3Com Switch 7750 Configuration Guide Guide

ARP Configuration 553
Configuring the
Gratuitous ARP Update
Interval
Configuring ARP proxy
Configuring ARP Source
Suppression
Prevent illegal ARP packets from attacking the CPU by setting maximum numbers
of ARP packets of different types that can be sent to the CPU at a time.
Enable the gratuitous ARP
packet learning function
gratuitous-arp-learning
enable
Required
By default, the gratuitous ARP
packet learning function is
disabled.
Table 424 Configure the gratuitous ARP packet learning function
Operation Command Description
Table 425 Configure the gratuitous ARP update interval
Operation Command Description
Enter system view system-view -
Enable gratuitous ARP packets
to be sent periodically
arp gratuitous-updating
enable
Required
By default, this function is
disabled on the switch.
Set a gratuitous ARP update
interval
arp timer
gratuitous-updating
updating-interval
Optional
The gratuitous ARP update
interval defaults to five
minutes after this function is
enabled.
Table 426 Configure ARP proxy
Operation Command Description
Enter system view system-view -
VLAN interface view
interface Vlan-interface
vlan-id
-
Enable ARP proxy arp proxy enable
Required
By default, ARP proxy function
is disabled.
Enable incoming VLAN ARP
proxy
arp proxy source-vlan
enable
Optional
By default, ARP proxy only
processes the ARP request
between different VLANs. The
incoming VLAN ARP function
is disabled.
Table 427 Configure ARP source suppression
Operation Command Description
Enter system view system-view -