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DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch CLI Manual
292
config gratuitous_arp send duplicate_ip_detected
Description The command is used to enable/disable sending of gratuitous ARP request packet while
duplicate IP is detected. By default, the state is disabled. For this command, the duplicate IP
detected means that the system received an ARP request packet that is sent by an IP
address that match the system’s own IP address. In this case, the system knows that some
body out there uses an IP address that is conflict with 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.
Parameters
enable - Enable sending of gratuitous ARP when duplicate IP is detected.
disable - Disable sending of gratuitous ARP when duplicate IP is detected.
Restrictions Only Administrator and Operator-level users can issue this command.
Example usage:
To enable send gratuitous ARP request when duplicate IP is detected:
DGS-3627:admin# config gratuitous_arp send dup_ip_detected enable
Command: config gratuitous_arp send dup_ip_detected enable
Success.
DGS-3627:admin#
config gratuitous_arp learning
Purpose Used to enable or disable learning of ARP entry in ARP cache based on the received
gratuitous ARP packet.
Syntax
config gratuitous_arp learning [enable | disable]
Description Normally, the system will only learn the ARP reply packet or a normal ARP request packet
that asks for the MAC address that corresponds to the system’s IP address. The command is
used to enable/disable learning of ARP entry in ARP cache based on the received gratuitous
ARP packet. The gratuitous ARP packet is sent by a source IP address that is identical to the
IP that the packet is queries for. Note that, with the gratuitous ARP learning, the system will
not learn new entry but only do the update on the ARP table based on the received gratuitous
ARP packet. By default, the state is disabled.
Parameters
enable - Enable learning of ARP entry based on the received gratuitous ARP packet.
disable - Disable learning of ARP entry based on the received gratuitous ARP packet.
Restrictions Only Administrator and Operator-level users can issue this command.
Example usage:
To enable update ARP table when Gratuitous ARP received:
DGS-3627:admin# config gratuitous_arp learning enable
Command: config gratuitous_arp learning enable
Success.
DGS-3627:admin#
config gratuitous_arp periodical_send
Purpose Used to configure the interval for periodical sending of gratuitous ARP request packet.
Syntax
config gratuitous_arp send periodically ipif <ipif_name 12> interval <value 0-65535>