Cisco Catalyst 3560-X Command Reference Manual page 317

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Catalyst 3750-X and 3560-X Switch Cisco IOS Commands

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We recommend that you use the show arp privileged EXEC command to display and verify

private-VLAN interface ARP entries.

If you disconnect the switch from a device and then connect it to another device with a different

MAC 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 configuration

command to manually remove the private-VLAN interface ARP entries.

Use the arp ip-address hardware-address type global configuration command to add a

private-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.

To enable sticky ARP on a normal SVI:

Switch(config-if)# ip sticky-arp

To disable sticky ARP on a Layer 3 interface or an SVI:

Switch(config-if)# no ip sticky-arp

You can verify your settings by using the show arp privileged EXEC command.

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Adds a permanent entry in the ARP table. For syntax information,

see the Cisco IOS IP Addressing Services Command Reference,

Release 12.4 > ARP Commands.

Displays the entries in the ARP table. For syntax information, see the

Cisco IOS IP Addressing Services Command Reference,

Release 12.4 > ARP Commands.

Catalyst 3750-X and 3560-X Switch Command Reference

ip sticky-arp (interface configuration)

Catalyst 3750-x