D-Link DGS-3200 Series User Manual page 245

Table-3 (ARP Payload)
H/W Protocol H/W Address
Type Type Length
When PC B replies to the query, the "Destination Address" in the Ethernet frame will be changed to PC A's MAC address. The
"Source Address" will be changed to PC B's MAC address (see Table-4).
Table-4 (Ethernet frame format)
Destination address
00-20-5C-01-11-11
The switch will also examine the "Source Address" of the Ethernet frame and find that the address is not in the Forwarding Table.
The switch will learn PC B's MAC and update its Forwarding Table.
Forwarding Table
Port1 00-20-5C-01-11-11
Port2 00-20-5C-01-22-22
DGS-3200 Series Layer 2 Gigabit Ethernet Managed Switch
Protocol Operation
Address
Length
ARP reply
Source address
00-20-5C-01-22-22
Sender
H/W Address
00-20-5C-01-11-11
Ether-type ARP
231
Sender Target
Protocol H/W Address
Address
10.10.10.1 00-00-00-00-00-00
FCS
Target
Protocol
Address
10.10.10.2