Administrator Guide

Layer 3 Routing Commands 1211
cache capacity, enabling dynamic renew could prevent some neighbors from
communicating because the ARP cache is full. Dynamic renewal should be
disabled in these networks.
Example
console#configure
console(config)#arp dynamicrenew
console(config)#no arp dynamicrenew
arp purge
Use the arp purge command in Privileged Exec mode to cause the specified
IP address to be removed from the ARP cache. Only entries of type dynamic
or gateway are affected by this command. The arp purge command optionally
removes a static ARP entry in the selected VRF.
Syntax
arp purge [vrf vrf-name ] ip-address [ interface interface-id ]
• vrf-name —The name of the VRF associated with the ARP entry which is
to be removed. If no VRF is specified, the ARP entry is associated with the
global ARP table is removed.
•
ip-address — The IP address to be removed from ARP cache.
•
interface-id —An optional IP unnumbered (VLAN) interface identifier.
Default Configuration
This command has no default configuration.
Command Mode
Privileged Exec mode
User Guidelines
The VRF identified in the parameter must have been previously created or an
error is returned.
Only IPv4 addresses are supported with the vrf parameter.
The vrf parameter is only available on the N3000/N4000 switches.
2CSNXXX_SWUM204.book Page 1211 Monday, January 25, 2016 1:25 PM