H3C MSR 5600 Comware 7 Vxlan Command Reference page 45

Usage guidelines
By default, the device learns ARP information of remote VMs from packets received on VXLAN
tunnel interfaces. To save resources on VTEPs in an SDN transport network, you can temporarily
disable remote ARP learning when the controller and VTEPs are synchronizing entries. After the
entry synchronization is completed, use the undo vxlan tunnel arp-learning disable
command to enable remote ARP learning.
As a best practice, disable remote ARP learning for VXLANs only when the controller and VTEPs are
synchronizing entries.
Examples
# Disable remote ARP learning for VXLANs.
<Sysname> system
[Sysname] vxlan tunnel arp-learning disable
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