HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Services Comm - Page 16

Gratuitous ARP configuration commands, arp send-gratuitous-arp

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Gratuitous ARP configuration commands arp send-gratuitous-arp Syntax arp send-gratuitous-arp [ interval milliseconds ] View undo arp send-gratuitous-arp VLAN interface view Default level 2: System level Parameters interval milliseconds: Sets the interval at which gratuitous ARP packets are sent, in the range of 200 to 200000 milliseconds. The default value is 2000. Description Use arp send-gratuitous-arp to enable periodic sending of gratuitous ARP packets and set the sending interval for the interface. Use undo arp send-gratuitous-arp to disable the interface from periodically sending gratuitous ARP packets. By default, an interface is disabled from sending gratuitous ARP packets periodically. This function takes effect only when the link of the enabled interface goes up and an IP address has been assigned to the interface. The IP address contained in a gratuitous ARP request can be the VRRP virtual IP address, the primary IP address or a manually configured secondary IP address of the sending interface only. The primary IP address can be configured manually or automatically, whereas the secondary IP address must be configured manually. 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 may be much lower than is 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. system-view [Sysname] interface vlan-interface 2 [Sysname-Vlan-interface2] arp send-gratuitous-arp interval 300 9

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9
Gratuitous ARP configuration commands
arp send-gratuitous-arp
Syntax
arp send-gratuitous-arp
[
interval
milliseconds
]
undo arp send-gratuitous-arp
View
VLAN interface view
Default level
2: System level
Parameters
interval
milliseconds
: Sets the interval at which gratuitous ARP packets are sent, in the range of 200 to
200000 milliseconds. The default value is 2000.
Description
Use
arp send-gratuitous-arp
to enable periodic sending of gratuitous ARP packets and set the sending
interval for the interface.
Use
undo arp send-gratuitous-arp
to disable the interface from periodically sending gratuitous ARP
packets.
By default, an interface is disabled from sending gratuitous ARP packets periodically.
This function takes effect only when the link of the enabled interface goes up and an IP address has been
assigned to the interface.
The IP address contained in a gratuitous ARP request can be the VRRP virtual IP address, the primary IP
address or a manually configured secondary IP address of the sending interface only. The primary IP
address can be configured manually or automatically, whereas the secondary IP address must be
configured manually.
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 may be much lower than is 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 interval 300