arp regularly-refresh enable

Function

The arp regularly-refresh enable command enables the function of periodically updating ARP entries in the device hardware table.

The undo arp regularly-refresh enable command disables the function of periodically updating ARP entries in the device hardware table.

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

Only the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this command.

Format

arp regularly-refresh enable

undo arp regularly-refresh enable

Parameters

None

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

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.

Precautions

To reduce the load on a device, when the CPU usage reaches about 50%, the device does not periodically update ARP entries in the device hardware table.

Example

# Enable the function of periodically updating ARP entries in the device hardware table.

<HUAWEI> system-view
[HUAWEI] arp regularly-refresh enable