gratuitous-arp learn enable

Function

The gratuitous-arp learn enable command enables an interface to enable learning of gratuitous ARP packets.

The undo gratuitous-arp learn enable command disables the learning of gratuitous ARP packets.

Format

gratuitous-arp learn enable

undo gratuitous-arp learn enable

Parameters

None

Views

Ethernet interface view, Ethernet sub-interface view, Eth-Trunk interface view, Eth-Trunk sub-interface view, VLANIF interface view, Management interface view

Default Level

2: Configuration level

Usage Guidelines

By default, the USG6000E have the function of learning gratuitous ARP packets enabled.

If this function is enabled and the source IP address of a received gratuitous ARP packet fails to find a match in the ARP table of the device, the device adds the source IP and MAC addresses of the packet to its dynamic ARP table. However, if the source IP address finds a match in the ARP table, the device updates the corresponding dynamic ARP entry regardless of whether this function is enabled.

The interfaces that can be configured with this function must be Layer-3 interfaces specified with IP addresses.

Example

# Enable the learning of gratuitous ARP packets on the GigabitEthernet 0/0/1.

<sysname> system-view
[sysname] interface GigabitEthernet 0/0/1
[sysname-GigabitEthernet0/0/1] gratuitous-arp learn enable