R21xx-HP FlexFabric 11900 Layer 3 IP Services Command Reference

12
Views
Layer 3 Ethernet interface view, VLAN interface view
Predefined user roles
network-admin
Parameters
Milliseconds: Sets the interval at which gratuitous ARP packets are sent, in the range of 200 to 200000
milliseconds.
Usage guidelines
If you change the interval for sending gratuitous ARP packets, the configuration takes effect at the next
sending interval.
The frequency of sending gratuitous ARP packets might be much lower than expected if this function is
enabled on multiple interfaces, or each interface is configured with multiple secondary IP addresses, or
a small sending interval is configured in the preceding cases.
Examples
# Enable VLAN-interface 2 to send gratuitous ARP packets every 300 milliseconds.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] arp send-gratuitous-arp
[Sysname-Vlan-interface2] arp send-gratuitous-arp interval 300
gratuitous-arp-learning enable
Use gratuitous-arp-learning enable to enable learning of gratuitous ARP packets.
Use undo gratuitous-arp-learning enable to disable learning of gratuitous ARP packets.
Syntax
gratuitous-arp-learning enable
undo gratuitous-arp-learning enable
Default
Learning of gratuitous ARP packets is enabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
When learning of gratuitous ARP packets is enabled, a device adds an ARP entry that contains the
sender IP and MAC addresses in a gratuitous ARP packet to its ARP table. If the corresponding ARP entry
exists, the device updates the ARP entry.
When learning of gratuitous ARP packets is disabled, the device uses the received gratuitous ARP
packets to update existing ARP entries, but not to create new ARP entries. You can disable this function
to save ARP entry resources.