snooping binding table, the device considers that these two hosts can directly communicate, so that your device will discard the received ARP request packets. However, if the Layer 2 interface isolation function has been configured on the intermediate device, the hosts will fail to communicate with each other.

This problem can be resolved by configuring the interface as a user-isolate interface. After the interface is configured as a user-isolate interface, the device will implement the Layer-2 proxy ARP function so that the hosts can communicate with each other.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run arp l2-proxy user-isolate-port

    The interface is configured as a user-isolate interface.

    By default, no user-isolate interface is configured.

    NOTE:
    CE6880EI does not support the command.

  4. Run commit

    The configuration is committed.

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Updated: 2019-03-21

Document ID: EDOC1000166635

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