D-Link xStack DGS-3420 Series Reference Manual page 437

xStack® DGS-3420 Series Layer 2 Managed Stackable Gigabit Switch CLI Reference Guide
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To enable learning of ARP entries in the ARP cache based on the received gratuitous ARP packets:
DGS-3420-28SC:admin# config gratuitous_arp learning enable
Command: config gratuitous_arp learning enable
Success.
DGS-3420-28SC:admin#
37-4 config gratuitous_arp send dup_ip_detected
Description
This command is used to enable or disable the sending of gratuitous ARP requests when a duplicate
IP address is detected. By default, the state is disabled. For this command, duplicate IP detected
means that the system received an ARP request packet that is sent by an IP address that matches the
system's own IP address. In this case, the system knows that somebody out there is using an IP
address that conflicts with that of the system. In order to reclaim the correct host of this IP address, the
system can send out the gratuitous ARP request packet for this duplicate IP address.
Format
config gratuitous_arp send dup_ip_detected [enable | disable]
Parameters
enable - Enable the sending of gratuitous ARP requests when a duplicate IP is detected.
disable - Disable the sending of gratuitous ARP requests when a duplicate IP is detected.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To enable the sending of gratuitous ARP requests when a duplicate IP address is detected:
DGS-3420-28SC:admin#config gratuitous_arp send dup_ip_detected enable
Command: config gratuitous_arp send dup_ip_detected enable
Success.
DGS-3420-28SC:admin#
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