arp regularly-refresh entry-number
Function
The arp regularly-refresh entry-number command sets the number of ARP entries in the hardware table updated each time.
The undo arp regularly-refresh entry-number command restores the default number of ARP entries in the hardware table updated each time.
By default, the number of ARP entries in the hardware table updated each time is 50.
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.
Parameters
| Parameter | Description | Value |
|---|---|---|
entry-number |
Specifies the number of ARP entries in the hardware table updated each time. |
The value is an integer in the range from 1 to 100. The default value is 50. |
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. You can set the number of ARP entries in the hardware table updated each time as required.
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.