Arp configuration, Arp overview, Arp function – H3C Technologies H3C WX3000E Series Wireless Switches User Manual
Page 12: Arp message format
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ARP configuration
This chapter includes these sections:
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•
•
Displaying and maintaining ARP
•
NOTE:
•
The term "switch" or "device" in this chapter refers to the switching engine on a WX3000E wireless
switch.
•
The WX3000E series comprises WX3024E and WX3010E wireless switches.
•
The port numbers in this chapter are for illustration only.
ARP overview
ARP function
The Address Resolution Protocol (ARP) is used to resolve an IP address into a physical address (Ethernet
MAC address, for example).
In an Ethernet LAN, a device uses ARP to resolve the IP address of the next hop to the corresponding
MAC address.
ARP message format
ARP messages are classified into ARP requests and ARP replies.
shows the format of the ARP
request/reply. Numbers in the figure refer to field lengths.
Figure 1 ARP message format
ARP message fields:
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Hardware type: The hardware address type. The value 1 represents Ethernet.
- H3C WX5500E Series Access Controllers H3C WX3500E Series Access Controllers H3C WX2500E Series Access Controllers H3C WX6000 Series Access Controllers H3C WX5000 Series Access Controllers H3C LSWM1WCM10 Access Controller Module H3C LSUM3WCMD0 Access Controller Module H3C LSUM1WCME0 Access Controller Module H3C LSWM1WCM20 Access Controller Module H3C LSQM1WCMB0 Access Controller Module H3C LSRM1WCM2A1 Access Controller Module H3C LSBM1WCM2A0 Access Controller Module H3C WA3600 Series Access Points H3C WA2600 Series WLAN Access Points