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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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Example for Configuring Intra-VLAN Proxy ARP

Example for Configuring Intra-VLAN Proxy ARP

Networking Requirements

In Figure 2-21, 10GE1/0/1 and 10GE1/0/2 belong to sub-VLAN2. VLAN2 is a sub-VLAN of super-VLAN3. Requirements:
  • ServerA and ServerB in VLAN2 are isolated at Layer 2.
  • ServerA and ServerB can communicate at Layer 3 using Intra-VLAN proxy ARP.

The IP address of the VLANIF interface corresponding to the super-VLAN is and the mask is

Figure 2-21 Networking diagram for configuring intra-VLAN proxy ARP

Configuration Roadmap

The configuration roadmap is as follows:

  1. Create and configure a super-VLAN and sub-VLAN.
  2. Add interfaces to the sub-VLAN.
  3. Create a VLANIF interface corresponding to the super-VLAN and configure an IP address for the VLANIF interface.
  4. Enable intra-VLAN proxy ARP on the VLANIF interface.


  1. Configure a super-VLAN and sub-VLAN.

    # Configure sub-VLAN2.
    <HUAWEI> system-view
    [~HUAWEI] sysname Switch
    [*HUAWEI] commit
    [~Switch] vlan 2
    [*Switch-vlan2] commit
    [~Switch-vlan2] quit
    # Enable Layer 2 interface isolation on 10GE1/0/1 and 10GE1/0/2.
    [~Switch] interface 10ge 1/0/1
    [~Switch-10GE1/0/1] port-isolate enable group 1
    [*Switch-10GE1/0/1] quit
    [*Switch] interface 10ge 1/0/2
    [*Switch-10GE1/0/2] port-isolate enable group 1
    [*Switch-10GE1/0/2] quit
    [*Switch] commit
    # Add 10GE1/0/1 and 10GE1/0/2 to sub-VLAN2.
    [~Switch] interface 10ge 1/0/1
    [~Switch-10GE1/0/1] port default vlan 2
    [*Switch-10GE1/0/1] quit
    [*Switch] interface 10ge 1/0/2
    [*Switch-10GE1/0/2] port default vlan 2
    [*Switch-10GE1/0/2] quit
    [*Switch] commit
    # Configure super-VLAN3 and add sub-VLAN2 to super-VLAN3.
    [~Switch] vlan 3
    [*Switch-vlan3] aggregate-vlan
    [*Switch-vlan3] access-vlan 2
    [*Switch-vlan3] quit
    [*Switch] commit

  2. Create and configure VLANIF3.

    # Create VLANIF3.

    [~Switch] interface vlanif 3

    # Configure an IP address for VLANIF3.

    [*Switch-Vlanif3] ip address 24

  3. Enable intra-VLAN proxy ARP on VLANIF3.

    [*Switch-Vlanif3] arp proxy intra-vlan enable
    [*Switch-Vlanif3] commit
    [~Switch-Vlanif3] quit
    [~Switch] quit

  4. Configure servers.

    # Configure IP address for ServerA.

    # Configure IP address for ServerB.

  5. Verify the configuration.

    # Run the display arp command to check all ARP entries.

    <Switch> display arp
    ARP Entry Types: D - Dynamic, S - Static, I - Interface                                                                             
    EXP: Expire-time
    IP ADDRESS      MAC ADDRESS    EXP(M) TYPE/VLAN INTERFACE       VPN-INSTANCE                                                        
    ------------------------------------------------------------------------------                                                       0018-2000-0083        I         Vlanif3                                                                              00e0-fc00-0003   20   D/2       10GE1/0/1                                                                            00e0-fc00-0002   20   D/2       10GE1/0/2                                                                           
    Total:3          Dynamic:2       Static:0    Interface:1  

    # ServerA and ServerB can ping through each other.

Configuration File

Configuration file of the switch

sysname Switch
vlan batch 2 to 3 
vlan 3
 access-vlan 2
interface Vlanif3
 ip address
 arp proxy intra-vlan enable
interface 10GE1/0/1
 port default vlan 2
 port-isolate enable group 1
interface 10GE1/0/2
 port default vlan 2
 port-isolate enable group 1
Updated: 2019-04-18

Document ID: EDOC1100039535

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