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Configuration Guide - IP Service

S2720, S5700, and S6720 V200R013C00

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 the Function of Periodically Updating ARP Entries

Configuring the Function of Periodically Updating ARP Entries

Context

After a device learns ARP entries, it saves them to the software table and then delivers them to the hardware table. If the entries in the hardware table are incorrect, packets cannot be forwarded normally. In this case, you can enable the function of periodically updating ARP entries in the device hardware table to correct the ARP entries so that packets can be forwarded normally.

NOTE:

Only the S5720HI, S5730HI, S6720EI, S6720HI, and S6720S-EI support this function.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run arp regularly-refresh enable

    The function of periodically updating ARP entries in the device hardware table is enabled.

    By default, the function of periodically updating ARP entries in the device hardware table is enabled.

  3. (Optional) Run arp regularly-refresh cycle-interval cycle-interval

    The interval for updating ARP entries in the device hardware table is specified.

    By default, the interval for updating ARP entries in the device hardware table is 1 minute.

  4. (Optional) Run arp regularly-refresh scan-interval scan-interval

    The scan interval for updating ARP entries in the device hardware table is specified.

    By default, the scan interval for updating ARP entries in the device hardware table is 1 second.

  5. (Optional) Run arp regularly-refresh entry-number entry-number

    The number of updating ARP entries in the device hardware table each time is specified.

    By default, the number of ARP entries in the hardware table updated each time is 50.

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Updated: 2019-04-20

Document ID: EDOC1100065678

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