8
Gratuitous ARP configuration commands
arp send-gratuitous-arp
Syntax
arp send-gratuitous-arp [ interval milliseconds ]
undo arp send-gratuitous-arp
View
VLAN interface view
Default level
2: System level
Parameters
interval milliseconds: Sets the interval at which gratuitous ARP packets are sent, in the range 200 to
200,000 milliseconds. The default value is 2000.
Description
Use the arp send-gratuitous-arp command to enable periodic sending of gratuitous ARP packets and set
the sending interval for the interface.
Use the undo arp send-gratuitous-arp command to disable the interface from periodically sending
gratuitous ARP packets.
By default, an interface is disabled from sending gratuitous ARP packets periodically.
This function takes effect only when the link of the enabled interface goes up and an IP address has been
assigned to the interface.
If you change the interval for sending gratuitous ARP packets, the configuration is effective at the next
sending interval.
The frequency of sending gratuitous ARP packets may be much lower than is expected if this function is
enabled on multiple interfaces, or each interface is configured with multiple secondary IP addresses, or a
small sending interval is configured in the preceding cases.
Examples
# Enable VLAN-interface 2 to send gratuitous ARP packets every 300 millionseconds.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] arp send-gratuitous-arp interval 300
gratuitous-arp-sending enable
Syntax
gratuitous-arp-sending enable
undo gratuitous-arp-sending enable
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