Enables conversational address-resolution protocol (ARP) and conversational neighbor discovery (ND). Such enablement improves hardware utilization by programming only active flows into the forwarding plane.
Conversational ARP/ND is disabled.
Global configuration mode
You can change the aging-time value from the 300 second default—either before or during enablement—by entering the host-table aging-time conversational command.
Conversational ARP/ND can be CPU-intensive.
If conversational ARP/ND is not enabled, make sure that the software ARP/ND cache size is less than the hardware profile limit.
To disable conversational ARP/ND, enter the no form of this command.
Upon disablement, the conversational ARP/ND timers no longer apply: All current entries become permanent as do all new entries.
The following example enables conversational ARP/ND.
device# configure terminal device(config)# host-table aging-mode conversational