User Manual

C HAPTER 48 | IP Interface Commands
IPv4 Interface
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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)#
clear arp-cache This command deletes all dynamic entries from the Address Resolution
Protocol (ARP) cache.
COMMAND MODE
Privileged Exec
EXAMPLE
This example clears all dynamic entries in the ARP cache.
Console#clear arp-cache
This operation will delete all the dynamic entries in ARP Cache.
Are you sure to continue this operation (y/n)?y
Console#