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

Chapter 2Catalyst 3750-E and 3560-E Switch Cisco IOS Commandsip sticky-arp (global configuration)ip sticky-arp (global configuration)Use the ip sticky-arp global configuration command to enable sticky Address Resolution Protocol(ARP) on a switch virtual interface (SVI) that belongs to a private VLAN. Use the no form of thiscommand to disable sticky ARP.ip sticky-arpno ip sticky-arpSyntax DescriptionThis command has no arguments or keywords.DefaultsSticky ARP is enabled.Command ModesGlobal configurationCommand HistoryRelease12.2(37)SEModificationThis command was introduced.Usage GuidelinesSticky ARP entries are those learned on private-VLAN SVIs. These entries do not age out.The ip sticky-arp global configuration command is supported only on SVIs belonging to privateVLANs.• When you configure a private VLAN, sticky ARP is enabled on the switch (the default).If you enter the ip sticky-arp interface configuration command, it does not take effect.If you enter the no ip sticky-arp interface configuration command, you do not disable sticky ARPon an interface.NoteWe recommend that you use the show arp privileged EXEC command to display and verifyprivate-VLAN interface ARP entries.• 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.OL-9776-08Catalyst 3750-E and 3560-E Switch Command Reference2-275