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Configuration Guide - IP Service
S1720, S2700, S5700, and S6720 V200R011C10

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DHCP policy VLAN, DNS, mDNS gateway, mDNS relay, UDP Helper, IP performance optimization, IPv6, DHCPv6, IPv6 DNS, IPv6 over IPv4 tunnel, and IPv4 over IPv6 tunnel.

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Configuring ARP Unicast Probe

Configuring ARP Unicast Probe


On some special networks, user terminals do not accept broadcast packets to ensure network security. Therefore, these user terminals directly discard the received broadcast ARP Request packets, and other devices on the networks cannot learn the ARP entries.

To detect whether user terminals exist, configure ARP unicast probe to enable a device to send a unicast ARP Request packet.


  • Run the arp send-packet ip-address mac-address interface interface-type interface-number [ vid vid [ cevid cevid ] ] command in any view to configure ARP unicast probe.

    The cevid cevid parameter can be specified on the S5720EI, S5720HI, S6720EI, and S6720S-EI.

    After ARP unicast probe is configured, the device sends a unicast ARP Request packet.

Verifying the Configuration

Run the display current-configuration | include arp send-packet command to check the ARP unicast probe configuration.

Updated: 2020-02-26

Document ID: EDOC1000178170

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