H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 363)

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ARP Configuration
When configuring ARP, go to these sections for information you are interested in:
z
ARP Overview
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Configuring ARP
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Configuring Gratuitous ARP
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Displaying and Maintaining ARP
The term switch in this document refers to a switch in a generic sense or an access controller
configured with the switching function unless otherwise specified.
ARP Overview
ARP Function
Address Resolution Protocol (ARP) is used to resolve an IP address into a data link layer address.
An IP address is the address of a host at the network layer. To send a network layer packet to a
destination host, the device must know the data link layer address (such as the MAC address) of the
destination host. To this end, the IP address must be resolved into the corresponding data link layer
address.
Unless otherwise stated, the data link layer addresses that appear in this chapter refer to the 48-bit
Ethernet MAC addresses.