Overview
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Proxy Address Resolution Protocol
(ARP)
This section describes the Proxy Address Resolution Protocol (ARP) feature.
Overview
•
Proxy ARP allows a router to answer ARP requests where the target IP address is not the
router itself but a destination that the router can reach.
•
If a host does not know the default gateway, proxy ARP can learn the first hop.
•
Machines in one physical network appear to be part of another logical network.
•
Without proxy ARP, a router responds to an ARP request only if the target IP address is an
address configured on the interface where the ARP request arrived.
CLI Examples
The following are examples of the commands used in the proxy ARP feature.
Example #1 show ip interface
(DWS-3024) #show ip interface ?
<slot/port> Enter an interface in slot/port format.
brief Display summary information about IP configuration
settings for all ports.
loopback Display the configured Loopback interface information.
(DWS-3024) #show ip interface 0/24
Routing Mode................................... Disable
Administrative Mode............................ Enable
Forward Net Directed Broadcasts................ Disable
Proxy ARP...................................... Enable
Active State................................... Inactive
Link Speed Data Rate........................... Inactive
MAC Address.................................... 00:10:18:82:06:5F
Encapsulation Type............................. Ethernet
IP MTU......................................... 1500
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