Gratuitous Arp; Gratuitous Arp Global Settings - D-Link xStack DGS-3420 Series Reference Manual

xStack® DGS-3420 Series Layer 2 Managed Stackable Gigabit Switch Web UI Reference Guide
The fields that can be configured are described below:
Parameter
Interface Name
IP Address
MAC Address
Click the Find button to locate a specific entry based on the information entered.
Click the Show Static button to display only the static entries in the display table.
Click the Clear All button to remove all the entries listed in the table.
Enter a page number and click the Go button to navigate to a specific page when multiple pages exist.

Gratuitous ARP

Gratuitous ARP Global Settings

The user can enable or disable the gratuitous ARP global settings here.
To view the following window, click Management > Gratuitous ARP > Gratuitous ARP Global Settings, as show
below:
The fields that can be configured are described below:
Parameter
Send On IP Interface
Status Up
Send On Duplicate IP
Detected
Gratuitous ARP
Learning
Figure 3-3 ARP Table window
Description
Enter or view the Interface name used.
Enter or view the IP Address used.
Enter or view the MAC Address used.
Figure 3-4 Gratuitous ARP Global Settings Window
Description
The command is used to enable/disable sending of gratuitous ARP request packet while
the IPIF interface become up. This is used to automatically announce the interface's IP
address to other nodes. By default, the state is disabled, and only one gratuitous ARP
packet will be broadcast.
The command is used to enable/disable the sending of gratuitous ARP request packet
while a 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 somebody 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 packets for this duplicate IP address.
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
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