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User Guide 620
Configuring ARP ARP Configurations
Figure 2-3 Configuring Gratuitous ARP
Follow these steps to configure the Gratuitous feature for the interface.
1) In the Gratuitous ARP Global Settings section, configure the global parameters for
gratuitous ARP. Then click Apply.
Send on IP
Interface Status
Up
With this option enabled, the interface will send gratuitous ARP request packets
when its status becomes up. This is used to announce the interface’s IP address to
the other hosts. It is enabled by default.
Send on
Duplicate IP
Detected
With this option enabled, the interface will send gratuitous ARP request packets
when a gratuitous ARP request packet is received for which the IP address is the
same as the interface’s. In this case, the switch knows that another host is using
the same IP address as its own. To claim the IP address for the correct owner, the
interface sends gratuitous ARP packets. It is disabled by default.
Gratuitous ARP
Learning
Normally, the switch only updates the MAC address table by learning from the ARP
reply packet or normal ARP request packet. With this option enabled, the switch will
also update the MAC address table by learning from the received gratuitous ARP
packets. It is disabled by default.
2) In the Gratuitous ARP Table section, configure the interval of sending gratuitous ARP
request packets for the interface. Then click Apply.
Interface Name Displays the Interface ID of the Layer 3 interface.
Gratuitous ARP
Periodical Send
Interval
Enter the interval of sending gratuitous ARP request packets for the interface.
A value of 0 means the interface will not send gratuitous ARP request packets
periodically.
2.1.4 Configuring Proxy ARP
Proxy ARP is used in the situation that two devices are in the same network segment but
connected to different Layer 3 interfaces.
Choose the menu L3 FEATURES> ARP > Proxy ARP > Proxy ARP to load the following
page.
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