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Command Reference Guide Loopback Interface Configuration Command Set
61200510L1-35E Copyright © 2005 ADTRAN 1005
ip proxy-arp <address> <subnet mask>
Use the ip proxy-arp command to enable proxy Address Resolution Protocol (ARP) on the interface. Use
the no form of this command to disable this feature.
Syntax Description
<address> Defines the IP address for the interface in dotted decimal notation (for example:
192.22.73.101).
<subnet mask> Specifies the subnet mask that corresponds to the listed IP address.
Default Values
By default, proxy arp is enabled.
Applicable Platforms
This command applies to the NetVanta 300, 1000R, 2000, 3000, 4000, and 5000 and Total Access 900
Series units.
Command History
Release 1.1 Command was introduced.
Functional Notes
In general, the principle of proxy-arp allows a router to insert its IP address in the source IP address field of
a packet (if the packet is from a host on one of its subnetworks). This allows hosts to reach devices on
other subnetworks without implementing routing or specifying a default gateway.
If proxy-arp is enabled, the AOS will respond to all proxy-arp requests with its specified MAC address and
forward packets accordingly.
Enabling proxy-arp on an interface may introduce unnecessary ARP traffic on the network.
Usage Examples
The following enables proxy-arp on the loopback interface:
(config)#interface loopback 1
(config-loop 1)#ip proxy-arp