D-Link DGS-1250 User Manual - Page 137

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide Parameter Mask Hardware Address Type Description After the IP Address option was selected, enter the mask address for the IP address here. Select and enter the MAC address to display here. Select the Type option here. Options to choose from are All and Dynamic. Click the Find button to locate a specific entry based on the information entered. Click the Clear All button to clear all dynamic ARP cache. Click the Clear button to clear the dynamic ARP cache associated with the specific entry. 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 6-4 Gratuitous ARP Window The fields that can be configured are described below: Parameter Gratuitous ARP Trap State Description Select to enable or disable the gratuitous ARP feature trap state here. Click the Apply button to accept the changes made. 128