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xStack® DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch CLI Reference Guide
319
config gratuitous_arp send dup_ip_detected
Purpose
Used to enable/disable the sending of gratuitous ARP requests while a duplicate IP address
is being detected.
Syntax
config gratuitous_arp send duplicate_ip_detected [enable | disable]
Description
The command is used to enable/disable the sending of gratuitous ARP request packets
when a duplicate IP has been 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 matches the system’s own IP address. In this case, the system knows
that somebody is using an IP address that is in conflict with the system. In order to reclaim
the correct host of this IP address, the system can send out the gratuitous ARP request
packet for this duplicate IP address.
Parameters
enable
−
Enable sending of gratuitous ARP when a duplicate IP is detected.
disable
−
Disable sending of gratuitous ARP when a duplicate IP is detected.
Restrictions
Only Administrator and Operator and Power-User-level users can issue this command.
Example Usage:
To enable send a gratuitous ARP request when a duplicate IP is detected:
DES-3528:admin# config gratuitous_arp send duplicate_ip_detected enable
Command: config gratuitous_arp send duplicate_ip_detected enable
Success.
DES-3528:admin#
config gratuitous_arp learning
Purpose
Used to enable/disable the learning of ARP entries in the ARP cache based on the received
gratuitous ARP packets.
Syntax
config gratuitous_arp learning [enable | disable]
Description
The command is used to enable/disable updating the ARP cache based on the received
gratuitous ARP packets. The gratuitous ARP packet is sent by a source IP address that is
identical to the IP that the packet is queries for. Note that, 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. By default, the state is disabled.
Parameters
enable
−
Enable learning of ARP entry based on the received gratuitous ARP packet.
disable
−
Disable learning of ARP entry based on the received gratuitous ARP packet.
Restrictions
Only Administrator and Operator and Power-User-level users can issue this command.
Example usage:
To enable learning of ARP entry based on the received gratuitous ARP packet:
DES-3528:admin# config gratuitous_arp learning enable
Command: config gratuitous_arp learning enable
Success.
DES-3528:admin#