H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 158)

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22
ARP Configuration
Support of the H3C WX series access controllers for features may vary by device model. For more
information, see "Feature Matrixes" in Compatibility Matrixes.
The sample output in this manual was created on the WX5004. The output on your device may
vary.
The grayed out functions or parameters on the Web interface indicate that they are not supported
or cannot be modified.
The models listed in this manual are not applicable to all regions. Please consult your local sales
office for the models applicable to your region.
ARP Overview
ARP Function
The Address Resolution Protocol (ARP) is used to resolve an IP address into an Ethernet MAC address
(or physical address).
In an Ethernet LAN, when a device sends data to another device, it uses ARP to translate the IP
address of the destination device to the corresponding MAC address.
ARP Message Format
ARP messages are classified into ARP requests and ARP replies. Figure 22-1 shows the format of the
ARP request/reply.
Figure 22-1 ARP message format
The following describe the fields in Figure 22-1 .
Hardware type: This field specifies the hardware address type. The value “1” represents Ethernet.