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CLI-based Configuration Guide - IP Service

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document describes the concepts and configuration procedures of IP Service features on the device, and provides the configuration examples.

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Summary of ARP Configuration Tasks

Summary of ARP Configuration Tasks

ARP entries are classified into static and dynamic ARP entries. The device supports the adjustment of dynamic ARP entry aging parameters, configuration of static ARP entries, and some extended ARP applications such as proxy ARP.

Table 2-3 describes the ARP configuration tasks. You can perform the configuration tasks in any sequence based on service requirements.
NOTE:

For details on ARP security, see ARP Security Configuration in the Huawei AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 Series Enterprise Routers Configuration - Security.

Table 2-3  Summary of ARP configuration tasks

Scenario

Description

Task

Adjusting aging parameters of dynamic ARP entries

Dynamic ARP entries can be aged, updated, or overridden by static ARP entries. They are generated and maintained automatically using the ARP protocol.

You can adjust the aging parameters of dynamic ARP entries based on service requirements.

Adjusting Aging Parameters of Dynamic ARP Entries

Configuring static ARP

Static ARP entries will not be aged or overridden by dynamic ARP entries, ensuring communication security.

Static ARP entries can be configured for important devices (such as servers) on the router.

Configuring Static ARP

Configuring proxy ARP

Proxy ARP falls into the following types and applies to different scenarios:
  • Routed proxy ARP: enables hosts (without default gateway configured) to communicate when they are located on the same network segment but different physical networks (different broadcast domains).
  • Intra-VLAN proxy ARP: enables hosts to communicate when they are located on the same network segment and same VLAN but user isolation is configured in the VLAN.
  • Inter-VLAN proxy ARP: enables hosts to communicate when they are located on the same network segment but different VLANs.
Configuring Proxy ARP

Connecting the device to an NLB cluster

Network load balance (NLB) is a Microsoft-developed feature running in a cluster of multiple Windows servers. You can enable the device to interwork with an NLB cluster using any of the following methods:

  • Configure multi-interface ARP when the device is directly connected to the NLB cluster.
  • Enable the device to dynamically learn ARP entries with multicast MAC addresses when the device connects to the NLB cluster through a Layer 2 switch.

Configuring dynamic learning of ARP entries with multicast MAC addresses

When the user terminals connected to the device have multicast MAC addresses, the device can be configured to dynamically learn ARP entries with multicast MAC addresses.

Configuring Dynamic Learning of ARP Entries with Multicast MAC Addresses

Configuring ARP unicast probe

When the peer device cannot receive broadcast packets, ARP unicast probe can be configured on the local device.

After ARP unicast probe is configured, the device sends a unicast ARP Request packet to detect whether a user terminal exists.

Configuring ARP Unicast Probe

Configuring ARP-Ping

ARP-Ping includes ARP-Ping IP and ARP-Ping MAC. ARP-Ping is used to check whether a specified IP address or MAC address is used by sending ARP Request packets or ICMP Request packets.

  • ARP-Ping IP checks whether an IP address is used by another device on the network.

  • ARP-Ping MAC checks whether a MAC address is used or queries the IP address mapping the MAC address.

Configuring ARP-Ping
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Updated: 2019-03-06

Document ID: EDOC1100069333

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