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DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
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Enter a page number and click the Go button to navigate to a specific page when multiple pages exist.
Gratuitous ARP
This window is used to display and configure the gratuitous ARP settings. A gratuitous ARP request packet is an ARP
request packet where the source and the destination IP address are both set to the IP address of the sending device
and the destination MAC address is the broadcast address.
Generally, a device uses the gratuitous ARP request packet to discover whether the IP address is duplicated by other
hosts or to preload or reconfigure the ARP cache entry of hosts connected to the interface.
To view the following window, click L3 Features > Gratuitous ARP, as shown below:
Figure 6-6 Gratuitous ARP Window
The fields that can be configured are described below:
Parameter Description
IP Gratuitous ARP State Select to enable or disable the learning of gratuitous ARP packets in the ARP
cache table.
Gratuitous ARP Trap State Select to enable or disable the gratuitous ARP feature trap state here.
IP Gratuitous ARP Dad-
Reply State
Select to enable or disable the IP gratuitous ARP Dad-reply state.
Gratuitous ARP Learning
State
Select to enable or disable the gratuitous ARP learning state. Normally, the
system will only learn ARP entries from ARP reply packets or a normal ARP
request packet that asks for the MAC address of the Switch IP address. This
option used to enable or disable the learning of ARP entries based on received
gratuitous ARP packets. The gratuitous ARP packet is sent by a source IP
address and is identical to the IP that the packet is querying.
Click the Apply button to accept the changes made.
Click the Edit button to re-configure the specific entry.
Enter a page number and click the Go button to navigate to a specific page when multiple pages exist.
After clicking the Edit button, the field that can be configured for Gratuitous ARP Send Interval is described below:
Parameter Description
Interval Time Enter the gratuitous ARP sending interval time, in seconds, here.
Click the Apply button to accept the changes made.
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