ip proxy-arp (Interface)

Enables IP proxy ARP on an interface.
Syntax
ip proxy-arp { enable | disable }
no ip proxy-arp { enable | disable }
Command Default

IP proxy ARP is disabled.

Parameters
enable
Enables IP proxy ARP on an interface.
disable
Disables IP proxy ARP on an interface.
Modes

Interface configuration mode

Usage Guidelines

Configuring proxy ARP at the Interface level overrides the global configuration.

Proxy ARP allows a Layer 3 switch to answer ARP requests from devices on one network on behalf of devices in another network. Because ARP requests are MAC-layer broadcasts, they reach only the devices that are directly connected to the sender of the ARP request. Thus, ARP requests do not cross routers.

An ARP request from one subnet can reach another subnet when both subnets are on the same physical segment (Ethernet cable), because MAC-layer broadcasts reach all the devices on the segment.

This feature is not supported on RUCKUS Layer 2 switches.

The no form of the command enables or disables IP proxy ARP.

Examples

The following example enables IP proxy ARP on an interface. 

device(config)# interface ethernet 1/1/1
device(config-if-e1000-1/1/1)# ip proxy-arp enable

The following example disables IP proxy ARP on an interface. 

device(config)# interface ethernet 1/1/1
device(config-if-e1000-1/1/1)# ip proxy-arp disable
Parent topic: Commands I