Address Resolution Protocol (ARP)
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ip proxy-arp
This command enables proxy Address Resolution Protocol (ARP). Use the no form
to disable proxy ARP.
Syntax
[no] ip proxy-arp
Default Setting
Disabled
Command Mode
Interface Configuration (VLAN)
Command Usage
• Proxy ARP allows a non-routing device to determine the MAC address of a
host on another subnet or network.
• End stations that require Proxy ARP must view the entire network as a single
network. These nodes must therefore use a smaller subnet mask than that
used by the router or other relevant network devices.
• Extensive use of Proxy ARP can degrade router performance because it may
lead to increased ARP traffic and increased search time for larger ARP
address tables.
Example
Console(config)#interface vlan 3
Console(config-if)#ip proxy-arp
Console(config-if)#
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