Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

ip sticky-arp (interface configuration)Chapter 2Catalyst 3750-E and 3560-E Switch Cisco IOS Commands• If you disconnect the switch from a device and then connect it to another device with a differentMAC address but with the same IP address, the ARP entry is not created, and this message appears:*Mar 2 00:26:06.967: %IP-3-STCKYARPOVR: Attempt to overwrite Sticky ARP entry:20.6.2.1, hw: 0000.0602.0001 by hw: 0000.0503.0001• If a MAC address of a device changes, you must use the no arp ip-address global configurationcommand to manually remove the private-VLAN interface ARP entries.• Use the arp ip-address hardware-address type global configuration command to add aprivate-VLAN ARP entry.• Use the no sticky-arp global configuration command to disable sticky ARP on the switch.• Use the no sticky-arp interface configuration command to disable sticky ARP on an interface.ExamplesTo enable sticky ARP on a normal SVI:Switch(config-if)# ip sticky-arpTo disable sticky ARP on a Layer 3 interface or an SVI:Switch(config-if)# no ip sticky-arpYou can verify your settings by using the show arp privileged EXEC command.Related Commands Command DescriptionarpAdds a permanent entry in the ARP table. For syntax information,see the Cisco IOS IP Addressing Services Command Reference,Release 12.4 > ARP Commands.show arpDisplays the entries in the ARP table. For syntax information, see theCisco IOS IP Addressing Services Command Reference,Release 12.4 > ARP Commands.2-278Catalyst 3750-E and 3560-E Switch Command ReferenceOL-9776-08