H3C Technologies H3C SecPath F1000-E - Manual (Page 280)

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Item Description
Send gratuitous ARP packets when receiving ARP
requests from another network segment
Enable the firewall to send gratuitous ARP packets
upon receiving ARP requests from another network
segment.
Configuring gratuitous ARP at the CLI
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable learning of gratuitous
ARP packets.
gratuitous-arp-learning enable
Optional.
Enabled by default.
3. Enable the firewall to send
gratuitous ARP packets upon
receiving ARP requests from
another subnet.
gratuitous-arp-sending enable
By default, the firewall does not
send gratuitous ARP packets upon
receiving ARP requests from
another subnet.
4. Enter interface view.
interface interface-type
interface-number
N/A
5. Enable periodic sending of
gratuitous ARP packets and
set the sending interval.
arp send-gratuitous-arp [ interval
milliseconds ]
Disabled by default.
NOTE:
• You can enable periodic sending of gratuitous ARP packets on a maximum of 1024 interfaces.
• Periodic sending of gratuitous ARP packets 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, if each interface is configured with multiple secondary IP addresses, or
if a small sending interval is configured in such cases.