1-8
Operation Command Remarks
Quit to system view
quit
—
Enable the port state
auto-recovery function
arp protective-down recover
enable
Optional
By default, the port state
auto-recovery function is
disabled.
Configure the port state
auto-recovery interval
arp protective-down recover
interval interval
Optional
By default, when the port state
auto-recovery function is
enabled, the port state
auto-recovery interval is 300
seconds.
z You need to enable the port state auto-recovery feature before you can configure the port state
auto-recovery interval.
z You are not recommended to configure the ARP packet rate limit function on the ports of an
aggregation group.
Gratuitous ARP Packet Configuration
Table 1-7 Configure the gratuitous ARP packet
Operation Command Remarks
Enter system view
system-view
—
Enable the gratuitous
ARP packet learning
function
gratuitous-arp-learning
enable
Required
By default, the gratuitous ARP packet
learning function is disabled.
The sending of gratuitous ARP packets is enabled as long as a Switch 4210 operates. No command is
needed for enabling this function. That is, the device sends gratuitous ARP packets whenever a VLAN
interface is enabled (such as when a link is enabled or an IP address is configured for the VLAN
interface) or whenever the IP address of a VLAN interface is changed.
Displaying and Debugging ARP
After the above configuration, you can execute the display command in any view to display the running
of the ARP configuration, and to verify the effect of the configuration.
You can execute the reset command in user view to clear ARP entries.
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