H3C S5120-SI Series Command Reference Manual page 257

View
VLAN interface view
Default Level
2: System level
Parameters
interval milliseconds: Sets the interval at which gratuitous ARP packets are sent. The value ranges 200
to 5000, in milliseconds. The default value is 2000 ms.
Description
Use the arp anti-attack send-gratuitous-arp command to enable periodic sending of gratuitous ARP
packets and set the sending interval.
Use the undo arp anti-attack send-gratuitous-arp command to disable the device from periodically
sending gratuitous ARP packets.
By default, the device is disabled from sending gratuitous ARP packets periodically.
Note that:
This function takes effect only when the link of the interface goes up and an IP address has been
assigned to the interface.
If you change the interval of sending ARP packets, the configuration is effective at the next sending
interval.
Examples
# Enable VLAN-interface 2 to send gratuitous ARP packets every 300 ms.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] arp anti-attack send-gratuitous-arp 300
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