HP 6125XLG - Configuring ARP Fast Update

7
• On a proxy ARP-disabled interface, the target IP address of a received ARP packet is not one of the
following IP addresses:
{ The IP address of the receiving interface.
{ The virtual IP address of the VRRP group.
{ The NATed external address.
• The sender IP address of a received ARP reply conflicts with one of the following IP addresses:
{ The IP address of the receiving interface.
{ The virtual IP address of the VRRP group.
{ The NATed external address.
The device sends ARP log messages to the information center. You can use the info-center source
command to specify the log output rules for the information center. For more information about
information center, see Network Management and Monitoring Configuration Guide.
To enable the ARP logging function:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enable the ARP logging
function.
arp check log enable By default, ARP logging is disabled.
Configuring ARP fast update
ARP fast update for MAC move allows the device to update an ARP entry immediately after the output
interface for a MAC address changes. This feature ensures data connection without interruption.
In a network as shown in Figure 3,
a mobile user Laptop accesses the network by connecting to AP 1 or
AP 2. When the AP to which the user connects changes, the switch updates the ARP entry for the user
immediately after it detects a MAC move event.
Figure 3 ARP fast update application scenario
To enable ARP fast update for MAC move:
Step Command Remarks
1. Enter system view.
system-view N/A