D-Link DWS-3160-24TC Cli Reference Manual page 943

DWS-3160 Series Gigabit Ethernet Unified Switch CLI Reference Guide
When PC B replies to the ARP request, its MAC address will be written into "Target H/W Address"
in the ARP payload displayed in Table 3. The ARP reply will be then encapsulated into an Ethernet
frame again and sent back to the sender. The ARP reply is in a form of Unicast communication.
Figure 2
Figure 3
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