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CCNA: Address Resolution Protocol (ARP)

The Network DNA

To do that it builds the Ethernet Frame and puts its MAC address as the Source MAC address (SMAC) and layer 2 broadcast address (ff:ff:ff:ff:ff:ff). PC-2 now creates an Ethernet frame to respond to the ARP. IP address. A switch forwards the broadcast out all the ports in same VLAN (except the port where broadcast was received).