
xStack
®
DES-3810 Series Layer 3 Managed Ethernet Switch Web UI Reference Guide
26
To view the following window, click
Management > Gratuitous ARP > Gratuitous ARP Global Settings
, as shown
below:
Figure 3-4 Gratuitous ARP Global Settings window
The fields that can be configured are described below:
Parameter
Description
Send On IP Interface
Status Up
The command is used to enable/disable sending of gratuitous ARP request packets while
the IP interface is becoming 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.
Send On Duplicate IP
Detected
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.
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, the state is
disabled.
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 shown below:
Figure 3-5 Gratuitous ARP Settings window
The fields that can be configured are described below:
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