Configuring Gratuitous Arp Learning; Configuring Arp Attack Detection - H3C S7500 Series Operation Manual

Operation Manual – ARP
H3C S7500 Series Ethernet Switches
Enter system view
Enable gratuitous ARP
packets to be sent
periodically
Set a gratuitous ARP
update interval
Note:
With VRRP enabled on a VLAN interface of a switch:
If the switch is the master switch, it sends gratuitous ARP messages with the IP
address of the VRRP virtual router.
If it is not the master switch, it sends gratuitous ARP messages with the primary and
all the secondary IP addresses of the VLAN interface.

1.2.7 Configuring Gratuitous ARP Learning

Follow these steps to enable gratuitous ARP learning:
Enter system view
Enable gratuitous ARP
learning

1.2.8 Configuring ARP Attack Detection

Follow these steps to configure ARP attack detection:
Enter system view
Set the maximum number
of IP addresses to be
bound to a MAC address
in a VLAN
To do...
system-view
arp gratuitous-updating
enable
arp timer
gratuitous-updating
updating-interval
To do...
system-view
gratuitous-arp-learning
enable
To do...
system-view
arp mac-arp-map limit
number
Use the command...
Use the command...
Use the command...
1-9
Chapter 1 ARP Configuration
Remarks
—
Required
By default, this function is
disabled on the switch.
Optional
The gratuitous ARP
update interval defaults to
five minutes after this
function is enabled.
Remarks
—
Required
Disabled by default.
Remarks
—
Required
By default, the maximum
number is 2.