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CLI-based Configuration Guide - IP Service

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

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

Configuration Task Summary

ARP can be a dynamic ARP or a static ARP. ARP provides some extended functions, such as proxy ARP, ARP-Ping.

Table 2-1 describes the ARP configuration tasks.
Table 2-1  ARP configuration task summary

Scenario

Description

Task

Configuring Static ARP

Static ARP entries improve communication security. However, a large number of ARP entries increase configuration and maintenance costs.

Static ARP entries can be configured on important network devices such as servers to specify member devices that they can communicate with. In this way, mappings between IP addresses and MAC addresses of these member devices cannot be modified by forged ARP packets and illegal ARP replies can be prevented. This protects servers against network attacks.

Configuring Static ARP

Optimizing Dynamic ARP

Dynamic ARP entries are generated and maintained automatically using the ARP protocol.

  • They can be aged, updated, or overridden by static ARP entries.

  • By default, ARP entries are dynamically learned and maintained.

Optimizing Dynamic ARP

Configuring Proxy ARP

Proxy ARP is classified into the following three types:
  • Routed Proxy ARP: Routed Proxy ARP enables network devices on the same network segment but on different physical networks to communicate.
  • Intra-VLAN Proxy ARP: Intra-VLAN Proxy ARP enables isolated network devices in a VLAN to communicate.
  • Inter-VLAN Proxy ARP: Inter-VLAN Proxy ARP enables network devices in different VLANs or network devices in different sub-VLANs but on the same network segment to communicate.
Configuring Proxy ARP

Configuring ARP-Ping

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

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

Configuring ARP-Ping
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Updated: 2019-05-20

Document ID: EDOC1100034231

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