xStack® DES-3200 Series Layer 2 Managed Fast Ethernet Switch
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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.
Gratuitous ARP
Learning
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. By default,
Click the Apply button to accept the changes made.
NOTE: 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.
Gratuitous ARP Settings
The user can configure the IP interface’s gratuitous ARP parameter.
To view the following window, click Management > Gratuitous ARP > Gratuitous ARP Settings, as show below:
Figure 3-4 Gratuitous ARP Settings window
The fields that can be configured are described below:
Parameter Description
Trap
Use the drop-down menu to enable or disable the trap option. By default the trap is
Log
Use the drop-down menu to enable or disable the logging option. By default the
Interface Name Enter the interface name of the Layer 3 interface. Select All to enable or disable
gratuitous ARP trap or log on all interfaces.
Interval Time (0-65535)
Enter the periodically send gratuitous ARP interval time in seconds. 0 means that
gratuitous ARP request will not be sent periodically. By default the interval time is 0.
Click the Apply button to accept the changes made for each individual section.
IPv6 Neighbor Settings
The user can configure the Switch’s IPv6 neighbor settings. The Switch’s current IPv6 neighbor settings will be
displayed in the table at the bottom of this window.
To view the following window, click Management > IPv6 Neighbor Settings, as show below:
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