Before updating ARP entries, clear ARP entries on the device so that the device will relearn the entries.

NOTICE:

After ARP entries are cleared, mappings between IP addresses and MAC addresses are deleted. As a result, users may not access specified nodes. Exercise caution when you clear ARP entries.

# Clear all ARP entries on the device.

<HUAWEI> reset arp all

# Clear the dynamic ARP entries with the IP address 172.16.10.1 on the device.

<HUAWEI> reset arp dynamic ip 172.16.10.1 //If the IP address is not specified, all dynamic ARP entries are deleted from the device.

# Clear all static ARP entries on the device.

<HUAWEI> reset arp static
Warning: This operation will reset all static ARP entries, and clear the configurations of all static ARP, continue?[Y/N]:y 

# Clear the static ARP entries with the IP address 172.16.20.1, MAC address 0023-0045-0067, and outbound interface GE1/0/1 on the device.

<HUAWEI> system-view
[HUAWEI] undo arp static 172.16.20.1 0023-0045-0067 interface gigabitethernet 1/0/1

# Clear the ARP entries learned from VLANIF 100 with the IP address 172.16.20.1 on the device.

<HUAWEI> reset arp interface vlanif 100 ip 172.16.20.1 //If the IP address is not specified, all ARP entries learned by VLANIF 100 are deleted from the device.