Cisco Systems 3560 Manual De Usuario

Beginning in privileged EXEC mode, follow these steps to specify the ARP encapsulation type:

To disable an encapsulation type, use the no arp arpa or no arp snap interface configuration command.

By default, the switch uses proxy ARP to help hosts learn MAC addresses of hosts on other networks or 
subnets. 

Beginning in privileged EXEC mode, follow these steps to enable proxy ARP if it has been disabled:

To disable proxy ARP on the interface, use the no ip proxy-arp interface configuration command.

These mechanisms allow the switch to learn about routes to other networks when it does not have IP 
routing enabled:

Enter global configuration mode.

interface interface-id

Enter interface configuration mode, and specify the Layer 3 
interface to configure.

arp {arpa | snap}

Specify the ARP encapsulation method:

arpa—Address Resolution Protocol

snap—Subnetwork Address Protocol

end 

Return to privileged EXEC mode.

show interfaces [interface-id]

Verify ARP encapsulation configuration on all interfaces or 
the specified interface.

(Optional) Save your entries in the configuration file.

Enter global configuration mode.

interface interface-id

Enter interface configuration mode, and specify the Layer 3 
interface to configure.

Enable proxy ARP on the interface. 

end 

Return to privileged EXEC mode.

show ip interface [interface-id]

Verify the configuration on the interface or all interfaces.

(Optional) Save your entries in the configuration file.