R0106-HP MSR Router Series Layer 3 - IP Services Command Reference(V7)

2
Default
ARP logging is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
This function enables a device to log ARP events when ARP cannot resolve IP addresses correctly. The
events include the following:
• 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.
The device can generate a large amount of ARP logs. To conserve system resources, enable ARP logging
only when you are troubleshooting or debugging ARP events.
Examples
# Enable ARP logging.
<Sysname> system-view
[Sysname] arp check log enable
arp max-learning-num
Use arp max-learning-num to set the maximum number of dynamic ARP entries that an interface can
learn.
Use undo arp max-learning-num to restore the default.
Syntax
arp max-learning-num number
undo arp max-learning-num
Views
Layer 2 Ethernet interface view
Layer 3 Ethernet interface/subinterface view
Layer 3 aggregate interface view