Configuration Procedure; Enabling Ip Conflict Notification - HP 6125XLG Layer 3-Ip Services Configuration Manual

address of the virtual router. For more information about VRRP, see High Availability Configuration
Guide.

Configuration procedure

The following conditions apply to the gratuitous ARP configuration:
You can enable periodic sending of gratuitous ARP packets on up to 1024 interfaces.
•
Periodic sending of gratuitous ARP packets takes effect only when the link of the enabled interface
•
goes up and an IP address has been assigned to the interface.
• If you change the interval for sending gratuitous ARP packets, the configuration is effective at the
next sending interval.
The frequency of sending gratuitous ARP packets might be much lower than the sending interval set
•
by the user in any of the following circumstances:
This function is enabled on multiple interfaces.
Each interface is configured with multiple secondary IP addresses.
A small sending interval is configured when the previous two conditions exist.
To configure gratuitous ARP:
Step
1. Enter system view.
2. Enable learning of gratuitous
ARP packets.
3. Enable the device to send
gratuitous ARP packets upon
receiving ARP requests whose
sender IP address belongs to
a different subnet.
4. Enter interface view.
5. Enable periodic sending of
gratuitous ARP packets and
set the sending interval.

Enabling IP conflict notification

By default, if the sender IP address of an ARP packet is being used by the receiving device, the receiving
device sends a gratuitous ARP request. It also displays an error message after it receives an ARP reply
about the conflict.
You can use this command to enable the device to display error messages before sending a gratuitous
ARP reply or request for conflict confirmation.
To enable IP conflict notification:
Command
system-view
gratuitous-arp-learning enable
gratuitous-arp-sending enable
interface interface-type
interface-number
arp send-gratuitous-arp [ interval
milliseconds ]
13
Remarks
N/A
By default, learning of gratuitous
ARP packets is enabled.
By default, a device does not send
gratuitous ARP packets upon
receiving ARP requests whose
sender IP address belongs to a
different subnet.
N/A
By default, periodic sending of
gratuitous ARP packets is disabled.